masterformat-2016-with-levels.json

[
  {
    "code": "00 00 00",
    "label": "Procurement and Contracting Requirements",
    "level": 1
  },
  {
    "code": "00 01 01",
    "label": "Project Title Page",
    "level": 4
  },
  {
    "code": "00 01 03",
    "label": "Project Directory",
    "level": 4
  },
  {
    "code": "00 01 05",
    "label": "Certifications Page",
    "level": 4
  },
  {
    "code": "00 01 07",
    "label": "Seals Page",
    "level": 4
  },
  {
    "code": "00 01 10",
    "label": "Table of Contents",
    "level": 4
  },
  {
    "code": "00 01 15",
    "label": "List of Drawing Sheets",
    "level": 4
  },
  {
    "code": "00 01 20",
    "label": "List of Schedules",
    "level": 4
  },
  {
    "code": "00 10 00",
    "label": "Solicitation",
    "level": 2
  },
  {
    "code": "00 11 00",
    "label": "Advertisements and Invitations",
    "level": 3
  },
  {
    "code": "00 11 13",
    "label": "Advertisement for Bids",
    "level": 4
  },
  {
    "code": "00 11 15",
    "label": "Advertisement for Prequalification of Bidders",
    "level": 4
  },
  {
    "code": "00 11 16",
    "label": "Invitation to Bid",
    "level": 4
  },
  {
    "code": "00 11 19",
    "label": "Request for Proposal",
    "level": 4
  },
  {
    "code": "00 11 53",
    "label": "Request for Qualifications",
    "level": 4
  },
  {
    "code": "00 20 00",
    "label": "Instructions for Procurement",
    "level": 2
  },
  {
    "code": "00 21 00",
    "label": "Instructions",
    "level": 3
  },
  {
    "code": "00 21 13",
    "label": "Instructions to Bidders",
    "level": 4
  },
  {
    "code": "00 21 16",
    "label": "Instructions to Proposers",
    "level": 4
  },
  {
    "code": "00 22 00",
    "label": "Supplementary Instructions",
    "level": 3
  },
  {
    "code": "00 22 13",
    "label": "Supplementary Instructions to Bidders",
    "level": 4
  },
  {
    "code": "00 22 16",
    "label": "Supplementary Instructions to Proposers",
    "level": 4
  },
  {
    "code": "00 23 00",
    "label": "Procurement Definitions",
    "level": 3
  },
  {
    "code": "00 24 00",
    "label": "Procurement Scopes",
    "level": 3
  },
  {
    "code": "00 24 13",
    "label": "Scopes of Bids",
    "level": 4
  },
  {
    "code": "00 24 13.13",
    "label": "Scopes of Bids (Multiple Contracts)",
    "level": 5
  },
  {
    "code": "00 24 13.16",
    "label": "Scopes of Bids (Multiple-Prime Contract)",
    "level": 5
  },
  {
    "code": "00 24 16",
    "label": "Scopes of Proposals",
    "level": 4
  },
  {
    "code": "00 24 16.13",
    "label": "Scopes of Proposals (Multiple Contracts)",
    "level": 5
  },
  {
    "code": "00 24 16.16",
    "label": "Scopes of Proposals (Multiple-Prime Contract)",
    "level": 5
  },
  {
    "code": "00 25 00",
    "label": "Procurement Meetings",
    "level": 3
  },
  {
    "code": "00 25 13",
    "label": "Pre-Bid Meetings",
    "level": 4
  },
  {
    "code": "00 25 16",
    "label": "Pre-Proposal Meetings",
    "level": 4
  },
  {
    "code": "00 26 00",
    "label": "Procurement Substitution Procedures",
    "level": 3
  },
  {
    "code": "00 30 00",
    "label": "Available Information",
    "level": 2
  },
  {
    "code": "00 31 00",
    "label": "Available Project Information",
    "level": 3
  },
  {
    "code": "00 31 13",
    "label": "Preliminary Schedules",
    "level": 4
  },
  {
    "code": "00 31 13.13",
    "label": "Preliminary Project Schedule",
    "level": 5
  },
  {
    "code": "00 31 13.16",
    "label": "Preliminary Construction Schedule",
    "level": 5
  },
  {
    "code": "00 31 13.23",
    "label": "Preliminary Project Phases",
    "level": 5
  },
  {
    "code": "00 31 13.26",
    "label": "Preliminary Project Sequencing",
    "level": 5
  },
  {
    "code": "00 31 13.33",
    "label": "Preliminary Project Milestones",
    "level": 5
  },
  {
    "code": "00 31 16",
    "label": "Project Budget Information",
    "level": 4
  },
  {
    "code": "00 31 19",
    "label": "Existing Condition Information",
    "level": 4
  },
  {
    "code": "00 31 19.13",
    "label": "Movement and Vibration Information",
    "level": 5
  },
  {
    "code": "00 31 19.16",
    "label": "Acoustic Information",
    "level": 5
  },
  {
    "code": "00 31 19.19",
    "label": "Traffic Information",
    "level": 5
  },
  {
    "code": "00 31 19.23",
    "label": "Existing Structural Information",
    "level": 5
  },
  {
    "code": "00 31 21",
    "label": "Survey Information",
    "level": 4
  },
  {
    "code": "00 31 21.13",
    "label": "Site Survey Information",
    "level": 5
  },
  {
    "code": "00 31 21.16",
    "label": "Measured Drawing Information",
    "level": 5
  },
  {
    "code": "00 31 21.19",
    "label": "Photographic Information",
    "level": 5
  },
  {
    "code": "00 31 24",
    "label": "Environmental Assessment Information",
    "level": 4
  },
  {
    "code": "00 31 24.13",
    "label": "Soil Contamination Report",
    "level": 5
  },
  {
    "code": "00 31 24.23",
    "label": "Environmental Impact Study Report",
    "level": 5
  },
  {
    "code": "00 31 24.26",
    "label": "Environmental Impact Report Evaluation",
    "level": 5
  },
  {
    "code": "00 31 24.29",
    "label": "Record of Environmental Impact Decision",
    "level": 5
  },
  {
    "code": "00 31 24.33",
    "label": "Environmental Impact Mitigation Report",
    "level": 5
  },
  {
    "code": "00 31 25",
    "label": "Existing Material Information",
    "level": 4
  },
  {
    "code": "00 31 25.16",
    "label": "Existing Concrete Information",
    "level": 5
  },
  {
    "code": "00 31 25.19",
    "label": "Existing Masonry Information",
    "level": 5
  },
  {
    "code": "00 31 25.23",
    "label": "Existing Metals Information",
    "level": 5
  },
  {
    "code": "00 31 25.26",
    "label": "Existing Wood, Plastics, and Composites Information",
    "level": 5
  },
  {
    "code": "00 31 25.29",
    "label": "Existing Thermal and Moisture Protection Information",
    "level": 5
  },
  {
    "code": "00 31 26",
    "label": "Existing Hazardous Material Information",
    "level": 4
  },
  {
    "code": "00 31 26.23",
    "label": "Existing Asbestos Information",
    "level": 5
  },
  {
    "code": "00 31 26.26",
    "label": "Existing Lead Information",
    "level": 5
  },
  {
    "code": "00 31 26.29",
    "label": "Existing Polychlorinate Biphenyl Information",
    "level": 5
  },
  {
    "code": "00 31 26.33",
    "label": "Existing Mold Information",
    "level": 5
  },
  {
    "code": "00 31 26.36",
    "label": "Existing Hazardous Waste Drum Information",
    "level": 5
  },
  {
    "code": "00 31 31",
    "label": "Geophysical Data",
    "level": 4
  },
  {
    "code": "00 31 31.13",
    "label": "Seismic Investigations Information",
    "level": 5
  },
  {
    "code": "00 31 31.16",
    "label": "Gravity Investigations Information",
    "level": 5
  },
  {
    "code": "00 31 31.19",
    "label": "Magnetic Investigations Information",
    "level": 5
  },
  {
    "code": "00 31 31.23",
    "label": "Electromagnetic Investigations Information",
    "level": 5
  },
  {
    "code": "00 31 31.26",
    "label": "Electrical Resistivity Investigations Information",
    "level": 5
  },
  {
    "code": "00 31 31.29",
    "label": "Magnetotelluric Investigations Information",
    "level": 5
  },
  {
    "code": "00 31 32",
    "label": "Geotechnical Data",
    "level": 4
  },
  {
    "code": "00 31 32.13",
    "label": "Subsurface Drilling and Sampling Information",
    "level": 5
  },
  {
    "code": "00 31 32.16",
    "label": "Material Testing Information",
    "level": 5
  },
  {
    "code": "00 31 32.19",
    "label": "Exploratory Excavation Information",
    "level": 5
  },
  {
    "code": "00 31 32.23",
    "label": "Geotechnical Monitoring Information",
    "level": 5
  },
  {
    "code": "00 31 43",
    "label": "Permit Application",
    "level": 4
  },
  {
    "code": "00 31 46",
    "label": "Permits",
    "level": 4
  },
  {
    "code": "00 40 00",
    "label": "Procurement Forms and Supplements",
    "level": 2
  },
  {
    "code": "00 41 00",
    "label": "Bid Forms",
    "level": 3
  },
  {
    "code": "00 41 13",
    "label": "Bid Form - Stipulated Sum (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 41 16",
    "label": "Bid Form - Stipulated Sum (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 41 23",
    "label": "Bid Form - Construction Management (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 41 26",
    "label": "Bid Form - Construction Management (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 41 33",
    "label": "Bid Form - Cost-Plus-Fee (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 41 36",
    "label": "Bid Form - Cost-Plus-Fee (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 41 43",
    "label": "Bid Form - Unit Price (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 41 46",
    "label": "Bid Form - Unit Price (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 41 53",
    "label": "Bid Form - Design/Build (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 41 56",
    "label": "Bid Form - Design/Build (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 41 63",
    "label": "Bid Form - Purchase Contract",
    "level": 4
  },
  {
    "code": "00 42 00",
    "label": "Proposal Forms",
    "level": 3
  },
  {
    "code": "00 42 13",
    "label": "Proposal Form - Stipulated Sum (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 42 16",
    "label": "Proposal Form - Stipulated Sum (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 42 23",
    "label": "Proposal Form - Construction Management (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 42 26",
    "label": "Proposal Form - Construction Management (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 42 33",
    "label": "Proposal Form - Cost-Plus-Fee (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 42 36",
    "label": "Proposal Form - Cost-Plus-Fee (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 42 43",
    "label": "Proposal Form - Unit Price (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 42 46",
    "label": "Proposal Form - Unit Price (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 42 53",
    "label": "Proposal Form - Design/Build (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 42 56",
    "label": "Proposal Form - Design/Build (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 42 63",
    "label": "Proposal Form - Purchase Contract",
    "level": 4
  },
  {
    "code": "00 42 73",
    "label": "Proposal Form - Performance Contract",
    "level": 4
  },
  {
    "code": "00 43 00",
    "label": "Procurement Form Supplements",
    "level": 3
  },
  {
    "code": "00 43 13",
    "label": "Bid Security Form",
    "level": 4
  },
  {
    "code": "00 43 21",
    "label": "Allowance Form",
    "level": 4
  },
  {
    "code": "00 43 22",
    "label": "Unit Prices Form",
    "level": 4
  },
  {
    "code": "00 43 23",
    "label": "Alternates Form",
    "level": 4
  },
  {
    "code": "00 43 25",
    "label": "Substitution Request Form (During Procurement)",
    "level": 4
  },
  {
    "code": "00 43 26",
    "label": "Estimated Quantities Form",
    "level": 4
  },
  {
    "code": "00 43 27",
    "label": "Separate Prices Break-Out Form",
    "level": 4
  },
  {
    "code": "00 43 28",
    "label": "Tax Rebate Form",
    "level": 4
  },
  {
    "code": "00 43 33",
    "label": "Proposed Products Form",
    "level": 4
  },
  {
    "code": "00 43 36",
    "label": "Proposed Subcontractors Form",
    "level": 4
  },
  {
    "code": "00 43 39",
    "label": "Minority Business Enterprise Statement of Intent Form",
    "level": 4
  },
  {
    "code": "00 43 43",
    "label": "Wage Rates Form",
    "level": 4
  },
  {
    "code": "00 43 73",
    "label": "Proposed Schedule of Values Form",
    "level": 4
  },
  {
    "code": "00 43 83",
    "label": "Proposed Construction Schedule Form",
    "level": 4
  },
  {
    "code": "00 43 86",
    "label": "Proposed Work Plan Schedule Form",
    "level": 4
  },
  {
    "code": "00 43 93",
    "label": "Bid Submittal Checklist",
    "level": 4
  },
  {
    "code": "00 45 00",
    "label": "Representations and Certifications",
    "level": 3
  },
  {
    "code": "00 45 13",
    "label": "Bidder's Qualifications",
    "level": 4
  },
  {
    "code": "00 45 16",
    "label": "Proposer's Qualifications",
    "level": 4
  },
  {
    "code": "00 45 19",
    "label": "Non-Collusion Affidavit",
    "level": 4
  },
  {
    "code": "00 45 23",
    "label": "Statement of Disposal Facility",
    "level": 4
  },
  {
    "code": "00 45 26",
    "label": "Workers Compensation Certificate Schedule",
    "level": 4
  },
  {
    "code": "00 45 33",
    "label": "Non-Segregated Facilities Affidavit",
    "level": 4
  },
  {
    "code": "00 45 36",
    "label": "Equal Employment Opportunity Affidavit",
    "level": 4
  },
  {
    "code": "00 45 39",
    "label": "Minority Business Enterprise Affidavit",
    "level": 4
  },
  {
    "code": "00 45 43",
    "label": "Corporate Resolutions",
    "level": 4
  },
  {
    "code": "00 45 46",
    "label": "Governmental Certifications",
    "level": 4
  },
  {
    "code": "00 50 00",
    "label": "Contracting Forms and Supplements",
    "level": 2
  },
  {
    "code": "00 51 00",
    "label": "Notice of Award",
    "level": 3
  },
  {
    "code": "00 52 00",
    "label": "Agreement Forms",
    "level": 3
  },
  {
    "code": "00 52 13",
    "label": "Agreement Form - Stipulated Sum (design/bid/build or design/negotiate/build)",
    "level": 4
  },
  {
    "code": "00 52 14",
    "label": "Subcontract Form - Stipulated Sum (design/bid/build or design/negotiate/build)",
    "level": 4
  },
  {
    "code": "00 52 16",
    "label": "Agreement Form - Cost-Plus (design/bid/build or design/negotiate/build)",
    "level": 4
  },
  {
    "code": "00 52 17",
    "label": "Subcontract Form - Cost-Plus (design/bid/build or design/negotiate/build)",
    "level": 4
  },
  {
    "code": "00 52 23",
    "label": "Agreement Form - Construction Manager as Agent or Advisor - Stipulated Sum",
    "level": 4
  },
  {
    "code": "00 52 24",
    "label": "Subcontract Form - Construction Manager as Agent or Adviser - Stipulated Sum",
    "level": 4
  },
  {
    "code": "00 52 26",
    "label": "Agreement Form - Construction Manager as Agent or Adviser - Cost-Plus",
    "level": 4
  },
  {
    "code": "00 52 27",
    "label": "Subcontract Form - Construction Manager as Agent or Adviser - Cost-Plus",
    "level": 4
  },
  {
    "code": "00 52 33",
    "label": "Agreement Form - Construction Manager at Risk - Stipulated Sum",
    "level": 4
  },
  {
    "code": "00 52 34",
    "label": "Subcontract Form - Construction Manager at Risk - Stipulated Sum",
    "level": 4
  },
  {
    "code": "00 52 36",
    "label": "Agreement Form - Construction Manager at Risk - Cost-Plus",
    "level": 4
  },
  {
    "code": "00 52 37",
    "label": "Subcontract Form - Construction Manager at Risk - Cost-Plus",
    "level": 4
  },
  {
    "code": "00 52 51",
    "label": "Public-Private Partnership Agreement",
    "level": 4
  },
  {
    "code": "00 52 52",
    "label": "Agreement for Preliminary Services - Owner-Design/Builder",
    "level": 4
  },
  {
    "code": "00 52 53",
    "label": "Agreement Form - Owner-Design/Builder - Stipulated Sum",
    "level": 4
  },
  {
    "code": "00 52 54",
    "label": "Subcontract Form - Design/Build - Stipulated Sum",
    "level": 4
  },
  {
    "code": "00 52 56",
    "label": "Agreement Form - Owner-Design/Builder - Cost-Plus",
    "level": 4
  },
  {
    "code": "00 52 57",
    "label": "Subcontract Form - Design/Build - Cost-Plus",
    "level": 4
  },
  {
    "code": "00 52 63",
    "label": "Agreement Form - Purchase - Stipulated Price",
    "level": 4
  },
  {
    "code": "00 52 73",
    "label": "Agreement Form - Performance Contract",
    "level": 4
  },
  {
    "code": "00 52 93",
    "label": "Multi-Party Agreement Form - Integrated Project Delivery",
    "level": 4
  },
  {
    "code": "00 52 96",
    "label": "Agreement between Single-Purpose Entity and Owner - Integrated Project Delivery",
    "level": 4
  },
  {
    "code": "00 52 97",
    "label": "Agreement between Single-Purpose Entity and Non-Owner - Integrated Project Delivery",
    "level": 4
  },
  {
    "code": "00 52 98",
    "label": "Agreement between Single-Purpose Entity and Consultant - Integrated Project Delivery",
    "level": 4
  },
  {
    "code": "00 54 00",
    "label": "Agreement Form Supplements",
    "level": 3
  },
  {
    "code": "00 54 13",
    "label": "Supplementary Scope Statement",
    "level": 4
  },
  {
    "code": "00 54 21",
    "label": "Allowances Schedule",
    "level": 4
  },
  {
    "code": "00 54 22",
    "label": "Unit Prices Schedule",
    "level": 4
  },
  {
    "code": "00 54 33",
    "label": "Digital/Electronic Data Protocol Exhibit",
    "level": 4
  },
  {
    "code": "00 54 36",
    "label": "Building Information Modeling Exhibit",
    "level": 4
  },
  {
    "code": "00 55 00",
    "label": "Notice to Proceed",
    "level": 3
  },
  {
    "code": "00 60 00",
    "label": "Project Forms",
    "level": 2
  },
  {
    "code": "00 61 00",
    "label": "Bond Forms",
    "level": 3
  },
  {
    "code": "00 61 13",
    "label": "Performance and Payment Bond Form",
    "level": 4
  },
  {
    "code": "00 61 13.13",
    "label": "Performance Bond Form",
    "level": 5
  },
  {
    "code": "00 61 13.16",
    "label": "Payment Bond Form",
    "level": 5
  },
  {
    "code": "00 61 16",
    "label": "Lien Bond Form",
    "level": 4
  },
  {
    "code": "00 61 19",
    "label": "Maintenance Bond Form",
    "level": 4
  },
  {
    "code": "00 61 23",
    "label": "Retainage Bond Form",
    "level": 4
  },
  {
    "code": "00 61 26",
    "label": "Special Bond Form",
    "level": 4
  },
  {
    "code": "00 62 00",
    "label": "Certificates and Other Forms",
    "level": 3
  },
  {
    "code": "00 62 11",
    "label": "Submittal Transmittal Form",
    "level": 4
  },
  {
    "code": "00 62 16",
    "label": "Certificate of Insurance Form",
    "level": 4
  },
  {
    "code": "00 62 19",
    "label": "Infection Control Form",
    "level": 4
  },
  {
    "code": "00 62 23",
    "label": "Construction Waste Diversion Form",
    "level": 4
  },
  {
    "code": "00 62 33",
    "label": "Products Form",
    "level": 4
  },
  {
    "code": "00 62 34",
    "label": "Recycled Content of Materials Form",
    "level": 4
  },
  {
    "code": "00 62 39",
    "label": "Minority Business Enterprise Certification Form",
    "level": 4
  },
  {
    "code": "00 62 73",
    "label": "Schedule of Values Form",
    "level": 4
  },
  {
    "code": "00 62 76",
    "label": "Application for Payment Form",
    "level": 4
  },
  {
    "code": "00 62 76.13",
    "label": "Sales Tax Form",
    "level": 5
  },
  {
    "code": "00 62 76.16",
    "label": "Consent of Surety to Reduction of Retainage Form",
    "level": 5
  },
  {
    "code": "00 62 79",
    "label": "Stored Material Form",
    "level": 4
  },
  {
    "code": "00 62 83",
    "label": "Construction Schedule Form",
    "level": 4
  },
  {
    "code": "00 62 86",
    "label": "Work Plan Schedule Form",
    "level": 4
  },
  {
    "code": "00 62 89",
    "label": "Construction Equipment Form",
    "level": 4
  },
  {
    "code": "00 63 00",
    "label": "Clarification and Modification Forms",
    "level": 3
  },
  {
    "code": "00 63 13",
    "label": "Request for Interpretation Form",
    "level": 4
  },
  {
    "code": "00 63 19",
    "label": "Clarification Form",
    "level": 4
  },
  {
    "code": "00 63 25",
    "label": "Substitution Request Form (During Construction)",
    "level": 4
  },
  {
    "code": "00 63 33",
    "label": "Supplemental Instruction Form",
    "level": 4
  },
  {
    "code": "00 63 36",
    "label": "Field Order Form",
    "level": 4
  },
  {
    "code": "00 63 43",
    "label": "Written Amendment Form",
    "level": 4
  },
  {
    "code": "00 63 46",
    "label": "Construction Change Directive Form",
    "level": 4
  },
  {
    "code": "00 63 49",
    "label": "Work Change Directive Form",
    "level": 4
  },
  {
    "code": "00 63 53",
    "label": "Request for Proposal Form",
    "level": 4
  },
  {
    "code": "00 63 54",
    "label": "Proposal Worksheet Summary Form",
    "level": 4
  },
  {
    "code": "00 63 55",
    "label": "Proposal Worksheet Detail Form",
    "level": 4
  },
  {
    "code": "00 63 57",
    "label": "Change Order Request Form",
    "level": 4
  },
  {
    "code": "00 63 63",
    "label": "Change Order Form",
    "level": 4
  },
  {
    "code": "00 65 00",
    "label": "Closeout Forms",
    "level": 3
  },
  {
    "code": "00 65 13",
    "label": "Certificate of Compliance Form",
    "level": 4
  },
  {
    "code": "00 65 16",
    "label": "Certificate of Substantial Completion Form",
    "level": 4
  },
  {
    "code": "00 65 19",
    "label": "Certificate of Completion Form",
    "level": 4
  },
  {
    "code": "00 65 19.13",
    "label": "Affidavit of Payment of Debts and Claims Form",
    "level": 5
  },
  {
    "code": "00 65 19.16",
    "label": "Affidavit of Release of Liens Form",
    "level": 5
  },
  {
    "code": "00 65 19.19",
    "label": "Consent of Surety to Final Payment Form",
    "level": 5
  },
  {
    "code": "00 65 19.23",
    "label": "Acceptance Certificate Form",
    "level": 5
  },
  {
    "code": "00 65 19.26",
    "label": "Final Settlement Certificate Form",
    "level": 5
  },
  {
    "code": "00 65 36",
    "label": "Warranty Form",
    "level": 4
  },
  {
    "code": "00 65 73",
    "label": "Statutory Declaration Form",
    "level": 4
  },
  {
    "code": "00 70 00",
    "label": "Conditions of the Contract",
    "level": 2
  },
  {
    "code": "00 71 00",
    "label": "Contracting Definitions",
    "level": 3
  },
  {
    "code": "00 72 00",
    "label": "General Conditions",
    "level": 3
  },
  {
    "code": "00 72 13",
    "label": "General Conditions - Stipulated Sum (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 72 16",
    "label": "General Conditions - Stipulated Sum (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 72 23",
    "label": "General Conditions - Construction Management (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 72 26",
    "label": "General Conditions - Construction Management (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 72 33",
    "label": "General Conditions - Cost Plus-Fee (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 72 36",
    "label": "General Conditions - Cost-Plus-Fee (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 72 43",
    "label": "General Conditions - Unit Price (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 72 46",
    "label": "General Conditions - Unit Price (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 72 53",
    "label": "General Conditions - Design/Build (Single-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 72 56",
    "label": "General Conditions - Design/Build (Multiple-Prime Contract)",
    "level": 4
  },
  {
    "code": "00 72 73",
    "label": "General Conditions - Performance Contract",
    "level": 4
  },
  {
    "code": "00 72 95",
    "label": "General Conditions - Integrated Project Delivery",
    "level": 4
  },
  {
    "code": "00 73 00",
    "label": "Supplementary Conditions",
    "level": 3
  },
  {
    "code": "00 73 16",
    "label": "Insurance Requirements",
    "level": 4
  },
  {
    "code": "00 73 19",
    "label": "Health and Safety Requirements",
    "level": 4
  },
  {
    "code": "00 73 23",
    "label": "Purchase Contracts",
    "level": 4
  },
  {
    "code": "00 73 26",
    "label": "Assigned Contracts",
    "level": 4
  },
  {
    "code": "00 73 33",
    "label": "Non-Segregated Facilities Requirements",
    "level": 4
  },
  {
    "code": "00 73 36",
    "label": "Equal Employment Opportunity Requirements",
    "level": 4
  },
  {
    "code": "00 73 39",
    "label": "Minority Business Enterprise Requirements",
    "level": 4
  },
  {
    "code": "00 73 43",
    "label": "Wage Rate Requirements",
    "level": 4
  },
  {
    "code": "00 73 46",
    "label": "Wage Determination Schedule",
    "level": 4
  },
  {
    "code": "00 73 49",
    "label": "Labor Stabilization Agreement",
    "level": 4
  },
  {
    "code": "00 73 53",
    "label": "Anti-Pollution Measures",
    "level": 4
  },
  {
    "code": "00 73 63",
    "label": "Security Requirements",
    "level": 4
  },
  {
    "code": "00 73 73",
    "label": "Statutory Requirements",
    "level": 4
  },
  {
    "code": "00 73 83",
    "label": "Dispute Resolution",
    "level": 4
  },
  {
    "code": "00 90 00",
    "label": "Revisions, Clarifications, and Modifications",
    "level": 2
  },
  {
    "code": "00 91 00",
    "label": "Precontract Revisions",
    "level": 3
  },
  {
    "code": "00 91 13",
    "label": "Addenda",
    "level": 4
  },
  {
    "code": "00 91 16",
    "label": "Bid Revisions",
    "level": 4
  },
  {
    "code": "00 91 19",
    "label": "Proposal Revisions",
    "level": 4
  },
  {
    "code": "00 93 00",
    "label": "Record Clarifications and Proposals",
    "level": 3
  },
  {
    "code": "00 93 13",
    "label": "Record Requests for Interpretation",
    "level": 4
  },
  {
    "code": "00 93 19",
    "label": "Record Clarification Notices",
    "level": 4
  },
  {
    "code": "00 93 53",
    "label": "Record Proposal Requests",
    "level": 4
  },
  {
    "code": "00 93 54",
    "label": "Record Proposal Worksheet Summaries",
    "level": 4
  },
  {
    "code": "00 93 57",
    "label": "Record Change Order Requests",
    "level": 4
  },
  {
    "code": "00 94 00",
    "label": "Record Modifications",
    "level": 3
  },
  {
    "code": "00 94 33",
    "label": "Record Minor Changes in the Work",
    "level": 4
  },
  {
    "code": "00 94 36",
    "label": "Record Supplemental Instructions",
    "level": 4
  },
  {
    "code": "00 94 39",
    "label": "Record Field Orders",
    "level": 4
  },
  {
    "code": "00 94 43",
    "label": "Record Amendments",
    "level": 4
  },
  {
    "code": "00 94 46",
    "label": "Record Construction Change Directives",
    "level": 4
  },
  {
    "code": "00 94 49",
    "label": "Record Work Change Directives",
    "level": 4
  },
  {
    "code": "00 94 63",
    "label": "Record Change Orders",
    "level": 4
  },
  {
    "code": "01 00 00",
    "label": "General Requirements",
    "level": 1
  },
  {
    "code": "01 10 00",
    "label": "Summary",
    "level": 2
  },
  {
    "code": "01 11 00",
    "label": "Summary of Work",
    "level": 3
  },
  {
    "code": "01 11 13",
    "label": "Work Covered by Contract Documents",
    "level": 4
  },
  {
    "code": "01 11 16",
    "label": "Work by Owner",
    "level": 4
  },
  {
    "code": "01 11 19",
    "label": "Purchase Contracts",
    "level": 4
  },
  {
    "code": "01 12 00",
    "label": "Multiple Contract Summary",
    "level": 3
  },
  {
    "code": "01 12 13",
    "label": "Summary of Contracts",
    "level": 4
  },
  {
    "code": "01 12 16",
    "label": "Work Sequence",
    "level": 4
  },
  {
    "code": "01 12 19",
    "label": "Contract Interface",
    "level": 4
  },
  {
    "code": "01 14 00",
    "label": "Work Restrictions",
    "level": 3
  },
  {
    "code": "01 14 13",
    "label": "Access to Site",
    "level": 4
  },
  {
    "code": "01 14 16",
    "label": "Coordination with Occupants",
    "level": 4
  },
  {
    "code": "01 14 19",
    "label": "Use of Site",
    "level": 4
  },
  {
    "code": "01 14 33",
    "label": "Work in Rights-of-Way",
    "level": 4
  },
  {
    "code": "01 18 00",
    "label": "Project Utility Sources",
    "level": 3
  },
  {
    "code": "01 18 13",
    "label": "Utility Service Connections",
    "level": 4
  },
  {
    "code": "01 20 00",
    "label": "Price and Payment Procedures",
    "level": 2
  },
  {
    "code": "01 21 00",
    "label": "Allowances",
    "level": 3
  },
  {
    "code": "01 21 13",
    "label": "Cash Allowances",
    "level": 4
  },
  {
    "code": "01 21 16",
    "label": "Contingency Allowances",
    "level": 4
  },
  {
    "code": "01 21 19",
    "label": "Testing and Inspecting Allowances",
    "level": 4
  },
  {
    "code": "01 21 23",
    "label": "Installation Allowances",
    "level": 4
  },
  {
    "code": "01 21 26",
    "label": "Product Allowances",
    "level": 4
  },
  {
    "code": "01 21 29",
    "label": "Quantity Allowances",
    "level": 4
  },
  {
    "code": "01 21 43",
    "label": "Time Allowances",
    "level": 4
  },
  {
    "code": "01 22 00",
    "label": "Unit Prices",
    "level": 3
  },
  {
    "code": "01 22 13",
    "label": "Unit Price Measurement",
    "level": 4
  },
  {
    "code": "01 22 16",
    "label": "Unit Price Payment",
    "level": 4
  },
  {
    "code": "01 23 00",
    "label": "Alternates",
    "level": 3
  },
  {
    "code": "01 24 00",
    "label": "Value Analysis",
    "level": 3
  },
  {
    "code": "01 24 13",
    "label": "Value Engineering",
    "level": 4
  },
  {
    "code": "01 25 00",
    "label": "Substitution Procedures",
    "level": 3
  },
  {
    "code": "01 25 13",
    "label": "Product Substitution Procedures",
    "level": 4
  },
  {
    "code": "01 25 16",
    "label": "Execution Substitution Procedures",
    "level": 4
  },
  {
    "code": "01 26 00",
    "label": "Contract Modification Procedures",
    "level": 3
  },
  {
    "code": "01 26 13",
    "label": "Requests for Interpretation",
    "level": 4
  },
  {
    "code": "01 26 19",
    "label": "Clarification Notices",
    "level": 4
  },
  {
    "code": "01 26 33",
    "label": "Minor Changes in the Work",
    "level": 4
  },
  {
    "code": "01 26 36",
    "label": "Supplemental Instructions",
    "level": 4
  },
  {
    "code": "01 26 39",
    "label": "Field Orders",
    "level": 4
  },
  {
    "code": "01 26 43",
    "label": "Amendments",
    "level": 4
  },
  {
    "code": "01 26 46",
    "label": "Construction Change Directives",
    "level": 4
  },
  {
    "code": "01 26 49",
    "label": "Work Change Directives",
    "level": 4
  },
  {
    "code": "01 26 53",
    "label": "Proposal Requests",
    "level": 4
  },
  {
    "code": "01 26 54",
    "label": "Proposal Worksheet Summaries",
    "level": 4
  },
  {
    "code": "01 26 57",
    "label": "Change Order Requests",
    "level": 4
  },
  {
    "code": "01 26 63",
    "label": "Change Orders",
    "level": 4
  },
  {
    "code": "01 29 00",
    "label": "Payment Procedures",
    "level": 3
  },
  {
    "code": "01 29 73",
    "label": "Schedule of Values",
    "level": 4
  },
  {
    "code": "01 29 76",
    "label": "Progress Payment Procedures",
    "level": 4
  },
  {
    "code": "01 29 83",
    "label": "Payment Procedures for Testing Laboratory Services",
    "level": 4
  },
  {
    "code": "01 30 00",
    "label": "Administrative Requirements",
    "level": 2
  },
  {
    "code": "01 31 00",
    "label": "Project Management and Coordination",
    "level": 3
  },
  {
    "code": "01 31 13",
    "label": "Project Coordination",
    "level": 4
  },
  {
    "code": "01 31 14",
    "label": "Facility Services Coordination",
    "level": 4
  },
  {
    "code": "01 31 16",
    "label": "Multiple Contract Coordination",
    "level": 4
  },
  {
    "code": "01 31 19",
    "label": "Project Meetings",
    "level": 4
  },
  {
    "code": "01 31 19.13",
    "label": "Preconstruction Meetings",
    "level": 5
  },
  {
    "code": "01 31 19.16",
    "label": "Site Mobilization Meetings",
    "level": 5
  },
  {
    "code": "01 31 19.23",
    "label": "Progress Meetings",
    "level": 5
  },
  {
    "code": "01 31 19.33",
    "label": "Preinstallation Meetings",
    "level": 5
  },
  {
    "code": "01 31 23",
    "label": "Project Web Site",
    "level": 4
  },
  {
    "code": "01 31 26",
    "label": "Electronic Communication Protocols",
    "level": 4
  },
  {
    "code": "01 32 00",
    "label": "Construction Progress Documentation",
    "level": 3
  },
  {
    "code": "01 32 13",
    "label": "Scheduling of Work",
    "level": 4
  },
  {
    "code": "01 32 16",
    "label": "Construction Progress Schedule",
    "level": 4
  },
  {
    "code": "01 32 16.13",
    "label": "Network Analysis Schedules",
    "level": 5
  },
  {
    "code": "01 32 19",
    "label": "Submittals Schedule",
    "level": 4
  },
  {
    "code": "01 32 23",
    "label": "Survey and Layout Data",
    "level": 4
  },
  {
    "code": "01 32 26",
    "label": "Construction Progress Reporting",
    "level": 4
  },
  {
    "code": "01 32 29",
    "label": "Periodic Work Observation",
    "level": 4
  },
  {
    "code": "01 32 33",
    "label": "Photographic Documentation",
    "level": 4
  },
  {
    "code": "01 32 36",
    "label": "Video Monitoring and Documentation",
    "level": 4
  },
  {
    "code": "01 32 43",
    "label": "Purchase Order Tracking",
    "level": 4
  },
  {
    "code": "01 33 00",
    "label": "Submittal Procedures",
    "level": 3
  },
  {
    "code": "01 33 13",
    "label": "Certificates",
    "level": 4
  },
  {
    "code": "01 33 16",
    "label": "Design Data",
    "level": 4
  },
  {
    "code": "01 33 19",
    "label": "Field Test Reporting",
    "level": 4
  },
  {
    "code": "01 33 23",
    "label": "Shop Drawings, Product Data, and Samples",
    "level": 4
  },
  {
    "code": "01 33 26",
    "label": "Source Quality Control Reporting",
    "level": 4
  },
  {
    "code": "01 33 29",
    "label": "Sustainable Design Reporting",
    "level": 4
  },
  {
    "code": "01 33 29.01",
    "label": "Material Cost Summary Form",
    "level": 5
  },
  {
    "code": "01 33 29.02",
    "label": "Wood-Containing Product List",
    "level": 5
  },
  {
    "code": "01 33 29.03",
    "label": "Metal-Containing Product List",
    "level": 5
  },
  {
    "code": "01 33 29.04",
    "label": "Material Content Form",
    "level": 5
  },
  {
    "code": "01 33 29.05",
    "label": "New Product Source Form",
    "level": 5
  },
  {
    "code": "01 33 29.06",
    "label": "Reused Product Form",
    "level": 5
  },
  {
    "code": "01 33 29.07",
    "label": "Prohibited Content Installer Certification",
    "level": 5
  },
  {
    "code": "01 35 00",
    "label": "Special Procedures",
    "level": 3
  },
  {
    "code": "01 35 03",
    "label": "Conservation Treatment Procedures",
    "level": 4
  },
  {
    "code": "01 35 13",
    "label": "Special Project Procedures",
    "level": 4
  },
  {
    "code": "01 35 13.13",
    "label": "Special Project Procedures for Airport Facilities",
    "level": 5
  },
  {
    "code": "01 35 13.16",
    "label": "Special Project Procedures for Detention Facilities",
    "level": 5
  },
  {
    "code": "01 35 13.19",
    "label": "Special Project Procedures for Healthcare Facilities",
    "level": 5
  },
  {
    "code": "01 35 13.26",
    "label": "Special Project Procedures for Clean Rooms",
    "level": 5
  },
  {
    "code": "01 35 13.43",
    "label": "Special Project Procedures for Contaminated Sites",
    "level": 5
  },
  {
    "code": "01 35 16",
    "label": "Alteration Project Procedures",
    "level": 4
  },
  {
    "code": "01 35 23",
    "label": "Owner Safety Requirements",
    "level": 4
  },
  {
    "code": "01 35 26",
    "label": "Governmental Safety Requirements",
    "level": 4
  },
  {
    "code": "01 35 29",
    "label": "Health, Safety, and Emergency Response Procedures",
    "level": 4
  },
  {
    "code": "01 35 29.13",
    "label": "Health, Safety, and Emergency Response Procedures for Contaminated Sites",
    "level": 5
  },
  {
    "code": "01 35 33",
    "label": "Infection Control Procedures",
    "level": 4
  },
  {
    "code": "01 35 43",
    "label": "Environmental Procedures",
    "level": 4
  },
  {
    "code": "01 35 43.13",
    "label": "Environmental Procedures for Hazardous Materials",
    "level": 5
  },
  {
    "code": "01 35 43.16",
    "label": "Environmental Procedures for Toxic Materials",
    "level": 5
  },
  {
    "code": "01 35 46",
    "label": "Indoor Air Quality Procedures",
    "level": 4
  },
  {
    "code": "01 35 53",
    "label": "Security Procedures",
    "level": 4
  },
  {
    "code": "01 35 63",
    "label": "Sustainability Certification Project Requirements",
    "level": 4
  },
  {
    "code": "01 35 66",
    "label": "Sustainability Certification Project Procedures",
    "level": 4
  },
  {
    "code": "01 35 73",
    "label": "Delegated Design Procedures",
    "level": 4
  },
  {
    "code": "01 35 91",
    "label": "Period Treatment Procedures",
    "level": 4
  },
  {
    "code": "01 40 00",
    "label": "Quality Requirements",
    "level": 2
  },
  {
    "code": "01 41 00",
    "label": "Regulatory Requirements",
    "level": 3
  },
  {
    "code": "01 41 13",
    "label": "Codes",
    "level": 4
  },
  {
    "code": "01 41 16",
    "label": "Laws",
    "level": 4
  },
  {
    "code": "01 41 19",
    "label": "Rules",
    "level": 4
  },
  {
    "code": "01 41 23",
    "label": "Fees",
    "level": 4
  },
  {
    "code": "01 41 26",
    "label": "Permit Requirements",
    "level": 4
  },
  {
    "code": "01 42 00",
    "label": "References",
    "level": 3
  },
  {
    "code": "01 42 13",
    "label": "Abbreviations and Acronyms",
    "level": 4
  },
  {
    "code": "01 42 16",
    "label": "Definitions",
    "level": 4
  },
  {
    "code": "01 42 19",
    "label": "Reference Standards",
    "level": 4
  },
  {
    "code": "01 43 00",
    "label": "Quality Assurance",
    "level": 3
  },
  {
    "code": "01 43 13",
    "label": "Manufacturer Qualifications",
    "level": 4
  },
  {
    "code": "01 43 16",
    "label": "Supplier Qualifications",
    "level": 4
  },
  {
    "code": "01 43 19",
    "label": "Fabricator Qualifications",
    "level": 4
  },
  {
    "code": "01 43 23",
    "label": "Installer Qualifications",
    "level": 4
  },
  {
    "code": "01 43 26",
    "label": "Testing and Inspecting Agency Qualifications",
    "level": 4
  },
  {
    "code": "01 43 29",
    "label": "Code-Required Special Inspector Qualifications",
    "level": 4
  },
  {
    "code": "01 43 33",
    "label": "Manufacturer's Field Services",
    "level": 4
  },
  {
    "code": "01 43 36",
    "label": "Field Samples",
    "level": 4
  },
  {
    "code": "01 43 39",
    "label": "Mockups",
    "level": 4
  },
  {
    "code": "01 45 00",
    "label": "Quality Control",
    "level": 3
  },
  {
    "code": "01 45 13",
    "label": "Source Quality Control Procedures",
    "level": 4
  },
  {
    "code": "01 45 16",
    "label": "Field Quality Control Procedures",
    "level": 4
  },
  {
    "code": "01 45 16.13",
    "label": "Contractor Quality Control",
    "level": 5
  },
  {
    "code": "01 45 23",
    "label": "Testing and Inspecting Services",
    "level": 4
  },
  {
    "code": "01 45 26",
    "label": "Plant Inspection Procedures",
    "level": 4
  },
  {
    "code": "01 45 29",
    "label": "Testing Laboratory Services",
    "level": 4
  },
  {
    "code": "01 45 33",
    "label": "Code-Required Special Inspections and Procedures",
    "level": 4
  },
  {
    "code": "01 50 00",
    "label": "Temporary Facilities and Controls",
    "level": 2
  },
  {
    "code": "01 51 00",
    "label": "Temporary Utilities",
    "level": 3
  },
  {
    "code": "01 51 13",
    "label": "Temporary Electricity",
    "level": 4
  },
  {
    "code": "01 51 16",
    "label": "Temporary Fire Protection",
    "level": 4
  },
  {
    "code": "01 51 19",
    "label": "Temporary Fuel Oil",
    "level": 4
  },
  {
    "code": "01 51 23",
    "label": "Temporary Heating, Cooling, and Ventilating",
    "level": 4
  },
  {
    "code": "01 51 26",
    "label": "Temporary Lighting",
    "level": 4
  },
  {
    "code": "01 51 29",
    "label": "Temporary Natural-Gas",
    "level": 4
  },
  {
    "code": "01 51 33",
    "label": "Temporary Telecommunications",
    "level": 4
  },
  {
    "code": "01 51 36",
    "label": "Temporary Water",
    "level": 4
  },
  {
    "code": "01 52 00",
    "label": "Construction Facilities",
    "level": 3
  },
  {
    "code": "01 52 13",
    "label": "Field Offices and Sheds",
    "level": 4
  },
  {
    "code": "01 52 16",
    "label": "First Aid Facilities",
    "level": 4
  },
  {
    "code": "01 52 19",
    "label": "Sanitary Facilities",
    "level": 4
  },
  {
    "code": "01 53 00",
    "label": "Temporary Construction",
    "level": 3
  },
  {
    "code": "01 53 13",
    "label": "Temporary Bridges",
    "level": 4
  },
  {
    "code": "01 53 16",
    "label": "Temporary Decking",
    "level": 4
  },
  {
    "code": "01 53 19",
    "label": "Temporary Overpasses",
    "level": 4
  },
  {
    "code": "01 53 23",
    "label": "Temporary Ramps",
    "level": 4
  },
  {
    "code": "01 53 26",
    "label": "Temporary Runarounds",
    "level": 4
  },
  {
    "code": "01 54 00",
    "label": "Construction Aids",
    "level": 3
  },
  {
    "code": "01 54 13",
    "label": "Temporary Elevators",
    "level": 4
  },
  {
    "code": "01 54 16",
    "label": "Temporary Hoists",
    "level": 4
  },
  {
    "code": "01 54 19",
    "label": "Temporary Cranes",
    "level": 4
  },
  {
    "code": "01 54 23",
    "label": "Temporary Scaffolding and Platforms",
    "level": 4
  },
  {
    "code": "01 54 26",
    "label": "Temporary Swing Staging",
    "level": 4
  },
  {
    "code": "01 55 00",
    "label": "Vehicular Access and Parking",
    "level": 3
  },
  {
    "code": "01 55 13",
    "label": "Temporary Access Roads",
    "level": 4
  },
  {
    "code": "01 55 16",
    "label": "Haul Routes",
    "level": 4
  },
  {
    "code": "01 55 19",
    "label": "Temporary Parking Areas",
    "level": 4
  },
  {
    "code": "01 55 23",
    "label": "Temporary Roads",
    "level": 4
  },
  {
    "code": "01 55 26",
    "label": "Traffic Control",
    "level": 4
  },
  {
    "code": "01 55 29",
    "label": "Staging Areas",
    "level": 4
  },
  {
    "code": "01 56 00",
    "label": "Temporary Barriers and Enclosures",
    "level": 3
  },
  {
    "code": "01 56 13",
    "label": "Temporary Air Barriers",
    "level": 4
  },
  {
    "code": "01 56 16",
    "label": "Temporary Dust Barriers",
    "level": 4
  },
  {
    "code": "01 56 19",
    "label": "Temporary Noise Barriers",
    "level": 4
  },
  {
    "code": "01 56 23",
    "label": "Temporary Barricades",
    "level": 4
  },
  {
    "code": "01 56 26",
    "label": "Temporary Fencing",
    "level": 4
  },
  {
    "code": "01 56 29",
    "label": "Temporary Protective Walkways",
    "level": 4
  },
  {
    "code": "01 56 33",
    "label": "Temporary Security Barriers",
    "level": 4
  },
  {
    "code": "01 56 36",
    "label": "Temporary Security Enclosures",
    "level": 4
  },
  {
    "code": "01 56 39",
    "label": "Temporary Tree and Plant Protection",
    "level": 4
  },
  {
    "code": "01 57 00",
    "label": "Temporary Controls",
    "level": 3
  },
  {
    "code": "01 57 13",
    "label": "Temporary Erosion and Sediment Control",
    "level": 4
  },
  {
    "code": "01 57 16",
    "label": "Temporary Pest Control",
    "level": 4
  },
  {
    "code": "01 57 19",
    "label": "Temporary Environmental Controls",
    "level": 4
  },
  {
    "code": "01 57 23",
    "label": "Temporary Storm Water Pollution Control",
    "level": 4
  },
  {
    "code": "01 57 26",
    "label": "Site Watering for Dust Control",
    "level": 4
  },
  {
    "code": "01 58 00",
    "label": "Project Identification",
    "level": 3
  },
  {
    "code": "01 58 13",
    "label": "Temporary Project Signage",
    "level": 4
  },
  {
    "code": "01 58 16",
    "label": "Temporary Interior Signage",
    "level": 4
  },
  {
    "code": "01 60 00",
    "label": "Product Requirements",
    "level": 2
  },
  {
    "code": "01 61 00",
    "label": "Common Product Requirements",
    "level": 3
  },
  {
    "code": "01 61 13",
    "label": "Software Licensing Requirements",
    "level": 4
  },
  {
    "code": "01 62 00",
    "label": "Product Options",
    "level": 3
  },
  {
    "code": "01 64 00",
    "label": "Owner-Furnished Products",
    "level": 3
  },
  {
    "code": "01 65 00",
    "label": "Product Delivery Requirements",
    "level": 3
  },
  {
    "code": "01 66 00",
    "label": "Product Storage and Handling Requirements",
    "level": 3
  },
  {
    "code": "01 66 13",
    "label": "Product Storage and Handling Requirements for Hazardous Materials",
    "level": 4
  },
  {
    "code": "01 66 16",
    "label": "Product Storage and Handling Requirements for Toxic Materials",
    "level": 4
  },
  {
    "code": "01 70 00",
    "label": "Execution and Closeout Requirements",
    "level": 2
  },
  {
    "code": "01 71 00",
    "label": "Examination and Preparation",
    "level": 3
  },
  {
    "code": "01 71 13",
    "label": "Mobilization",
    "level": 4
  },
  {
    "code": "01 71 16",
    "label": "Acceptance of Conditions",
    "level": 4
  },
  {
    "code": "01 71 23",
    "label": "Field Engineering",
    "level": 4
  },
  {
    "code": "01 71 23.13",
    "label": "Construction Layout",
    "level": 5
  },
  {
    "code": "01 71 23.16",
    "label": "Construction Surveying",
    "level": 5
  },
  {
    "code": "01 71 33",
    "label": "Protection of Adjacent Construction",
    "level": 4
  },
  {
    "code": "01 71 36",
    "label": "Non-Destructive Concrete Examination",
    "level": 4
  },
  {
    "code": "01 73 00",
    "label": "Execution",
    "level": 3
  },
  {
    "code": "01 73 13",
    "label": "Application",
    "level": 4
  },
  {
    "code": "01 73 16",
    "label": "Erection",
    "level": 4
  },
  {
    "code": "01 73 19",
    "label": "Installation",
    "level": 4
  },
  {
    "code": "01 73 23",
    "label": "Bracing and Anchoring",
    "level": 4
  },
  {
    "code": "01 73 26",
    "label": "Existing Products",
    "level": 4
  },
  {
    "code": "01 73 29",
    "label": "Cutting and Patching",
    "level": 4
  },
  {
    "code": "01 74 00",
    "label": "Cleaning and Waste Management",
    "level": 3
  },
  {
    "code": "01 74 13",
    "label": "Progress Cleaning",
    "level": 4
  },
  {
    "code": "01 74 16",
    "label": "Site Maintenance",
    "level": 4
  },
  {
    "code": "01 74 19",
    "label": "Construction Waste Management and Disposal",
    "level": 4
  },
  {
    "code": "01 74 23",
    "label": "Final Cleaning",
    "level": 4
  },
  {
    "code": "01 75 00",
    "label": "Starting and Adjusting",
    "level": 3
  },
  {
    "code": "01 75 13",
    "label": "Checkout Procedures",
    "level": 4
  },
  {
    "code": "01 75 16",
    "label": "Startup Procedures",
    "level": 4
  },
  {
    "code": "01 76 00",
    "label": "Protecting Installed Construction",
    "level": 3
  },
  {
    "code": "01 77 00",
    "label": "Closeout Procedures",
    "level": 3
  },
  {
    "code": "01 77 13",
    "label": "Preliminary Closeout Reviews",
    "level": 4
  },
  {
    "code": "01 77 16",
    "label": "Final Closeout Review",
    "level": 4
  },
  {
    "code": "01 77 19",
    "label": "Closeout Requirements",
    "level": 4
  },
  {
    "code": "01 78 00",
    "label": "Closeout Submittals",
    "level": 3
  },
  {
    "code": "01 78 13",
    "label": "Completion and Correction List",
    "level": 4
  },
  {
    "code": "01 78 19",
    "label": "Maintenance Contracts",
    "level": 4
  },
  {
    "code": "01 78 23",
    "label": "Operation and Maintenance Data",
    "level": 4
  },
  {
    "code": "01 78 23.13",
    "label": "Operation Data",
    "level": 5
  },
  {
    "code": "01 78 23.16",
    "label": "Maintenance Data",
    "level": 5
  },
  {
    "code": "01 78 23.19",
    "label": "Preventative Maintenance Instructions",
    "level": 5
  },
  {
    "code": "01 78 29",
    "label": "Final Site Survey",
    "level": 4
  },
  {
    "code": "01 78 33",
    "label": "Bonds",
    "level": 4
  },
  {
    "code": "01 78 36",
    "label": "Warranties",
    "level": 4
  },
  {
    "code": "01 78 39",
    "label": "Project Record Documents",
    "level": 4
  },
  {
    "code": "01 78 43",
    "label": "Spare Parts",
    "level": 4
  },
  {
    "code": "01 78 46",
    "label": "Extra Stock Materials",
    "level": 4
  },
  {
    "code": "01 78 53",
    "label": "Sustainable Design Closeout Documentation",
    "level": 4
  },
  {
    "code": "01 79 00",
    "label": "Demonstration and Training",
    "level": 3
  },
  {
    "code": "01 80 00",
    "label": "Performance Requirements",
    "level": 2
  },
  {
    "code": "01 81 00",
    "label": "Facility Performance Requirements",
    "level": 3
  },
  {
    "code": "01 81 13",
    "label": "Sustainable Design Requirements",
    "level": 4
  },
  {
    "code": "01 81 16",
    "label": "Facility Environmental Requirements",
    "level": 4
  },
  {
    "code": "01 81 19",
    "label": "Indoor Air Quality Requirements",
    "level": 4
  },
  {
    "code": "01 82 00",
    "label": "Facility Substructure Performance Requirements",
    "level": 3
  },
  {
    "code": "01 82 13",
    "label": "Foundation Performance Requirements",
    "level": 4
  },
  {
    "code": "01 82 16",
    "label": "Basement Construction Performance Requirements",
    "level": 4
  },
  {
    "code": "01 83 00",
    "label": "Facility Shell Performance Requirements",
    "level": 3
  },
  {
    "code": "01 83 13",
    "label": "Superstructure Performance Requirements",
    "level": 4
  },
  {
    "code": "01 83 16",
    "label": "Exterior Enclosure Performance Requirements",
    "level": 4
  },
  {
    "code": "01 83 19",
    "label": "Roofing Performance Requirements",
    "level": 4
  },
  {
    "code": "01 84 00",
    "label": "Interiors Performance Requirements",
    "level": 3
  },
  {
    "code": "01 84 13",
    "label": "Interior Construction Performance Requirements",
    "level": 4
  },
  {
    "code": "01 84 16",
    "label": "Stairways Performance Requirements",
    "level": 4
  },
  {
    "code": "01 84 19",
    "label": "Interior Finishes Performance Requirements",
    "level": 4
  },
  {
    "code": "01 85 00",
    "label": "Conveying Equipment Performance Requirements",
    "level": 3
  },
  {
    "code": "01 86 00",
    "label": "Facility Services Performance Requirements",
    "level": 3
  },
  {
    "code": "01 86 13",
    "label": "Fire Suppression Performance Requirements",
    "level": 4
  },
  {
    "code": "01 86 16",
    "label": "Plumbing Performance Requirements",
    "level": 4
  },
  {
    "code": "01 86 19",
    "label": "HVAC Performance Requirements",
    "level": 4
  },
  {
    "code": "01 86 23",
    "label": "Integrated Automation Performance Requirements",
    "level": 4
  },
  {
    "code": "01 86 26",
    "label": "Electrical Performance Requirements",
    "level": 4
  },
  {
    "code": "01 86 29",
    "label": "Communications Performance Requirements",
    "level": 4
  },
  {
    "code": "01 86 33",
    "label": "Electronic Safety and Security Performance Requirements",
    "level": 4
  },
  {
    "code": "01 87 00",
    "label": "Equipment and Furnishings Performance Requirements",
    "level": 3
  },
  {
    "code": "01 87 13",
    "label": "Equipment Performance Requirements",
    "level": 4
  },
  {
    "code": "01 87 16",
    "label": "Furnishings Performance Requirements",
    "level": 4
  },
  {
    "code": "01 88 00",
    "label": "Other Facility Construction Performance Requirements",
    "level": 3
  },
  {
    "code": "01 88 13",
    "label": "Special Construction Performance Requirements",
    "level": 4
  },
  {
    "code": "01 88 16",
    "label": "Selective Construction Performance Requirements",
    "level": 4
  },
  {
    "code": "01 89 00",
    "label": "Site Construction Performance Requirements",
    "level": 3
  },
  {
    "code": "01 89 13",
    "label": "Site Preparation Performance Requirements",
    "level": 4
  },
  {
    "code": "01 89 16",
    "label": "Site Improvements Performance Requirements",
    "level": 4
  },
  {
    "code": "01 89 19",
    "label": "Site Plumbing Utilities Performance Requirements",
    "level": 4
  },
  {
    "code": "01 89 23",
    "label": "Site HVAC Utilities Performance Requirements",
    "level": 4
  },
  {
    "code": "01 89 26",
    "label": "Site Electrical Utilities Performance Requirements",
    "level": 4
  },
  {
    "code": "01 89 29",
    "label": "Other Site Construction Performance Requirements",
    "level": 4
  },
  {
    "code": "01 90 00",
    "label": "Life Cycle Activities",
    "level": 2
  },
  {
    "code": "01 91 00",
    "label": "Commissioning",
    "level": 3
  },
  {
    "code": "01 91 13",
    "label": "General Commissioning Requirements",
    "level": 4
  },
  {
    "code": "01 91 16",
    "label": "Facility Substructure Commissioning",
    "level": 4
  },
  {
    "code": "01 91 16.13",
    "label": "Foundation Commissioning",
    "level": 5
  },
  {
    "code": "01 91 16.53",
    "label": "Basement Construction Commissioning",
    "level": 5
  },
  {
    "code": "01 91 19",
    "label": "Facility Shell Commissioning",
    "level": 4
  },
  {
    "code": "01 91 19.13",
    "label": "Superstructure Commissioning",
    "level": 5
  },
  {
    "code": "01 91 19.43",
    "label": "Exterior Enclosure Commissioning",
    "level": 5
  },
  {
    "code": "01 91 19.73",
    "label": "Roofing Commissioning",
    "level": 5
  },
  {
    "code": "01 91 23",
    "label": "Interiors Commissioning",
    "level": 4
  },
  {
    "code": "01 91 23.13",
    "label": "Interior Construction Commissioning",
    "level": 5
  },
  {
    "code": "01 91 23.43",
    "label": "Stairways Commissioning",
    "level": 5
  },
  {
    "code": "01 91 23.73",
    "label": "Interior Finishes Commissioning",
    "level": 5
  },
  {
    "code": "01 92 00",
    "label": "Facility Operation",
    "level": 3
  },
  {
    "code": "01 92 13",
    "label": "Facility Operation Procedures",
    "level": 4
  },
  {
    "code": "01 93 00",
    "label": "Facility Maintenance",
    "level": 3
  },
  {
    "code": "01 93 13",
    "label": "Facility Maintenance Procedures",
    "level": 4
  },
  {
    "code": "01 93 16",
    "label": "Recycling Programs",
    "level": 4
  },
  {
    "code": "01 94 00",
    "label": "Facility Decommissioning",
    "level": 3
  },
  {
    "code": "01 94 13",
    "label": "Facility Decommissioning Procedures",
    "level": 4
  },
  {
    "code": "02 00 00",
    "label": "Existing Conditions",
    "level": 1
  },
  {
    "code": "02 01 00",
    "label": "Maintenance of Existing Conditions",
    "level": 3
  },
  {
    "code": "02 01 50",
    "label": "Maintenance of Site Remediation",
    "level": 4
  },
  {
    "code": "02 01 65",
    "label": "Maintenance of Underground Storage Tank Removal",
    "level": 4
  },
  {
    "code": "02 01 80",
    "label": "Maintenance of Facility Remediation",
    "level": 4
  },
  {
    "code": "02 01 86",
    "label": "Maintenance of Hazardous Waste Drum Handling",
    "level": 4
  },
  {
    "code": "02 03 00",
    "label": "Conservation Treatment for Existing Period Conditions",
    "level": 3
  },
  {
    "code": "02 03 01",
    "label": "Maintenance of Existing Period Conditions",
    "level": 4
  },
  {
    "code": "02 03 01.19",
    "label": "Mothballing Period Structures",
    "level": 5
  },
  {
    "code": "02 03 41",
    "label": "Selective Demolition for Period Structures",
    "level": 4
  },
  {
    "code": "02 03 42",
    "label": "Removal and Salvage of Period Construction Materials",
    "level": 4
  },
  {
    "code": "02 03 43",
    "label": "Period Structure Relocating",
    "level": 4
  },
  {
    "code": "02 03 44",
    "label": "Shoring and Support of Period Structures",
    "level": 4
  },
  {
    "code": "02 05 00",
    "label": "Common Work Results for Existing Conditions",
    "level": 3
  },
  {
    "code": "02 05 19",
    "label": "Geosynthetics for Existing Conditions",
    "level": 4
  },
  {
    "code": "02 05 19.13",
    "label": "Geotextiles for Existing Conditions",
    "level": 5
  },
  {
    "code": "02 05 19.16",
    "label": "Geomembranes for Existing Conditions",
    "level": 5
  },
  {
    "code": "02 05 19.19",
    "label": "Geogrids for Existing Conditions",
    "level": 5
  },
  {
    "code": "02 06 00",
    "label": "Schedules for Existing Conditions",
    "level": 3
  },
  {
    "code": "02 06 13",
    "label": "Geotechnical Baseline Report",
    "level": 4
  },
  {
    "code": "02 06 14",
    "label": "Geotechnical Data Report",
    "level": 4
  },
  {
    "code": "02 06 30",
    "label": "Schedules for Subsurface Investigations",
    "level": 4
  },
  {
    "code": "02 06 30.13",
    "label": "Boring or Test Pit Log Schedule",
    "level": 5
  },
  {
    "code": "02 06 50",
    "label": "Schedules for Site Remediation",
    "level": 4
  },
  {
    "code": "02 06 65",
    "label": "Schedules for Underground Storage Tank Removal",
    "level": 4
  },
  {
    "code": "02 06 80",
    "label": "Schedules for Facility Remediation",
    "level": 4
  },
  {
    "code": "02 06 86",
    "label": "Schedules for Hazardous Waste Drum Handling",
    "level": 4
  },
  {
    "code": "02 08 00",
    "label": "Commissioning of Existing Conditions",
    "level": 3
  },
  {
    "code": "02 20 00",
    "label": "Assessment",
    "level": 2
  },
  {
    "code": "02 21 00",
    "label": "Surveys",
    "level": 3
  },
  {
    "code": "02 21 13",
    "label": "Site Surveys",
    "level": 4
  },
  {
    "code": "02 21 13.13",
    "label": "Boundary and Survey Markers",
    "level": 5
  },
  {
    "code": "02 21 13.23",
    "label": "Archeological and Historic Surveys",
    "level": 5
  },
  {
    "code": "02 21 16",
    "label": "Measured Drawings",
    "level": 4
  },
  {
    "code": "02 22 00",
    "label": "Existing Conditions Assessment",
    "level": 3
  },
  {
    "code": "02 22 13",
    "label": "Movement and Vibration Assessment",
    "level": 4
  },
  {
    "code": "02 22 16",
    "label": "Acoustic Assessment",
    "level": 4
  },
  {
    "code": "02 22 19",
    "label": "Traffic Assessment",
    "level": 4
  },
  {
    "code": "02 22 23",
    "label": "Accessibility Assessment",
    "level": 4
  },
  {
    "code": "02 24 00",
    "label": "Environmental Assessment",
    "level": 3
  },
  {
    "code": "02 24 13",
    "label": "Natural Environment Assessment",
    "level": 4
  },
  {
    "code": "02 24 13.13",
    "label": "Air Assessment",
    "level": 5
  },
  {
    "code": "02 24 13.43",
    "label": "Water Assessment",
    "level": 5
  },
  {
    "code": "02 24 13.73",
    "label": "Land Assessment",
    "level": 5
  },
  {
    "code": "02 24 23",
    "label": "Chemical Sampling and Analysis of Soils",
    "level": 4
  },
  {
    "code": "02 24 43",
    "label": "Transboundary and Global Environmental Aspects Assessment",
    "level": 4
  },
  {
    "code": "02 25 00",
    "label": "Existing Material Assessment",
    "level": 3
  },
  {
    "code": "02 25 16",
    "label": "Existing Concrete Assessment",
    "level": 4
  },
  {
    "code": "02 25 16.13",
    "label": "Concrete Assessment Drilling",
    "level": 5
  },
  {
    "code": "02 25 19",
    "label": "Existing Masonry Assessment",
    "level": 4
  },
  {
    "code": "02 25 19.13",
    "label": "Masonry Assessment Drilling",
    "level": 5
  },
  {
    "code": "02 25 23",
    "label": "Existing Metals Assessment",
    "level": 4
  },
  {
    "code": "02 25 23.13",
    "label": "Welding Investigations",
    "level": 5
  },
  {
    "code": "02 25 26",
    "label": "Existing Wood, Plastics, and Composites Assessment",
    "level": 4
  },
  {
    "code": "02 25 29",
    "label": "Existing Thermal and Moisture Protection Assessment",
    "level": 4
  },
  {
    "code": "02 25 29.13",
    "label": "Waterproofing Investigations",
    "level": 5
  },
  {
    "code": "02 25 29.23",
    "label": "Roofing Investigations",
    "level": 5
  },
  {
    "code": "02 26 00",
    "label": "Hazardous Material Assessment",
    "level": 3
  },
  {
    "code": "02 26 23",
    "label": "Asbestos Assessment",
    "level": 4
  },
  {
    "code": "02 26 26",
    "label": "Lead Assessment",
    "level": 4
  },
  {
    "code": "02 26 29",
    "label": "Polychlorinated Biphenyl Assessment",
    "level": 4
  },
  {
    "code": "02 26 33",
    "label": "Biological Assessment",
    "level": 4
  },
  {
    "code": "02 26 33.13",
    "label": "Mold Assessment",
    "level": 5
  },
  {
    "code": "02 26 36",
    "label": "Hazardous Waste Drum Assessment",
    "level": 4
  },
  {
    "code": "02 30 00",
    "label": "Subsurface Investigation",
    "level": 2
  },
  {
    "code": "02 31 00",
    "label": "Geophysical Investigations",
    "level": 3
  },
  {
    "code": "02 31 13",
    "label": "Seismic Investigations",
    "level": 4
  },
  {
    "code": "02 31 16",
    "label": "Gravity Investigations",
    "level": 4
  },
  {
    "code": "02 31 19",
    "label": "Magnetic Investigations",
    "level": 4
  },
  {
    "code": "02 31 23",
    "label": "Electromagnetic Investigations",
    "level": 4
  },
  {
    "code": "02 31 26",
    "label": "Electrical Resistivity Investigations",
    "level": 4
  },
  {
    "code": "02 31 29",
    "label": "Magnetotelluric Investigations",
    "level": 4
  },
  {
    "code": "02 32 00",
    "label": "Geotechnical Investigations",
    "level": 3
  },
  {
    "code": "02 32 13",
    "label": "Subsurface Drilling and Sampling",
    "level": 4
  },
  {
    "code": "02 32 16",
    "label": "Material Testing",
    "level": 4
  },
  {
    "code": "02 32 19",
    "label": "Exploratory Excavations",
    "level": 4
  },
  {
    "code": "02 32 23",
    "label": "Geotechnical Monitoring Before Construction",
    "level": 4
  },
  {
    "code": "02 32 23.13",
    "label": "Groundwater Monitoring Before Construction",
    "level": 5
  },
  {
    "code": "02 40 00",
    "label": "Demolition and Structure Moving",
    "level": 2
  },
  {
    "code": "02 41 00",
    "label": "Demolition",
    "level": 3
  },
  {
    "code": "02 41 13",
    "label": "Selective Site Demolition",
    "level": 4
  },
  {
    "code": "02 41 13.13",
    "label": "Paving Removal",
    "level": 5
  },
  {
    "code": "02 41 13.23",
    "label": "Utility Line Removal",
    "level": 5
  },
  {
    "code": "02 41 13.33",
    "label": "Railtrack Removal",
    "level": 5
  },
  {
    "code": "02 41 16",
    "label": "Structure Demolition",
    "level": 4
  },
  {
    "code": "02 41 16.13",
    "label": "Building Demolition",
    "level": 5
  },
  {
    "code": "02 41 16.23",
    "label": "Tower Demolition",
    "level": 5
  },
  {
    "code": "02 41 16.33",
    "label": "Bridge Demolition",
    "level": 5
  },
  {
    "code": "02 41 16.43",
    "label": "Dam Demolition",
    "level": 5
  },
  {
    "code": "02 41 19",
    "label": "Selective Demolition",
    "level": 4
  },
  {
    "code": "02 41 19.13",
    "label": "Selective Building Demolition",
    "level": 5
  },
  {
    "code": "02 41 19.16",
    "label": "Selective Interior Demolition",
    "level": 5
  },
  {
    "code": "02 41 19.19",
    "label": "Selective Facility Services Demolition",
    "level": 5
  },
  {
    "code": "02 41 19.33",
    "label": "Selective Bridge Demolition",
    "level": 5
  },
  {
    "code": "02 42 00",
    "label": "Removal and Salvage of Construction Materials",
    "level": 3
  },
  {
    "code": "02 42 13",
    "label": "Deconstruction of Structures",
    "level": 4
  },
  {
    "code": "02 42 13.13",
    "label": "Deconstruction of Buildings",
    "level": 5
  },
  {
    "code": "02 43 00",
    "label": "Structure Moving",
    "level": 3
  },
  {
    "code": "02 43 13",
    "label": "Structure Relocation",
    "level": 4
  },
  {
    "code": "02 43 13.13",
    "label": "Building Relocation",
    "level": 5
  },
  {
    "code": "02 43 16",
    "label": "Structure Raising",
    "level": 4
  },
  {
    "code": "02 43 16.13",
    "label": "Building Raising",
    "level": 5
  },
  {
    "code": "02 50 00",
    "label": "Site Remediation",
    "level": 2
  },
  {
    "code": "02 51 00",
    "label": "Physical Decontamination",
    "level": 3
  },
  {
    "code": "02 51 13",
    "label": "Coagulation and Flocculation Decontamination",
    "level": 4
  },
  {
    "code": "02 51 16",
    "label": "Reverse-Osmosis Decontamination",
    "level": 4
  },
  {
    "code": "02 51 19",
    "label": "Solidification and Stabilization Decontamination",
    "level": 4
  },
  {
    "code": "02 51 23",
    "label": "Mechanical Filtration Decontamination",
    "level": 4
  },
  {
    "code": "02 51 26",
    "label": "Radioactive Decontamination",
    "level": 4
  },
  {
    "code": "02 51 29",
    "label": "Surface Cleaning Decontamination",
    "level": 4
  },
  {
    "code": "02 51 29.13",
    "label": "High-Pressure Water Cleaning Decontamination",
    "level": 5
  },
  {
    "code": "02 51 29.16",
    "label": "Vacuum Sweeping Cleaning Decontamination",
    "level": 5
  },
  {
    "code": "02 51 33",
    "label": "Surface Removal Decontamination",
    "level": 4
  },
  {
    "code": "02 51 33.13",
    "label": "Surface Removal Decontamination by Grinding",
    "level": 5
  },
  {
    "code": "02 51 33.16",
    "label": "Surface Removal Decontamination by Sand Blasting",
    "level": 5
  },
  {
    "code": "02 51 33.19",
    "label": "Surface Removal Decontamination by Ultrasound",
    "level": 5
  },
  {
    "code": "02 52 00",
    "label": "Chemical Decontamination",
    "level": 3
  },
  {
    "code": "02 52 13",
    "label": "Chemical Precipitation Decontamination",
    "level": 4
  },
  {
    "code": "02 52 16",
    "label": "Ion Change Decontamination",
    "level": 4
  },
  {
    "code": "02 52 19",
    "label": "Neutralization Decontamination",
    "level": 4
  },
  {
    "code": "02 53 00",
    "label": "Thermal Decontamination",
    "level": 3
  },
  {
    "code": "02 53 13",
    "label": "Incineration Decontamination",
    "level": 4
  },
  {
    "code": "02 53 13.13",
    "label": "Remediation of Contaminated Soils and Sludges by Incineration",
    "level": 5
  },
  {
    "code": "02 53 16",
    "label": "Thermal Desorption Decontamination",
    "level": 4
  },
  {
    "code": "02 53 16.13",
    "label": "Remediation of Contaminated Soils by Thermal Desorption",
    "level": 5
  },
  {
    "code": "02 53 19",
    "label": "Vitrification Decontamination",
    "level": 4
  },
  {
    "code": "02 54 00",
    "label": "Biological Decontamination",
    "level": 3
  },
  {
    "code": "02 54 13",
    "label": "Aerobic Processes Decontamination",
    "level": 4
  },
  {
    "code": "02 54 16",
    "label": "Anaerobic Processes Decontamination",
    "level": 4
  },
  {
    "code": "02 54 19",
    "label": "Bioremediation Decontamination",
    "level": 4
  },
  {
    "code": "02 54 19.13",
    "label": "Bioremediation Using Landfarming",
    "level": 5
  },
  {
    "code": "02 54 19.16",
    "label": "Bioremediation of Soils Using Windrow Composting",
    "level": 5
  },
  {
    "code": "02 54 19.19",
    "label": "Bioremediation Using Bacteria Injection",
    "level": 5
  },
  {
    "code": "02 54 23",
    "label": "Soil Washing through Separation/Solubilization",
    "level": 4
  },
  {
    "code": "02 54 26",
    "label": "Organic Decontamination",
    "level": 4
  },
  {
    "code": "02 55 00",
    "label": "Remediation Soil Stabilization",
    "level": 3
  },
  {
    "code": "02 56 00",
    "label": "Site Containment",
    "level": 3
  },
  {
    "code": "02 56 13",
    "label": "Waste Containment",
    "level": 4
  },
  {
    "code": "02 56 13.13",
    "label": "Geomembrane Waste Containment",
    "level": 5
  },
  {
    "code": "02 56 19",
    "label": "Gas Containment",
    "level": 4
  },
  {
    "code": "02 56 19.13",
    "label": "Fluid-Applied Gas Barrier",
    "level": 5
  },
  {
    "code": "02 57 00",
    "label": "Sinkhole Remediation",
    "level": 3
  },
  {
    "code": "02 57 13",
    "label": "Sinkhole Remediation by Grouting",
    "level": 4
  },
  {
    "code": "02 57 13.13",
    "label": "Sinkhole Remediation by Compaction Grouting",
    "level": 5
  },
  {
    "code": "02 57 13.16",
    "label": "Sinkhole Remediation by Cap Grouting",
    "level": 5
  },
  {
    "code": "02 57 16",
    "label": "Sinkhole Remediation by Backfilling",
    "level": 4
  },
  {
    "code": "02 58 00",
    "label": "Snow Control",
    "level": 3
  },
  {
    "code": "02 58 13",
    "label": "Snow Fencing",
    "level": 4
  },
  {
    "code": "02 58 16",
    "label": "Snow Avalanche Control",
    "level": 4
  },
  {
    "code": "02 60 00",
    "label": "Contaminated Site Material Removal",
    "level": 2
  },
  {
    "code": "02 61 00",
    "label": "Removal and Disposal of Contaminated Soils",
    "level": 3
  },
  {
    "code": "02 61 13",
    "label": "Excavation and Handling of Contaminated Material",
    "level": 4
  },
  {
    "code": "02 61 23",
    "label": "Removal and Disposal of Polychlorinate Biphenyl Contaminated Soils",
    "level": 4
  },
  {
    "code": "02 61 26",
    "label": "Removal and Disposal of Asbestos Contaminated Soils",
    "level": 4
  },
  {
    "code": "02 61 29",
    "label": "Removal and Disposal of Organically Contaminated Soils",
    "level": 4
  },
  {
    "code": "02 62 00",
    "label": "Hazardous Waste Recovery Processes",
    "level": 3
  },
  {
    "code": "02 62 13",
    "label": "Air and Steam Stripping",
    "level": 4
  },
  {
    "code": "02 62 16",
    "label": "Soil Vapor Extraction",
    "level": 4
  },
  {
    "code": "02 62 19",
    "label": "Soil Washing and Flushing",
    "level": 4
  },
  {
    "code": "02 65 00",
    "label": "Underground Storage Tank Removal",
    "level": 3
  },
  {
    "code": "02 70 00",
    "label": "Water Remediation",
    "level": 2
  },
  {
    "code": "02 71 00",
    "label": "Groundwater Treatment",
    "level": 3
  },
  {
    "code": "02 72 00",
    "label": "Water Decontamination",
    "level": 3
  },
  {
    "code": "02 72 13",
    "label": "Chemical Water Decontamination",
    "level": 4
  },
  {
    "code": "02 72 16",
    "label": "Biological Water Decontamination",
    "level": 4
  },
  {
    "code": "02 72 19",
    "label": "Electrolysis Water Decontamination",
    "level": 4
  },
  {
    "code": "02 80 00",
    "label": "Facility Remediation",
    "level": 2
  },
  {
    "code": "02 81 00",
    "label": "Transportation and Disposal of Hazardous Materials",
    "level": 3
  },
  {
    "code": "02 82 00",
    "label": "Asbestos Remediation",
    "level": 3
  },
  {
    "code": "02 82 13",
    "label": "Asbestos Abatement",
    "level": 4
  },
  {
    "code": "02 82 13.13",
    "label": "Glovebag Asbestos Abatement",
    "level": 5
  },
  {
    "code": "02 82 13.16",
    "label": "Precautions for Asbestos Abatement",
    "level": 5
  },
  {
    "code": "02 82 13.19",
    "label": "Asbestos Floor Tile and Mastic Abatement",
    "level": 5
  },
  {
    "code": "02 82 13.33",
    "label": "Asbestos Abatement for Utilities",
    "level": 5
  },
  {
    "code": "02 82 16",
    "label": "Engineering Control of Asbestos Containing Materials",
    "level": 4
  },
  {
    "code": "02 82 33",
    "label": "Removal and Disposal of Asbestos Containing Materials",
    "level": 4
  },
  {
    "code": "02 83 00",
    "label": "Lead Remediation",
    "level": 3
  },
  {
    "code": "02 83 13",
    "label": "Lead Hazard Control Activities",
    "level": 4
  },
  {
    "code": "02 83 19",
    "label": "Lead-Based Paint Remediation",
    "level": 4
  },
  {
    "code": "02 83 19.13",
    "label": "Lead-Based Paint Abatement",
    "level": 5
  },
  {
    "code": "02 83 33",
    "label": "Removal and Disposal of Material Containing Lead",
    "level": 4
  },
  {
    "code": "02 83 33.13",
    "label": "Lead-Based Paint Removal and Disposal",
    "level": 5
  },
  {
    "code": "02 84 00",
    "label": "Polychlorinate Biphenyl Remediation",
    "level": 3
  },
  {
    "code": "02 84 16",
    "label": "Handling of Lighting Ballasts and Lamps Containing PCBs and Mercury",
    "level": 4
  },
  {
    "code": "02 84 33",
    "label": "Removal and Disposal of Polychlorinate Biphenyls",
    "level": 4
  },
  {
    "code": "02 86 00",
    "label": "Hazardous Waste Drum Handling",
    "level": 3
  },
  {
    "code": "02 87 00",
    "label": "Biohazard Remediation",
    "level": 3
  },
  {
    "code": "02 87 13",
    "label": "Mold Remediation",
    "level": 4
  },
  {
    "code": "02 87 13.13",
    "label": "Precautions for Mold Remediation",
    "level": 5
  },
  {
    "code": "02 87 13.16",
    "label": "Mold Remediation Preparation and Containment",
    "level": 5
  },
  {
    "code": "02 87 13.19",
    "label": "Mold Remediation Clearance Air Sampling",
    "level": 5
  },
  {
    "code": "02 87 13.33",
    "label": "Removal and Disposal of Materials with Mold",
    "level": 5
  },
  {
    "code": "02 87 16",
    "label": "Excrement Removal",
    "level": 4
  },
  {
    "code": "02 87 16.13",
    "label": "Bird Excrement Removal",
    "level": 5
  },
  {
    "code": "02 87 16.16",
    "label": "Rodent Excrement Removal",
    "level": 5
  },
  {
    "code": "03 00 00",
    "label": "Concrete",
    "level": 1
  },
  {
    "code": "03 01 00",
    "label": "Maintenance of Concrete",
    "level": 3
  },
  {
    "code": "03 01 10",
    "label": "Maintenance of Concrete Forming and Accessories",
    "level": 4
  },
  {
    "code": "03 01 20",
    "label": "Maintenance of Concrete Reinforcing",
    "level": 4
  },
  {
    "code": "03 01 23",
    "label": "Maintenance of Stressing Tendons",
    "level": 4
  },
  {
    "code": "03 01 30",
    "label": "Maintenance of Cast-in-Place Concrete",
    "level": 4
  },
  {
    "code": "03 01 30.51",
    "label": "Cleaning of Cast-in-Place Concrete",
    "level": 5
  },
  {
    "code": "03 01 30.61",
    "label": "Resurfacing of Cast-in-Place Concrete",
    "level": 5
  },
  {
    "code": "03 01 30.71",
    "label": "Rehabilitation of Cast-in-Place Concrete",
    "level": 5
  },
  {
    "code": "03 01 30.72",
    "label": "Strengthening of Cast-in-Place Concrete",
    "level": 5
  },
  {
    "code": "03 01 40",
    "label": "Maintenance of Precast Concrete",
    "level": 4
  },
  {
    "code": "03 01 40.51",
    "label": "Cleaning of Precast Concrete",
    "level": 5
  },
  {
    "code": "03 01 40.61",
    "label": "Resurfacing of Precast Concrete",
    "level": 5
  },
  {
    "code": "03 01 40.71",
    "label": "Rehabilitation of Precast Concrete",
    "level": 5
  },
  {
    "code": "03 01 40.72",
    "label": "Strengthening of Precast Concrete",
    "level": 5
  },
  {
    "code": "03 01 50",
    "label": "Maintenance of Cast Decks and Underlayment",
    "level": 4
  },
  {
    "code": "03 01 50.51",
    "label": "Cleaning Cast Decks and Underlayment",
    "level": 5
  },
  {
    "code": "03 01 50.61",
    "label": "Resurfacing of Cast Decks and Underlayment",
    "level": 5
  },
  {
    "code": "03 01 50.71",
    "label": "Rehabilitation of Cast Decks and Underlayment",
    "level": 5
  },
  {
    "code": "03 01 50.72",
    "label": "Strengthening of Cast Decks and Underlayment",
    "level": 5
  },
  {
    "code": "03 01 60",
    "label": "Maintenance of Grouting",
    "level": 4
  },
  {
    "code": "03 01 70",
    "label": "Maintenance of Mass Concrete",
    "level": 4
  },
  {
    "code": "03 01 80",
    "label": "Maintenance of Concrete Cutting and Boring",
    "level": 4
  },
  {
    "code": "03 03 00",
    "label": "Conservation Treatment for Period Concrete",
    "level": 3
  },
  {
    "code": "03 03 30",
    "label": "Conservation Treatment for Period Cast-in-Place Concrete",
    "level": 4
  },
  {
    "code": "03 03 31",
    "label": "Conservation Treatment for Period Structural Concrete",
    "level": 4
  },
  {
    "code": "03 03 33",
    "label": "Conservation Treatment for Period Architectural Concrete",
    "level": 4
  },
  {
    "code": "03 05 00",
    "label": "Common Work Results for Concrete",
    "level": 3
  },
  {
    "code": "03 05 05",
    "label": "Selective Demolition for Concrete",
    "level": 4
  },
  {
    "code": "03 06 00",
    "label": "Schedules for Concrete",
    "level": 3
  },
  {
    "code": "03 06 10",
    "label": "Schedules for Concrete Forming and Accessories",
    "level": 4
  },
  {
    "code": "03 06 20",
    "label": "Schedules for Concrete Reinforcing",
    "level": 4
  },
  {
    "code": "03 06 20.13",
    "label": "Concrete Beam Reinforcing Schedule",
    "level": 5
  },
  {
    "code": "03 06 20.16",
    "label": "Concrete Slab Reinforcing Schedule",
    "level": 5
  },
  {
    "code": "03 06 30",
    "label": "Schedules for Cast-in-Place Concrete",
    "level": 4
  },
  {
    "code": "03 06 30.13",
    "label": "Concrete Footing Schedule",
    "level": 5
  },
  {
    "code": "03 06 30.16",
    "label": "Concrete Column Schedule",
    "level": 5
  },
  {
    "code": "03 06 30.19",
    "label": "Concrete Slab Schedule",
    "level": 5
  },
  {
    "code": "03 06 30.23",
    "label": "Concrete Shaft Schedule",
    "level": 5
  },
  {
    "code": "03 06 30.26",
    "label": "Concrete Beam Schedule",
    "level": 5
  },
  {
    "code": "03 06 40",
    "label": "Schedules for Precast Concrete",
    "level": 4
  },
  {
    "code": "03 31 00",
    "label": "Structural Concrete",
    "level": 3
  },
  {
    "code": "03 31 13",
    "label": "Heavyweight Structural Concrete",
    "level": 4
  },
  {
    "code": "03 31 16",
    "label": "Lightweight Structural Concrete",
    "level": 4
  },
  {
    "code": "03 31 19",
    "label": "Shrinkage-Compensating Structural Concrete",
    "level": 4
  },
  {
    "code": "03 31 23",
    "label": "High-Performance Structural Concrete",
    "level": 4
  },
  {
    "code": "03 31 24",
    "label": "Ultra High-Performance Structural Concrete",
    "level": 4
  },
  {
    "code": "03 31 26",
    "label": "Self-Compacting Concrete",
    "level": 4
  },
  {
    "code": "03 33 00",
    "label": "Architectural Concrete",
    "level": 3
  },
  {
    "code": "03 33 13",
    "label": "Heavyweight Architectural Concrete",
    "level": 4
  },
  {
    "code": "03 33 16",
    "label": "Lightweight Architectural Concrete",
    "level": 4
  },
  {
    "code": "03 34 00",
    "label": "Low Density Concrete",
    "level": 3
  },
  {
    "code": "03 35 00",
    "label": "Concrete Finishing",
    "level": 3
  },
  {
    "code": "03 35 13",
    "label": "High-Tolerance Concrete Floor Finishing",
    "level": 4
  },
  {
    "code": "03 35 16",
    "label": "Heavy-Duty Concrete Floor Finishing",
    "level": 4
  },
  {
    "code": "03 35 19",
    "label": "Colored Concrete Finishing",
    "level": 4
  },
  {
    "code": "03 35 23",
    "label": "Exposed Aggregate Concrete Finishing",
    "level": 4
  },
  {
    "code": "03 35 26",
    "label": "Grooved Concrete Surface Finishing",
    "level": 4
  },
  {
    "code": "03 35 29",
    "label": "Tooled Concrete Finishing",
    "level": 4
  },
  {
    "code": "03 35 33",
    "label": "Stamped Concrete Finishing",
    "level": 4
  },
  {
    "code": "03 35 43",
    "label": "Polished Concrete Finishing",
    "level": 4
  },
  {
    "code": "03 35 43.13",
    "label": "Polished and Dyed Concrete Finishing",
    "level": 5
  },
  {
    "code": "03 35 43.16",
    "label": "Polished and Stained Concrete Finishing",
    "level": 5
  },
  {
    "code": "03 35 46",
    "label": "Concrete Topical Treatments",
    "level": 4
  },
  {
    "code": "03 37 00",
    "label": "Specialty Placed Concrete",
    "level": 3
  },
  {
    "code": "03 37 13",
    "label": "Shotcrete",
    "level": 4
  },
  {
    "code": "03 37 16",
    "label": "Pumped Concrete",
    "level": 4
  },
  {
    "code": "03 37 19",
    "label": "Pneumatically Placed Concrete",
    "level": 4
  },
  {
    "code": "03 37 23",
    "label": "Roller-Compacted Concrete",
    "level": 4
  },
  {
    "code": "03 37 26",
    "label": "Underwater Placed Concrete",
    "level": 4
  },
  {
    "code": "03 38 00",
    "label": "Post-Tensioned Concrete",
    "level": 3
  },
  {
    "code": "03 38 13",
    "label": "Post-Tensioned Concrete Preparation",
    "level": 4
  },
  {
    "code": "03 38 16",
    "label": "Unbonded Post-Tensioned Concrete",
    "level": 4
  },
  {
    "code": "03 38 19",
    "label": "Bonded Post-Tensioned Concrete",
    "level": 4
  },
  {
    "code": "03 39 00",
    "label": "Concrete Curing",
    "level": 3
  },
  {
    "code": "03 39 13",
    "label": "Water Concrete Curing",
    "level": 4
  },
  {
    "code": "03 39 16",
    "label": "Sand Concrete Curing",
    "level": 4
  },
  {
    "code": "03 39 23",
    "label": "Membrane Concrete Curing",
    "level": 4
  },
  {
    "code": "03 39 23.13",
    "label": "Chemical Compound Membrane Concrete Curing",
    "level": 5
  },
  {
    "code": "03 39 23.23",
    "label": "Sheet Membrane Concrete Curing",
    "level": 5
  },
  {
    "code": "03 40 00",
    "label": "Precast Concrete",
    "level": 2
  },
  {
    "code": "03 41 00",
    "label": "Precast Structural Concrete",
    "level": 3
  },
  {
    "code": "03 41 13",
    "label": "Precast Concrete Hollow Core Planks",
    "level": 4
  },
  {
    "code": "03 41 16",
    "label": "Precast Concrete Slabs",
    "level": 4
  },
  {
    "code": "03 41 23",
    "label": "Precast Concrete Stairs",
    "level": 4
  },
  {
    "code": "03 41 33",
    "label": "Precast Structural Pretensioned Concrete",
    "level": 4
  },
  {
    "code": "03 41 36",
    "label": "Precast Structural Post-Tensioned Concrete",
    "level": 4
  },
  {
    "code": "03 45 00",
    "label": "Precast Architectural Concrete",
    "level": 3
  },
  {
    "code": "03 45 13",
    "label": "Faced Architectural Precast Concrete",
    "level": 4
  },
  {
    "code": "03 45 33",
    "label": "Precast Architectural Pretensioned Concrete",
    "level": 4
  },
  {
    "code": "03 45 36",
    "label": "Precast Architectural Post-Tensioned Concrete",
    "level": 4
  },
  {
    "code": "03 47 00",
    "label": "Site-Cast Concrete",
    "level": 3
  },
  {
    "code": "03 47 13",
    "label": "Tilt-Up Concrete",
    "level": 4
  },
  {
    "code": "03 47 16",
    "label": "Lift-Slab Concrete",
    "level": 4
  },
  {
    "code": "03 48 00",
    "label": "Precast Concrete Specialties",
    "level": 3
  },
  {
    "code": "03 48 13",
    "label": "Precast Concrete Bollards",
    "level": 4
  },
  {
    "code": "03 48 13.11",
    "label": "Precast Concrete Security Bollards",
    "level": 5
  },
  {
    "code": "03 48 16",
    "label": "Precast Concrete Splash Blocks",
    "level": 4
  },
  {
    "code": "03 48 19",
    "label": "Precast Concrete Stair Treads",
    "level": 4
  },
  {
    "code": "03 48 26",
    "label": "Precast Concrete Parking Bumpers",
    "level": 4
  },
  {
    "code": "03 48 33",
    "label": "Precast Pre-Framed Concrete Panels",
    "level": 4
  },
  {
    "code": "03 48 43",
    "label": "Precast Concrete Trim",
    "level": 4
  },
  {
    "code": "03 49 00",
    "label": "Glass-Fiber-Reinforced Concrete",
    "level": 3
  },
  {
    "code": "03 49 13",
    "label": "Glass-Fiber-Reinforced Concrete Column Covers",
    "level": 4
  },
  {
    "code": "03 49 16",
    "label": "Glass-Fiber-Reinforced Concrete Spandrels",
    "level": 4
  },
  {
    "code": "03 49 43",
    "label": "Glass-Fiber-Reinforced Concrete Trim",
    "level": 4
  },
  {
    "code": "03 50 00",
    "label": "Cast Decks and Underlayment",
    "level": 2
  },
  {
    "code": "03 51 00",
    "label": "Cast Roof Decks",
    "level": 3
  },
  {
    "code": "03 51 13",
    "label": "Cementitious Wood Fiber Decks",
    "level": 4
  },
  {
    "code": "03 51 16",
    "label": "Gypsum Concrete Roof Decks",
    "level": 4
  },
  {
    "code": "03 52 00",
    "label": "Lightweight Concrete Roof Insulation",
    "level": 3
  },
  {
    "code": "03 52 13",
    "label": "Composite Concrete Roof Insulation",
    "level": 4
  },
  {
    "code": "03 52 16",
    "label": "Lightweight Insulating Concrete",
    "level": 4
  },
  {
    "code": "03 52 16.13",
    "label": "Lightweight Cellular Insulating Concrete",
    "level": 5
  },
  {
    "code": "03 52 16.16",
    "label": "Lightweight Aggregate Insulating Concrete",
    "level": 5
  },
  {
    "code": "03 53 00",
    "label": "Concrete Topping",
    "level": 3
  },
  {
    "code": "03 53 13",
    "label": "Emery-Aggregate Concrete Topping",
    "level": 4
  },
  {
    "code": "03 53 16",
    "label": "Iron-Aggregate Concrete Topping",
    "level": 4
  },
  {
    "code": "03 53 19",
    "label": "Concrete Overlayment",
    "level": 4
  },
  {
    "code": "03 54 00",
    "label": "Cast Underlayment",
    "level": 3
  },
  {
    "code": "03 54 13",
    "label": "Gypsum Cement Underlayment",
    "level": 4
  },
  {
    "code": "03 54 16",
    "label": "Hydraulic Cement Underlayment",
    "level": 4
  },
  {
    "code": "03 60 00",
    "label": "Grouting",
    "level": 2
  },
  {
    "code": "03 61 00",
    "label": "Cementitious Grouting",
    "level": 3
  },
  {
    "code": "03 61 13",
    "label": "Dry-Pack Grouting",
    "level": 4
  },
  {
    "code": "03 62 00",
    "label": "Non-Shrink Grouting",
    "level": 3
  },
  {
    "code": "03 62 13",
    "label": "Non-Metallic Non-Shrink Grouting",
    "level": 4
  },
  {
    "code": "03 62 16",
    "label": "Metallic Non-Shrink Grouting",
    "level": 4
  },
  {
    "code": "03 63 00",
    "label": "Epoxy Grouting",
    "level": 3
  },
  {
    "code": "03 64 00",
    "label": "Injection Grouting",
    "level": 3
  },
  {
    "code": "03 64 23",
    "label": "Epoxy Injection Grouting",
    "level": 4
  },
  {
    "code": "03 70 00",
    "label": "Mass Concrete",
    "level": 2
  },
  {
    "code": "03 71 00",
    "label": "Mass Concrete for Raft Foundations",
    "level": 3
  },
  {
    "code": "03 72 00",
    "label": "Mass Concrete for Dams",
    "level": 3
  },
  {
    "code": "03 80 00",
    "label": "Concrete Cutting and Boring",
    "level": 2
  },
  {
    "code": "03 81 00",
    "label": "Concrete Cutting",
    "level": 3
  },
  {
    "code": "03 81 13",
    "label": "Flat Concrete Sawing",
    "level": 4
  },
  {
    "code": "03 81 16",
    "label": "Track Mounted Concrete Wall Sawing",
    "level": 4
  },
  {
    "code": "03 81 19",
    "label": "Wire Concrete Wall Sawing",
    "level": 4
  },
  {
    "code": "03 81 23",
    "label": "Hand Concrete Wall Sawing",
    "level": 4
  },
  {
    "code": "03 81 26",
    "label": "Chain Concrete Wall Sawing",
    "level": 4
  },
  {
    "code": "03 82 00",
    "label": "Concrete Boring",
    "level": 3
  },
  {
    "code": "03 82 13",
    "label": "Concrete Core Drilling",
    "level": 4
  },
  {
    "code": "04 00 00",
    "label": "Masonry",
    "level": 1
  },
  {
    "code": "04 01 00",
    "label": "Maintenance of Masonry",
    "level": 3
  },
  {
    "code": "04 01 20",
    "label": "Maintenance of Unit Masonry",
    "level": 4
  },
  {
    "code": "04 01 20.41",
    "label": "Unit Masonry Stabilization",
    "level": 5
  },
  {
    "code": "04 01 20.51",
    "label": "Unit Masonry Maintenance",
    "level": 5
  },
  {
    "code": "04 01 20.52",
    "label": "Unit Masonry Cleaning",
    "level": 5
  },
  {
    "code": "04 01 20.91",
    "label": "Unit Masonry Restoration",
    "level": 5
  },
  {
    "code": "04 01 20.93",
    "label": "Testing and Sampling Brick Units for Restoration",
    "level": 5
  },
  {
    "code": "04 01 40",
    "label": "Maintenance of Stone Assemblies",
    "level": 4
  },
  {
    "code": "04 01 40.51",
    "label": "Stone Maintenance",
    "level": 5
  },
  {
    "code": "04 01 40.52",
    "label": "Stone Cleaning",
    "level": 5
  },
  {
    "code": "04 01 40.91",
    "label": "Stone Restoration",
    "level": 5
  },
  {
    "code": "04 01 50",
    "label": "Maintenance of Refractory Masonry",
    "level": 4
  },
  {
    "code": "04 01 60",
    "label": "Maintenance of Corrosion-Resistant Masonry",
    "level": 4
  },
  {
    "code": "04 01 70",
    "label": "Maintenance of Manufactured Masonry",
    "level": 4
  },
  {
    "code": "04 03 00",
    "label": "Conservation Treatment for Period Masonry",
    "level": 3
  },
  {
    "code": "04 03 01",
    "label": "Maintenance for Period Masonry",
    "level": 4
  },
  {
    "code": "04 03 01.13",
    "label": "Period Masonry Cleaning",
    "level": 5
  },
  {
    "code": "04 03 05",
    "label": "Common Work Results for Period Masonry",
    "level": 4
  },
  {
    "code": "04 03 05.13",
    "label": "Period Masonry Mortaring",
    "level": 5
  },
  {
    "code": "04 03 05.16",
    "label": "Period Masonry Grouting",
    "level": 5
  },
  {
    "code": "04 03 05.19",
    "label": "Period Masonry Anchorage and Reinforcing",
    "level": 5
  },
  {
    "code": "04 03 21",
    "label": "Conservation Treatment for Period Clay Unit Masonry",
    "level": 4
  },
  {
    "code": "04 03 21.19",
    "label": "Clay Brick Conservation Treatment",
    "level": 5
  },
  {
    "code": "04 03 21.21",
    "label": "Terra Cotta Conservation Treatment",
    "level": 5
  },
  {
    "code": "04 03 21.23",
    "label": "Fiance Block Conservation Treatment",
    "level": 5
  },
  {
    "code": "04 03 22",
    "label": "Conservation Treatment for Period Concrete Unit Masonry",
    "level": 4
  },
  {
    "code": "04 03 24",
    "label": "Conservation Treatment for Period Adobe Unit Masonry",
    "level": 4
  },
  {
    "code": "04 03 43",
    "label": "Conservation Treatment for Period Stone Masonry",
    "level": 4
  },
  {
    "code": "04 05 00",
    "label": "Common Work Results for Masonry",
    "level": 3
  },
  {
    "code": "04 05 05",
    "label": "Selective Demolition for Masonry",
    "level": 4
  },
  {
    "code": "04 05 13",
    "label": "Masonry Mortaring",
    "level": 4
  },
  {
    "code": "04 05 13.16",
    "label": "Chemical-Resistant Masonry Mortaring",
    "level": 5
  },
  {
    "code": "04 05 13.19",
    "label": "Epoxy Masonry Mortaring",
    "level": 5
  },
  {
    "code": "04 05 13.23",
    "label": "Surface Bonding Masonry Mortaring",
    "level": 5
  },
  {
    "code": "04 05 13.26",
    "label": "Engineered Masonry Mortaring",
    "level": 5
  },
  {
    "code": "04 05 13.29",
    "label": "Refractory Masonry Mortaring",
    "level": 5
  },
  {
    "code": "04 05 13.91",
    "label": "Masonry Restoration Mortaring",
    "level": 5
  },
  {
    "code": "04 05 16",
    "label": "Masonry Grouting",
    "level": 4
  },
  {
    "code": "04 05 16.16",
    "label": "Chemical-Resistant Masonry Grouting",
    "level": 5
  },
  {
    "code": "04 05 16.26",
    "label": "Engineered Masonry Grouting",
    "level": 5
  },
  {
    "code": "04 05 19",
    "label": "Masonry Anchorage and Reinforcing",
    "level": 4
  },
  {
    "code": "04 05 19.13",
    "label": "Continuous Joint Reinforcing",
    "level": 5
  },
  {
    "code": "04 05 19.16",
    "label": "Masonry Anchors",
    "level": 5
  },
  {
    "code": "04 05 19.26",
    "label": "Masonry Reinforcing Bars",
    "level": 5
  },
  {
    "code": "04 05 19.29",
    "label": "Stone Anchors",
    "level": 5
  },
  {
    "code": "04 05 21",
    "label": "Masonry Strengthening",
    "level": 4
  },
  {
    "code": "04 05 23",
    "label": "Masonry Accessories",
    "level": 4
  },
  {
    "code": "04 05 23.13",
    "label": "Masonry Control and Expansion Joints",
    "level": 5
  },
  {
    "code": "04 05 23.16",
    "label": "Masonry Embedded Flashing",
    "level": 5
  },
  {
    "code": "04 05 23.19",
    "label": "Masonry Cavity Drainage, Weepholes, and Vents",
    "level": 5
  },
  {
    "code": "04 06 00",
    "label": "Schedules for Masonry",
    "level": 3
  },
  {
    "code": "04 06 20",
    "label": "Schedules for Unit Masonry",
    "level": 4
  },
  {
    "code": "04 06 20.13",
    "label": "Masonry Unit Schedule",
    "level": 5
  },
  {
    "code": "04 06 40",
    "label": "Schedules for Stone Assemblies",
    "level": 4
  },
  {
    "code": "04 06 50",
    "label": "Schedules for Refractory Masonry",
    "level": 4
  },
  {
    "code": "04 06 60",
    "label": "Schedules for Corrosion-Resistant Masonry",
    "level": 4
  },
  {
    "code": "04 06 70",
    "label": "Schedules for Manufactured Masonry",
    "level": 4
  },
  {
    "code": "04 08 00",
    "label": "Commissioning of Masonry",
    "level": 3
  },
  {
    "code": "04 20 00",
    "label": "Unit Masonry",
    "level": 2
  },
  {
    "code": "04 21 00",
    "label": "Clay Unit Masonry",
    "level": 3
  },
  {
    "code": "04 21 13",
    "label": "Brick Masonry",
    "level": 4
  },
  {
    "code": "04 21 13.13",
    "label": "Brick Veneer Masonry",
    "level": 5
  },
  {
    "code": "04 21 13.23",
    "label": "Surface-Bonded Brick Masonry",
    "level": 5
  },
  {
    "code": "04 21 16",
    "label": "Ceramic Glazed Clay Masonry",
    "level": 4
  },
  {
    "code": "04 21 19",
    "label": "Clay Tile Masonry",
    "level": 4
  },
  {
    "code": "04 21 23",
    "label": "Structural Clay Tile Masonry",
    "level": 4
  },
  {
    "code": "04 21 26",
    "label": "Glazed Structural Clay Tile Masonry",
    "level": 4
  },
  {
    "code": "04 21 29",
    "label": "Terra Cotta Masonry",
    "level": 4
  },
  {
    "code": "04 22 00",
    "label": "Concrete Unit Masonry",
    "level": 3
  },
  {
    "code": "04 22 00.13",
    "label": "Concrete Unit Veneer Masonry",
    "level": 5
  },
  {
    "code": "04 22 00.16",
    "label": "Surface-Bonded Concrete Unit Masonry",
    "level": 5
  },
  {
    "code": "04 22 19",
    "label": "Insulated Concrete Unit Masonry",
    "level": 4
  },
  {
    "code": "04 22 23",
    "label": "Architectural Concrete Unit Masonry",
    "level": 4
  },
  {
    "code": "04 22 23.13",
    "label": "Exposed Aggregate Concrete Unit Masonry",
    "level": 5
  },
  {
    "code": "04 22 23.16",
    "label": "Fluted Concrete Unit Masonry",
    "level": 5
  },
  {
    "code": "04 22 23.19",
    "label": "Molded-Face Concrete Unit Masonry",
    "level": 5
  },
  {
    "code": "04 22 23.23",
    "label": "Prefaced Concrete Unit Masonry",
    "level": 5
  },
  {
    "code": "04 22 23.26",
    "label": "Sound-Absorbing Concrete Unit Masonry",
    "level": 5
  },
  {
    "code": "04 22 23.29",
    "label": "Split-Face Concrete Unit Masonry",
    "level": 5
  },
  {
    "code": "04 22 26",
    "label": "Autoclaved Aerated Concrete Unit Masonry",
    "level": 4
  },
  {
    "code": "04 22 33",
    "label": "Interlocking Concrete Unit Masonry",
    "level": 4
  },
  {
    "code": "04 23 00",
    "label": "Glass Unit Masonry",
    "level": 3
  },
  {
    "code": "04 23 13",
    "label": "Vertical Glass Unit Masonry",
    "level": 4
  },
  {
    "code": "04 23 16",
    "label": "Glass Unit Masonry Floors",
    "level": 4
  },
  {
    "code": "04 23 19",
    "label": "Glass Unit Masonry Skylights",
    "level": 4
  },
  {
    "code": "04 24 00",
    "label": "Adobe Unit Masonry",
    "level": 3
  },
  {
    "code": "04 24 13",
    "label": "Site-Cast Adobe Unit Masonry",
    "level": 4
  },
  {
    "code": "04 24 16",
    "label": "Manufactured Adobe Unit Masonry",
    "level": 4
  },
  {
    "code": "04 25 00",
    "label": "Unit Masonry Panels",
    "level": 3
  },
  {
    "code": "04 25 13",
    "label": "Metal-Supported Unit Masonry Panels",
    "level": 4
  },
  {
    "code": "04 26 00",
    "label": "Single-Wythe Unit Masonry",
    "level": 3
  },
  {
    "code": "04 26 13",
    "label": "Masonry Veneer",
    "level": 4
  },
  {
    "code": "04 27 00",
    "label": "Multiple-Wythe Unit Masonry",
    "level": 3
  },
  {
    "code": "04 27 13",
    "label": "Composite Unit Masonry",
    "level": 4
  },
  {
    "code": "04 27 23",
    "label": "Cavity Wall Unit Masonry",
    "level": 4
  },
  {
    "code": "04 28 00",
    "label": "Concrete Form Masonry Units",
    "level": 3
  },
  {
    "code": "04 28 13",
    "label": "Dry-Stacked, Concrete-Filled Masonry Units",
    "level": 4
  },
  {
    "code": "04 28 23",
    "label": "Mortar-Set, Concrete-Filled Masonry Units",
    "level": 4
  },
  {
    "code": "04 29 00",
    "label": "Engineered Unit Masonry",
    "level": 3
  },
  {
    "code": "04 40 00",
    "label": "Stone Assemblies",
    "level": 2
  },
  {
    "code": "04 41 00",
    "label": "Dry-Placed Stone",
    "level": 3
  },
  {
    "code": "04 42 00",
    "label": "Exterior Stone Cladding",
    "level": 3
  },
  {
    "code": "04 42 13",
    "label": "Masonry-Supported Stone Cladding",
    "level": 4
  },
  {
    "code": "04 42 16",
    "label": "Steel-Stud-Supported Stone Cladding",
    "level": 4
  },
  {
    "code": "04 42 19",
    "label": "Strongback-Frame-Supported Stone Cladding",
    "level": 4
  },
  {
    "code": "04 42 23",
    "label": "Truss-Supported Stone Cladding",
    "level": 4
  },
  {
    "code": "04 42 26",
    "label": "Grid-System-Supported Stone Cladding",
    "level": 4
  },
  {
    "code": "04 42 43",
    "label": "Stone Panels for Curtain Walls",
    "level": 4
  },
  {
    "code": "04 43 00",
    "label": "Stone Masonry",
    "level": 3
  },
  {
    "code": "04 43 13",
    "label": "Stone Masonry Veneer",
    "level": 4
  },
  {
    "code": "04 43 13.13",
    "label": "Anchored Stone Masonry Veneer",
    "level": 5
  },
  {
    "code": "04 43 13.16",
    "label": "Adhered Stone Masonry Veneer",
    "level": 5
  },
  {
    "code": "04 43 16",
    "label": "Stone Fabrications",
    "level": 4
  },
  {
    "code": "04 50 00",
    "label": "Refractory Masonry",
    "level": 2
  },
  {
    "code": "04 51 00",
    "label": "Flue Liner Masonry",
    "level": 3
  },
  {
    "code": "04 52 00",
    "label": "Combustion Chamber Masonry",
    "level": 3
  },
  {
    "code": "04 53 00",
    "label": "Castable Refractory Masonry",
    "level": 3
  },
  {
    "code": "04 54 00",
    "label": "Refractory Brick Masonry",
    "level": 3
  },
  {
    "code": "04 57 00",
    "label": "Masonry Fireplaces",
    "level": 3
  },
  {
    "code": "04 57 33",
    "label": "Modular Masonry Fireplaces",
    "level": 4
  },
  {
    "code": "04 60 00",
    "label": "Corrosion-Resistant Masonry",
    "level": 2
  },
  {
    "code": "04 61 00",
    "label": "Chemical-Resistant Brick Masonry",
    "level": 3
  },
  {
    "code": "04 62 00",
    "label": "Vitrified Clay Liner Plate",
    "level": 3
  },
  {
    "code": "04 70 00",
    "label": "Manufactured Masonry",
    "level": 2
  },
  {
    "code": "04 71 00",
    "label": "Manufactured Brick Masonry",
    "level": 3
  },
  {
    "code": "04 71 13",
    "label": "Calcium Silicate Manufactured Brick Masonry",
    "level": 4
  },
  {
    "code": "04 72 00",
    "label": "Cast Stone Masonry",
    "level": 3
  },
  {
    "code": "04 73 00",
    "label": "Manufactured Stone Masonry",
    "level": 3
  },
  {
    "code": "04 73 13",
    "label": "Calcium Silicate Manufactured Stone Masonry",
    "level": 4
  },
  {
    "code": "05 00 00",
    "label": "Metals",
    "level": 1
  },
  {
    "code": "05 01 00",
    "label": "Maintenance of Metals",
    "level": 3
  },
  {
    "code": "05 01 10",
    "label": "Maintenance of Structural Metal Framing",
    "level": 4
  },
  {
    "code": "05 01 20",
    "label": "Maintenance of Metal Joists",
    "level": 4
  },
  {
    "code": "05 01 30",
    "label": "Maintenance of Metal Decking",
    "level": 4
  },
  {
    "code": "05 01 40",
    "label": "Maintenance of Cold-Formed Metal Framing",
    "level": 4
  },
  {
    "code": "05 01 50",
    "label": "Maintenance of Metal Fabrications",
    "level": 4
  },
  {
    "code": "05 01 70",
    "label": "Maintenance of Decorative Metal",
    "level": 4
  },
  {
    "code": "05 01 70.91",
    "label": "Historic Treatment of Decorative Metal",
    "level": 5
  },
  {
    "code": "05 03 00",
    "label": "Conservation Treatment for Period Metals",
    "level": 3
  },
  {
    "code": "05 03 12",
    "label": "Conservation Treatment for Period Structural Steel",
    "level": 4
  },
  {
    "code": "05 03 12.13",
    "label": "Conservation Treatment for Period Architecturally Exposed Steel",
    "level": 5
  },
  {
    "code": "05 03 12.23",
    "label": "Conservation Treatment for Period Structural Steel for Buildings",
    "level": 5
  },
  {
    "code": "05 03 51",
    "label": "Conservation Treatment for Period Metal Stairs",
    "level": 4
  },
  {
    "code": "05 03 58",
    "label": "Conservation Treatment for Period Column Covers",
    "level": 4
  },
  {
    "code": "05 03 70",
    "label": "Conservation Treatment for Period Decorative Metal",
    "level": 4
  },
  {
    "code": "05 03 71",
    "label": "Conservation Treatment for Period Decorative Metal Stairs",
    "level": 4
  },
  {
    "code": "05 03 73",
    "label": "Conservation Treatment for Period Decorative Metal Railings",
    "level": 4
  },
  {
    "code": "05 03 75",
    "label": "Conservation Treatment for Period Decorative Formed Metal",
    "level": 4
  },
  {
    "code": "05 03 76",
    "label": "Conservation Treatment for Period Decorative Forged Metal",
    "level": 4
  },
  {
    "code": "05 05 00",
    "label": "Common Work Results for Metals",
    "level": 3
  },
  {
    "code": "05 05 05",
    "label": "Selective Demolition for Metals",
    "level": 4
  },
  {
    "code": "05 05 13",
    "label": "Shop-Applied Coatings for Metal",
    "level": 4
  },
  {
    "code": "05 05 19",
    "label": "Post-Installed Concrete Anchors",
    "level": 4
  },
  {
    "code": "05 05 23",
    "label": "Metal Fastenings",
    "level": 4
  },
  {
    "code": "05 05 53",
    "label": "Security Metal Fastenings",
    "level": 4
  },
  {
    "code": "05 06 00",
    "label": "Schedules for Metals",
    "level": 3
  },
  {
    "code": "05 06 10",
    "label": "Schedules for Structural Metal Framing",
    "level": 4
  },
  {
    "code": "05 06 10.13",
    "label": "Steel Column Schedule",
    "level": 5
  },
  {
    "code": "05 06 10.16",
    "label": "Steel Beam Schedule",
    "level": 5
  },
  {
    "code": "05 06 20",
    "label": "Schedules for Metal Joists",
    "level": 4
  },
  {
    "code": "05 06 20.13",
    "label": "Steel Joist Schedule",
    "level": 5
  },
  {
    "code": "05 06 30",
    "label": "Schedules for Metal Decking",
    "level": 4
  },
  {
    "code": "05 06 40",
    "label": "Schedules for Cold-Formed Metal Framing",
    "level": 4
  },
  {
    "code": "05 06 50",
    "label": "Schedules for Metal Fabrications",
    "level": 4
  },
  {
    "code": "05 06 70",
    "label": "Schedules for Decorative Metal",
    "level": 4
  },
  {
    "code": "05 08 00",
    "label": "Commissioning of Metals",
    "level": 3
  },
  {
    "code": "05 10 00",
    "label": "Structural Metal Framing",
    "level": 2
  },
  {
    "code": "05 12 00",
    "label": "Structural Steel Framing",
    "level": 3
  },
  {
    "code": "05 12 13",
    "label": "Architecturally-Exposed Structural Steel Framing",
    "level": 4
  },
  {
    "code": "05 12 16",
    "label": "Fabricated Fireproofed Steel Columns",
    "level": 4
  },
  {
    "code": "05 12 19",
    "label": "Buckling Restrained Braces",
    "level": 4
  },
  {
    "code": "05 12 23",
    "label": "Structural Steel for Buildings",
    "level": 4
  },
  {
    "code": "05 12 33",
    "label": "Structural Steel for Bridges",
    "level": 4
  },
  {
    "code": "05 13 00",
    "label": "Structural Stainless-Steel Framing",
    "level": 3
  },
  {
    "code": "05 14 00",
    "label": "Structural Aluminum Framing",
    "level": 3
  },
  {
    "code": "05 14 13",
    "label": "Architecturally-Exposed Structural Aluminum Framing",
    "level": 4
  },
  {
    "code": "05 15 00",
    "label": "Wire Rope Assemblies",
    "level": 3
  },
  {
    "code": "05 15 13",
    "label": "Aluminum Wire Rope Assemblies",
    "level": 4
  },
  {
    "code": "05 15 16",
    "label": "Steel Wire Rope Assemblies",
    "level": 4
  },
  {
    "code": "05 15 19",
    "label": "Stainless-Steel Wire Rope Assemblies",
    "level": 4
  },
  {
    "code": "05 16 00",
    "label": "Structural Cabling",
    "level": 3
  },
  {
    "code": "05 16 13",
    "label": "Cable Bow Truss Assemblies",
    "level": 4
  },
  {
    "code": "05 16 33",
    "label": "Bridge Cabling",
    "level": 4
  },
  {
    "code": "05 17 00",
    "label": "Structural Rod Assemblies",
    "level": 3
  },
  {
    "code": "05 19 00",
    "label": "Tension Rod and Cable Truss Assemblies",
    "level": 3
  },
  {
    "code": "05 19 13",
    "label": "Façade Support Truss Assemblies",
    "level": 4
  },
  {
    "code": "05 19 19",
    "label": "Canopy Support Truss Assemblies",
    "level": 4
  },
  {
    "code": "05 20 00",
    "label": "Metal Joists",
    "level": 2
  },
  {
    "code": "05 21 00",
    "label": "Steel Joist Framing",
    "level": 3
  },
  {
    "code": "05 21 13",
    "label": "Deep Longspan Steel Joist Framing",
    "level": 4
  },
  {
    "code": "05 21 16",
    "label": "Longspan Steel Joist Framing",
    "level": 4
  },
  {
    "code": "05 21 19",
    "label": "Open Web Steel Joist Framing",
    "level": 4
  },
  {
    "code": "05 21 23",
    "label": "Steel Joist Girder Framing",
    "level": 4
  },
  {
    "code": "05 25 00",
    "label": "Aluminum Joist Framing",
    "level": 3
  },
  {
    "code": "05 30 00",
    "label": "Metal Decking",
    "level": 2
  },
  {
    "code": "05 31 00",
    "label": "Steel Decking",
    "level": 3
  },
  {
    "code": "05 31 13",
    "label": "Steel Floor Decking",
    "level": 4
  },
  {
    "code": "05 31 23",
    "label": "Steel Roof Decking",
    "level": 4
  },
  {
    "code": "05 31 33",
    "label": "Steel Form Decking",
    "level": 4
  },
  {
    "code": "05 33 00",
    "label": "Aluminum Decking",
    "level": 3
  },
  {
    "code": "05 33 13",
    "label": "Aluminum Floor Decking",
    "level": 4
  },
  {
    "code": "05 33 23",
    "label": "Aluminum Roof Decking",
    "level": 4
  },
  {
    "code": "05 34 00",
    "label": "Acoustical Metal Decking",
    "level": 3
  },
  {
    "code": "05 35 00",
    "label": "Raceway Decking Assemblies",
    "level": 3
  },
  {
    "code": "05 36 00",
    "label": "Composite Metal Decking",
    "level": 3
  },
  {
    "code": "05 36 13",
    "label": "Composite Steel Plate and Elastomer Decking",
    "level": 4
  },
  {
    "code": "05 40 00",
    "label": "Cold-Formed Metal Framing",
    "level": 2
  },
  {
    "code": "05 41 00",
    "label": "Structural Metal Stud Framing",
    "level": 3
  },
  {
    "code": "05 42 00",
    "label": "Cold-Formed Metal Joist Framing",
    "level": 3
  },
  {
    "code": "05 42 13",
    "label": "Cold-Formed Metal Floor Joist Framing",
    "level": 4
  },
  {
    "code": "05 42 23",
    "label": "Cold-Formed Metal Roof Joist Framing",
    "level": 4
  },
  {
    "code": "05 43 00",
    "label": "Slotted Channel Framing",
    "level": 3
  },
  {
    "code": "05 44 00",
    "label": "Cold-Formed Metal Trusses",
    "level": 3
  },
  {
    "code": "05 44 13",
    "label": "Cold-Formed Metal Roof Trusses",
    "level": 4
  },
  {
    "code": "05 45 00",
    "label": "Metal Support Assemblies",
    "level": 3
  },
  {
    "code": "05 45 13",
    "label": "Mechanical Metal Supports",
    "level": 4
  },
  {
    "code": "05 45 16",
    "label": "Electrical Metal Supports",
    "level": 4
  },
  {
    "code": "05 45 19",
    "label": "Communications Metal Supports",
    "level": 4
  },
  {
    "code": "05 45 23",
    "label": "Healthcare Metal Supports",
    "level": 4
  },
  {
    "code": "05 50 00",
    "label": "Metal Fabrications",
    "level": 2
  },
  {
    "code": "05 51 00",
    "label": "Metal Stairs",
    "level": 3
  },
  {
    "code": "05 51 13",
    "label": "Metal Pan Stairs",
    "level": 4
  },
  {
    "code": "05 51 16",
    "label": "Metal Floor Plate Stairs",
    "level": 4
  },
  {
    "code": "05 51 17",
    "label": "Alternating Tread Stairs",
    "level": 4
  },
  {
    "code": "05 51 19",
    "label": "Metal Grating Stairs",
    "level": 4
  },
  {
    "code": "05 51 23",
    "label": "Metal Fire Escapes",
    "level": 4
  },
  {
    "code": "05 51 33",
    "label": "Metal Ladders",
    "level": 4
  },
  {
    "code": "05 51 33.13",
    "label": "Vertical Metal Ladders",
    "level": 5
  },
  {
    "code": "05 51 33.16",
    "label": "Inclined Metal Ladders",
    "level": 5
  },
  {
    "code": "05 51 33.23",
    "label": "Alternating Tread Ladders",
    "level": 5
  },
  {
    "code": "05 51 36",
    "label": "Metal Walkways",
    "level": 4
  },
  {
    "code": "05 51 36.13",
    "label": "Metal Catwalks",
    "level": 5
  },
  {
    "code": "05 51 36.16",
    "label": "Metal Ramps",
    "level": 5
  },
  {
    "code": "05 51 36.19",
    "label": "Metal Platforms",
    "level": 5
  },
  {
    "code": "05 52 00",
    "label": "Metal Railings",
    "level": 3
  },
  {
    "code": "05 52 13",
    "label": "Pipe and Tube Railings",
    "level": 4
  },
  {
    "code": "05 53 00",
    "label": "Metal Gratings",
    "level": 3
  },
  {
    "code": "05 53 13",
    "label": "Bar Gratings",
    "level": 4
  },
  {
    "code": "05 53 16",
    "label": "Plank Gratings",
    "level": 4
  },
  {
    "code": "05 53 19",
    "label": "Expanded Metal Gratings",
    "level": 4
  },
  {
    "code": "05 54 00",
    "label": "Metal Floor Plates",
    "level": 3
  },
  {
    "code": "05 55 00",
    "label": "Metal Stair Treads and Nosings",
    "level": 3
  },
  {
    "code": "05 55 13",
    "label": "Metal Stair Treads",
    "level": 4
  },
  {
    "code": "05 55 16",
    "label": "Metal Stair Nosings",
    "level": 4
  },
  {
    "code": "05 56 00",
    "label": "Metal Castings",
    "level": 3
  },
  {
    "code": "05 58 00",
    "label": "Formed Metal Fabrications",
    "level": 3
  },
  {
    "code": "05 58 13",
    "label": "Column Covers",
    "level": 4
  },
  {
    "code": "05 58 16",
    "label": "Formed Metal Enclosures",
    "level": 4
  },
  {
    "code": "05 58 19",
    "label": "Heating/Cooling Unit Covers",
    "level": 4
  },
  {
    "code": "05 58 23",
    "label": "Formed Metal Guards",
    "level": 4
  },
  {
    "code": "05 59 00",
    "label": "Metal Specialties",
    "level": 3
  },
  {
    "code": "05 59 13",
    "label": "Metal Balconies",
    "level": 4
  },
  {
    "code": "05 59 63",
    "label": "Detention Enclosures",
    "level": 4
  },
  {
    "code": "05 70 00",
    "label": "Decorative Metal",
    "level": 2
  },
  {
    "code": "05 71 00",
    "label": "Decorative Metal Stairs",
    "level": 3
  },
  {
    "code": "05 71 13",
    "label": "Fabricated Metal Spiral Stairs",
    "level": 4
  },
  {
    "code": "05 73 00",
    "label": "Decorative Metal Railings",
    "level": 3
  },
  {
    "code": "05 73 13",
    "label": "Glazed Decorative Metal Railings",
    "level": 4
  },
  {
    "code": "05 73 16",
    "label": "Wire Rope Decorative Metal Railings",
    "level": 4
  },
  {
    "code": "05 74 00",
    "label": "Decorative Metal Castings",
    "level": 3
  },
  {
    "code": "05 75 00",
    "label": "Decorative Formed Metal",
    "level": 3
  },
  {
    "code": "05 76 00",
    "label": "Decorative Forged Metal",
    "level": 3
  },
  {
    "code": "05 77 00",
    "label": "Decorative Extruded Metal",
    "level": 3
  },
  {
    "code": "06 00 00",
    "label": "Wood, Plastics, and Composites",
    "level": 1
  },
  {
    "code": "06 01 00",
    "label": "Maintenance of Wood, Plastics, and Composites",
    "level": 3
  },
  {
    "code": "06 01 10",
    "label": "Maintenance of Rough Carpentry",
    "level": 4
  },
  {
    "code": "06 01 10.71",
    "label": "Rough Carpentry Rehabilitation",
    "level": 5
  },
  {
    "code": "06 01 10.91",
    "label": "Rough Carpentry Restoration",
    "level": 5
  },
  {
    "code": "06 01 10.92",
    "label": "Rough Carpentry Preservation",
    "level": 5
  },
  {
    "code": "06 01 20",
    "label": "Maintenance of Finish Carpentry",
    "level": 4
  },
  {
    "code": "06 01 20.71",
    "label": "Finish Carpentry Rehabilitation",
    "level": 5
  },
  {
    "code": "06 01 20.91",
    "label": "Finish Carpentry Restoration",
    "level": 5
  },
  {
    "code": "06 01 20.92",
    "label": "Finish Carpentry Preservation",
    "level": 5
  },
  {
    "code": "06 01 40",
    "label": "Maintenance of Architectural Woodwork",
    "level": 4
  },
  {
    "code": "06 01 40.51",
    "label": "Architectural Woodwork Cleaning",
    "level": 5
  },
  {
    "code": "06 01 40.61",
    "label": "Architectural Woodwork Refinishing",
    "level": 5
  },
  {
    "code": "06 01 40.91",
    "label": "Architectural Woodwork Restoration",
    "level": 5
  },
  {
    "code": "06 01 50",
    "label": "Maintenance of Structural Plastics",
    "level": 4
  },
  {
    "code": "06 01 60",
    "label": "Maintenance of Plastic Fabrications",
    "level": 4
  },
  {
    "code": "06 01 60.51",
    "label": "Plastic Cleaning",
    "level": 5
  },
  {
    "code": "06 01 60.71",
    "label": "Plastic Rehabilitation",
    "level": 5
  },
  {
    "code": "06 01 60.91",
    "label": "Plastic Restoration",
    "level": 5
  },
  {
    "code": "06 01 60.92",
    "label": "Plastic Preservation",
    "level": 5
  },
  {
    "code": "06 01 70",
    "label": "Maintenance of Structural Composites",
    "level": 4
  },
  {
    "code": "06 01 80",
    "label": "Maintenance of Composite Assemblies",
    "level": 4
  },
  {
    "code": "06 01 80.51",
    "label": "Composite Cleaning",
    "level": 5
  },
  {
    "code": "06 01 80.71",
    "label": "Composite Rehabilitation",
    "level": 5
  },
  {
    "code": "06 01 80.91",
    "label": "Composite Restoration",
    "level": 5
  },
  {
    "code": "06 01 80.92",
    "label": "Composite Preservation",
    "level": 5
  },
  {
    "code": "06 03 00",
    "label": "Conservation Treatment for Period Wood",
    "level": 3
  },
  {
    "code": "06 03 01",
    "label": "Maintenance for Period Wood",
    "level": 4
  },
  {
    "code": "06 03 01.31",
    "label": "Period Wood Storage and Protection",
    "level": 5
  },
  {
    "code": "06 03 05",
    "label": "Common Work Results for Period Wood",
    "level": 4
  },
  {
    "code": "06 03 05.73",
    "label": "Long-term Period Wood Treatment",
    "level": 5
  },
  {
    "code": "06 03 05.74",
    "label": "Eradication of Insects in Period Wood",
    "level": 5
  },
  {
    "code": "06 03 05.75",
    "label": "Antiseptic Treatment of Period Wood",
    "level": 5
  },
  {
    "code": "06 03 13",
    "label": "Conservation Treatment of Period Log Construction",
    "level": 4
  },
  {
    "code": "06 03 13.23",
    "label": "Conservation Treatment for Period Heavy Timber",
    "level": 5
  },
  {
    "code": "06 03 20",
    "label": "Conservation Treatment for Period Finish Carpentry",
    "level": 4
  },
  {
    "code": "06 03 20.13",
    "label": "Period Exterior Finish Carpentry",
    "level": 5
  },
  {
    "code": "06 03 20.23",
    "label": "Period Interior Finish Carpentry",
    "level": 5
  },
  {
    "code": "06 03 40",
    "label": "Conservation Treatment for Period Architectural Woodwork",
    "level": 4
  },
  {
    "code": "06 03 40.13",
    "label": "Period Exterior Architectural Woodwork",
    "level": 5
  },
  {
    "code": "06 03 40.23",
    "label": "Period Interior Architectural Woodwork",
    "level": 5
  },
  {
    "code": "06 05 00",
    "label": "Common Work Results for Wood, Plastics, and Composites",
    "level": 3
  },
  {
    "code": "06 05 05",
    "label": "Selective Demolition for Wood, Plastics, and Composites",
    "level": 4
  },
  {
    "code": "06 05 23",
    "label": "Wood, Plastic, and Composite Fastenings",
    "level": 4
  },
  {
    "code": "06 05 73",
    "label": "Wood Treatment",
    "level": 4
  },
  {
    "code": "06 05 73.13",
    "label": "Fire-Retardant Wood Treatment",
    "level": 5
  },
  {
    "code": "06 05 73.33",
    "label": "Preservative Wood Treatment",
    "level": 5
  },
  {
    "code": "06 05 73.91",
    "label": "Long-Term Wood Treatment",
    "level": 5
  },
  {
    "code": "06 05 73.93",
    "label": "Eradication of Insects in Wood",
    "level": 5
  },
  {
    "code": "06 05 73.96",
    "label": "Antiseptic Treatment of Wood",
    "level": 5
  },
  {
    "code": "06 05 83",
    "label": "Shop-Applied Wood Coatings",
    "level": 4
  },
  {
    "code": "06 06 00",
    "label": "Schedules for Wood, Plastics, and Composites",
    "level": 3
  },
  {
    "code": "06 06 10",
    "label": "Schedules for Rough Carpentry",
    "level": 4
  },
  {
    "code": "06 06 10.13",
    "label": "Nailing Schedule",
    "level": 5
  },
  {
    "code": "06 06 10.16",
    "label": "Wood Beam Schedule",
    "level": 5
  },
  {
    "code": "06 06 10.19",
    "label": "Plywood Shear Wall Schedule",
    "level": 5
  },
  {
    "code": "06 06 10.23",
    "label": "Plywood Web Joist Schedule",
    "level": 5
  },
  {
    "code": "06 06 10.26",
    "label": "Wood Truss Schedule",
    "level": 5
  },
  {
    "code": "06 06 20",
    "label": "Schedules for Finish Carpentry",
    "level": 4
  },
  {
    "code": "06 06 40",
    "label": "Schedules for Architectural Woodwork",
    "level": 4
  },
  {
    "code": "06 06 50",
    "label": "Schedules for Structural Plastics",
    "level": 4
  },
  {
    "code": "06 06 60",
    "label": "Schedules for Plastic Fabrications",
    "level": 4
  },
  {
    "code": "06 06 70",
    "label": "Schedules for Structural Composites",
    "level": 4
  },
  {
    "code": "06 06 80",
    "label": "Schedules for Composite Assemblies",
    "level": 4
  },
  {
    "code": "06 08 00",
    "label": "Commissioning of Wood, Plastics, and Composites",
    "level": 3
  },
  {
    "code": "06 10 00",
    "label": "Rough Carpentry",
    "level": 2
  },
  {
    "code": "06 10 53",
    "label": "Miscellaneous Rough Carpentry",
    "level": 4
  },
  {
    "code": "06 10 63",
    "label": "Exterior Rough Carpentry",
    "level": 4
  },
  {
    "code": "06 11 00",
    "label": "Wood Framing",
    "level": 3
  },
  {
    "code": "06 11 13",
    "label": "Engineered Wood Products",
    "level": 4
  },
  {
    "code": "06 11 16",
    "label": "Mechanically Graded Lumber",
    "level": 4
  },
  {
    "code": "06 12 00",
    "label": "Structural Panels",
    "level": 3
  },
  {
    "code": "06 12 13",
    "label": "Cementitious Reinforced Panels",
    "level": 4
  },
  {
    "code": "06 12 16",
    "label": "Stressed Skin Panels",
    "level": 4
  },
  {
    "code": "06 13 00",
    "label": "Heavy Timber Construction",
    "level": 3
  },
  {
    "code": "06 13 13",
    "label": "Log Construction",
    "level": 4
  },
  {
    "code": "06 13 13.91",
    "label": "Period Horizontal Log Work",
    "level": 5
  },
  {
    "code": "06 13 16",
    "label": "Pole Construction",
    "level": 4
  },
  {
    "code": "06 13 23",
    "label": "Heavy Timber Framing",
    "level": 4
  },
  {
    "code": "06 13 26",
    "label": "Heavy Timber Trusses",
    "level": 4
  },
  {
    "code": "06 13 33",
    "label": "Heavy Timber Pier Construction",
    "level": 4
  },
  {
    "code": "06 14 00",
    "label": "Treated Wood Foundations",
    "level": 3
  },
  {
    "code": "06 15 00",
    "label": "Wood Decking",
    "level": 3
  },
  {
    "code": "06 15 13",
    "label": "Wood Floor Decking",
    "level": 4
  },
  {
    "code": "06 15 13.91",
    "label": "Carvel Planking",
    "level": 5
  },
  {
    "code": "06 15 16",
    "label": "Wood Roof Decking",
    "level": 4
  },
  {
    "code": "06 15 19",
    "label": "Timber Decking",
    "level": 4
  },
  {
    "code": "06 15 23",
    "label": "Laminated Wood Decking",
    "level": 4
  },
  {
    "code": "06 15 33",
    "label": "Wood Patio Decking",
    "level": 4
  },
  {
    "code": "06 16 00",
    "label": "Sheathing",
    "level": 3
  },
  {
    "code": "06 16 13",
    "label": "Insulating Sheathing",
    "level": 4
  },
  {
    "code": "06 16 23",
    "label": "Subflooring",
    "level": 4
  },
  {
    "code": "06 16 26",
    "label": "Underlayment",
    "level": 4
  },
  {
    "code": "06 16 33",
    "label": "Wood Board Sheathing",
    "level": 4
  },
  {
    "code": "06 16 36",
    "label": "Wood Panel Product Sheathing",
    "level": 4
  },
  {
    "code": "06 16 43",
    "label": "Gypsum Sheathing",
    "level": 4
  },
  {
    "code": "06 16 53",
    "label": "Moisture-Resistant Sheathing Board",
    "level": 4
  },
  {
    "code": "06 16 63",
    "label": "Cementitious Sheathing",
    "level": 4
  },
  {
    "code": "06 17 00",
    "label": "Shop-Fabricated Structural Wood",
    "level": 3
  },
  {
    "code": "06 17 13",
    "label": "Laminated Veneer Lumber",
    "level": 4
  },
  {
    "code": "06 17 19",
    "label": "Cross-Laminated Timber",
    "level": 4
  },
  {
    "code": "06 17 23",
    "label": "Parallel Strand Lumber",
    "level": 4
  },
  {
    "code": "06 17 33",
    "label": "Wood I-Joists",
    "level": 4
  },
  {
    "code": "06 17 36",
    "label": "Metal-Web Wood Joists",
    "level": 4
  },
  {
    "code": "06 17 43",
    "label": "Rim Boards",
    "level": 4
  },
  {
    "code": "06 17 53",
    "label": "Shop-Fabricated Wood Trusses",
    "level": 4
  },
  {
    "code": "06 18 00",
    "label": "Glued-Laminated Construction",
    "level": 3
  },
  {
    "code": "06 18 13",
    "label": "Glued-Laminated Beams",
    "level": 4
  },
  {
    "code": "06 18 16",
    "label": "Glued-Laminated Columns",
    "level": 4
  },
  {
    "code": "06 20 00",
    "label": "Finish Carpentry",
    "level": 2
  },
  {
    "code": "06 20 13",
    "label": "Exterior Finish Carpentry",
    "level": 4
  },
  {
    "code": "06 20 23",
    "label": "Interior Finish Carpentry",
    "level": 4
  },
  {
    "code": "06 22 00",
    "label": "Millwork",
    "level": 3
  },
  {
    "code": "06 22 13",
    "label": "Standard Pattern Wood Trim",
    "level": 4
  },
  {
    "code": "06 25 00",
    "label": "Prefinished Paneling",
    "level": 3
  },
  {
    "code": "06 25 13",
    "label": "Prefinished Hardboard Paneling",
    "level": 4
  },
  {
    "code": "06 25 16",
    "label": "Prefinished Plywood Paneling",
    "level": 4
  },
  {
    "code": "06 26 00",
    "label": "Board Paneling",
    "level": 3
  },
  {
    "code": "06 26 13",
    "label": "Profile Board Paneling",
    "level": 4
  },
  {
    "code": "06 40 00",
    "label": "Architectural Woodwork",
    "level": 2
  },
  {
    "code": "06 40 13",
    "label": "Exterior Architectural Woodwork",
    "level": 4
  },
  {
    "code": "06 40 23",
    "label": "Interior Architectural Woodwork",
    "level": 4
  },
  {
    "code": "06 41 00",
    "label": "Architectural Wood Casework",
    "level": 3
  },
  {
    "code": "06 41 13",
    "label": "Wood-Veneer-Faced Architectural Cabinets",
    "level": 4
  },
  {
    "code": "06 41 16",
    "label": "Plastic-Laminate-Clad Architectural Cabinets",
    "level": 4
  },
  {
    "code": "06 41 93",
    "label": "Cabinet and Drawer Hardware",
    "level": 4
  },
  {
    "code": "06 42 00",
    "label": "Wood Paneling",
    "level": 3
  },
  {
    "code": "06 42 13",
    "label": "Wood Board Paneling",
    "level": 4
  },
  {
    "code": "06 42 14",
    "label": "Stile and Rail Wood Paneling",
    "level": 4
  },
  {
    "code": "06 42 16",
    "label": "Flush Wood Paneling",
    "level": 4
  },
  {
    "code": "06 42 19",
    "label": "Plastic-Laminate-Faced Wood Paneling",
    "level": 4
  },
  {
    "code": "06 43 00",
    "label": "Wood Stairs and Railings",
    "level": 3
  },
  {
    "code": "06 43 13",
    "label": "Wood Stairs",
    "level": 4
  },
  {
    "code": "06 43 16",
    "label": "Wood Railings",
    "level": 4
  },
  {
    "code": "06 44 00",
    "label": "Ornamental Woodwork",
    "level": 3
  },
  {
    "code": "06 44 13",
    "label": "Wood Turnings",
    "level": 4
  },
  {
    "code": "06 44 16",
    "label": "Wood Pilasters",
    "level": 4
  },
  {
    "code": "06 44 19",
    "label": "Wood Grilles",
    "level": 4
  },
  {
    "code": "06 44 23",
    "label": "Wood Corbels",
    "level": 4
  },
  {
    "code": "06 44 26",
    "label": "Wood Cupolas",
    "level": 4
  },
  {
    "code": "06 44 29",
    "label": "Wood Finials",
    "level": 4
  },
  {
    "code": "06 44 33",
    "label": "Wood Mantels",
    "level": 4
  },
  {
    "code": "06 44 36",
    "label": "Wood Pediment Heads",
    "level": 4
  },
  {
    "code": "06 44 39",
    "label": "Wood Posts and Columns",
    "level": 4
  },
  {
    "code": "06 46 00",
    "label": "Wood Trim",
    "level": 3
  },
  {
    "code": "06 46 13",
    "label": "Wood Door and Window Casings",
    "level": 4
  },
  {
    "code": "06 46 16",
    "label": "Wood Aprons",
    "level": 4
  },
  {
    "code": "06 46 19",
    "label": "Wood Base and Shoe Moldings",
    "level": 4
  },
  {
    "code": "06 46 23",
    "label": "Wood Chair Rails",
    "level": 4
  },
  {
    "code": "06 46 26",
    "label": "Wood Cornices",
    "level": 4
  },
  {
    "code": "06 46 29",
    "label": "Wood Fasciae and Soffits",
    "level": 4
  },
  {
    "code": "06 46 33",
    "label": "Wood Stops, Stools, and Sills",
    "level": 4
  },
  {
    "code": "06 46 91",
    "label": "Splicing of Wooden Components",
    "level": 4
  },
  {
    "code": "06 48 00",
    "label": "Wood Frames",
    "level": 3
  },
  {
    "code": "06 48 13",
    "label": "Exterior Wood Door Frames",
    "level": 4
  },
  {
    "code": "06 48 16",
    "label": "Interior Wood Door Frames",
    "level": 4
  },
  {
    "code": "06 48 19",
    "label": "Ornamental Wood Frames",
    "level": 4
  },
  {
    "code": "06 48 23",
    "label": "Stick-Built Wood Windows",
    "level": 4
  },
  {
    "code": "06 48 26",
    "label": "Wood-Veneer Frames",
    "level": 4
  },
  {
    "code": "06 49 00",
    "label": "Wood Screens and Shutters",
    "level": 3
  },
  {
    "code": "06 49 13",
    "label": "Wood Screens",
    "level": 4
  },
  {
    "code": "06 49 16",
    "label": "Wood Blinds",
    "level": 4
  },
  {
    "code": "06 49 19",
    "label": "Wood Shutters",
    "level": 4
  },
  {
    "code": "06 50 00",
    "label": "Structural Plastics",
    "level": 2
  },
  {
    "code": "06 51 00",
    "label": "Structural Plastic Shapes and Plates",
    "level": 3
  },
  {
    "code": "06 51 13",
    "label": "Plastic Lumber",
    "level": 4
  },
  {
    "code": "06 52 00",
    "label": "Plastic Structural Assemblies",
    "level": 3
  },
  {
    "code": "06 53 00",
    "label": "Plastic Decking",
    "level": 3
  },
  {
    "code": "06 53 13",
    "label": "Solid Plastic Decking",
    "level": 4
  },
  {
    "code": "06 60 00",
    "label": "Plastic Fabrications",
    "level": 2
  },
  {
    "code": "06 61 00",
    "label": "Cast Polymer Fabrications",
    "level": 3
  },
  {
    "code": "06 61 13",
    "label": "Simulated Stone Fabrications",
    "level": 4
  },
  {
    "code": "06 61 16",
    "label": "Solid Surfacing Fabrications",
    "level": 4
  },
  {
    "code": "06 63 00",
    "label": "Plastic Railings",
    "level": 3
  },
  {
    "code": "06 64 00",
    "label": "Plastic Paneling",
    "level": 3
  },
  {
    "code": "06 64 13",
    "label": "Plastic Lattice Paneling",
    "level": 4
  },
  {
    "code": "06 65 00",
    "label": "Plastic Trim",
    "level": 3
  },
  {
    "code": "06 66 00",
    "label": "Custom Ornamental Simulated Woodwork",
    "level": 3
  },
  {
    "code": "06 70 00",
    "label": "Structural Composites",
    "level": 2
  },
  {
    "code": "06 71 00",
    "label": "Structural Composite Shapes and Plates",
    "level": 3
  },
  {
    "code": "06 71 13",
    "label": "Composite Lumber",
    "level": 4
  },
  {
    "code": "06 72 00",
    "label": "Composite Structural Assemblies",
    "level": 3
  },
  {
    "code": "06 72 13",
    "label": "Composite Joist Assemblies",
    "level": 4
  },
  {
    "code": "06 72 23",
    "label": "Composite Stair Assemblies",
    "level": 4
  },
  {
    "code": "06 73 00",
    "label": "Composite Decking",
    "level": 3
  },
  {
    "code": "06 73 13",
    "label": "Composite Structural Decking",
    "level": 4
  },
  {
    "code": "06 74 00",
    "label": "Composite Gratings",
    "level": 3
  },
  {
    "code": "06 74 13",
    "label": "Fiberglass Reinforced Gratings",
    "level": 4
  },
  {
    "code": "06 80 00",
    "label": "Composite Fabrications",
    "level": 2
  },
  {
    "code": "06 81 00",
    "label": "Composite Railings",
    "level": 3
  },
  {
    "code": "06 81 13",
    "label": "Glass-Fiber-Reinforced Plastic Railings",
    "level": 4
  },
  {
    "code": "06 82 00",
    "label": "Composite Trim",
    "level": 3
  },
  {
    "code": "06 83 00",
    "label": "Composite Paneling",
    "level": 3
  },
  {
    "code": "06 83 13",
    "label": "Resin Composite Paneling",
    "level": 4
  },
  {
    "code": "06 83 16",
    "label": "Fiberglass Reinforced Paneling",
    "level": 4
  },
  {
    "code": "07 00 00",
    "label": "Thermal and Moisture Protection",
    "level": 1
  },
  {
    "code": "07 01 00",
    "label": "Operation and Maintenance of Thermal and Moisture Protection",
    "level": 3
  },
  {
    "code": "07 01 10",
    "label": "Maintenance of Dampproofing and Waterproofing",
    "level": 4
  },
  {
    "code": "07 01 10.81",
    "label": "Waterproofing Replacement",
    "level": 5
  },
  {
    "code": "07 01 20",
    "label": "Maintenance of Thermal Protection",
    "level": 4
  },
  {
    "code": "07 01 30",
    "label": "Maintenance of Steep Slope Roofing",
    "level": 4
  },
  {
    "code": "07 01 40",
    "label": "Maintenance of Roofing and Siding Panels",
    "level": 4
  },
  {
    "code": "07 01 50",
    "label": "Maintenance of Membrane Roofing",
    "level": 4
  },
  {
    "code": "07 01 50.13",
    "label": "Roof Moisture Survey",
    "level": 5
  },
  {
    "code": "07 01 50.16",
    "label": "Roof Maintenance Program",
    "level": 5
  },
  {
    "code": "07 01 50.19",
    "label": "Preparation for Re-Roofing",
    "level": 5
  },
  {
    "code": "07 01 50.23",
    "label": "Roof Removal",
    "level": 5
  },
  {
    "code": "07 01 50.61",
    "label": "Roof Re-Coating",
    "level": 5
  },
  {
    "code": "07 01 50.81",
    "label": "Roof Replacement",
    "level": 5
  },
  {
    "code": "07 01 50.91",
    "label": "Roofing Restoration",
    "level": 5
  },
  {
    "code": "07 01 60",
    "label": "Maintenance of Flashing and Sheet Metal",
    "level": 4
  },
  {
    "code": "07 01 60.71",
    "label": "Flashing and Sheet Metal Rehabilitation",
    "level": 5
  },
  {
    "code": "07 01 60.91",
    "label": "Flashing and Sheet Metal Restoration",
    "level": 5
  },
  {
    "code": "07 01 60.92",
    "label": "Flashing and Sheet Metal Preservation",
    "level": 5
  },
  {
    "code": "07 01 70",
    "label": "Operation and Maintenance of Roof Specialties and Accessories",
    "level": 4
  },
  {
    "code": "07 01 80",
    "label": "Maintenance of Fire and Smoke Protection",
    "level": 4
  },
  {
    "code": "07 01 90",
    "label": "Maintenance of Joint Protection",
    "level": 4
  },
  {
    "code": "07 01 90.71",
    "label": "Joint Sealant Rehabilitation",
    "level": 5
  },
  {
    "code": "07 01 90.81",
    "label": "Joint Sealant Replacement",
    "level": 5
  },
  {
    "code": "07 03 00",
    "label": "Conservation Treatment for Period Roofing",
    "level": 3
  },
  {
    "code": "07 03 30",
    "label": "Conservation Treatment for Period Steep Slope Roofing",
    "level": 4
  },
  {
    "code": "07 03 30.13",
    "label": "Conservation Treatment for Period Canvas Roofing",
    "level": 5
  },
  {
    "code": "07 03 30.16",
    "label": "Conservation Treatment for Period Board Roofing",
    "level": 5
  },
  {
    "code": "07 03 31",
    "label": "Conservation Treatment for Period Shingles and Shakes",
    "level": 4
  },
  {
    "code": "07 03 31.16",
    "label": "Conservation Treatment for Period Metal Shingles",
    "level": 5
  },
  {
    "code": "07 03 31.26",
    "label": "Conservation Treatment for Period Slate Shingles",
    "level": 5
  },
  {
    "code": "07 03 31.29",
    "label": "Conservation Treatment for Period Wood Shingles and Shakes",
    "level": 5
  },
  {
    "code": "07 03 32",
    "label": "Conservation Treatment for Period Roof Tiles",
    "level": 4
  },
  {
    "code": "07 03 32.13",
    "label": "Conservation Treatment for Period Clay Roof Tiles",
    "level": 5
  },
  {
    "code": "07 03 32.16",
    "label": "Conservation Treatment for Period Concrete Roof Tiles",
    "level": 5
  },
  {
    "code": "07 03 32.19",
    "label": "Conservation Treatment for Period Metal Roof Tiles",
    "level": 5
  },
  {
    "code": "07 03 33",
    "label": "Conservation Treatment for Period Natural Roof Coverings",
    "level": 4
  },
  {
    "code": "07 03 33.13",
    "label": "Conservation Treatment for Period Sod Roofing",
    "level": 5
  },
  {
    "code": "07 03 40",
    "label": "Conservation Treatment for Period Roofing and Siding Panels",
    "level": 4
  },
  {
    "code": "07 03 41",
    "label": "Conservative Treatment for Period Roof Panels",
    "level": 4
  },
  {
    "code": "07 03 41.13",
    "label": "Conservation Treatment for Period Metal Roof Panels",
    "level": 5
  },
  {
    "code": "07 03 41.23",
    "label": "Conservation Treatment for Period Wood Roof Panels",
    "level": 5
  },
  {
    "code": "07 03 46",
    "label": "Conservation Treatment for Period Wood Siding",
    "level": 4
  },
  {
    "code": "07 03 60",
    "label": "Conservation Treatment of Period Flashing and Sheet Metal",
    "level": 4
  },
  {
    "code": "07 03 61",
    "label": "Conservation Treatment for Period Sheet Metal Roofing",
    "level": 4
  },
  {
    "code": "07 03 61.13",
    "label": "Conservation Treatment for Period Standing Seam Sheet Metal Roofing",
    "level": 5
  },
  {
    "code": "07 03 61.16",
    "label": "Conservation Treatment for Period Batten Seam Sheet Metal Roofing",
    "level": 5
  },
  {
    "code": "07 03 61.19",
    "label": "Conservation Treatment for Period Flat Seam Sheet Metal Roofing",
    "level": 5
  },
  {
    "code": "07 05 00",
    "label": "Common Work Results for Thermal and Moisture Protection",
    "level": 3
  },
  {
    "code": "07 05 05",
    "label": "Selective Demolition for Thermal and Moisture Protection",
    "level": 4
  },
  {
    "code": "07 05 43",
    "label": "Cladding Support Systems",
    "level": 4
  },
  {
    "code": "07 05 53",
    "label": "Fire and Smoke Assembly Identification",
    "level": 4
  },
  {
    "code": "07 06 00",
    "label": "Schedules for Thermal and Moisture Protection",
    "level": 3
  },
  {
    "code": "07 06 10",
    "label": "Schedules for Dampproofing and Waterproofing",
    "level": 4
  },
  {
    "code": "07 06 20",
    "label": "Schedules for Thermal Protection",
    "level": 4
  },
  {
    "code": "07 06 30",
    "label": "Schedules for Steep Slope Roofing",
    "level": 4
  },
  {
    "code": "07 06 40",
    "label": "Schedules for Roofing and Siding Panels",
    "level": 4
  },
  {
    "code": "07 06 50",
    "label": "Schedules for Membrane Roofing",
    "level": 4
  },
  {
    "code": "07 06 60",
    "label": "Schedules for Flashing and Sheet Metal",
    "level": 4
  },
  {
    "code": "07 06 70",
    "label": "Schedules for Roof Specialties and Accessories",
    "level": 4
  },
  {
    "code": "07 06 80",
    "label": "Schedules for Fire and Smoke Protection",
    "level": 4
  },
  {
    "code": "07 06 80.13",
    "label": "Fireproofing Schedule",
    "level": 5
  },
  {
    "code": "07 06 80.16",
    "label": "Firestopping Schedule",
    "level": 5
  },
  {
    "code": "07 06 90",
    "label": "Schedules for Joint Protection",
    "level": 4
  },
  {
    "code": "07 06 90.13",
    "label": "Joint Sealant Schedule",
    "level": 5
  },
  {
    "code": "07 08 00",
    "label": "Commissioning of Thermal and Moisture Protection",
    "level": 3
  },
  {
    "code": "07 10 00",
    "label": "Dampproofing and Waterproofing",
    "level": 2
  },
  {
    "code": "07 11 00",
    "label": "Dampproofing",
    "level": 3
  },
  {
    "code": "07 11 13",
    "label": "Bituminous Dampproofing",
    "level": 4
  },
  {
    "code": "07 11 16",
    "label": "Cementitious Dampproofing",
    "level": 4
  },
  {
    "code": "07 11 19",
    "label": "Sheet Dampproofing",
    "level": 4
  },
  {
    "code": "07 12 00",
    "label": "Built-Up Bituminous Waterproofing",
    "level": 3
  },
  {
    "code": "07 12 13",
    "label": "Built-Up Asphalt Waterproofing",
    "level": 4
  },
  {
    "code": "07 12 16",
    "label": "Built-Up Coal Tar Waterproofing",
    "level": 4
  },
  {
    "code": "07 13 00",
    "label": "Sheet Waterproofing",
    "level": 3
  },
  {
    "code": "07 13 13",
    "label": "Bituminous Sheet Waterproofing",
    "level": 4
  },
  {
    "code": "07 13 26",
    "label": "Self-Adhering Sheet Waterproofing",
    "level": 4
  },
  {
    "code": "07 13 52",
    "label": "Modified Bituminous Sheet Waterproofing",
    "level": 4
  },
  {
    "code": "07 13 53",
    "label": "Elastomeric Sheet Waterproofing",
    "level": 4
  },
  {
    "code": "07 13 54",
    "label": "Thermoplastic Sheet Waterproofing",
    "level": 4
  },
  {
    "code": "07 14 00",
    "label": "Fluid-Applied Waterproofing",
    "level": 3
  },
  {
    "code": "07 14 13",
    "label": "Hot Fluid-Applied Rubberized Asphalt Waterproofing",
    "level": 4
  },
  {
    "code": "07 14 14",
    "label": "Hot Fluid-Applied Polyurea Waterproofing",
    "level": 4
  },
  {
    "code": "07 14 16",
    "label": "Cold Fluid-Applied Waterproofing",
    "level": 4
  },
  {
    "code": "07 15 00",
    "label": "Sheet Metal Waterproofing",
    "level": 3
  },
  {
    "code": "07 15 13",
    "label": "Sheet Lead Waterproofing",
    "level": 4
  },
  {
    "code": "07 16 00",
    "label": "Cementitious and Reactive Waterproofing",
    "level": 3
  },
  {
    "code": "07 16 13",
    "label": "Polymer Modified Cement Waterproofing",
    "level": 4
  },
  {
    "code": "07 16 16",
    "label": "Crystalline Waterproofing",
    "level": 4
  },
  {
    "code": "07 16 19",
    "label": "Metal Oxide Waterproofing",
    "level": 4
  },
  {
    "code": "07 17 00",
    "label": "Bentonite Waterproofing",
    "level": 3
  },
  {
    "code": "07 17 13",
    "label": "Bentonite Panel Waterproofing",
    "level": 4
  },
  {
    "code": "07 17 16",
    "label": "Bentonite Composite Sheet Waterproofing",
    "level": 4
  },
  {
    "code": "07 18 00",
    "label": "Traffic Coatings",
    "level": 3
  },
  {
    "code": "07 18 13",
    "label": "Pedestrian Traffic Coatings",
    "level": 4
  },
  {
    "code": "07 18 16",
    "label": "Vehicular Traffic Coatings",
    "level": 4
  },
  {
    "code": "07 19 00",
    "label": "Water Repellents",
    "level": 3
  },
  {
    "code": "07 19 13",
    "label": "Acrylic Water Repellents",
    "level": 4
  },
  {
    "code": "07 19 16",
    "label": "Silane Water Repellents",
    "level": 4
  },
  {
    "code": "07 19 19",
    "label": "Silicone Water Repellents",
    "level": 4
  },
  {
    "code": "07 19 23",
    "label": "Siloxane Water Repellents",
    "level": 4
  },
  {
    "code": "07 19 26",
    "label": "Stearate Water Repellents",
    "level": 4
  },
  {
    "code": "07 19 29",
    "label": "Penetrating Polyester Water Repellents",
    "level": 4
  },
  {
    "code": "07 20 00",
    "label": "Thermal Protection",
    "level": 2
  },
  {
    "code": "07 21 00",
    "label": "Thermal Insulation",
    "level": 3
  },
  {
    "code": "07 21 13",
    "label": "Board Insulation",
    "level": 4
  },
  {
    "code": "07 21 13.13",
    "label": "Foam Board Insulation",
    "level": 5
  },
  {
    "code": "07 21 13.16",
    "label": "Fibrous Board Insulation",
    "level": 5
  },
  {
    "code": "07 21 13.19",
    "label": "Mineral Board Insulation",
    "level": 5
  },
  {
    "code": "07 21 16",
    "label": "Blanket Insulation",
    "level": 4
  },
  {
    "code": "07 21 19",
    "label": "Foamed-In-Place Insulation",
    "level": 4
  },
  {
    "code": "07 21 23",
    "label": "Loose-Fill Insulation",
    "level": 4
  },
  {
    "code": "07 21 26",
    "label": "Blown Insulation",
    "level": 4
  },
  {
    "code": "07 21 29",
    "label": "Sprayed Insulation",
    "level": 4
  },
  {
    "code": "07 21 53",
    "label": "Reflective Insulation",
    "level": 4
  },
  {
    "code": "07 22 00",
    "label": "Roof and Deck Insulation",
    "level": 3
  },
  {
    "code": "07 22 13",
    "label": "Asphaltic Perlite Concrete Deck",
    "level": 4
  },
  {
    "code": "07 22 16",
    "label": "Roof Board Insulation",
    "level": 4
  },
  {
    "code": "07 24 00",
    "label": "Exterior Insulation and Finish Systems",
    "level": 3
  },
  {
    "code": "07 24 13",
    "label": "Polymer-Based Exterior Insulation and Finish System",
    "level": 4
  },
  {
    "code": "07 24 16",
    "label": "Polymer-Modified Exterior Insulation and Finish System",
    "level": 4
  },
  {
    "code": "07 24 19",
    "label": "Water-Drainage Exterior Insulation and Finish System",
    "level": 4
  },
  {
    "code": "07 24 23",
    "label": "Direct-Applied Finish Systems",
    "level": 4
  },
  {
    "code": "07 25 00",
    "label": "Weather Barriers",
    "level": 3
  },
  {
    "code": "07 26 00",
    "label": "Vapor Retarders",
    "level": 3
  },
  {
    "code": "07 26 13",
    "label": "Above-Grade Vapor Retarders",
    "level": 4
  },
  {
    "code": "07 26 16",
    "label": "Below-Grade Vapor Retarders",
    "level": 4
  },
  {
    "code": "07 26 23",
    "label": "Below-Grade Gas Retarders",
    "level": 4
  },
  {
    "code": "07 27 00",
    "label": "Air Barriers",
    "level": 3
  },
  {
    "code": "07 27 13",
    "label": "Modified Bituminous Sheet Air Barriers",
    "level": 4
  },
  {
    "code": "07 27 16",
    "label": "Sheet Metal Membrane Air Barriers",
    "level": 4
  },
  {
    "code": "07 27 19",
    "label": "Plastic Sheet Air Barriers",
    "level": 4
  },
  {
    "code": "07 27 23",
    "label": "Board Product Air Barriers",
    "level": 4
  },
  {
    "code": "07 27 26",
    "label": "Fluid-Applied Membrane Air Barriers",
    "level": 4
  },
  {
    "code": "07 27 36",
    "label": "Sprayed Foam Air Barrier",
    "level": 4
  },
  {
    "code": "07 30 00",
    "label": "Steep Slope Roofing",
    "level": 2
  },
  {
    "code": "07 30 91",
    "label": "Canvas Roofing",
    "level": 4
  },
  {
    "code": "07 31 00",
    "label": "Shingles and Shakes",
    "level": 3
  },
  {
    "code": "07 31 13",
    "label": "Asphalt Shingles",
    "level": 4
  },
  {
    "code": "07 31 13.13",
    "label": "Fiberglass-Reinforced Asphalt Shingles",
    "level": 5
  },
  {
    "code": "07 31 16",
    "label": "Metal Shingles",
    "level": 4
  },
  {
    "code": "07 31 19",
    "label": "Mineral-Fiber Cement Shingles",
    "level": 4
  },
  {
    "code": "07 31 23",
    "label": "Porcelain Enamel Shingles",
    "level": 4
  },
  {
    "code": "07 31 26",
    "label": "Slate Shingles",
    "level": 4
  },
  {
    "code": "07 31 29",
    "label": "Wood Shingles and Shakes",
    "level": 4
  },
  {
    "code": "07 31 29.13",
    "label": "Wood Shingles",
    "level": 5
  },
  {
    "code": "07 31 29.16",
    "label": "Wood Shakes",
    "level": 5
  },
  {
    "code": "07 31 33",
    "label": "Composite Rubber Shingles",
    "level": 4
  },
  {
    "code": "07 31 53",
    "label": "Plastic Shakes",
    "level": 4
  },
  {
    "code": "07 32 00",
    "label": "Roof Tiles",
    "level": 3
  },
  {
    "code": "07 32 13",
    "label": "Clay Roof Tiles",
    "level": 4
  },
  {
    "code": "07 32 14",
    "label": "Ceramic and Porcelain Roof Tiles",
    "level": 4
  },
  {
    "code": "07 32 16",
    "label": "Concrete Roof Tiles",
    "level": 4
  },
  {
    "code": "07 32 19",
    "label": "Metal Roof Tiles",
    "level": 4
  },
  {
    "code": "07 32 23",
    "label": "Mineral-Fiber Cement Roof Tiles",
    "level": 4
  },
  {
    "code": "07 32 26",
    "label": "Plastic Roof Tiles",
    "level": 4
  },
  {
    "code": "07 32 29",
    "label": "Rubber Tiles/Panels",
    "level": 4
  },
  {
    "code": "07 33 00",
    "label": "Natural Roof Coverings",
    "level": 3
  },
  {
    "code": "07 33 13",
    "label": "Sod Roofing",
    "level": 4
  },
  {
    "code": "07 33 16",
    "label": "Thatched Roofing",
    "level": 4
  },
  {
    "code": "07 33 63",
    "label": "Vegetated Steep-Slope Roofing",
    "level": 4
  },
  {
    "code": "07 40 00",
    "label": "Roofing and Siding Panels",
    "level": 2
  },
  {
    "code": "07 41 00",
    "label": "Roof Panels",
    "level": 3
  },
  {
    "code": "07 41 13",
    "label": "Metal Roof Panels",
    "level": 4
  },
  {
    "code": "07 41 16",
    "label": "Insulated Metal Roof Panels",
    "level": 4
  },
  {
    "code": "07 41 23",
    "label": "Wood Roof Panels",
    "level": 4
  },
  {
    "code": "07 41 33",
    "label": "Plastic Roof Panels",
    "level": 4
  },
  {
    "code": "07 41 43",
    "label": "Composite Roof Panels",
    "level": 4
  },
  {
    "code": "07 41 63",
    "label": "Fabricated Roof Panel Assemblies",
    "level": 4
  },
  {
    "code": "07 42 00",
    "label": "Wall Panels",
    "level": 3
  },
  {
    "code": "07 42 13",
    "label": "Metal Wall Panels",
    "level": 4
  },
  {
    "code": "07 42 13.13",
    "label": "Formed Metal Wall Panels",
    "level": 5
  },
  {
    "code": "07 42 13.16",
    "label": "Metal Plate Wall Panels",
    "level": 5
  },
  {
    "code": "07 42 13.19",
    "label": "Insulated Metal Wall Panels",
    "level": 5
  },
  {
    "code": "07 42 13.23",
    "label": "Metal Composite Material Wall Panels",
    "level": 5
  },
  {
    "code": "07 42 23",
    "label": "Wood Wall Panels",
    "level": 4
  },
  {
    "code": "07 42 26",
    "label": "Tile Wall Panels",
    "level": 4
  },
  {
    "code": "07 42 29",
    "label": "Terra Cotta Wall Panels",
    "level": 4
  },
  {
    "code": "07 42 33",
    "label": "Plastic Wall Panels",
    "level": 4
  },
  {
    "code": "07 42 43",
    "label": "Composite Wall Panels",
    "level": 4
  },
  {
    "code": "07 42 46",
    "label": "Cementitious Wall Panels",
    "level": 4
  },
  {
    "code": "07 42 63",
    "label": "Fabricated Wall Panel Assemblies",
    "level": 4
  },
  {
    "code": "07 42 93",
    "label": "Soffit Panels",
    "level": 4
  },
  {
    "code": "07 44 00",
    "label": "Faced Panels",
    "level": 3
  },
  {
    "code": "07 44 13",
    "label": "Aggregate Coated Panels",
    "level": 4
  },
  {
    "code": "07 44 16",
    "label": "Porcelain Enameled Faced Panels",
    "level": 4
  },
  {
    "code": "07 44 19",
    "label": "Tile-Faced Panels",
    "level": 4
  },
  {
    "code": "07 44 23",
    "label": "Ceramic-Tile-Faced Panels",
    "level": 4
  },
  {
    "code": "07 44 33",
    "label": "Metal Faced Panels",
    "level": 4
  },
  {
    "code": "07 44 53",
    "label": "Glass-Fiber-Reinforced Cementitious Panels",
    "level": 4
  },
  {
    "code": "07 44 56",
    "label": "Mineral-Fiber-Reinforced Cementitious Panels",
    "level": 4
  },
  {
    "code": "07 44 63",
    "label": "Fabricated Faced Panel Assemblies",
    "level": 4
  },
  {
    "code": "07 46 00",
    "label": "Siding",
    "level": 3
  },
  {
    "code": "07 46 16",
    "label": "Aluminum Siding",
    "level": 4
  },
  {
    "code": "07 46 19",
    "label": "Steel Siding",
    "level": 4
  },
  {
    "code": "07 46 21",
    "label": "Zinc Siding",
    "level": 4
  },
  {
    "code": "07 46 23",
    "label": "Wood Siding",
    "level": 4
  },
  {
    "code": "07 46 24",
    "label": "Wood Shingle and Shake Siding",
    "level": 4
  },
  {
    "code": "07 46 24.13",
    "label": "Wood Shingle Siding",
    "level": 5
  },
  {
    "code": "07 46 24.16",
    "label": "Wood Shake Siding",
    "level": 5
  },
  {
    "code": "07 46 26",
    "label": "Hardboard Siding",
    "level": 4
  },
  {
    "code": "07 46 29",
    "label": "Plywood Siding",
    "level": 4
  },
  {
    "code": "07 46 33",
    "label": "Plastic Siding",
    "level": 4
  },
  {
    "code": "07 46 43",
    "label": "Composition Siding",
    "level": 4
  },
  {
    "code": "07 46 46",
    "label": "Fiber-Cement Siding",
    "level": 4
  },
  {
    "code": "07 46 63",
    "label": "Fabricated Panel Assemblies with Siding",
    "level": 4
  },
  {
    "code": "07 50 00",
    "label": "Membrane Roofing",
    "level": 2
  },
  {
    "code": "07 51 00",
    "label": "Built-Up Bituminous Roofing",
    "level": 3
  },
  {
    "code": "07 51 13",
    "label": "Built-Up Asphalt Roofing",
    "level": 4
  },
  {
    "code": "07 51 13.13",
    "label": "Cold-Applied Built-Up Asphalt Roofing",
    "level": 5
  },
  {
    "code": "07 51 16",
    "label": "Built-Up Coal Tar Roofing",
    "level": 4
  },
  {
    "code": "07 51 23",
    "label": "Glass-Fiber-Reinforced Asphalt Emulsion Roofing",
    "level": 4
  },
  {
    "code": "07 52 00",
    "label": "Modified Bituminous Membrane Roofing",
    "level": 3
  },
  {
    "code": "07 52 13",
    "label": "Atactic-Polypropylene-Modified Bituminous Membrane Roofing",
    "level": 4
  },
  {
    "code": "07 52 13.11",
    "label": "Cold Adhesive Applied Atactic-Polypropylene-Modified Bituminous Membrane Roofing",
    "level": 5
  },
  {
    "code": "07 52 13.13",
    "label": "Torch-Applied Atactic-Polypropylene-Modified Bituminous Membrane Roofing",
    "level": 5
  },
  {
    "code": "07 52 13.14",
    "label": "Mechanically Fastened Atactic-Polypropylene-Modified Bituminous Membrane Roofing",
    "level": 5
  },
  {
    "code": "07 52 16",
    "label": "Styrene-Butadiene-Styrene Modified Bituminous Membrane Roofing",
    "level": 4
  },
  {
    "code": "07 52 16.11",
    "label": "Cold Adhesive Styrene-Butadiene-Styrene Modified Bituminous Membrane Roofing",
    "level": 5
  },
  {
    "code": "07 52 16.12",
    "label": "Hot-Mopped Styrene-Butadiene-Styrene Modified Bituminous Membrane Roofing",
    "level": 5
  },
  {
    "code": "07 52 16.13",
    "label": "Torch-Applied Styrene-Butadiene-Styrene Modified Bituminous Membrane Roofing",
    "level": 5
  },
  {
    "code": "07 52 16.14",
    "label": "Mechanically Fastened Styrene-Butadiene-Styrene Modified Bituminous Membrane Roofing",
    "level": 5
  },
  {
    "code": "07 53 00",
    "label": "Elastomeric Membrane Roofing",
    "level": 3
  },
  {
    "code": "07 53 13",
    "label": "Chlorinated-Polyethylene Roofing",
    "level": 4
  },
  {
    "code": "07 53 16",
    "label": "Chlorosulfonate-Polyethylene Roofing",
    "level": 4
  },
  {
    "code": "07 53 23",
    "label": "Ethylene-Propylene-Diene-Monomer Roofing",
    "level": 4
  },
  {
    "code": "07 53 29",
    "label": "Polyisobutylene Roofing",
    "level": 4
  },
  {
    "code": "07 54 00",
    "label": "Thermoplastic Membrane Roofing",
    "level": 3
  },
  {
    "code": "07 54 13",
    "label": "Copolymer-Alloy Roofing",
    "level": 4
  },
  {
    "code": "07 54 16",
    "label": "Ketone Ethylene Ester Roofing",
    "level": 4
  },
  {
    "code": "07 54 19",
    "label": "Polyvinyl-Chloride Roofing",
    "level": 4
  },
  {
    "code": "07 54 23",
    "label": "Thermoplastic-Polyolefin Roofing",
    "level": 4
  },
  {
    "code": "07 54 26",
    "label": "Nitrile-Butadiene-Polymer Roofing",
    "level": 4
  },
  {
    "code": "07 55 00",
    "label": "Protected Membrane Roofing",
    "level": 3
  },
  {
    "code": "07 55 51",
    "label": "Built-Up Bituminous Protected Membrane Roofing",
    "level": 4
  },
  {
    "code": "07 55 52",
    "label": "Modified Bituminous Protected Membrane Roofing",
    "level": 4
  },
  {
    "code": "07 55 53",
    "label": "Elastomeric Protected Membrane Roofing",
    "level": 4
  },
  {
    "code": "07 55 54",
    "label": "Thermoplastic Protected Membrane Roofing",
    "level": 4
  },
  {
    "code": "07 55 56",
    "label": "Fluid-Applied Protected Membrane Roofing",
    "level": 4
  },
  {
    "code": "07 55 56.13",
    "label": "Hot-Applied Rubberized Asphalt Protected Membrane Roofing",
    "level": 5
  },
  {
    "code": "07 55 63",
    "label": "Vegetated Protected Membrane Roofing",
    "level": 4
  },
  {
    "code": "07 56 00",
    "label": "Fluid-Applied Roofing",
    "level": 3
  },
  {
    "code": "07 57 00",
    "label": "Coated Foamed Roofing",
    "level": 3
  },
  {
    "code": "07 57 13",
    "label": "Sprayed Polyurethane Foam Roofing",
    "level": 4
  },
  {
    "code": "07 58 00",
    "label": "Roll Roofing",
    "level": 3
  },
  {
    "code": "07 60 00",
    "label": "Flashing and Sheet Metal",
    "level": 2
  },
  {
    "code": "07 61 00",
    "label": "Sheet Metal Roofing",
    "level": 3
  },
  {
    "code": "07 61 13",
    "label": "Standing Seam Sheet Metal Roofing",
    "level": 4
  },
  {
    "code": "07 61 16",
    "label": "Batten Seam Sheet Metal Roofing",
    "level": 4
  },
  {
    "code": "07 61 19",
    "label": "Flat Seam Sheet Metal Roofing",
    "level": 4
  },
  {
    "code": "07 62 00",
    "label": "Sheet Metal Flashing and Trim",
    "level": 3
  },
  {
    "code": "07 63 00",
    "label": "Sheet Metal Roofing Specialties",
    "level": 3
  },
  {
    "code": "07 64 00",
    "label": "Sheet Metal Wall Cladding",
    "level": 3
  },
  {
    "code": "07 64 13",
    "label": "Standing Seam Sheet Metal Wall Cladding",
    "level": 4
  },
  {
    "code": "07 64 16",
    "label": "Batten Seam Sheet Metal Wall Cladding",
    "level": 4
  },
  {
    "code": "07 64 19",
    "label": "Flat Seam Sheet Metal Wall Cladding",
    "level": 4
  },
  {
    "code": "07 65 00",
    "label": "Flexible Flashing",
    "level": 3
  },
  {
    "code": "07 65 13",
    "label": "Laminated Sheet Flashing",
    "level": 4
  },
  {
    "code": "07 65 16",
    "label": "Modified Bituminous Sheet Flashing",
    "level": 4
  },
  {
    "code": "07 65 19",
    "label": "Plastic Sheet Flashing",
    "level": 4
  },
  {
    "code": "07 65 23",
    "label": "Rubber Sheet Flashing",
    "level": 4
  },
  {
    "code": "07 65 26",
    "label": "Self-Adhering Sheet Flashing",
    "level": 4
  },
  {
    "code": "07 70 00",
    "label": "Roof and Wall Specialties and Accessories",
    "level": 2
  },
  {
    "code": "07 71 00",
    "label": "Roof Specialties",
    "level": 3
  },
  {
    "code": "07 71 13",
    "label": "Manufactured Copings",
    "level": 4
  },
  {
    "code": "07 71 16",
    "label": "Manufactured Counterflashing Systems",
    "level": 4
  },
  {
    "code": "07 71 19",
    "label": "Manufactured Gravel Stops and Fasciae",
    "level": 4
  },
  {
    "code": "07 71 23",
    "label": "Manufactured Gutters and Downspouts",
    "level": 4
  },
  {
    "code": "07 71 23.13",
    "label": "Gutter Debris Guards",
    "level": 5
  },
  {
    "code": "07 71 26",
    "label": "Reglets",
    "level": 4
  },
  {
    "code": "07 71 29",
    "label": "Manufactured Roof Expansion Joints",
    "level": 4
  },
  {
    "code": "07 71 33",
    "label": "Manufactured Scuppers",
    "level": 4
  },
  {
    "code": "07 72 00",
    "label": "Roof Accessories",
    "level": 3
  },
  {
    "code": "07 72 13",
    "label": "Manufactured Curbs",
    "level": 4
  },
  {
    "code": "07 72 23",
    "label": "Relief Vents",
    "level": 4
  },
  {
    "code": "07 72 26",
    "label": "Ridge Vents",
    "level": 4
  },
  {
    "code": "07 72 33",
    "label": "Roof Hatches",
    "level": 4
  },
  {
    "code": "07 72 36",
    "label": "Smoke Vents",
    "level": 4
  },
  {
    "code": "07 72 39",
    "label": "Operable Roof Vents",
    "level": 4
  },
  {
    "code": "07 72 43",
    "label": "Roof Walk Boards",
    "level": 4
  },
  {
    "code": "07 72 46",
    "label": "Roof Walkways",
    "level": 4
  },
  {
    "code": "07 72 53",
    "label": "Snow Guards",
    "level": 4
  },
  {
    "code": "07 72 63",
    "label": "Waste Containment Assemblies",
    "level": 4
  },
  {
    "code": "07 72 73",
    "label": "Vegetated Roof Systems",
    "level": 4
  },
  {
    "code": "07 76 00",
    "label": "Roof Pavers",
    "level": 3
  },
  {
    "code": "07 76 13",
    "label": "Roof Ballast Pavers",
    "level": 4
  },
  {
    "code": "07 76 16",
    "label": "Roof Decking Pavers",
    "level": 4
  },
  {
    "code": "07 77 00",
    "label": "Wall Specialties",
    "level": 3
  },
  {
    "code": "07 80 00",
    "label": "Fire and Smoke Protection",
    "level": 2
  },
  {
    "code": "07 81 00",
    "label": "Applied Fireproofing",
    "level": 3
  },
  {
    "code": "07 81 13",
    "label": "Cement Aggregate Fireproofing",
    "level": 4
  },
  {
    "code": "07 81 16",
    "label": "Cementitious Fireproofing",
    "level": 4
  },
  {
    "code": "07 81 19",
    "label": "Foamed Magnesium-Oxychloride Fireproofing",
    "level": 4
  },
  {
    "code": "07 81 23",
    "label": "Intumescent Fireproofing",
    "level": 4
  },
  {
    "code": "07 81 26",
    "label": "Magnesium Cement Fireproofing",
    "level": 4
  },
  {
    "code": "07 81 29",
    "label": "Mineral-Fiber Cementitious Fireproofing",
    "level": 4
  },
  {
    "code": "07 81 33",
    "label": "Mineral-Fiber Fireproofing",
    "level": 4
  },
  {
    "code": "07 82 00",
    "label": "Board Fireproofing",
    "level": 3
  },
  {
    "code": "07 82 13",
    "label": "Calcium-Silicate Board Fireproofing",
    "level": 4
  },
  {
    "code": "07 82 16",
    "label": "Slag-Fiber Board Fireproofing",
    "level": 4
  },
  {
    "code": "07 84 00",
    "label": "Firestopping",
    "level": 3
  },
  {
    "code": "07 84 13",
    "label": "Penetration Firestopping",
    "level": 4
  },
  {
    "code": "07 84 13.13",
    "label": "Penetration Firestopping Mortars",
    "level": 5
  },
  {
    "code": "07 84 13.16",
    "label": "Penetration Firestopping Devices",
    "level": 5
  },
  {
    "code": "07 84 43",
    "label": "Joint Firestopping",
    "level": 4
  },
  {
    "code": "07 84 53",
    "label": "Building Perimeter Firestopping",
    "level": 4
  },
  {
    "code": "07 86 00",
    "label": "Smoke Seals",
    "level": 3
  },
  {
    "code": "07 87 00",
    "label": "Smoke Containment Barriers",
    "level": 3
  },
  {
    "code": "07 90 00",
    "label": "Joint Protection",
    "level": 2
  },
  {
    "code": "07 91 00",
    "label": "Preformed Joint Seals",
    "level": 3
  },
  {
    "code": "07 91 13",
    "label": "Compression Seals",
    "level": 4
  },
  {
    "code": "07 91 16",
    "label": "Joint Gaskets",
    "level": 4
  },
  {
    "code": "07 91 23",
    "label": "Backer Rods",
    "level": 4
  },
  {
    "code": "07 91 26",
    "label": "Joint Fillers",
    "level": 4
  },
  {
    "code": "07 92 00",
    "label": "Joint Sealants",
    "level": 3
  },
  {
    "code": "07 92 13",
    "label": "Elastomeric Joint Sealants",
    "level": 4
  },
  {
    "code": "07 92 16",
    "label": "Rigid Joint Sealants",
    "level": 4
  },
  {
    "code": "07 92 19",
    "label": "Acoustical Joint Sealants",
    "level": 4
  },
  {
    "code": "07 95 00",
    "label": "Expansion Control",
    "level": 3
  },
  {
    "code": "07 95 13",
    "label": "Expansion Joint Cover Assemblies",
    "level": 4
  },
  {
    "code": "07 95 13.13",
    "label": "Interior Expansion Joint Cover Assemblies",
    "level": 5
  },
  {
    "code": "07 95 13.16",
    "label": "Exterior Expansion Joint Cover Assemblies",
    "level": 5
  },
  {
    "code": "07 95 13.19",
    "label": "Parking Deck Expansion Joint Cover Assemblies",
    "level": 5
  },
  {
    "code": "07 95 53",
    "label": "Joint Slide Bearings",
    "level": 4
  },
  {
    "code": "07 95 63",
    "label": "Bridge Expansion Joint Cover Assemblies",
    "level": 4
  },
  {
    "code": "08 00 00",
    "label": "Openings",
    "level": 1
  },
  {
    "code": "08 01 00",
    "label": "Operation and Maintenance of Openings",
    "level": 3
  },
  {
    "code": "08 01 10",
    "label": "Operation and Maintenance of Doors and Frames",
    "level": 4
  },
  {
    "code": "08 01 11",
    "label": "Operation and Maintenance of Metal Doors and Frames",
    "level": 4
  },
  {
    "code": "08 01 14",
    "label": "Operation and Maintenance of Wood Doors",
    "level": 4
  },
  {
    "code": "08 01 15",
    "label": "Operation and Maintenance of Plastic Doors",
    "level": 4
  },
  {
    "code": "08 01 16",
    "label": "Operation and Maintenance of Composite Doors",
    "level": 4
  },
  {
    "code": "08 01 17",
    "label": "Operation and Maintenance of Integrated Door Opening Assemblies",
    "level": 4
  },
  {
    "code": "08 01 30",
    "label": "Operation and Maintenance of Specialty Doors and Frames",
    "level": 4
  },
  {
    "code": "08 01 32",
    "label": "Operation and Maintenance of Sliding Glass Doors",
    "level": 4
  },
  {
    "code": "08 01 33",
    "label": "Operation and Maintenance of Coiling Doors and Grilles",
    "level": 4
  },
  {
    "code": "08 01 34",
    "label": "Operation and Maintenance of Special Function Doors",
    "level": 4
  },
  {
    "code": "08 01 35",
    "label": "Operation and Maintenance of Folding Doors and Grilles",
    "level": 4
  },
  {
    "code": "08 01 36",
    "label": "Operation and Maintenance of Panel Doors",
    "level": 4
  },
  {
    "code": "08 01 39",
    "label": "Operation and Maintenance of Traffic Doors",
    "level": 4
  },
  {
    "code": "08 01 40",
    "label": "Operation and Maintenance of Entrances, Storefronts, and Curtain Walls",
    "level": 4
  },
  {
    "code": "08 01 41",
    "label": "Operation and Maintenance of Entrances",
    "level": 4
  },
  {
    "code": "08 01 42",
    "label": "Operation and Maintenance of Storefronts",
    "level": 4
  },
  {
    "code": "08 01 44",
    "label": "Operation and Maintenance of Curtain Walls",
    "level": 4
  },
  {
    "code": "08 01 50",
    "label": "Operation and Maintenance of Windows",
    "level": 4
  },
  {
    "code": "08 01 51",
    "label": "Operation and Maintenance of Metal Windows",
    "level": 4
  },
  {
    "code": "08 01 52",
    "label": "Operation and Maintenance of Wood Windows",
    "level": 4
  },
  {
    "code": "08 01 52.61",
    "label": "Wood Window Repairs",
    "level": 5
  },
  {
    "code": "08 01 52.71",
    "label": "Wood Window Rehabilitation",
    "level": 5
  },
  {
    "code": "08 01 52.81",
    "label": "Wood Window Replacement",
    "level": 5
  },
  {
    "code": "08 01 52.91",
    "label": "Wood Window Restoration",
    "level": 5
  },
  {
    "code": "08 01 52.93",
    "label": "Historic Treatment of Wood Windows",
    "level": 5
  },
  {
    "code": "08 01 53",
    "label": "Operation and Maintenance of Plastic Windows",
    "level": 4
  },
  {
    "code": "08 01 54",
    "label": "Operation and Maintenance of Composite Windows",
    "level": 4
  },
  {
    "code": "08 01 56",
    "label": "Operation and Maintenance of Special Function Windows",
    "level": 4
  },
  {
    "code": "08 01 60",
    "label": "Operation and Maintenance of Skylights and Roof Windows",
    "level": 4
  },
  {
    "code": "08 01 61",
    "label": "Operation and Maintenance of Roof Windows",
    "level": 4
  },
  {
    "code": "08 01 62",
    "label": "Operation and Maintenance of Unit Skylights",
    "level": 4
  },
  {
    "code": "08 01 63",
    "label": "Operation and Maintenance of Metal-Framed Skylights",
    "level": 4
  },
  {
    "code": "08 01 64",
    "label": "Operation and Maintenance of Plastic-Framed Skylights",
    "level": 4
  },
  {
    "code": "08 01 70",
    "label": "Operation and Maintenance of Hardware",
    "level": 4
  },
  {
    "code": "08 01 71",
    "label": "Operation and Maintenance of Door Hardware",
    "level": 4
  },
  {
    "code": "08 01 74",
    "label": "Operation and Maintenance of Access Control Hardware",
    "level": 4
  },
  {
    "code": "08 01 75",
    "label": "Operation and Maintenance of Window Hardware",
    "level": 4
  },
  {
    "code": "08 01 80",
    "label": "Maintenance of Glazing",
    "level": 4
  },
  {
    "code": "08 01 81",
    "label": "Maintenance of Glass Glazing",
    "level": 4
  },
  {
    "code": "08 01 84",
    "label": "Maintenance of Plastic Glazing",
    "level": 4
  },
  {
    "code": "08 01 88",
    "label": "Maintenance of Special Function Glazing",
    "level": 4
  },
  {
    "code": "08 01 90",
    "label": "Operation and Maintenance of Louvers and Vents",
    "level": 4
  },
  {
    "code": "08 01 91",
    "label": "Operation and Maintenance of Louvers",
    "level": 4
  },
  {
    "code": "08 01 92",
    "label": "Operation and Maintenance of Louvered Equipment Enclosures",
    "level": 4
  },
  {
    "code": "08 01 95",
    "label": "Operation and Maintenance of Vents",
    "level": 4
  },
  {
    "code": "08 03 00",
    "label": "Conservation Treatment for Period Openings",
    "level": 3
  },
  {
    "code": "08 03 11",
    "label": "Conservation Treatment for Period Metal Doors and Frames",
    "level": 4
  },
  {
    "code": "08 03 11.23",
    "label": "Conservation Treatment for Period Bronze Doors and Frames",
    "level": 5
  },
  {
    "code": "08 03 14",
    "label": "Conservation Treatment for Period Wood Doors",
    "level": 4
  },
  {
    "code": "08 03 14.23",
    "label": "Conservation Treatment for Period Metal-Faced Wood Doors",
    "level": 5
  },
  {
    "code": "08 03 14.33",
    "label": "Conservation Treatment for Period Stile and Rail Wood Doors",
    "level": 5
  },
  {
    "code": "08 03 30",
    "label": "Conservation Treatment for Period Specialty Doors and Frames",
    "level": 4
  },
  {
    "code": "08 03 34",
    "label": "Conservation Treatment for Period Special Function Doors",
    "level": 4
  },
  {
    "code": "08 03 34.59",
    "label": "Conservation Treatment for Period Vault Doors",
    "level": 5
  },
  {
    "code": "08 03 50",
    "label": "Conservation Treatment for Period Windows",
    "level": 4
  },
  {
    "code": "08 03 51",
    "label": "Conservation Treatment for Period Metal Windows",
    "level": 4
  },
  {
    "code": "08 03 51.16",
    "label": "Conservation Treatment for Period Bronze Windows",
    "level": 5
  },
  {
    "code": "08 03 51.23",
    "label": "Conservation Treatment for Period Steel Windows",
    "level": 5
  },
  {
    "code": "08 03 52",
    "label": "Conservation Treatment for Period Wood Windows",
    "level": 4
  },
  {
    "code": "08 03 70",
    "label": "Conservation Treatment for Period Hardware",
    "level": 4
  },
  {
    "code": "08 03 71",
    "label": "Conservation Treatment for Period Door Hardware",
    "level": 4
  },
  {
    "code": "08 03 75",
    "label": "Conservation Treatment for Period Window Hardware",
    "level": 4
  },
  {
    "code": "08 03 90",
    "label": "Conservation Treatment for Period Louvers and Vents",
    "level": 4
  },
  {
    "code": "08 03 91",
    "label": "Conservation Treatment for Period Louvers",
    "level": 4
  },
  {
    "code": "08 03 95",
    "label": "Conservation Treatment for Period Vents",
    "level": 4
  },
  {
    "code": "08 05 00",
    "label": "Common Work Results for Openings",
    "level": 3
  },
  {
    "code": "08 05 05",
    "label": "Selective Demolition for Openings",
    "level": 4
  },
  {
    "code": "08 06 00",
    "label": "Schedules for Openings",
    "level": 3
  },
  {
    "code": "08 06 10",
    "label": "Door Schedule",
    "level": 4
  },
  {
    "code": "08 06 10.13",
    "label": "Door Type Schedule",
    "level": 5
  },
  {
    "code": "08 06 10.16",
    "label": "Frame Type Schedule",
    "level": 5
  },
  {
    "code": "08 06 40",
    "label": "Schedules for Entrances, Storefronts, and Curtain Walls",
    "level": 4
  },
  {
    "code": "08 06 41",
    "label": "Entrance Schedule",
    "level": 4
  },
  {
    "code": "08 06 42",
    "label": "Storefront Schedule",
    "level": 4
  },
  {
    "code": "08 06 50",
    "label": "Window Schedule",
    "level": 4
  },
  {
    "code": "08 06 60",
    "label": "Skylight Schedule",
    "level": 4
  },
  {
    "code": "08 06 70",
    "label": "Hardware Schedule",
    "level": 4
  },
  {
    "code": "08 06 71",
    "label": "Door Hardware Schedule",
    "level": 4
  },
  {
    "code": "08 06 80",
    "label": "Glazing Schedule",
    "level": 4
  },
  {
    "code": "08 06 90",
    "label": "Louver and Vent Schedule",
    "level": 4
  },
  {
    "code": "08 08 00",
    "label": "Commissioning of Openings",
    "level": 3
  },
  {
    "code": "08 10 00",
    "label": "Doors and Frames",
    "level": 2
  },
  {
    "code": "08 11 00",
    "label": "Metal Doors and Frames",
    "level": 3
  },
  {
    "code": "08 11 13",
    "label": "Hollow Metal Doors and Frames",
    "level": 4
  },
  {
    "code": "08 11 13.13",
    "label": "Standard Hollow Metal Doors and Frames",
    "level": 5
  },
  {
    "code": "08 11 13.16",
    "label": "Custom Hollow Metal Doors and Frames",
    "level": 5
  },
  {
    "code": "08 11 16",
    "label": "Aluminum Doors and Frames",
    "level": 4
  },
  {
    "code": "08 11 19",
    "label": "Stainless-Steel Doors and Frames",
    "level": 4
  },
  {
    "code": "08 11 23",
    "label": "Bronze Doors and Frames",
    "level": 4
  },
  {
    "code": "08 11 63",
    "label": "Metal Screen and Storm Doors and Frames",
    "level": 4
  },
  {
    "code": "08 11 63.13",
    "label": "Steel Screen and Storm Doors and Frames",
    "level": 5
  },
  {
    "code": "08 11 63.23",
    "label": "Aluminum Screen and Storm Doors and Frames",
    "level": 5
  },
  {
    "code": "08 11 66",
    "label": "Metal Screen Doors and Frames",
    "level": 4
  },
  {
    "code": "08 11 66.13",
    "label": "Steel Screen Doors and Frames",
    "level": 5
  },
  {
    "code": "08 11 66.23",
    "label": "Aluminum Screen Doors and Frames",
    "level": 5
  },
  {
    "code": "08 11 69",
    "label": "Metal Storm Doors and Frames",
    "level": 4
  },
  {
    "code": "08 11 69.13",
    "label": "Steel Storm Doors and Frames",
    "level": 5
  },
  {
    "code": "08 11 69.23",
    "label": "Aluminum Storm Doors and Frames",
    "level": 5
  },
  {
    "code": "08 11 73",
    "label": "Sliding Metal Fire Doors",
    "level": 4
  },
  {
    "code": "08 11 74",
    "label": "Sliding Metal Grilles",
    "level": 4
  },
  {
    "code": "08 12 00",
    "label": "Metal Frames",
    "level": 3
  },
  {
    "code": "08 12 13",
    "label": "Hollow Metal Frames",
    "level": 4
  },
  {
    "code": "08 12 13.13",
    "label": "Standard Hollow Metal Frames",
    "level": 5
  },
  {
    "code": "08 12 13.53",
    "label": "Custom Hollow Metal Frames",
    "level": 5
  },
  {
    "code": "08 12 16",
    "label": "Aluminum Frames",
    "level": 4
  },
  {
    "code": "08 12 19",
    "label": "Stainless-Steel Frames",
    "level": 4
  },
  {
    "code": "08 12 23",
    "label": "Bronze Frames",
    "level": 4
  },
  {
    "code": "08 13 00",
    "label": "Metal Doors",
    "level": 3
  },
  {
    "code": "08 13 13",
    "label": "Hollow Metal Doors",
    "level": 4
  },
  {
    "code": "08 13 13.13",
    "label": "Standard Hollow Metal Doors",
    "level": 5
  },
  {
    "code": "08 13 13.53",
    "label": "Custom Hollow Metal Doors",
    "level": 5
  },
  {
    "code": "08 13 16",
    "label": "Aluminum Doors",
    "level": 4
  },
  {
    "code": "08 13 16.13",
    "label": "Aluminum Terrace Doors",
    "level": 5
  },
  {
    "code": "08 13 19",
    "label": "Stainless-Steel Doors",
    "level": 4
  },
  {
    "code": "08 13 23",
    "label": "Bronze Doors",
    "level": 4
  },
  {
    "code": "08 13 73",
    "label": "Sliding Metal Doors",
    "level": 4
  },
  {
    "code": "08 13 76",
    "label": "Bifolding Metal Doors",
    "level": 4
  },
  {
    "code": "08 14 00",
    "label": "Wood Doors",
    "level": 3
  },
  {
    "code": "08 14 13",
    "label": "Carved Wood Doors",
    "level": 4
  },
  {
    "code": "08 14 16",
    "label": "Flush Wood Doors",
    "level": 4
  },
  {
    "code": "08 14 23",
    "label": "Clad Wood Doors",
    "level": 4
  },
  {
    "code": "08 14 23.13",
    "label": "Metal-Faced Wood Doors",
    "level": 5
  },
  {
    "code": "08 14 23.16",
    "label": "Plastic-Laminate-Faced Wood Doors",
    "level": 5
  },
  {
    "code": "08 14 23.17",
    "label": "Plastic-Faced Wood Doors",
    "level": 5
  },
  {
    "code": "08 14 23.19",
    "label": "Molded-Hardboard-Faced Wood Doors",
    "level": 5
  },
  {
    "code": "08 14 29",
    "label": "Prefinished Wood Doors",
    "level": 4
  },
  {
    "code": "08 14 33",
    "label": "Stile and Rail Wood Doors",
    "level": 4
  },
  {
    "code": "08 14 33.13",
    "label": "Wood Terrace Doors",
    "level": 5
  },
  {
    "code": "08 14 66",
    "label": "Wood Screen Doors",
    "level": 4
  },
  {
    "code": "08 14 69",
    "label": "Wood Storm Doors",
    "level": 4
  },
  {
    "code": "08 14 73",
    "label": "Sliding Wood Doors",
    "level": 4
  },
  {
    "code": "08 14 76",
    "label": "Bifolding Wood Doors",
    "level": 4
  },
  {
    "code": "08 15 00",
    "label": "Plastic Doors",
    "level": 3
  },
  {
    "code": "08 15 13",
    "label": "Laminated Plastic Doors",
    "level": 4
  },
  {
    "code": "08 15 16",
    "label": "Solid Plastic Doors",
    "level": 4
  },
  {
    "code": "08 15 66",
    "label": "Plastic Screen Doors",
    "level": 4
  },
  {
    "code": "08 15 69",
    "label": "Plastic Storm Doors",
    "level": 4
  },
  {
    "code": "08 15 73",
    "label": "Sliding Plastic Doors",
    "level": 4
  },
  {
    "code": "08 15 76",
    "label": "Bifolding Plastic Doors",
    "level": 4
  },
  {
    "code": "08 16 00",
    "label": "Composite Doors",
    "level": 3
  },
  {
    "code": "08 16 13",
    "label": "Fiberglass Doors",
    "level": 4
  },
  {
    "code": "08 16 73",
    "label": "Sliding Composite Doors",
    "level": 4
  },
  {
    "code": "08 16 76",
    "label": "Bifolding Composite Doors",
    "level": 4
  },
  {
    "code": "08 17 00",
    "label": "Integrated Door Opening Assemblies",
    "level": 3
  },
  {
    "code": "08 17 13",
    "label": "Integrated Metal Door Opening Assemblies",
    "level": 4
  },
  {
    "code": "08 17 23",
    "label": "Integrated Wood Door Opening Assemblies",
    "level": 4
  },
  {
    "code": "08 17 33",
    "label": "Integrated Plastic Door Opening Assemblies",
    "level": 4
  },
  {
    "code": "08 17 43",
    "label": "Integrated Composite Door Opening Assemblies",
    "level": 4
  },
  {
    "code": "08 30 00",
    "label": "Specialty Doors and Frames",
    "level": 2
  },
  {
    "code": "08 31 00",
    "label": "Access Doors and Panels",
    "level": 3
  },
  {
    "code": "08 31 13",
    "label": "Access Doors and Frames",
    "level": 4
  },
  {
    "code": "08 31 13.53",
    "label": "Security Access Doors and Frames",
    "level": 5
  },
  {
    "code": "08 31 16",
    "label": "Access Panels and Frames",
    "level": 4
  },
  {
    "code": "08 32 00",
    "label": "Sliding Glass Doors",
    "level": 3
  },
  {
    "code": "08 32 13",
    "label": "Sliding Aluminum-Framed Glass Doors",
    "level": 4
  },
  {
    "code": "08 32 16",
    "label": "Sliding Plastic-Framed Glass Doors",
    "level": 4
  },
  {
    "code": "08 32 19",
    "label": "Sliding Wood-Framed Glass Doors",
    "level": 4
  },
  {
    "code": "08 33 00",
    "label": "Coiling Doors and Grilles",
    "level": 3
  },
  {
    "code": "08 33 13",
    "label": "Coiling Counter Doors",
    "level": 4
  },
  {
    "code": "08 33 16",
    "label": "Coiling Counter Grilles",
    "level": 4
  },
  {
    "code": "08 33 23",
    "label": "Overhead Coiling Doors",
    "level": 4
  },
  {
    "code": "08 33 23.13",
    "label": "Overhead Rapid Coiling Doors",
    "level": 5
  },
  {
    "code": "08 33 26",
    "label": "Overhead Coiling Grilles",
    "level": 4
  },
  {
    "code": "08 33 33",
    "label": "Side Coiling Doors",
    "level": 4
  },
  {
    "code": "08 33 36",
    "label": "Side Coiling Grilles",
    "level": 4
  },
  {
    "code": "08 33 43",
    "label": "Overhead Coiling Smoke Curtains",
    "level": 4
  },
  {
    "code": "08 33 44",
    "label": "Overhead Coiling Fire Curtains",
    "level": 4
  },
  {
    "code": "08 34 00",
    "label": "Special Function Doors",
    "level": 3
  },
  {
    "code": "08 34 13",
    "label": "Cold Storage Doors",
    "level": 4
  },
  {
    "code": "08 34 16",
    "label": "Hangar Doors",
    "level": 4
  },
  {
    "code": "08 34 19",
    "label": "Industrial Doors",
    "level": 4
  },
  {
    "code": "08 34 33",
    "label": "Lightproof Doors",
    "level": 4
  },
  {
    "code": "08 34 36",
    "label": "Darkroom Doors",
    "level": 4
  },
  {
    "code": "08 34 46",
    "label": "Radio-Frequency-Interference Shielding Doors",
    "level": 4
  },
  {
    "code": "08 34 49",
    "label": "Radiation Shielding Doors and Frames",
    "level": 4
  },
  {
    "code": "08 34 49.13",
    "label": "Neutron Shielding Doors and Frames",
    "level": 5
  },
  {
    "code": "08 34 53",
    "label": "Security Doors and Frames",
    "level": 4
  },
  {
    "code": "08 34 56",
    "label": "Security Gates",
    "level": 4
  },
  {
    "code": "08 34 58",
    "label": "File Room Doors and Frames",
    "level": 4
  },
  {
    "code": "08 34 59",
    "label": "Vault Doors and Day Gates",
    "level": 4
  },
  {
    "code": "08 34 73",
    "label": "Sound Control Door Assemblies",
    "level": 4
  },
  {
    "code": "08 34 73.13",
    "label": "Metal Sound Control Door Assemblies",
    "level": 5
  },
  {
    "code": "08 34 73.16",
    "label": "Wood Sound Control Door Assemblies",
    "level": 5
  },
  {
    "code": "08 35 00",
    "label": "Folding Doors and Grilles",
    "level": 3
  },
  {
    "code": "08 35 13",
    "label": "Folding Doors",
    "level": 4
  },
  {
    "code": "08 35 13.13",
    "label": "Accordion Folding Doors",
    "level": 5
  },
  {
    "code": "08 35 13.23",
    "label": "Accordion Folding Fire Doors",
    "level": 5
  },
  {
    "code": "08 35 13.33",
    "label": "Panel Folding Doors",
    "level": 5
  },
  {
    "code": "08 35 16",
    "label": "Folding Grilles",
    "level": 4
  },
  {
    "code": "08 35 16.13",
    "label": "Accordion Folding Grilles",
    "level": 5
  },
  {
    "code": "08 36 00",
    "label": "Panel Doors",
    "level": 3
  },
  {
    "code": "08 36 13",
    "label": "Sectional Doors",
    "level": 4
  },
  {
    "code": "08 36 16",
    "label": "Single-Panel Doors",
    "level": 4
  },
  {
    "code": "08 36 19",
    "label": "Multi-Leaf Vertical Lift Doors",
    "level": 4
  },
  {
    "code": "08 36 23",
    "label": "Telescoping Vertical Lift Doors",
    "level": 4
  },
  {
    "code": "08 38 00",
    "label": "Traffic Doors",
    "level": 3
  },
  {
    "code": "08 38 13",
    "label": "Flexible Strip Doors",
    "level": 4
  },
  {
    "code": "08 38 16",
    "label": "Flexible Traffic Doors",
    "level": 4
  },
  {
    "code": "08 38 19",
    "label": "Rigid Traffic Doors",
    "level": 4
  },
  {
    "code": "08 39 00",
    "label": "Pressure-Resistant Doors",
    "level": 3
  },
  {
    "code": "08 39 13",
    "label": "Airtight Doors",
    "level": 4
  },
  {
    "code": "08 39 19",
    "label": "Watertight Doors",
    "level": 4
  },
  {
    "code": "08 39 53",
    "label": "Blast-Resistant Doors",
    "level": 4
  },
  {
    "code": "08 40 00",
    "label": "Entrances, Storefronts, and Curtain Walls",
    "level": 2
  },
  {
    "code": "08 41 00",
    "label": "Entrances and Storefronts",
    "level": 3
  },
  {
    "code": "08 41 13",
    "label": "Aluminum-Framed Entrances and Storefronts",
    "level": 4
  },
  {
    "code": "08 41 13.13",
    "label": "Fire-Rated Aluminum-Framed Entrances and Storefronts",
    "level": 5
  },
  {
    "code": "08 41 16",
    "label": "Bronze-Framed Entrances and Storefronts",
    "level": 4
  },
  {
    "code": "08 41 19",
    "label": "Stainless-Steel-Framed Entrances and Storefronts",
    "level": 4
  },
  {
    "code": "08 41 23",
    "label": "Steel-Framed Entrances and Storefronts",
    "level": 4
  },
  {
    "code": "08 41 26",
    "label": "All-Glass Entrances and Storefronts",
    "level": 4
  },
  {
    "code": "08 41 26.13",
    "label": "Point Supported All-Glass Storefronts",
    "level": 5
  },
  {
    "code": "08 42 00",
    "label": "Entrances",
    "level": 3
  },
  {
    "code": "08 42 13",
    "label": "Aluminum-Framed Entrances",
    "level": 4
  },
  {
    "code": "08 42 26",
    "label": "All-Glass Entrances",
    "level": 4
  },
  {
    "code": "08 42 29",
    "label": "Automatic Entrances",
    "level": 4
  },
  {
    "code": "08 42 29.13",
    "label": "Folding Automatic Entrances",
    "level": 5
  },
  {
    "code": "08 42 29.23",
    "label": "Sliding Automatic Entrances",
    "level": 5
  },
  {
    "code": "08 42 29.33",
    "label": "Swinging Automatic Entrances",
    "level": 5
  },
  {
    "code": "08 42 33",
    "label": "Revolving Door Entrances",
    "level": 4
  },
  {
    "code": "08 42 33.13",
    "label": "Security Revolving Door Entrances",
    "level": 5
  },
  {
    "code": "08 42 36",
    "label": "Balanced Door Entrances",
    "level": 4
  },
  {
    "code": "08 42 39",
    "label": "Pressure-Resistant Entrances",
    "level": 4
  },
  {
    "code": "08 42 43",
    "label": "Intensive Care Unit/Critical Care Unit Entrances",
    "level": 4
  },
  {
    "code": "08 43 00",
    "label": "Storefronts",
    "level": 3
  },
  {
    "code": "08 43 11",
    "label": "Timber-Framed Storefronts",
    "level": 4
  },
  {
    "code": "08 43 13",
    "label": "Aluminum-Framed Storefronts",
    "level": 4
  },
  {
    "code": "08 43 13.13",
    "label": "Fire-Rated Aluminum Storefronts",
    "level": 5
  },
  {
    "code": "08 43 16",
    "label": "Bronze-Framed Storefronts",
    "level": 4
  },
  {
    "code": "08 43 19",
    "label": "Stainless-Steel-Framed Storefronts",
    "level": 4
  },
  {
    "code": "08 43 23",
    "label": "Steel-Framed Storefronts",
    "level": 4
  },
  {
    "code": "08 43 26",
    "label": "All-Glass Storefronts",
    "level": 4
  },
  {
    "code": "08 43 27",
    "label": "Channel Glass Storefronts",
    "level": 4
  },
  {
    "code": "08 43 29",
    "label": "Sliding Storefronts",
    "level": 4
  },
  {
    "code": "08 44 00",
    "label": "Curtain Wall and Glazed Assemblies",
    "level": 3
  },
  {
    "code": "08 44 11",
    "label": "Glazed Timber Curtain Walls",
    "level": 4
  },
  {
    "code": "08 44 12",
    "label": "Glazed Composite Curtain Wall",
    "level": 4
  },
  {
    "code": "08 44 12.13",
    "label": "Glazed Fiberglass Curtain Wall",
    "level": 5
  },
  {
    "code": "08 44 13",
    "label": "Glazed Aluminum Curtain Walls",
    "level": 4
  },
  {
    "code": "08 44 16",
    "label": "Glazed Bronze Curtain Walls",
    "level": 4
  },
  {
    "code": "08 44 18",
    "label": "Glazed Steel Curtain Walls",
    "level": 4
  },
  {
    "code": "08 44 19",
    "label": "Glazed Stainless-Steel Curtain Walls",
    "level": 4
  },
  {
    "code": "08 44 23",
    "label": "Structural Sealant Glazed Curtain Walls",
    "level": 4
  },
  {
    "code": "08 44 26",
    "label": "Structural Glass Curtain Walls",
    "level": 4
  },
  {
    "code": "08 44 26.13",
    "label": "Glass Framed Point Supported Glass Curtain Walls",
    "level": 5
  },
  {
    "code": "08 44 26.16",
    "label": "Metal Framed Point Supported Glass Curtain Walls",
    "level": 5
  },
  {
    "code": "08 44 26.23",
    "label": "Cable Framed Point Supported Glass Curtain Walls",
    "level": 5
  },
  {
    "code": "08 44 33",
    "label": "Sloped Glazing Assemblies",
    "level": 4
  },
  {
    "code": "08 45 00",
    "label": "Translucent Wall and Roof Assemblies",
    "level": 3
  },
  {
    "code": "08 45 13",
    "label": "Structured-Polycarbonate-Panel Assemblies",
    "level": 4
  },
  {
    "code": "08 45 23",
    "label": "Fiberglass-Sandwich-Panel Assemblies",
    "level": 4
  },
  {
    "code": "08 46 00",
    "label": "Window Wall Assemblies",
    "level": 3
  },
  {
    "code": "08 50 00",
    "label": "Windows",
    "level": 2
  },
  {
    "code": "08 51 00",
    "label": "Metal Windows",
    "level": 3
  },
  {
    "code": "08 51 13",
    "label": "Aluminum Windows",
    "level": 4
  },
  {
    "code": "08 51 16",
    "label": "Bronze Windows",
    "level": 4
  },
  {
    "code": "08 51 19",
    "label": "Stainless-Steel Windows",
    "level": 4
  },
  {
    "code": "08 51 23",
    "label": "Steel Windows",
    "level": 4
  },
  {
    "code": "08 51 23.13",
    "label": "Hot-Rolled Steel Windows",
    "level": 5
  },
  {
    "code": "08 51 23.23",
    "label": "Cold-Rolled Steel Windows",
    "level": 5
  },
  {
    "code": "08 51 66",
    "label": "Metal Window Screens",
    "level": 4
  },
  {
    "code": "08 51 69",
    "label": "Metal Storm Windows",
    "level": 4
  },
  {
    "code": "08 52 00",
    "label": "Wood Windows",
    "level": 3
  },
  {
    "code": "08 52 13",
    "label": "Metal-Clad Wood Windows",
    "level": 4
  },
  {
    "code": "08 52 16",
    "label": "Plastic-Clad Wood Windows",
    "level": 4
  },
  {
    "code": "08 52 66",
    "label": "Wood Window Screens",
    "level": 4
  },
  {
    "code": "08 52 69",
    "label": "Wood Storm Windows",
    "level": 4
  },
  {
    "code": "08 53 00",
    "label": "Plastic Windows",
    "level": 3
  },
  {
    "code": "08 53 13",
    "label": "Vinyl Windows",
    "level": 4
  },
  {
    "code": "08 53 66",
    "label": "Vinyl Window Screens",
    "level": 4
  },
  {
    "code": "08 53 69",
    "label": "Vinyl Storm Windows",
    "level": 4
  },
  {
    "code": "08 54 00",
    "label": "Composite Windows",
    "level": 3
  },
  {
    "code": "08 54 13",
    "label": "Fiberglass Windows",
    "level": 4
  },
  {
    "code": "08 54 66",
    "label": "Fiberglass Window Screens",
    "level": 4
  },
  {
    "code": "08 54 69",
    "label": "Fiberglass Storm Windows",
    "level": 4
  },
  {
    "code": "08 55 00",
    "label": "Pressure-Resistant Windows",
    "level": 3
  },
  {
    "code": "08 55 13",
    "label": "Tornado-Resistant Windows",
    "level": 4
  },
  {
    "code": "08 55 23",
    "label": "Blast-Resistant Windows",
    "level": 4
  },
  {
    "code": "08 56 00",
    "label": "Special Function Windows",
    "level": 3
  },
  {
    "code": "08 56 19",
    "label": "Pass Windows",
    "level": 4
  },
  {
    "code": "08 56 46",
    "label": "Radio-Frequency-Interference Shielding Windows",
    "level": 4
  },
  {
    "code": "08 56 49",
    "label": "Radiation Shielding Windows",
    "level": 4
  },
  {
    "code": "08 56 53",
    "label": "Security Windows",
    "level": 4
  },
  {
    "code": "08 56 56",
    "label": "Security Window Screens",
    "level": 4
  },
  {
    "code": "08 56 59",
    "label": "Service and Teller Window Units",
    "level": 4
  },
  {
    "code": "08 56 73",
    "label": "Sound Control Windows",
    "level": 4
  },
  {
    "code": "08 56 88",
    "label": "Interior Insulating Windows",
    "level": 4
  },
  {
    "code": "08 60 00",
    "label": "Roof Windows and Skylights",
    "level": 2
  },
  {
    "code": "08 61 00",
    "label": "Roof Windows",
    "level": 3
  },
  {
    "code": "08 61 13",
    "label": "Metal Roof Windows",
    "level": 4
  },
  {
    "code": "08 61 16",
    "label": "Wood Roof Windows",
    "level": 4
  },
  {
    "code": "08 62 00",
    "label": "Unit Skylights",
    "level": 3
  },
  {
    "code": "08 62 13",
    "label": "Domed Unit Skylights",
    "level": 4
  },
  {
    "code": "08 62 16",
    "label": "Pyramidal Unit Skylights",
    "level": 4
  },
  {
    "code": "08 62 19",
    "label": "Vaulted Unit Skylights",
    "level": 4
  },
  {
    "code": "08 62 23",
    "label": "Tubular Skylights",
    "level": 4
  },
  {
    "code": "08 63 00",
    "label": "Metal-Framed Skylights",
    "level": 3
  },
  {
    "code": "08 63 13",
    "label": "Domed Metal-Framed Skylights",
    "level": 4
  },
  {
    "code": "08 63 16",
    "label": "Pyramidal Metal-Framed Skylights",
    "level": 4
  },
  {
    "code": "08 63 19",
    "label": "Vaulted Metal-Framed Skylights",
    "level": 4
  },
  {
    "code": "08 63 23",
    "label": "Ridge Metal-Framed Skylights",
    "level": 4
  },
  {
    "code": "08 63 53",
    "label": "Motorized Metal-Framed Skylights",
    "level": 4
  },
  {
    "code": "08 64 00",
    "label": "Plastic-Framed Skylights",
    "level": 3
  },
  {
    "code": "08 65 00",
    "label": "Glazed Canopies",
    "level": 3
  },
  {
    "code": "08 65 13",
    "label": "Suspended Glazed Canopies",
    "level": 4
  },
  {
    "code": "08 67 00",
    "label": "Skylight Protection and Screens",
    "level": 3
  },
  {
    "code": "08 70 00",
    "label": "Hardware",
    "level": 2
  },
  {
    "code": "08 71 00",
    "label": "Door Hardware",
    "level": 3
  },
  {
    "code": "08 71 13",
    "label": "Automatic Door Operators",
    "level": 4
  },
  {
    "code": "08 71 53",
    "label": "Security Door Hardware",
    "level": 4
  },
  {
    "code": "08 75 00",
    "label": "Window Hardware",
    "level": 3
  },
  {
    "code": "08 75 13",
    "label": "Automatic Window Equipment",
    "level": 4
  },
  {
    "code": "08 75 16",
    "label": "Window Operators",
    "level": 4
  },
  {
    "code": "08 78 00",
    "label": "Special Function Hardware",
    "level": 3
  },
  {
    "code": "08 79 00",
    "label": "Hardware Accessories",
    "level": 3
  },
  {
    "code": "08 79 13",
    "label": "Key Storage Equipment",
    "level": 4
  },
  {
    "code": "08 80 00",
    "label": "Glazing",
    "level": 2
  },
  {
    "code": "08 81 00",
    "label": "Glass Glazing",
    "level": 3
  },
  {
    "code": "08 81 13",
    "label": "Decorative Glass Glazing",
    "level": 4
  },
  {
    "code": "08 81 23",
    "label": "Exterior Glass Glazing",
    "level": 4
  },
  {
    "code": "08 81 26",
    "label": "Interior Glass Glazing",
    "level": 4
  },
  {
    "code": "08 83 00",
    "label": "Mirrors",
    "level": 3
  },
  {
    "code": "08 83 13",
    "label": "Mirrored Glass Glazing",
    "level": 4
  },
  {
    "code": "08 83 16",
    "label": "Mirrored Plastic Glazing",
    "level": 4
  },
  {
    "code": "08 84 00",
    "label": "Plastic Glazing",
    "level": 3
  },
  {
    "code": "08 84 13",
    "label": "Decorative Plastic Glazing",
    "level": 4
  },
  {
    "code": "08 85 00",
    "label": "Glazing Accessories",
    "level": 3
  },
  {
    "code": "08 87 00",
    "label": "Glazing Surface Films",
    "level": 3
  },
  {
    "code": "08 87 13",
    "label": "Solar Control Films",
    "level": 4
  },
  {
    "code": "08 87 23",
    "label": "Safety and Security Films",
    "level": 4
  },
  {
    "code": "08 87 23.13",
    "label": "Safety Films",
    "level": 5
  },
  {
    "code": "08 87 23.16",
    "label": "Security Films",
    "level": 5
  },
  {
    "code": "08 87 26",
    "label": "Bird Control Film",
    "level": 4
  },
  {
    "code": "08 87 33",
    "label": "Decorative Films",
    "level": 4
  },
  {
    "code": "08 88 00",
    "label": "Special Function Glazing",
    "level": 3
  },
  {
    "code": "08 88 13",
    "label": "Fire-Resistant Glazing",
    "level": 4
  },
  {
    "code": "08 88 19",
    "label": "Hurricane-Resistant Glazing",
    "level": 4
  },
  {
    "code": "08 88 23",
    "label": "Cable Suspended Glazing",
    "level": 4
  },
  {
    "code": "08 88 33",
    "label": "Transparent Mirrored Glazing",
    "level": 4
  },
  {
    "code": "08 88 36",
    "label": "Switchable Glass",
    "level": 4
  },
  {
    "code": "08 88 36.16",
    "label": "Electronically Controlled Switchable Glass",
    "level": 5
  },
  {
    "code": "08 88 39",
    "label": "Pressure-Resistant Glazing",
    "level": 4
  },
  {
    "code": "08 88 49",
    "label": "Radiation-Resistant Glazing",
    "level": 4
  },
  {
    "code": "08 88 53",
    "label": "Security Glazing",
    "level": 4
  },
  {
    "code": "08 88 56",
    "label": "Ballistics-Resistant Glazing",
    "level": 4
  },
  {
    "code": "08 90 00",
    "label": "Louvers and Vents",
    "level": 2
  },
  {
    "code": "08 91 00",
    "label": "Louvers",
    "level": 3
  },
  {
    "code": "08 91 13",
    "label": "Motorized Wall Louvers",
    "level": 4
  },
  {
    "code": "08 91 16",
    "label": "Operable Wall Louvers",
    "level": 4
  },
  {
    "code": "08 91 19",
    "label": "Fixed Louvers",
    "level": 4
  },
  {
    "code": "08 91 26",
    "label": "Door Louvers",
    "level": 4
  },
  {
    "code": "08 92 00",
    "label": "Louvered Equipment Enclosures",
    "level": 3
  },
  {
    "code": "08 95 00",
    "label": "Vents",
    "level": 3
  },
  {
    "code": "08 95 13",
    "label": "Soffit Vents",
    "level": 4
  },
  {
    "code": "08 95 16",
    "label": "Wall Vents",
    "level": 4
  },
  {
    "code": "08 95 33",
    "label": "Explosion Vents",
    "level": 4
  },
  {
    "code": "08 95 43",
    "label": "Flood Vents",
    "level": 4
  },
  {
    "code": "09 00 00",
    "label": "Finishes",
    "level": 1
  },
  {
    "code": "09 01 00",
    "label": "Maintenance of Finishes",
    "level": 3
  },
  {
    "code": "09 01 20",
    "label": "Maintenance of Plaster and Gypsum Board",
    "level": 4
  },
  {
    "code": "09 01 20.91",
    "label": "Plaster Restoration",
    "level": 5
  },
  {
    "code": "09 01 30",
    "label": "Maintenance of Tiling",
    "level": 4
  },
  {
    "code": "09 01 30.91",
    "label": "Tile Restoration",
    "level": 5
  },
  {
    "code": "09 01 50",
    "label": "Maintenance of Ceilings",
    "level": 4
  },
  {
    "code": "09 01 50.91",
    "label": "Ceiling Restoration",
    "level": 5
  },
  {
    "code": "09 01 60",
    "label": "Maintenance of Flooring",
    "level": 4
  },
  {
    "code": "09 01 60.91",
    "label": "Flooring Restoration",
    "level": 5
  },
  {
    "code": "09 01 70",
    "label": "Maintenance of Wall Finishes",
    "level": 4
  },
  {
    "code": "09 01 70.91",
    "label": "Wall Finish Restoration",
    "level": 5
  },
  {
    "code": "09 01 80",
    "label": "Maintenance of Acoustic Treatment",
    "level": 4
  },
  {
    "code": "09 01 90",
    "label": "Maintenance of Painting and Coating",
    "level": 4
  },
  {
    "code": "09 01 90.51",
    "label": "Paint Cleaning",
    "level": 5
  },
  {
    "code": "09 01 90.52",
    "label": "Maintenance Repainting",
    "level": 5
  },
  {
    "code": "09 01 90.53",
    "label": "Maintenance Coatings",
    "level": 5
  },
  {
    "code": "09 01 90.61",
    "label": "Repainting",
    "level": 5
  },
  {
    "code": "09 01 90.91",
    "label": "Paint Restoration",
    "level": 5
  },
  {
    "code": "09 01 90.92",
    "label": "Coating Restoration",
    "level": 5
  },
  {
    "code": "09 01 90.93",
    "label": "Paint Preservation",
    "level": 5
  },
  {
    "code": "09 03 00",
    "label": "Conservation Treatment of Period Finishes",
    "level": 3
  },
  {
    "code": "09 03 21",
    "label": "Conservation Treatment for Period Plaster Assemblies",
    "level": 4
  },
  {
    "code": "09 03 25",
    "label": "Conservation Treatment for Period Plastering",
    "level": 4
  },
  {
    "code": "09 03 25.23",
    "label": "Conservation Treatment for Period Lime-Based Plaster",
    "level": 5
  },
  {
    "code": "09 03 30",
    "label": "Conservation Treatment for Period Tile",
    "level": 4
  },
  {
    "code": "09 03 50",
    "label": "Conservation Treatment for Period Ceilings",
    "level": 4
  },
  {
    "code": "09 03 51",
    "label": "Conservation Treatment for Period Suspended Ceilings",
    "level": 4
  },
  {
    "code": "09 03 56",
    "label": "Conservation Treatment for Textured Ceilings",
    "level": 4
  },
  {
    "code": "09 03 56.16",
    "label": "Conservation Treatment for Period Metal-Panel Textured Ceilings",
    "level": 5
  },
  {
    "code": "09 03 60",
    "label": "Conservation Treatment for Period Flooring",
    "level": 4
  },
  {
    "code": "09 03 63",
    "label": "Conservation Treatment for Period Masonry Flooring",
    "level": 4
  },
  {
    "code": "09 03 63.13",
    "label": "Conservation Treatment for Period Brick Flooring",
    "level": 5
  },
  {
    "code": "09 03 63.40",
    "label": "Conservation Treatment for Period Stone Flooring",
    "level": 5
  },
  {
    "code": "09 03 64",
    "label": "Conservation Treatment for Period Wood Flooring",
    "level": 4
  },
  {
    "code": "09 03 64.29",
    "label": "Conservation Treatment for Period Wood Strip and Plank Flooring",
    "level": 5
  },
  {
    "code": "09 03 65",
    "label": "Conservation Treatment for Period Resilient Flooring",
    "level": 4
  },
  {
    "code": "09 03 65.16",
    "label": "Conservation Treatment for Period Resilient Sheet Flooring",
    "level": 5
  },
  {
    "code": "09 03 66",
    "label": "Conservation Treatment for Period Terrazzo Flooring",
    "level": 4
  },
  {
    "code": "09 03 70",
    "label": "Conservation Treatment for Period Wall Finishes",
    "level": 4
  },
  {
    "code": "09 03 72",
    "label": "Conservation Treatment for Period Wall Coverings",
    "level": 4
  },
  {
    "code": "09 03 90",
    "label": "Conservation Treatment for Period Painting and Coating",
    "level": 4
  },
  {
    "code": "09 03 91",
    "label": "Conservation Treatment for Period Painted Surfaces",
    "level": 4
  },
  {
    "code": "09 03 91.13",
    "label": "Conservation Treatment for Period Exterior Painting",
    "level": 5
  },
  {
    "code": "09 03 91.23",
    "label": "Conservation Treatment for Period Interior Painting",
    "level": 5
  },
  {
    "code": "09 05 00",
    "label": "Common Work Results for Finishes",
    "level": 3
  },
  {
    "code": "09 05 05",
    "label": "Selective Demolition for Finishes",
    "level": 4
  },
  {
    "code": "09 05 13",
    "label": "Common Finishes",
    "level": 4
  },
  {
    "code": "09 05 61",
    "label": "Common Work Results for Flooring Preparation",
    "level": 4
  },
  {
    "code": "09 05 61.13",
    "label": "Moisture Vapor Emission Control",
    "level": 5
  },
  {
    "code": "09 05 71",
    "label": "Acoustic Underlayment",
    "level": 4
  },
  {
    "code": "09 06 00",
    "label": "Schedules for Finishes",
    "level": 3
  },
  {
    "code": "09 06 00.13",
    "label": "Room Finish Schedule",
    "level": 5
  },
  {
    "code": "09 06 20",
    "label": "Schedules for Plaster and Gypsum Board",
    "level": 4
  },
  {
    "code": "09 06 30",
    "label": "Schedules for Tiling",
    "level": 4
  },
  {
    "code": "09 06 50",
    "label": "Schedules for Ceilings",
    "level": 4
  },
  {
    "code": "09 06 60",
    "label": "Schedules for Flooring",
    "level": 4
  },
  {
    "code": "09 06 70",
    "label": "Schedules for Wall Finishes",
    "level": 4
  },
  {
    "code": "09 06 80",
    "label": "Schedules for Acoustical Treatment",
    "level": 4
  },
  {
    "code": "09 06 90",
    "label": "Schedules for Painting and Coating",
    "level": 4
  },
  {
    "code": "09 06 90.13",
    "label": "Paint Schedule",
    "level": 5
  },
  {
    "code": "09 08 00",
    "label": "Commissioning of Finishes",
    "level": 3
  },
  {
    "code": "09 20 00",
    "label": "Plaster and Gypsum Board",
    "level": 2
  },
  {
    "code": "09 21 00",
    "label": "Plaster and Gypsum Board Assemblies",
    "level": 3
  },
  {
    "code": "09 21 13",
    "label": "Plaster Assemblies",
    "level": 4
  },
  {
    "code": "09 21 16",
    "label": "Gypsum Board Assemblies",
    "level": 4
  },
  {
    "code": "09 21 16.23",
    "label": "Gypsum Board Shaft Wall Assemblies",
    "level": 5
  },
  {
    "code": "09 21 16.33",
    "label": "Gypsum Board Area Separation Wall Assemblies",
    "level": 5
  },
  {
    "code": "09 22 00",
    "label": "Supports for Plaster and Gypsum Board",
    "level": 3
  },
  {
    "code": "09 22 13",
    "label": "Metal Furring",
    "level": 4
  },
  {
    "code": "09 22 13.13",
    "label": "Metal Channel Furring",
    "level": 5
  },
  {
    "code": "09 22 13.23",
    "label": "Resilient Channel Furring",
    "level": 5
  },
  {
    "code": "09 22 16",
    "label": "Non-Structural Metal Framing",
    "level": 4
  },
  {
    "code": "09 22 16.13",
    "label": "Non-Structural Metal Stud Framing",
    "level": 5
  },
  {
    "code": "09 22 26",
    "label": "Suspension Systems",
    "level": 4
  },
  {
    "code": "09 22 26.23",
    "label": "Metal Suspension Systems",
    "level": 5
  },
  {
    "code": "09 22 26.33",
    "label": "Plastic Suspension Systems",
    "level": 5
  },
  {
    "code": "09 22 36",
    "label": "Lath",
    "level": 4
  },
  {
    "code": "09 22 36.13",
    "label": "Gypsum Lath",
    "level": 5
  },
  {
    "code": "09 22 36.23",
    "label": "Metal Lath",
    "level": 5
  },
  {
    "code": "09 22 39",
    "label": "Veneer Plaster Base",
    "level": 4
  },
  {
    "code": "09 23 00",
    "label": "Gypsum Plastering",
    "level": 3
  },
  {
    "code": "09 23 13",
    "label": "Acoustical Gypsum Plastering",
    "level": 4
  },
  {
    "code": "09 23 82",
    "label": "Fireproof Gypsum Plastering",
    "level": 4
  },
  {
    "code": "09 24 00",
    "label": "Cement Plastering",
    "level": 3
  },
  {
    "code": "09 24 13",
    "label": "Adobe Finish",
    "level": 4
  },
  {
    "code": "09 24 23",
    "label": "Cement Stucco",
    "level": 4
  },
  {
    "code": "09 24 33",
    "label": "Cement Parging",
    "level": 4
  },
  {
    "code": "09 25 00",
    "label": "Other Plastering",
    "level": 3
  },
  {
    "code": "09 25 13",
    "label": "Acrylic Plastering",
    "level": 4
  },
  {
    "code": "09 25 13.13",
    "label": "Acrylic Plaster Finish",
    "level": 5
  },
  {
    "code": "09 25 23",
    "label": "Lime Based Plastering",
    "level": 4
  },
  {
    "code": "09 25 26",
    "label": "Natural Clay Plastering",
    "level": 4
  },
  {
    "code": "09 26 00",
    "label": "Veneer Plastering",
    "level": 3
  },
  {
    "code": "09 26 13",
    "label": "Gypsum Veneer Plastering",
    "level": 4
  },
  {
    "code": "09 27 00",
    "label": "Plaster Fabrications",
    "level": 3
  },
  {
    "code": "09 27 13",
    "label": "Glass-Fiber-Reinforced Gypsum Fabrications",
    "level": 4
  },
  {
    "code": "09 27 23",
    "label": "Simulated Plaster Fabrications",
    "level": 4
  },
  {
    "code": "09 28 00",
    "label": "Backing Boards and Underlayments",
    "level": 3
  },
  {
    "code": "09 28 13",
    "label": "Cementitious Backing Boards",
    "level": 4
  },
  {
    "code": "09 28 16",
    "label": "Glass-Mat Faced Gypsum Backing Boards",
    "level": 4
  },
  {
    "code": "09 28 19",
    "label": "Fibered Gypsum Backing Boards",
    "level": 4
  },
  {
    "code": "09 29 00",
    "label": "Gypsum Board",
    "level": 3
  },
  {
    "code": "09 29 82",
    "label": "Gypsum Board Fireproofing",
    "level": 4
  },
  {
    "code": "09 30 00",
    "label": "Tiling",
    "level": 2
  },
  {
    "code": "09 30 13",
    "label": "Ceramic Tiling",
    "level": 4
  },
  {
    "code": "09 30 16",
    "label": "Quarry Tiling",
    "level": 4
  },
  {
    "code": "09 30 19",
    "label": "Paver Tiling",
    "level": 4
  },
  {
    "code": "09 30 23",
    "label": "Glass Mosaic Tiling",
    "level": 4
  },
  {
    "code": "09 30 26",
    "label": "Plastic Tiling",
    "level": 4
  },
  {
    "code": "09 30 29",
    "label": "Metal Tiling",
    "level": 4
  },
  {
    "code": "09 30 33",
    "label": "Stone Tiling",
    "level": 4
  },
  {
    "code": "09 30 36",
    "label": "Concrete Tiling",
    "level": 4
  },
  {
    "code": "09 30 39",
    "label": "Brick Tiling",
    "level": 4
  },
  {
    "code": "09 31 00",
    "label": "Thin-Set Tiling",
    "level": 3
  },
  {
    "code": "09 31 13",
    "label": "Thin-Set Ceramic Tiling",
    "level": 4
  },
  {
    "code": "09 31 16",
    "label": "Thin-Set Quarry Tiling",
    "level": 4
  },
  {
    "code": "09 31 19",
    "label": "Thin-Set Paver Tiling",
    "level": 4
  },
  {
    "code": "09 31 23",
    "label": "Thin-Set Glass Mosaic Tiling",
    "level": 4
  },
  {
    "code": "09 31 26",
    "label": "Thin-Set Plastic Tiling",
    "level": 4
  },
  {
    "code": "09 31 29",
    "label": "Thin-Set Metal Tiling",
    "level": 4
  },
  {
    "code": "09 31 33",
    "label": "Thin-Set Stone Tiling",
    "level": 4
  },
  {
    "code": "09 31 36",
    "label": "Thin-Set Concrete Tiling",
    "level": 4
  },
  {
    "code": "09 32 00",
    "label": "Mortar-Bed Tiling",
    "level": 3
  },
  {
    "code": "09 32 13",
    "label": "Mortar-Bed Ceramic Tiling",
    "level": 4
  },
  {
    "code": "09 32 16",
    "label": "Mortar-Bed Quarry Tiling",
    "level": 4
  },
  {
    "code": "09 32 19",
    "label": "Mortar-Bed Paver Tiling",
    "level": 4
  },
  {
    "code": "09 32 23",
    "label": "Mortar-Bed Glass Mosaic Tiling",
    "level": 4
  },
  {
    "code": "09 32 26",
    "label": "Mortar-Bed Plastic Tiling",
    "level": 4
  },
  {
    "code": "09 32 29",
    "label": "Mortar-Bed Metal Tiling",
    "level": 4
  },
  {
    "code": "09 32 33",
    "label": "Mortar-Bed Stone Tiling",
    "level": 4
  },
  {
    "code": "09 32 36",
    "label": "Mortar-Bed Concrete Tiling",
    "level": 4
  },
  {
    "code": "09 33 00",
    "label": "Conductive Tiling",
    "level": 3
  },
  {
    "code": "09 33 13",
    "label": "Conductive Ceramic Tiling",
    "level": 4
  },
  {
    "code": "09 33 16",
    "label": "Conductive Quarry Tiling",
    "level": 4
  },
  {
    "code": "09 33 19",
    "label": "Conductive Paver Tiling",
    "level": 4
  },
  {
    "code": "09 33 23",
    "label": "Conductive Glass Mosaic Tiling",
    "level": 4
  },
  {
    "code": "09 33 26",
    "label": "Conductive Plastic Tiling",
    "level": 4
  },
  {
    "code": "09 33 29",
    "label": "Conductive Metal Tiling",
    "level": 4
  },
  {
    "code": "09 33 33",
    "label": "Conductive Stone Tiling",
    "level": 4
  },
  {
    "code": "09 33 36",
    "label": "Conductive Concrete Tiling",
    "level": 4
  },
  {
    "code": "09 34 00",
    "label": "Waterproofing-Membrane Tiling",
    "level": 3
  },
  {
    "code": "09 34 13",
    "label": "Waterproofing-Membrane Ceramic Tiling",
    "level": 4
  },
  {
    "code": "09 34 16",
    "label": "Waterproofing-Membrane Quarry Tiling",
    "level": 4
  },
  {
    "code": "09 34 19",
    "label": "Waterproofing-Membrane Paver Tiling",
    "level": 4
  },
  {
    "code": "09 34 23",
    "label": "Waterproofing-Membrane Glass Mosaic Tiling",
    "level": 4
  },
  {
    "code": "09 34 26",
    "label": "Waterproofing-Membrane Plastic Tiling",
    "level": 4
  },
  {
    "code": "09 34 29",
    "label": "Waterproofing-Membrane Metal Tiling",
    "level": 4
  },
  {
    "code": "09 34 33",
    "label": "Waterproofing-Membrane Stone Tiling",
    "level": 4
  },
  {
    "code": "09 34 36",
    "label": "Waterproofing-Membrane Concrete Tiling",
    "level": 4
  },
  {
    "code": "09 35 00",
    "label": "Chemical-Resistant Tiling",
    "level": 3
  },
  {
    "code": "09 35 13",
    "label": "Chemical-Resistant Ceramic Tiling",
    "level": 4
  },
  {
    "code": "09 35 16",
    "label": "Chemical-Resistant Quarry Tiling",
    "level": 4
  },
  {
    "code": "09 35 19",
    "label": "Chemical-Resistant Paver Tiling",
    "level": 4
  },
  {
    "code": "09 35 23",
    "label": "Chemical-Resistant Glass Mosaic Tiling",
    "level": 4
  },
  {
    "code": "09 35 26",
    "label": "Chemical-Resistant Plastic Tiling",
    "level": 4
  },
  {
    "code": "09 35 29",
    "label": "Chemical-Resistant Metal Tiling",
    "level": 4
  },
  {
    "code": "09 35 33",
    "label": "Chemical-Resistant Stone Tiling",
    "level": 4
  },
  {
    "code": "09 35 36",
    "label": "Chemical-Resistant Concrete Tiling",
    "level": 4
  },
  {
    "code": "09 50 00",
    "label": "Ceilings",
    "level": 2
  },
  {
    "code": "09 51 00",
    "label": "Acoustical Ceilings",
    "level": 3
  },
  {
    "code": "09 51 13",
    "label": "Acoustical Panel Ceilings",
    "level": 4
  },
  {
    "code": "09 51 14",
    "label": "Acoustical Fabric-Faced Panel Ceilings",
    "level": 4
  },
  {
    "code": "09 51 23",
    "label": "Acoustical Tile Ceilings",
    "level": 4
  },
  {
    "code": "09 51 26",
    "label": "Acoustical Wood Ceilings",
    "level": 4
  },
  {
    "code": "09 51 33",
    "label": "Acoustical Metal Pan Ceilings",
    "level": 4
  },
  {
    "code": "09 51 33.13",
    "label": "Acoustical Snap-in Metal Pan Ceilings",
    "level": 5
  },
  {
    "code": "09 51 53",
    "label": "Direct-Applied Acoustical Ceilings",
    "level": 4
  },
  {
    "code": "09 53 00",
    "label": "Acoustical Ceiling Suspension Assemblies",
    "level": 3
  },
  {
    "code": "09 53 13",
    "label": "Curved Profile Ceiling Suspension Assemblies",
    "level": 4
  },
  {
    "code": "09 53 23",
    "label": "Metal Acoustical Ceiling Suspension Assemblies",
    "level": 4
  },
  {
    "code": "09 53 33",
    "label": "Plastic Acoustical Ceiling Suspension Assemblies",
    "level": 4
  },
  {
    "code": "09 54 00",
    "label": "Specialty Ceilings",
    "level": 3
  },
  {
    "code": "09 54 13",
    "label": "Open Metal Mesh Ceilings",
    "level": 4
  },
  {
    "code": "09 54 16",
    "label": "Luminous Ceilings",
    "level": 4
  },
  {
    "code": "09 54 19",
    "label": "Mirror Panel Ceilings",
    "level": 4
  },
  {
    "code": "09 54 23",
    "label": "Linear Metal Ceilings",
    "level": 4
  },
  {
    "code": "09 54 26",
    "label": "Suspended Wood Ceilings",
    "level": 4
  },
  {
    "code": "09 54 29",
    "label": "Suspended Plastic Ceilings",
    "level": 4
  },
  {
    "code": "09 54 33",
    "label": "Decorative Panel Ceilings",
    "level": 4
  },
  {
    "code": "09 54 36",
    "label": "Suspended Decorative Grids",
    "level": 4
  },
  {
    "code": "09 54 43",
    "label": "Stretched-Fabric Ceiling Systems",
    "level": 4
  },
  {
    "code": "09 54 46",
    "label": "Fabric-Wrapped Ceiling Panels",
    "level": 4
  },
  {
    "code": "09 54 53",
    "label": "Fiberglass Reinforced Panel Ceilings",
    "level": 4
  },
  {
    "code": "09 56 00",
    "label": "Textured Ceilings",
    "level": 3
  },
  {
    "code": "09 56 13",
    "label": "Gypsum-Panel Textured Ceilings",
    "level": 4
  },
  {
    "code": "09 56 16",
    "label": "Metal-Panel Textured Ceilings",
    "level": 4
  },
  {
    "code": "09 57 00",
    "label": "Special Function Ceilings",
    "level": 3
  },
  {
    "code": "09 57 53",
    "label": "Security Ceiling Assemblies",
    "level": 4
  },
  {
    "code": "09 58 00",
    "label": "Integrated Ceiling Assemblies",
    "level": 3
  },
  {
    "code": "09 60 00",
    "label": "Flooring",
    "level": 2
  },
  {
    "code": "09 61 00",
    "label": "Flooring Treatment",
    "level": 3
  },
  {
    "code": "09 61 13",
    "label": "Slip-Resistant Flooring Treatment",
    "level": 4
  },
  {
    "code": "09 61 19",
    "label": "Concrete Floor Staining",
    "level": 4
  },
  {
    "code": "09 61 36",
    "label": "Static-Resistant Flooring Treatment",
    "level": 4
  },
  {
    "code": "09 62 00",
    "label": "Specialty Flooring",
    "level": 3
  },
  {
    "code": "09 62 13",
    "label": "Asphaltic Plank Flooring",
    "level": 4
  },
  {
    "code": "09 62 19",
    "label": "Laminate Flooring",
    "level": 4
  },
  {
    "code": "09 62 23",
    "label": "Bamboo Flooring",
    "level": 4
  },
  {
    "code": "09 62 26",
    "label": "Leather Flooring",
    "level": 4
  },
  {
    "code": "09 62 29",
    "label": "Cork Flooring",
    "level": 4
  },
  {
    "code": "09 62 35",
    "label": "Acid-Resistant Flooring",
    "level": 4
  },
  {
    "code": "09 62 48",
    "label": "Acoustic Flooring",
    "level": 4
  },
  {
    "code": "09 62 53",
    "label": "Synthetic Turf Flooring",
    "level": 4
  },
  {
    "code": "09 62 63",
    "label": "Metal Flooring",
    "level": 4
  },
  {
    "code": "09 62 63.13",
    "label": "Aluminum Flooring",
    "level": 5
  },
  {
    "code": "09 62 63.16",
    "label": "Stainless Steel Flooring",
    "level": 5
  },
  {
    "code": "09 62 83",
    "label": "Structural Glass Flooring",
    "level": 4
  },
  {
    "code": "09 63 00",
    "label": "Masonry Flooring",
    "level": 3
  },
  {
    "code": "09 63 13",
    "label": "Brick Flooring",
    "level": 4
  },
  {
    "code": "09 63 13.35",
    "label": "Chemical-Resistant Brick Flooring",
    "level": 5
  },
  {
    "code": "09 63 40",
    "label": "Stone Flooring",
    "level": 4
  },
  {
    "code": "09 63 43",
    "label": "Composition Stone Flooring",
    "level": 4
  },
  {
    "code": "09 64 00",
    "label": "Wood Flooring",
    "level": 3
  },
  {
    "code": "09 64 16",
    "label": "Wood Block Flooring",
    "level": 4
  },
  {
    "code": "09 64 19",
    "label": "Wood Composition Flooring",
    "level": 4
  },
  {
    "code": "09 64 23",
    "label": "Wood Parquet Flooring",
    "level": 4
  },
  {
    "code": "09 64 23.13",
    "label": "Acrylic-Impregnated Wood Parquet Flooring",
    "level": 5
  },
  {
    "code": "09 64 29",
    "label": "Wood Strip and Plank Flooring",
    "level": 4
  },
  {
    "code": "09 64 33",
    "label": "Laminated Wood Flooring",
    "level": 4
  },
  {
    "code": "09 64 53",
    "label": "Resilient Wood Flooring Assemblies",
    "level": 4
  },
  {
    "code": "09 64 66",
    "label": "Wood Athletic Flooring",
    "level": 4
  },
  {
    "code": "09 65 00",
    "label": "Resilient Flooring",
    "level": 3
  },
  {
    "code": "09 65 13",
    "label": "Resilient Base and Accessories",
    "level": 4
  },
  {
    "code": "09 65 13.13",
    "label": "Resilient Base",
    "level": 5
  },
  {
    "code": "09 65 13.23",
    "label": "Resilient Stair Treads and Risers",
    "level": 5
  },
  {
    "code": "09 65 13.26",
    "label": "Resilient Stair Nosings",
    "level": 5
  },
  {
    "code": "09 65 13.33",
    "label": "Resilient Accessories",
    "level": 5
  },
  {
    "code": "09 65 13.36",
    "label": "Resilient Carpet Transitions",
    "level": 5
  },
  {
    "code": "09 65 16",
    "label": "Resilient Sheet Flooring",
    "level": 4
  },
  {
    "code": "09 65 16.23",
    "label": "Vinyl Sheet Flooring",
    "level": 5
  },
  {
    "code": "09 65 16.33",
    "label": "Rubber Sheet Flooring",
    "level": 5
  },
  {
    "code": "09 65 16.43",
    "label": "PVC-Free Sheet Flooring",
    "level": 5
  },
  {
    "code": "09 65 19",
    "label": "Resilient Tile Flooring",
    "level": 4
  },
  {
    "code": "09 65 19.19",
    "label": "Vinyl Composition Tile Flooring",
    "level": 5
  },
  {
    "code": "09 65 19.23",
    "label": "Vinyl Tile Flooring",
    "level": 5
  },
  {
    "code": "09 65 19.33",
    "label": "Rubber Tile Flooring",
    "level": 5
  },
  {
    "code": "09 65 19.43",
    "label": "Polyester Composition Tile Flooring",
    "level": 5
  },
  {
    "code": "09 65 33",
    "label": "Conductive Resilient Flooring",
    "level": 4
  },
  {
    "code": "09 65 36",
    "label": "Static-Control Resilient Flooring",
    "level": 4
  },
  {
    "code": "09 65 36.13",
    "label": "Static-Dissipative Resilient Flooring",
    "level": 5
  },
  {
    "code": "09 65 36.16",
    "label": "Static-Resistant Resilient Flooring",
    "level": 5
  },
  {
    "code": "09 65 43",
    "label": "Linoleum Flooring",
    "level": 4
  },
  {
    "code": "09 65 66",
    "label": "Resilient Athletic Flooring",
    "level": 4
  },
  {
    "code": "09 66 00",
    "label": "Terrazzo Flooring",
    "level": 3
  },
  {
    "code": "09 66 13",
    "label": "Portland Cement Terrazzo Flooring",
    "level": 4
  },
  {
    "code": "09 66 13.13",
    "label": "Sand Cushion Terrazzo Flooring",
    "level": 5
  },
  {
    "code": "09 66 13.16",
    "label": "Monolithic Terrazzo Flooring",
    "level": 5
  },
  {
    "code": "09 66 13.19",
    "label": "Bonded Terrazzo Flooring",
    "level": 5
  },
  {
    "code": "09 66 13.23",
    "label": "Palladina Terrazzo Flooring",
    "level": 5
  },
  {
    "code": "09 66 13.26",
    "label": "Rustic Terrazzo Flooring",
    "level": 5
  },
  {
    "code": "09 66 13.33",
    "label": "Structural Terrazzo Flooring",
    "level": 5
  },
  {
    "code": "09 66 16",
    "label": "Terrazzo Floor Tile",
    "level": 4
  },
  {
    "code": "09 66 16.13",
    "label": "Portland Cement Terrazzo Floor Tile",
    "level": 5
  },
  {
    "code": "09 66 16.16",
    "label": "Plastic-Matrix Terrazzo Floor Tile",
    "level": 5
  },
  {
    "code": "09 66 23",
    "label": "Resinous Matrix Terrazzo Flooring",
    "level": 4
  },
  {
    "code": "09 66 23.13",
    "label": "Polyacrylate Modified Cementitious Terrazzo Flooring",
    "level": 5
  },
  {
    "code": "09 66 23.16",
    "label": "Epoxy-Resin Terrazzo Flooring",
    "level": 5
  },
  {
    "code": "09 66 23.19",
    "label": "Polyester-Resin Terrazzo Flooring",
    "level": 5
  },
  {
    "code": "09 66 33",
    "label": "Conductive Terrazzo Flooring",
    "level": 4
  },
  {
    "code": "09 66 33.13",
    "label": "Conductive Epoxy-Resin Terrazzo",
    "level": 5
  },
  {
    "code": "09 66 33.16",
    "label": "Conductive Polyester-Resin Terrazzo Flooring",
    "level": 5
  },
  {
    "code": "09 66 33.19",
    "label": "Conductive Plastic-Matrix Terrazzo Flooring",
    "level": 5
  },
  {
    "code": "09 67 00",
    "label": "Fluid-Applied Flooring",
    "level": 3
  },
  {
    "code": "09 67 13",
    "label": "Elastomeric Liquid Flooring",
    "level": 4
  },
  {
    "code": "09 67 13.33",
    "label": "Conductive Elastomeric Liquid Flooring",
    "level": 5
  },
  {
    "code": "09 67 16",
    "label": "Epoxy-Marble Chip Flooring",
    "level": 4
  },
  {
    "code": "09 67 19",
    "label": "Magnesium-Oxychloride Flooring",
    "level": 4
  },
  {
    "code": "09 67 23",
    "label": "Resinous Flooring",
    "level": 4
  },
  {
    "code": "09 67 26",
    "label": "Quartz Flooring",
    "level": 4
  },
  {
    "code": "09 67 66",
    "label": "Fluid-Applied Athletic Flooring",
    "level": 4
  },
  {
    "code": "09 68 00",
    "label": "Carpeting",
    "level": 3
  },
  {
    "code": "09 68 13",
    "label": "Tile Carpeting",
    "level": 4
  },
  {
    "code": "09 68 16",
    "label": "Sheet Carpeting",
    "level": 4
  },
  {
    "code": "09 69 00",
    "label": "Access Flooring",
    "level": 3
  },
  {
    "code": "09 69 13",
    "label": "Rigid-Grid Access Flooring",
    "level": 4
  },
  {
    "code": "09 69 16",
    "label": "Snap-on Stringer Access Flooring",
    "level": 4
  },
  {
    "code": "09 69 19",
    "label": "Stringerless Access Flooring",
    "level": 4
  },
  {
    "code": "09 69 33",
    "label": "Low-Profile Fixed Height Access Flooring",
    "level": 4
  },
  {
    "code": "09 69 53",
    "label": "Access Flooring Accessories",
    "level": 4
  },
  {
    "code": "09 69 56",
    "label": "Access Flooring Stairs and Stringers",
    "level": 4
  },
  {
    "code": "09 70 00",
    "label": "Wall Finishes",
    "level": 2
  },
  {
    "code": "09 72 00",
    "label": "Wall Coverings",
    "level": 3
  },
  {
    "code": "09 72 13",
    "label": "Cork Wall Coverings",
    "level": 4
  },
  {
    "code": "09 72 16",
    "label": "Vinyl-Coated Fabric Wall Coverings",
    "level": 4
  },
  {
    "code": "09 72 16.13",
    "label": "Flexible Vinyl Wall Coverings",
    "level": 5
  },
  {
    "code": "09 72 16.16",
    "label": "Rigid-Sheet Vinyl Wall Coverings",
    "level": 5
  },
  {
    "code": "09 72 19",
    "label": "Textile Wall Coverings",
    "level": 4
  },
  {
    "code": "09 72 23",
    "label": "Wallpapering",
    "level": 4
  },
  {
    "code": "09 73 00",
    "label": "Wall Carpeting",
    "level": 3
  },
  {
    "code": "09 74 00",
    "label": "Flexible Wood Sheets",
    "level": 3
  },
  {
    "code": "09 74 13",
    "label": "Wood Wall Coverings",
    "level": 4
  },
  {
    "code": "09 74 16",
    "label": "Flexible Wood Veneers",
    "level": 4
  },
  {
    "code": "09 75 00",
    "label": "Stone Facing",
    "level": 3
  },
  {
    "code": "09 75 13",
    "label": "Stone Wall Facing",
    "level": 4
  },
  {
    "code": "09 75 19",
    "label": "Stone Trim",
    "level": 4
  },
  {
    "code": "09 75 19.13",
    "label": "Stone Base",
    "level": 5
  },
  {
    "code": "09 75 19.23",
    "label": "Stone Window Stools",
    "level": 5
  },
  {
    "code": "09 75 23",
    "label": "Simulated Stone Wall Facing",
    "level": 4
  },
  {
    "code": "09 76 00",
    "label": "Plastic Blocks",
    "level": 3
  },
  {
    "code": "09 77 00",
    "label": "Special Wall Surfacing",
    "level": 3
  },
  {
    "code": "09 77 13",
    "label": "Stretched-Fabric Wall Systems",
    "level": 4
  },
  {
    "code": "09 77 23",
    "label": "Fabric-Wrapped Panels",
    "level": 4
  },
  {
    "code": "09 77 33",
    "label": "Terrazzo Wall Finish",
    "level": 4
  },
  {
    "code": "09 77 53",
    "label": "Vegetated Wall Systems",
    "level": 4
  },
  {
    "code": "09 78 00",
    "label": "Interior Wall Paneling",
    "level": 3
  },
  {
    "code": "09 78 13",
    "label": "Metal Interior Wall Paneling",
    "level": 4
  },
  {
    "code": "09 78 16",
    "label": "Stone-Faced Interior Wall Paneling",
    "level": 4
  },
  {
    "code": "09 78 19",
    "label": "Cementitious Interior Wall Paneling",
    "level": 4
  },
  {
    "code": "09 78 23",
    "label": "Phenolic Interior Wall Paneling",
    "level": 4
  },
  {
    "code": "09 80 00",
    "label": "Acoustic Treatment",
    "level": 2
  },
  {
    "code": "09 81 00",
    "label": "Acoustic Insulation",
    "level": 3
  },
  {
    "code": "09 81 13",
    "label": "Acoustic Board Insulation",
    "level": 4
  },
  {
    "code": "09 81 16",
    "label": "Acoustic Blanket Insulation",
    "level": 4
  },
  {
    "code": "09 81 29",
    "label": "Sprayed Acoustic Insulation",
    "level": 4
  },
  {
    "code": "09 83 00",
    "label": "Acoustic Finishes",
    "level": 3
  },
  {
    "code": "09 83 13",
    "label": "Acoustic Wall Coating",
    "level": 4
  },
  {
    "code": "09 83 16",
    "label": "Acoustic Ceiling Coating",
    "level": 4
  },
  {
    "code": "09 83 22",
    "label": "Acoustic Drapery",
    "level": 4
  },
  {
    "code": "09 84 00",
    "label": "Acoustic Room Components",
    "level": 3
  },
  {
    "code": "09 84 13",
    "label": "Fixed Sound-Absorptive Panels",
    "level": 4
  },
  {
    "code": "09 84 14",
    "label": "Acoustic Stretched-Fabric Wall Systems",
    "level": 4
  },
  {
    "code": "09 84 16",
    "label": "Fixed Sound-Reflective Panels",
    "level": 4
  },
  {
    "code": "09 84 23",
    "label": "Moveable Sound-Absorptive Panels",
    "level": 4
  },
  {
    "code": "09 84 26",
    "label": "Moveable Sound-Reflective Panels",
    "level": 4
  },
  {
    "code": "09 84 33",
    "label": "Sound-Absorbing Wall Units",
    "level": 4
  },
  {
    "code": "09 84 36",
    "label": "Sound-Absorbing Ceiling Units",
    "level": 4
  },
  {
    "code": "09 90 00",
    "label": "Painting and Coating",
    "level": 2
  },
  {
    "code": "09 91 00",
    "label": "Painting",
    "level": 3
  },
  {
    "code": "09 91 13",
    "label": "Exterior Painting",
    "level": 4
  },
  {
    "code": "09 91 23",
    "label": "Interior Painting",
    "level": 4
  },
  {
    "code": "09 93 00",
    "label": "Staining and Transparent Finishing",
    "level": 3
  },
  {
    "code": "09 93 13",
    "label": "Exterior Staining and Finishing",
    "level": 4
  },
  {
    "code": "09 93 13.13",
    "label": "Exterior Staining",
    "level": 5
  },
  {
    "code": "09 93 13.53",
    "label": "Exterior Finishing",
    "level": 5
  },
  {
    "code": "09 93 23",
    "label": "Interior Staining and Finishing",
    "level": 4
  },
  {
    "code": "09 93 23.13",
    "label": "Interior Staining",
    "level": 5
  },
  {
    "code": "09 93 23.53",
    "label": "Interior Finishing",
    "level": 5
  },
  {
    "code": "09 94 00",
    "label": "Decorative Finishing",
    "level": 3
  },
  {
    "code": "09 94 13",
    "label": "Textured Finishing",
    "level": 4
  },
  {
    "code": "09 94 16",
    "label": "Faux Finishing",
    "level": 4
  },
  {
    "code": "09 94 19",
    "label": "Multicolor Interior Finishing",
    "level": 4
  },
  {
    "code": "09 94 23",
    "label": "Gilding",
    "level": 4
  },
  {
    "code": "09 96 00",
    "label": "High-Performance Coatings",
    "level": 3
  },
  {
    "code": "09 96 13",
    "label": "Abrasion-Resistant Coatings",
    "level": 4
  },
  {
    "code": "09 96 23",
    "label": "Graffiti-Resistant Coatings",
    "level": 4
  },
  {
    "code": "09 96 26",
    "label": "Marine Coatings",
    "level": 4
  },
  {
    "code": "09 96 33",
    "label": "High-Temperature-Resistant Coatings",
    "level": 4
  },
  {
    "code": "09 96 35",
    "label": "Chemical-Resistant Coatings",
    "level": 4
  },
  {
    "code": "09 96 43",
    "label": "Fire-Retardant Coatings",
    "level": 4
  },
  {
    "code": "09 96 46",
    "label": "Intumescent Painting",
    "level": 4
  },
  {
    "code": "09 96 53",
    "label": "Elastomeric Coatings",
    "level": 4
  },
  {
    "code": "09 96 56",
    "label": "Epoxy Coatings",
    "level": 4
  },
  {
    "code": "09 96 59",
    "label": "High-Build Glazed Coatings",
    "level": 4
  },
  {
    "code": "09 96 63",
    "label": "Textured Plastic Coatings",
    "level": 4
  },
  {
    "code": "09 96 66",
    "label": "Aggregate Wall Coatings",
    "level": 4
  },
  {
    "code": "09 97 00",
    "label": "Special Coatings",
    "level": 3
  },
  {
    "code": "09 97 13",
    "label": "Steel Coatings",
    "level": 4
  },
  {
    "code": "09 97 13.13",
    "label": "Interior Steel Coatings",
    "level": 5
  },
  {
    "code": "09 97 13.23",
    "label": "Exterior Steel Coatings",
    "level": 5
  },
  {
    "code": "09 97 13.24",
    "label": "Steel Water Storage Tank Painting",
    "level": 5
  },
  {
    "code": "09 97 23",
    "label": "Concrete and Masonry Coatings",
    "level": 4
  },
  {
    "code": "09 97 23.24",
    "label": "Concrete Water Storage Tank Painting",
    "level": 5
  },
  {
    "code": "09 97 26",
    "label": "Cementitious Coatings",
    "level": 4
  },
  {
    "code": "09 97 26.13",
    "label": "Interior Cementitious Coatings",
    "level": 5
  },
  {
    "code": "09 97 26.23",
    "label": "Exterior Cementitious Coatings",
    "level": 5
  },
  {
    "code": "09 97 35",
    "label": "Dry Erase Coatings",
    "level": 4
  },
  {
    "code": "10 00 00",
    "label": "Specialties",
    "level": 1
  },
  {
    "code": "10 01 00",
    "label": "Operation and Maintenance of Specialties",
    "level": 3
  },
  {
    "code": "10 01 10",
    "label": "Operation and Maintenance of Information Specialties",
    "level": 4
  },
  {
    "code": "10 01 20",
    "label": "Operation and Maintenance of Interior Specialties",
    "level": 4
  },
  {
    "code": "10 01 30",
    "label": "Operation and Maintenance of Fireplaces and Stoves",
    "level": 4
  },
  {
    "code": "10 01 40",
    "label": "Operation and Maintenance of Safety Specialties",
    "level": 4
  },
  {
    "code": "10 01 50",
    "label": "Operation and Maintenance of Storage Specialties",
    "level": 4
  },
  {
    "code": "10 01 70",
    "label": "Operation and Maintenance of Exterior Specialties",
    "level": 4
  },
  {
    "code": "10 01 80",
    "label": "Operation and Maintenance of Other Specialties",
    "level": 4
  },
  {
    "code": "10 05 00",
    "label": "Common Work Results for Specialties",
    "level": 3
  },
  {
    "code": "10 05 05",
    "label": "Selective Demolition for Specialties",
    "level": 4
  },
  {
    "code": "10 06 00",
    "label": "Schedules for Specialties",
    "level": 3
  },
  {
    "code": "10 06 10",
    "label": "Schedules for Information Specialties",
    "level": 4
  },
  {
    "code": "10 06 10.13",
    "label": "Exterior Signage Schedule",
    "level": 5
  },
  {
    "code": "10 06 10.16",
    "label": "Interior Signage Schedule",
    "level": 5
  },
  {
    "code": "10 06 20",
    "label": "Schedules for Interior Specialties",
    "level": 4
  },
  {
    "code": "10 06 20.13",
    "label": "Toilet, Bath, and Laundry Accessory Schedule",
    "level": 5
  },
  {
    "code": "10 06 30",
    "label": "Schedules for Fireplaces and Stoves",
    "level": 4
  },
  {
    "code": "10 06 40",
    "label": "Schedules for Safety Specialties",
    "level": 4
  },
  {
    "code": "10 06 50",
    "label": "Schedules for Storage Specialties",
    "level": 4
  },
  {
    "code": "10 06 70",
    "label": "Schedules for Exterior Specialties",
    "level": 4
  },
  {
    "code": "10 06 80",
    "label": "Schedules for Other Specialties",
    "level": 4
  },
  {
    "code": "10 08 00",
    "label": "Commissioning of Specialties",
    "level": 3
  },
  {
    "code": "10 10 00",
    "label": "Information Specialties",
    "level": 2
  },
  {
    "code": "10 11 00",
    "label": "Visual Display Units",
    "level": 3
  },
  {
    "code": "10 11 13",
    "label": "Chalkboards",
    "level": 4
  },
  {
    "code": "10 11 13.13",
    "label": "Fixed Chalkboards",
    "level": 5
  },
  {
    "code": "10 11 13.23",
    "label": "Modular-Support-Mounted Chalkboards",
    "level": 5
  },
  {
    "code": "10 11 13.33",
    "label": "Rail-Mounted Chalkboards",
    "level": 5
  },
  {
    "code": "10 11 13.43",
    "label": "Portable Chalkboards",
    "level": 5
  },
  {
    "code": "10 11 16",
    "label": "Markerboards",
    "level": 4
  },
  {
    "code": "10 11 16.13",
    "label": "Fixed Markerboards",
    "level": 5
  },
  {
    "code": "10 11 16.23",
    "label": "Modular-Support-Mounted Markerboards",
    "level": 5
  },
  {
    "code": "10 11 16.33",
    "label": "Rail-Mounted Markerboards",
    "level": 5
  },
  {
    "code": "10 11 16.43",
    "label": "Portable Markerboards",
    "level": 5
  },
  {
    "code": "10 11 16.53",
    "label": "Electronic Markerboards",
    "level": 5
  },
  {
    "code": "10 11 23",
    "label": "Tackboards",
    "level": 4
  },
  {
    "code": "10 11 23.13",
    "label": "Fixed Tackboards",
    "level": 5
  },
  {
    "code": "10 11 23.23",
    "label": "Modular-Support-Mounted Tackboards",
    "level": 5
  },
  {
    "code": "10 11 23.33",
    "label": "Rail-Mounted Tackboards",
    "level": 5
  },
  {
    "code": "10 11 23.43",
    "label": "Portable Tackboards",
    "level": 5
  },
  {
    "code": "10 11 33",
    "label": "Sliding Visual Display Units",
    "level": 4
  },
  {
    "code": "10 11 33.13",
    "label": "Horizontal-Sliding Visual Display Units",
    "level": 5
  },
  {
    "code": "10 11 33.23",
    "label": "Vertical-Sliding Visual Display Units",
    "level": 5
  },
  {
    "code": "10 11 36",
    "label": "Visual Display Conference Units",
    "level": 4
  },
  {
    "code": "10 11 39",
    "label": "Visual Display Rails",
    "level": 4
  },
  {
    "code": "10 11 43",
    "label": "Visual Display Wall Panels",
    "level": 4
  },
  {
    "code": "10 11 46",
    "label": "Visual Display Fabrics",
    "level": 4
  },
  {
    "code": "10 12 00",
    "label": "Display Cases",
    "level": 3
  },
  {
    "code": "10 13 00",
    "label": "Directories",
    "level": 3
  },
  {
    "code": "10 13 13",
    "label": "Electronic Directories",
    "level": 4
  },
  {
    "code": "10 13 23",
    "label": "Illuminated Directories",
    "level": 4
  },
  {
    "code": "10 14 00",
    "label": "Signage",
    "level": 3
  },
  {
    "code": "10 14 16",
    "label": "Plaques",
    "level": 4
  },
  {
    "code": "10 14 19",
    "label": "Dimensional Letter Signage",
    "level": 4
  },
  {
    "code": "10 14 23",
    "label": "Panel Signage",
    "level": 4
  },
  {
    "code": "10 14 23.13",
    "label": "Engraved Panel Signage",
    "level": 5
  },
  {
    "code": "10 14 26",
    "label": "Post and Panel/Pylon Signage",
    "level": 4
  },
  {
    "code": "10 14 33",
    "label": "Illuminated Panel Signage",
    "level": 4
  },
  {
    "code": "10 14 43",
    "label": "Photoluminescent Signage",
    "level": 4
  },
  {
    "code": "10 14 53",
    "label": "Traffic Signage",
    "level": 4
  },
  {
    "code": "10 14 53.13",
    "label": "Transportation Reference Markers",
    "level": 5
  },
  {
    "code": "10 14 63",
    "label": "Electronic Message Signage",
    "level": 4
  },
  {
    "code": "10 14 64",
    "label": "Audible Signage",
    "level": 4
  },
  {
    "code": "10 14 66",
    "label": "Floating Signage",
    "level": 4
  },
  {
    "code": "10 14 67",
    "label": "Tactile Signage",
    "level": 4
  },
  {
    "code": "10 17 00",
    "label": "Telephone Specialties",
    "level": 3
  },
  {
    "code": "10 17 13",
    "label": "Telephone Directory Units",
    "level": 4
  },
  {
    "code": "10 17 16",
    "label": "Telephone Enclosures",
    "level": 4
  },
  {
    "code": "10 17 16.13",
    "label": "Telephone Stalls",
    "level": 5
  },
  {
    "code": "10 17 16.16",
    "label": "Telephone Alcoves",
    "level": 5
  },
  {
    "code": "10 17 19",
    "label": "Telephone Shelving",
    "level": 4
  },
  {
    "code": "10 18 00",
    "label": "Informational Kiosks",
    "level": 3
  },
  {
    "code": "10 20 00",
    "label": "Interior Specialties",
    "level": 2
  },
  {
    "code": "10 21 00",
    "label": "Compartments and Cubicles",
    "level": 3
  },
  {
    "code": "10 21 13",
    "label": "Toilet Compartments",
    "level": 4
  },
  {
    "code": "10 21 13.13",
    "label": "Metal Toilet Compartments",
    "level": 5
  },
  {
    "code": "10 21 13.14",
    "label": "Stainless-Steel Toilet Compartments",
    "level": 5
  },
  {
    "code": "10 21 13.16",
    "label": "Plastic-Laminate-Clad Toilet Compartments",
    "level": 5
  },
  {
    "code": "10 21 13.17",
    "label": "Phenolic-Core Toilet Compartments",
    "level": 5
  },
  {
    "code": "10 21 13.19",
    "label": "Plastic Toilet Compartments",
    "level": 5
  },
  {
    "code": "10 21 13.23",
    "label": "Particleboard Toilet Compartments",
    "level": 5
  },
  {
    "code": "10 21 13.40",
    "label": "Stone Toilet Compartments",
    "level": 5
  },
  {
    "code": "10 21 16",
    "label": "Shower and Dressing Compartments",
    "level": 4
  },
  {
    "code": "10 21 16.13",
    "label": "Metal Shower and Dressing Compartments",
    "level": 5
  },
  {
    "code": "10 21 16.14",
    "label": "Stainless-Steel Shower and Dressing Compartments",
    "level": 5
  },
  {
    "code": "10 21 16.16",
    "label": "Plastic-Laminate-Clad Shower and Dressing Compartments",
    "level": 5
  },
  {
    "code": "10 21 16.17",
    "label": "Phenolic-Core Shower and Dressing Compartments",
    "level": 5
  },
  {
    "code": "10 21 16.19",
    "label": "Plastic Shower and Dressing Compartments",
    "level": 5
  },
  {
    "code": "10 21 16.23",
    "label": "Particleboard Shower and Dressing Compartments",
    "level": 5
  },
  {
    "code": "10 21 16.40",
    "label": "Stone Shower and Dressing Compartments",
    "level": 5
  },
  {
    "code": "10 21 23",
    "label": "Cubicle Curtains and Track",
    "level": 4
  },
  {
    "code": "10 21 23.13",
    "label": "Cubicle Curtains",
    "level": 5
  },
  {
    "code": "10 21 23.16",
    "label": "Cubicle Track and Hardware",
    "level": 5
  },
  {
    "code": "10 21 26",
    "label": "Room Darkening Curtains and Tracks",
    "level": 4
  },
  {
    "code": "10 22 00",
    "label": "Partitions",
    "level": 3
  },
  {
    "code": "10 22 13",
    "label": "Wire Mesh Partitions",
    "level": 4
  },
  {
    "code": "10 22 14",
    "label": "Expanded Metal Partitions",
    "level": 4
  },
  {
    "code": "10 22 16",
    "label": "Folding Gates",
    "level": 4
  },
  {
    "code": "10 22 19",
    "label": "Demountable Partitions",
    "level": 4
  },
  {
    "code": "10 22 19.13",
    "label": "Demountable Metal Partitions",
    "level": 5
  },
  {
    "code": "10 22 19.23",
    "label": "Demountable Wood Partitions",
    "level": 5
  },
  {
    "code": "10 22 19.33",
    "label": "Demountable Plastic Partitions",
    "level": 5
  },
  {
    "code": "10 22 19.43",
    "label": "Demountable Composite Partitions",
    "level": 5
  },
  {
    "code": "10 22 19.53",
    "label": "Demountable Gypsum Partitions",
    "level": 5
  },
  {
    "code": "10 22 23",
    "label": "Portable Partitions, Screens, and Panels",
    "level": 4
  },
  {
    "code": "10 22 23.13",
    "label": "Wall Screens",
    "level": 5
  },
  {
    "code": "10 22 23.23",
    "label": "Movable Panel Systems",
    "level": 5
  },
  {
    "code": "10 22 33",
    "label": "Accordion Folding Partitions",
    "level": 4
  },
  {
    "code": "10 22 36",
    "label": "Coiling Partitions",
    "level": 4
  },
  {
    "code": "10 22 39",
    "label": "Folding Panel Partitions",
    "level": 4
  },
  {
    "code": "10 22 39.13",
    "label": "Folding Glass-Panel Partitions",
    "level": 5
  },
  {
    "code": "10 22 43",
    "label": "Sliding Partitions",
    "level": 4
  },
  {
    "code": "10 25 00",
    "label": "Service Walls",
    "level": 3
  },
  {
    "code": "10 25 13",
    "label": "Patient Bed Service Walls",
    "level": 4
  },
  {
    "code": "10 25 16",
    "label": "Modular Service Walls",
    "level": 4
  },
  {
    "code": "10 26 00",
    "label": "Wall and Door Protection",
    "level": 3
  },
  {
    "code": "10 26 13",
    "label": "Corner Guards",
    "level": 4
  },
  {
    "code": "10 26 16",
    "label": "Bumper Guards",
    "level": 4
  },
  {
    "code": "10 26 16.13",
    "label": "Bumper Rails",
    "level": 5
  },
  {
    "code": "10 26 16.16",
    "label": "Protective Corridor Handrails",
    "level": 5
  },
  {
    "code": "10 26 23",
    "label": "Protective Wall Covering",
    "level": 4
  },
  {
    "code": "10 26 23.13",
    "label": "Impact Resistant Wall Protection",
    "level": 5
  },
  {
    "code": "10 26 23.16",
    "label": "Fiberglass Reinforced Protective Wall Covering",
    "level": 5
  },
  {
    "code": "10 26 33",
    "label": "Door and Frame Protection",
    "level": 4
  },
  {
    "code": "10 26 41",
    "label": "Bullet Resistant Panels",
    "level": 4
  },
  {
    "code": "10 28 00",
    "label": "Toilet, Bath, and Laundry Accessories",
    "level": 3
  },
  {
    "code": "10 28 13",
    "label": "Toilet Accessories",
    "level": 4
  },
  {
    "code": "10 28 13.13",
    "label": "Commercial Toilet Accessories",
    "level": 5
  },
  {
    "code": "10 28 13.19",
    "label": "Healthcare Toilet Accessories",
    "level": 5
  },
  {
    "code": "10 28 13.53",
    "label": "Security Toilet Accessories",
    "level": 5
  },
  {
    "code": "10 28 13.63",
    "label": "Detention Toilet Accessories",
    "level": 5
  },
  {
    "code": "10 28 16",
    "label": "Bath Accessories",
    "level": 4
  },
  {
    "code": "10 28 16.13",
    "label": "Residential Bath Accessories",
    "level": 5
  },
  {
    "code": "10 28 19",
    "label": "Tub and Shower Enclosures",
    "level": 4
  },
  {
    "code": "10 28 19.16",
    "label": "Shower Doors",
    "level": 5
  },
  {
    "code": "10 28 19.19",
    "label": "Tub Doors",
    "level": 5
  },
  {
    "code": "10 28 23",
    "label": "Laundry Accessories",
    "level": 4
  },
  {
    "code": "10 28 23.13",
    "label": "Built-In Ironing Boards",
    "level": 5
  },
  {
    "code": "10 28 23.16",
    "label": "Clothes Drying Racks",
    "level": 5
  },
  {
    "code": "10 28 26",
    "label": "Hygiene and Custodial Accessories",
    "level": 4
  },
  {
    "code": "10 30 00",
    "label": "Fireplaces and Stoves",
    "level": 2
  },
  {
    "code": "10 31 00",
    "label": "Manufactured Fireplaces",
    "level": 3
  },
  {
    "code": "10 31 13",
    "label": "Manufactured Fireplace Chimneys",
    "level": 4
  },
  {
    "code": "10 31 16",
    "label": "Manufactured Fireplace Forms",
    "level": 4
  },
  {
    "code": "10 32 00",
    "label": "Fireplace Specialties",
    "level": 3
  },
  {
    "code": "10 32 13",
    "label": "Fireplace Dampers",
    "level": 4
  },
  {
    "code": "10 32 16",
    "label": "Fireplace Inserts",
    "level": 4
  },
  {
    "code": "10 32 19",
    "label": "Fireplace Screens",
    "level": 4
  },
  {
    "code": "10 32 23",
    "label": "Fireplace Doors",
    "level": 4
  },
  {
    "code": "10 32 26",
    "label": "Fireplace Water Heaters",
    "level": 4
  },
  {
    "code": "10 35 00",
    "label": "Stoves",
    "level": 3
  },
  {
    "code": "10 35 13",
    "label": "Heating Stoves",
    "level": 4
  },
  {
    "code": "10 35 23",
    "label": "Cooking Stoves",
    "level": 4
  },
  {
    "code": "10 40 00",
    "label": "Safety Specialties",
    "level": 2
  },
  {
    "code": "10 41 00",
    "label": "Emergency Access and Information Cabinets",
    "level": 3
  },
  {
    "code": "10 41 13",
    "label": "Fire Department Plan Cabinets",
    "level": 4
  },
  {
    "code": "10 41 16",
    "label": "Emergency Key Cabinets",
    "level": 4
  },
  {
    "code": "10 43 00",
    "label": "Emergency Aid Specialties",
    "level": 3
  },
  {
    "code": "10 43 13",
    "label": "Defibrillator Cabinets",
    "level": 4
  },
  {
    "code": "10 43 16",
    "label": "First Aid Cabinets",
    "level": 4
  },
  {
    "code": "10 43 21",
    "label": "Accessibility Evacuation Chairs",
    "level": 4
  },
  {
    "code": "10 43 31",
    "label": "Respiration Equipment",
    "level": 4
  },
  {
    "code": "10 43 33",
    "label": "Breathing Air Replenishment Systems",
    "level": 4
  },
  {
    "code": "10 44 00",
    "label": "Fire Protection Specialties",
    "level": 3
  },
  {
    "code": "10 44 13",
    "label": "Fire Protection Cabinets",
    "level": 4
  },
  {
    "code": "10 44 13.53",
    "label": "Security Fire Extinguisher Cabinets",
    "level": 5
  },
  {
    "code": "10 44 16",
    "label": "Fire Extinguishers",
    "level": 4
  },
  {
    "code": "10 44 16.13",
    "label": "Portable Fire Extinguishers",
    "level": 5
  },
  {
    "code": "10 44 16.16",
    "label": "Wheeled Fire Extinguisher Units",
    "level": 5
  },
  {
    "code": "10 44 19",
    "label": "Fire Blankets",
    "level": 4
  },
  {
    "code": "10 44 43",
    "label": "Fire Extinguisher Accessories",
    "level": 4
  },
  {
    "code": "10 45 00",
    "label": "Photoluminescent Exit Specialties",
    "level": 3
  },
  {
    "code": "10 50 00",
    "label": "Storage Specialties",
    "level": 2
  },
  {
    "code": "10 51 00",
    "label": "Lockers",
    "level": 3
  },
  {
    "code": "10 51 13",
    "label": "Metal Lockers",
    "level": 4
  },
  {
    "code": "10 51 13.13",
    "label": "Coin-Operated Metal Lockers",
    "level": 5
  },
  {
    "code": "10 51 16",
    "label": "Wood Lockers",
    "level": 4
  },
  {
    "code": "10 51 23",
    "label": "Plastic-Laminate-Clad Lockers",
    "level": 4
  },
  {
    "code": "10 51 26",
    "label": "Plastic Lockers",
    "level": 4
  },
  {
    "code": "10 51 26.13",
    "label": "Recycled Plastic Lockers",
    "level": 5
  },
  {
    "code": "10 51 29",
    "label": "Phenolic Lockers",
    "level": 4
  },
  {
    "code": "10 51 33",
    "label": "Glass Lockers",
    "level": 4
  },
  {
    "code": "10 51 43",
    "label": "Wire Mesh Storage Lockers",
    "level": 4
  },
  {
    "code": "10 51 53",
    "label": "Locker Room Benches",
    "level": 4
  },
  {
    "code": "10 55 00",
    "label": "Postal Specialties",
    "level": 3
  },
  {
    "code": "10 55 13",
    "label": "Central Mail Delivery Boxes",
    "level": 4
  },
  {
    "code": "10 55 13.13",
    "label": "Cluster Box Units",
    "level": 5
  },
  {
    "code": "10 55 16",
    "label": "Mail Collection Boxes",
    "level": 4
  },
  {
    "code": "10 55 19",
    "label": "Receiving Boxes",
    "level": 4
  },
  {
    "code": "10 55 23",
    "label": "Mail Boxes",
    "level": 4
  },
  {
    "code": "10 55 23.13",
    "label": "Apartment Mail Boxes",
    "level": 5
  },
  {
    "code": "10 55 23.16",
    "label": "Mail Box Directories",
    "level": 5
  },
  {
    "code": "10 55 23.19",
    "label": "Mail Box Key Keepers",
    "level": 5
  },
  {
    "code": "10 55 26",
    "label": "Parcel Lockers",
    "level": 4
  },
  {
    "code": "10 55 33",
    "label": "Data Distribution Boxes",
    "level": 4
  },
  {
    "code": "10 55 36",
    "label": "Package Depositories",
    "level": 4
  },
  {
    "code": "10 55 91",
    "label": "Mail Chutes",
    "level": 4
  },
  {
    "code": "10 56 00",
    "label": "Storage Assemblies",
    "level": 3
  },
  {
    "code": "10 56 13",
    "label": "Metal Storage Shelving",
    "level": 4
  },
  {
    "code": "10 56 13.13",
    "label": "End-Panel-Support Metal Storage Shelving",
    "level": 5
  },
  {
    "code": "10 56 13.16",
    "label": "Post-and-Shelf Metal Storage Shelving",
    "level": 5
  },
  {
    "code": "10 56 13.19",
    "label": "Post-and-Beam Metal Storage Shelving",
    "level": 5
  },
  {
    "code": "10 56 13.23",
    "label": "Cantilever Metal Storage Shelving",
    "level": 5
  },
  {
    "code": "10 56 16",
    "label": "Fabricated Wood Storage Shelving",
    "level": 4
  },
  {
    "code": "10 56 17",
    "label": "Wall-Mounted Standards and Shelving",
    "level": 4
  },
  {
    "code": "10 56 19",
    "label": "Plastic Storage Shelving",
    "level": 4
  },
  {
    "code": "10 56 19.13",
    "label": "Recycled Plastic Storage Shelving",
    "level": 5
  },
  {
    "code": "10 56 23",
    "label": "Wire Storage Shelving",
    "level": 4
  },
  {
    "code": "10 56 26",
    "label": "Mobile Storage Shelving",
    "level": 4
  },
  {
    "code": "10 56 26.13",
    "label": "Manual Mobile Storage Shelving",
    "level": 5
  },
  {
    "code": "10 56 26.23",
    "label": "Motorized Mobile Storage Shelving",
    "level": 5
  },
  {
    "code": "10 56 29",
    "label": "Storage Racks",
    "level": 4
  },
  {
    "code": "10 56 29.13",
    "label": "Flow Storage Racks",
    "level": 5
  },
  {
    "code": "10 56 29.16",
    "label": "Pallet Storage Racks",
    "level": 5
  },
  {
    "code": "10 56 29.19",
    "label": "Movable-Shelf Storage Racks",
    "level": 5
  },
  {
    "code": "10 56 29.23",
    "label": "Stacker Storage Racks",
    "level": 5
  },
  {
    "code": "10 56 29.26",
    "label": "Cantilever Storage Racks",
    "level": 5
  },
  {
    "code": "10 56 29.29",
    "label": "Drive-In Storage Racks",
    "level": 5
  },
  {
    "code": "10 56 29.33",
    "label": "Drive-Through Storage Racks",
    "level": 5
  },
  {
    "code": "10 56 29.43",
    "label": "Wine Storage Racks",
    "level": 5
  },
  {
    "code": "10 56 33",
    "label": "Mercantile Storage Assemblies",
    "level": 4
  },
  {
    "code": "10 57 00",
    "label": "Wardrobe and Closet Specialties",
    "level": 3
  },
  {
    "code": "10 57 13",
    "label": "Hat and Coat Racks",
    "level": 4
  },
  {
    "code": "10 57 16",
    "label": "Boot Racks",
    "level": 4
  },
  {
    "code": "10 57 23",
    "label": "Closet and Utility Shelving",
    "level": 4
  },
  {
    "code": "10 57 23.13",
    "label": "Wire Closet and Utility Shelving",
    "level": 5
  },
  {
    "code": "10 57 23.16",
    "label": "Plastic-Laminate-Clad Closet and Utility Shelving",
    "level": 5
  },
  {
    "code": "10 57 23.19",
    "label": "Wood Closet and Utility Shelving",
    "level": 5
  },
  {
    "code": "10 57 33",
    "label": "Closet and Utility Shelving Hardware",
    "level": 4
  },
  {
    "code": "10 57 36",
    "label": "Closet Doors",
    "level": 4
  },
  {
    "code": "10 57 36.13",
    "label": "Sliding Closet Doors",
    "level": 5
  },
  {
    "code": "10 57 36.16",
    "label": "Bifold Closet Doors",
    "level": 5
  },
  {
    "code": "10 70 00",
    "label": "Exterior Specialties",
    "level": 2
  },
  {
    "code": "10 71 00",
    "label": "Exterior Protection",
    "level": 3
  },
  {
    "code": "10 71 13",
    "label": "Exterior Sun Control Devices",
    "level": 4
  },
  {
    "code": "10 71 13.13",
    "label": "Exterior Shutters",
    "level": 5
  },
  {
    "code": "10 71 13.19",
    "label": "Rolling Exterior Shutters",
    "level": 5
  },
  {
    "code": "10 71 13.23",
    "label": "Coiling Exterior Shutters",
    "level": 5
  },
  {
    "code": "10 71 13.26",
    "label": "Decorative Exterior Shutters",
    "level": 5
  },
  {
    "code": "10 71 13.29",
    "label": "Side-Hinged Exterior Shutters",
    "level": 5
  },
  {
    "code": "10 71 13.43",
    "label": "Fixed Sun Screens",
    "level": 5
  },
  {
    "code": "10 71 13.53",
    "label": "Exterior Daylighting Devices",
    "level": 5
  },
  {
    "code": "10 71 16",
    "label": "Storm Panels",
    "level": 4
  },
  {
    "code": "10 71 16.13",
    "label": "Demountable Storm Panels",
    "level": 5
  },
  {
    "code": "10 71 16.16",
    "label": "Movable Storm Panels",
    "level": 5
  },
  {
    "code": "10 71 19",
    "label": "Flood Barriers",
    "level": 4
  },
  {
    "code": "10 71 19.16",
    "label": "Removable Flood Barriers",
    "level": 5
  },
  {
    "code": "10 73 00",
    "label": "Protective Covers",
    "level": 3
  },
  {
    "code": "10 73 13",
    "label": "Awnings",
    "level": 4
  },
  {
    "code": "10 73 13.13",
    "label": "Metal Awnings",
    "level": 5
  },
  {
    "code": "10 73 13.23",
    "label": "Fabric Awnings",
    "level": 5
  },
  {
    "code": "10 73 13.36",
    "label": "Point Supported Glass Awnings",
    "level": 5
  },
  {
    "code": "10 73 16",
    "label": "Canopies",
    "level": 4
  },
  {
    "code": "10 73 16.13",
    "label": "Metal Canopies",
    "level": 5
  },
  {
    "code": "10 73 16.23",
    "label": "Fabric Canopies",
    "level": 5
  },
  {
    "code": "10 73 16.33",
    "label": "Glazed Canopies",
    "level": 5
  },
  {
    "code": "10 73 16.36",
    "label": "Point Supported Glass Canopies",
    "level": 5
  },
  {
    "code": "10 73 23",
    "label": "Car Shelters",
    "level": 4
  },
  {
    "code": "10 73 26",
    "label": "Walkway Coverings",
    "level": 4
  },
  {
    "code": "10 73 26.13",
    "label": "Metal Walkway Coverings",
    "level": 5
  },
  {
    "code": "10 73 26.23",
    "label": "Fabric Walkway Coverings",
    "level": 5
  },
  {
    "code": "10 73 26.33",
    "label": "Glazed Walkway Coverings",
    "level": 5
  },
  {
    "code": "10 73 26.36",
    "label": "Point Supported Glass Walkway Coverings",
    "level": 5
  },
  {
    "code": "10 73 33",
    "label": "Marquees",
    "level": 4
  },
  {
    "code": "10 73 43",
    "label": "Transportation Stop Shelters",
    "level": 4
  },
  {
    "code": "10 74 00",
    "label": "Manufactured Exterior Specialties",
    "level": 3
  },
  {
    "code": "10 74 13",
    "label": "Exterior Clocks",
    "level": 4
  },
  {
    "code": "10 74 23",
    "label": "Cupolas",
    "level": 4
  },
  {
    "code": "10 74 26",
    "label": "Spires",
    "level": 4
  },
  {
    "code": "10 74 29",
    "label": "Steeples",
    "level": 4
  },
  {
    "code": "10 74 33",
    "label": "Weathervanes",
    "level": 4
  },
  {
    "code": "10 74 43",
    "label": "Below-Grade Egress Assemblies",
    "level": 4
  },
  {
    "code": "10 74 46",
    "label": "Window Wells",
    "level": 4
  },
  {
    "code": "10 75 00",
    "label": "Flagpoles",
    "level": 3
  },
  {
    "code": "10 75 13",
    "label": "Automatic Flagpoles",
    "level": 4
  },
  {
    "code": "10 75 16",
    "label": "Ground-Set Flagpoles",
    "level": 4
  },
  {
    "code": "10 75 19",
    "label": "Nautical Flagpoles",
    "level": 4
  },
  {
    "code": "10 75 23",
    "label": "Wall-Mounted Flagpoles",
    "level": 4
  },
  {
    "code": "10 75 26",
    "label": "Roof-Mounted Flagpoles",
    "level": 4
  },
  {
    "code": "10 75 29",
    "label": "Plaza-Mounted Flagpoles",
    "level": 4
  },
  {
    "code": "10 80 00",
    "label": "Other Specialties",
    "level": 2
  },
  {
    "code": "10 81 00",
    "label": "Pest Control Devices",
    "level": 3
  },
  {
    "code": "10 81 13",
    "label": "Bird Control Devices",
    "level": 4
  },
  {
    "code": "10 81 16",
    "label": "Insect Control Devices",
    "level": 4
  },
  {
    "code": "10 81 19",
    "label": "Rodent Control Devices",
    "level": 4
  },
  {
    "code": "10 82 00",
    "label": "Grilles and Screens",
    "level": 3
  },
  {
    "code": "10 82 13",
    "label": "Exterior Grilles and Screens",
    "level": 4
  },
  {
    "code": "10 82 19",
    "label": "Exterior Sound Screens",
    "level": 4
  },
  {
    "code": "10 82 23",
    "label": "Interior Grilles and Screens",
    "level": 4
  },
  {
    "code": "10 83 00",
    "label": "Flags and Banners",
    "level": 3
  },
  {
    "code": "10 83 13",
    "label": "Flags",
    "level": 4
  },
  {
    "code": "10 83 16",
    "label": "Banners",
    "level": 4
  },
  {
    "code": "10 84 00",
    "label": "Gas Lighting",
    "level": 3
  },
  {
    "code": "10 84 13",
    "label": "Exterior Gas Lighting",
    "level": 4
  },
  {
    "code": "10 84 16",
    "label": "Interior Gas Lighting",
    "level": 4
  },
  {
    "code": "10 86 00",
    "label": "Security Mirrors and Domes",
    "level": 3
  },
  {
    "code": "10 88 00",
    "label": "Scales",
    "level": 3
  },
  {
    "code": "11 00 00",
    "label": "Equipment",
    "level": 1
  },
  {
    "code": "11 01 00",
    "label": "Operation and Maintenance of Equipment",
    "level": 3
  },
  {
    "code": "11 01 10",
    "label": "Operation and Maintenance of Vehicle and Pedestrian Equipment",
    "level": 4
  },
  {
    "code": "11 01 20",
    "label": "Operation and Maintenance of Commercial Equipment",
    "level": 4
  },
  {
    "code": "11 01 30",
    "label": "Operation and Maintenance of Residential Equipment",
    "level": 4
  },
  {
    "code": "11 01 40",
    "label": "Operation and Maintenance of Foodservice Equipment",
    "level": 4
  },
  {
    "code": "11 01 50",
    "label": "Operation and Maintenance of Educational and Scientific Equipment",
    "level": 4
  },
  {
    "code": "11 01 56",
    "label": "Operation and Maintenance of Observatory Equipment",
    "level": 4
  },
  {
    "code": "11 01 60",
    "label": "Operation and Maintenance of Entertainment and Recreation Equipment",
    "level": 4
  },
  {
    "code": "11 01 70",
    "label": "Operation and Maintenance of Healthcare Equipment",
    "level": 4
  },
  {
    "code": "11 01 80",
    "label": "Operation and Maintenance of Facility Maintenance and Operation Equipment",
    "level": 4
  },
  {
    "code": "11 01 90",
    "label": "Operation and Maintenance of Other Equipment",
    "level": 4
  },
  {
    "code": "11 05 00",
    "label": "Common Work Results for Equipment",
    "level": 3
  },
  {
    "code": "11 05 05",
    "label": "Selective Demolition for Equipment",
    "level": 4
  },
  {
    "code": "11 05 13",
    "label": "Common Motor Requirements for Equipment",
    "level": 4
  },
  {
    "code": "11 06 00",
    "label": "Schedules for Equipment",
    "level": 3
  },
  {
    "code": "11 06 10",
    "label": "Schedules for Vehicle and Pedestrian Equipment",
    "level": 4
  },
  {
    "code": "11 06 20",
    "label": "Schedules for Commercial Equipment",
    "level": 4
  },
  {
    "code": "11 06 30",
    "label": "Schedules for Residential Equipment",
    "level": 4
  },
  {
    "code": "11 06 40",
    "label": "Schedules for Foodservice Equipment",
    "level": 4
  },
  {
    "code": "11 06 40.13",
    "label": "Foodservice Equipment Schedule",
    "level": 5
  },
  {
    "code": "11 06 50",
    "label": "Schedules for Educational and Scientific Equipment",
    "level": 4
  },
  {
    "code": "11 06 60",
    "label": "Schedules for Entertainment and Recreation Equipment",
    "level": 4
  },
  {
    "code": "11 06 70",
    "label": "Schedules for Healthcare Equipment",
    "level": 4
  },
  {
    "code": "11 06 70.13",
    "label": "Healthcare Equipment Schedule",
    "level": 5
  },
  {
    "code": "11 06 80",
    "label": "Schedules for Facility Maintenance and Operation Equipment",
    "level": 4
  },
  {
    "code": "11 06 90",
    "label": "Schedules for Other Equipment",
    "level": 4
  },
  {
    "code": "11 06 90.11",
    "label": "Schedules for Detention Equipment",
    "level": 5
  },
  {
    "code": "11 08 00",
    "label": "Commissioning of Equipment",
    "level": 3
  },
  {
    "code": "11 10 00",
    "label": "Vehicle and Pedestrian Equipment",
    "level": 2
  },
  {
    "code": "11 11 00",
    "label": "Vehicle Service Equipment",
    "level": 3
  },
  {
    "code": "11 11 13",
    "label": "Compressed-Air Vehicle Service Equipment",
    "level": 4
  },
  {
    "code": "11 11 19",
    "label": "Vehicle Lubrication Equipment",
    "level": 4
  },
  {
    "code": "11 11 23",
    "label": "Tire-Changing Equipment",
    "level": 4
  },
  {
    "code": "11 11 26",
    "label": "Vehicle-Washing Equipment",
    "level": 4
  },
  {
    "code": "11 11 36",
    "label": "Vehicle Charging Equipment",
    "level": 4
  },
  {
    "code": "11 11 36.13",
    "label": "Commercial Electric Vehicle Charging Unit",
    "level": 5
  },
  {
    "code": "11 11 36.16",
    "label": "Residential Electric Vehicle Charging Unit",
    "level": 5
  },
  {
    "code": "11 12 00",
    "label": "Parking Control Equipment",
    "level": 3
  },
  {
    "code": "11 12 13",
    "label": "Parking Key and Card Control Units",
    "level": 4
  },
  {
    "code": "11 12 16",
    "label": "Parking Ticket Dispensers",
    "level": 4
  },
  {
    "code": "11 12 23",
    "label": "Parking Meters",
    "level": 4
  },
  {
    "code": "11 12 26",
    "label": "Parking Fee Collection Equipment",
    "level": 4
  },
  {
    "code": "11 12 26.13",
    "label": "Parking Fee Coin Collection Equipment",
    "level": 5
  },
  {
    "code": "11 12 33",
    "label": "Parking Gates",
    "level": 4
  },
  {
    "code": "11 12 33.13",
    "label": "Lift Arm Parking Gates",
    "level": 5
  },
  {
    "code": "11 12 33.16",
    "label": "Sliding Parking Gates",
    "level": 5
  },
  {
    "code": "11 12 33.19",
    "label": "Swinging Parking Gates",
    "level": 5
  },
  {
    "code": "11 13 00",
    "label": "Loading Dock Equipment",
    "level": 3
  },
  {
    "code": "11 13 13",
    "label": "Loading Dock Bumpers",
    "level": 4
  },
  {
    "code": "11 13 16",
    "label": "Loading Dock Seals and Shelters",
    "level": 4
  },
  {
    "code": "11 13 16.13",
    "label": "Loading Dock Seals",
    "level": 5
  },
  {
    "code": "11 13 16.23",
    "label": "Loading Dock Shelters",
    "level": 5
  },
  {
    "code": "11 13 16.33",
    "label": "Loading Dock Rail Shelters",
    "level": 5
  },
  {
    "code": "11 13 19",
    "label": "Stationary Loading Dock Equipment",
    "level": 4
  },
  {
    "code": "11 13 19.13",
    "label": "Loading Dock Levelers",
    "level": 5
  },
  {
    "code": "11 13 19.23",
    "label": "Stationary Loading Dock Lifts",
    "level": 5
  },
  {
    "code": "11 13 19.26",
    "label": "Loading Dock Truck Lifts",
    "level": 5
  },
  {
    "code": "11 13 19.33",
    "label": "Loading Dock Truck Restraints",
    "level": 5
  },
  {
    "code": "11 13 23",
    "label": "Portable Dock Equipment",
    "level": 4
  },
  {
    "code": "11 13 23.13",
    "label": "Portable Dock Lifts",
    "level": 5
  },
  {
    "code": "11 13 23.16",
    "label": "Portable Dock Ramps",
    "level": 5
  },
  {
    "code": "11 13 23.19",
    "label": "Portable Dock Bridges",
    "level": 5
  },
  {
    "code": "11 13 23.23",
    "label": "Portable Dock Platforms",
    "level": 5
  },
  {
    "code": "11 13 26",
    "label": "Loading Dock Lights",
    "level": 4
  },
  {
    "code": "11 14 00",
    "label": "Pedestrian Control Equipment",
    "level": 3
  },
  {
    "code": "11 14 13",
    "label": "Pedestrian Gates",
    "level": 4
  },
  {
    "code": "11 14 13.16",
    "label": "Rotary Gates",
    "level": 5
  },
  {
    "code": "11 14 13.19",
    "label": "Turnstiles",
    "level": 5
  },
  {
    "code": "11 14 16",
    "label": "Pedestrian Control Devices",
    "level": 4
  },
  {
    "code": "11 14 19",
    "label": "Portable Posts and Railings",
    "level": 4
  },
  {
    "code": "11 14 26",
    "label": "Pedestrian Fare Collection Equipment",
    "level": 4
  },
  {
    "code": "11 14 26.13",
    "label": "Pedestrian Coin Fare Collection Equipment",
    "level": 5
  },
  {
    "code": "11 14 43",
    "label": "Pedestrian Detection Equipment",
    "level": 4
  },
  {
    "code": "11 14 43.13",
    "label": "Electronic Detection and Counting Systems",
    "level": 5
  },
  {
    "code": "11 14 53",
    "label": "Pedestrian Security Equipment",
    "level": 4
  },
  {
    "code": "11 15 00",
    "label": "Security Control Equipment",
    "level": 3
  },
  {
    "code": "11 20 00",
    "label": "Commercial Equipment",
    "level": 2
  },
  {
    "code": "11 21 00",
    "label": "Retail and Service Equipment",
    "level": 3
  },
  {
    "code": "11 21 13",
    "label": "Cash Registers and Checking Equipment",
    "level": 4
  },
  {
    "code": "11 21 23",
    "label": "Vending Equipment",
    "level": 4
  },
  {
    "code": "11 21 23.13",
    "label": "Merchandise Vending Machines",
    "level": 5
  },
  {
    "code": "11 21 23.16",
    "label": "Reverse Vending Machines",
    "level": 5
  },
  {
    "code": "11 21 23.19",
    "label": "Video Rental Vending Machines",
    "level": 5
  },
  {
    "code": "11 21 23.36",
    "label": "Token Vending Machines",
    "level": 5
  },
  {
    "code": "11 21 24",
    "label": "Money Changing Machines",
    "level": 4
  },
  {
    "code": "11 21 33",
    "label": "Checkroom Equipment",
    "level": 4
  },
  {
    "code": "11 21 43",
    "label": "Weighing and Wrapping Equipment",
    "level": 4
  },
  {
    "code": "11 21 53",
    "label": "Barber and Beauty Shop Equipment",
    "level": 4
  },
  {
    "code": "11 21 63",
    "label": "Refrigerated Display Equipment",
    "level": 4
  },
  {
    "code": "11 21 73",
    "label": "Commercial Laundry and Dry Cleaning Equipment",
    "level": 4
  },
  {
    "code": "11 21 73.13",
    "label": "Dry Cleaning Equipment",
    "level": 5
  },
  {
    "code": "11 21 73.16",
    "label": "Drying and Conditioning Equipment",
    "level": 5
  },
  {
    "code": "11 21 73.19",
    "label": "Finishing Equipment",
    "level": 5
  },
  {
    "code": "11 21 73.23",
    "label": "Commercial Ironing Equipment",
    "level": 5
  },
  {
    "code": "11 21 73.26",
    "label": "Commercial Washers and Extractors",
    "level": 5
  },
  {
    "code": "11 21 73.33",
    "label": "Coin-Operated Laundry Equipment",
    "level": 5
  },
  {
    "code": "11 21 73.43",
    "label": "Hanging Garment Conveyors",
    "level": 5
  },
  {
    "code": "11 21 83",
    "label": "Photo Processing Equipment",
    "level": 4
  },
  {
    "code": "11 22 00",
    "label": "Banking Equipment",
    "level": 3
  },
  {
    "code": "11 22 13",
    "label": "Vault Equipment",
    "level": 4
  },
  {
    "code": "11 22 13.13",
    "label": "Safe Deposit Boxes",
    "level": 5
  },
  {
    "code": "11 22 13.16",
    "label": "Safes",
    "level": 5
  },
  {
    "code": "11 22 13.23",
    "label": "Vault Ventilators",
    "level": 5
  },
  {
    "code": "11 22 13.26",
    "label": "Time Capsules",
    "level": 5
  },
  {
    "code": "11 22 16",
    "label": "Teller and Service Equipment",
    "level": 4
  },
  {
    "code": "11 22 16.13",
    "label": "Teller Equipment Systems",
    "level": 5
  },
  {
    "code": "11 22 16.16",
    "label": "Automatic Banking Systems",
    "level": 5
  },
  {
    "code": "11 22 16.19",
    "label": "Money Handling Equipment",
    "level": 5
  },
  {
    "code": "11 22 16.23",
    "label": "Money Depositories",
    "level": 5
  },
  {
    "code": "11 22 16.26",
    "label": "Money Cart Pass-Through",
    "level": 5
  },
  {
    "code": "11 22 16.29",
    "label": "Package Transfer Units",
    "level": 5
  },
  {
    "code": "11 22 16.33",
    "label": "Deal Trays",
    "level": 5
  },
  {
    "code": "11 25 00",
    "label": "Hospitality Equipment",
    "level": 3
  },
  {
    "code": "11 25 13",
    "label": "Registration Equipment",
    "level": 4
  },
  {
    "code": "11 28 00",
    "label": "Office Equipment",
    "level": 3
  },
  {
    "code": "11 28 13",
    "label": "Computers",
    "level": 4
  },
  {
    "code": "11 28 16",
    "label": "Printers",
    "level": 4
  },
  {
    "code": "11 28 23",
    "label": "Copiers",
    "level": 4
  },
  {
    "code": "11 29 00",
    "label": "Postal, Packaging, and Shipping Equipment",
    "level": 3
  },
  {
    "code": "11 29 23",
    "label": "Packaging Equipment",
    "level": 4
  },
  {
    "code": "11 29 33",
    "label": "Shipping Equipment",
    "level": 4
  },
  {
    "code": "11 29 55",
    "label": "Postal Equipment",
    "level": 4
  },
  {
    "code": "11 30 00",
    "label": "Residential Equipment",
    "level": 2
  },
  {
    "code": "11 30 13",
    "label": "Residential Appliances",
    "level": 4
  },
  {
    "code": "11 30 13.13",
    "label": "Residential Kitchen Appliances",
    "level": 5
  },
  {
    "code": "11 30 13.23",
    "label": "Residential Laundry Appliances",
    "level": 5
  },
  {
    "code": "11 30 33",
    "label": "Retractable Stairs",
    "level": 4
  },
  {
    "code": "11 30 34",
    "label": "Residential Ceiling Fans",
    "level": 4
  },
  {
    "code": "11 32 00",
    "label": "Unit Kitchens",
    "level": 3
  },
  {
    "code": "11 32 13",
    "label": "Metal Unit Kitchens",
    "level": 4
  },
  {
    "code": "11 32 16",
    "label": "Wood Unit Kitchens",
    "level": 4
  },
  {
    "code": "11 32 19",
    "label": "Plastic-Laminate-Clad Unit Kitchens",
    "level": 4
  },
  {
    "code": "11 40 00",
    "label": "Foodservice Equipment",
    "level": 2
  },
  {
    "code": "11 41 00",
    "label": "Foodservice Storage Equipment",
    "level": 3
  },
  {
    "code": "11 41 13",
    "label": "Refrigerated Food Storage Cases",
    "level": 4
  },
  {
    "code": "11 41 23",
    "label": "Walk-In Coolers",
    "level": 4
  },
  {
    "code": "11 41 26",
    "label": "Walk-In Freezers",
    "level": 4
  },
  {
    "code": "11 41 33",
    "label": "Foodservice Shelving",
    "level": 4
  },
  {
    "code": "11 42 00",
    "label": "Food Preparation Equipment",
    "level": 3
  },
  {
    "code": "11 42 13",
    "label": "Food Preparation Appliances",
    "level": 4
  },
  {
    "code": "11 42 16",
    "label": "Food Preparation Surfaces",
    "level": 4
  },
  {
    "code": "11 43 00",
    "label": "Food Delivery Carts and Conveyors",
    "level": 3
  },
  {
    "code": "11 43 13",
    "label": "Food Delivery Carts",
    "level": 4
  },
  {
    "code": "11 43 16",
    "label": "Food Delivery Conveyors",
    "level": 4
  },
  {
    "code": "11 44 00",
    "label": "Food Cooking Equipment",
    "level": 3
  },
  {
    "code": "11 44 13",
    "label": "Commercial Ranges",
    "level": 4
  },
  {
    "code": "11 44 16",
    "label": "Commercial Ovens",
    "level": 4
  },
  {
    "code": "11 46 00",
    "label": "Food Dispensing Equipment",
    "level": 3
  },
  {
    "code": "11 46 13",
    "label": "Bar Equipment",
    "level": 4
  },
  {
    "code": "11 46 16",
    "label": "Service Line Equipment",
    "level": 4
  },
  {
    "code": "11 46 19",
    "label": "Soda Fountain Equipment",
    "level": 4
  },
  {
    "code": "11 46 23",
    "label": "Coffee and Espresso Equipment",
    "level": 4
  },
  {
    "code": "11 46 83",
    "label": "Ice Machines",
    "level": 4
  },
  {
    "code": "11 48 00",
    "label": "Foodservice Cleaning and Disposal Equipment",
    "level": 3
  },
  {
    "code": "11 48 13",
    "label": "Commercial Dishwashers",
    "level": 4
  },
  {
    "code": "11 50 00",
    "label": "Educational and Scientific Equipment",
    "level": 2
  },
  {
    "code": "11 51 00",
    "label": "Library Equipment",
    "level": 3
  },
  {
    "code": "11 51 13",
    "label": "Automated Book Storage and Retrieval Systems",
    "level": 4
  },
  {
    "code": "11 51 16",
    "label": "Book Depositories",
    "level": 4
  },
  {
    "code": "11 51 19",
    "label": "Book Theft Protection Equipment",
    "level": 4
  },
  {
    "code": "11 51 23",
    "label": "Library Stack Systems",
    "level": 4
  },
  {
    "code": "11 51 23.13",
    "label": "Metal Library Shelving",
    "level": 5
  },
  {
    "code": "11 52 00",
    "label": "Audio-Visual Equipment",
    "level": 3
  },
  {
    "code": "11 52 13",
    "label": "Projection Screens",
    "level": 4
  },
  {
    "code": "11 52 13.13",
    "label": "Fixed Projection Screens",
    "level": 5
  },
  {
    "code": "11 52 13.16",
    "label": "Portable Projection Screens",
    "level": 5
  },
  {
    "code": "11 52 13.19",
    "label": "Rear Projection Screens",
    "level": 5
  },
  {
    "code": "11 52 16",
    "label": "Projectors",
    "level": 4
  },
  {
    "code": "11 52 16.13",
    "label": "Movie Projectors",
    "level": 5
  },
  {
    "code": "11 52 16.16",
    "label": "Slide Projectors",
    "level": 5
  },
  {
    "code": "11 52 16.19",
    "label": "Overhead Projectors",
    "level": 5
  },
  {
    "code": "11 52 16.23",
    "label": "Opaque Projectors",
    "level": 5
  },
  {
    "code": "11 52 16.26",
    "label": "Video Projectors",
    "level": 5
  },
  {
    "code": "11 52 19",
    "label": "Players and Recorders",
    "level": 4
  },
  {
    "code": "11 52 23",
    "label": "Audio-Visual Equipment Supports",
    "level": 4
  },
  {
    "code": "11 53 00",
    "label": "Laboratory Equipment",
    "level": 3
  },
  {
    "code": "11 53 13",
    "label": "Laboratory Fume Hoods",
    "level": 4
  },
  {
    "code": "11 53 13.13",
    "label": "Recirculating Laboratory Fume Hoods",
    "level": 5
  },
  {
    "code": "11 53 16",
    "label": "Laboratory Incubators",
    "level": 4
  },
  {
    "code": "11 53 17",
    "label": "Laboratory Equipment Washers",
    "level": 4
  },
  {
    "code": "11 53 19",
    "label": "Laboratory Sterilizers",
    "level": 4
  },
  {
    "code": "11 53 23",
    "label": "Laboratory Refrigerators",
    "level": 4
  },
  {
    "code": "11 53 26",
    "label": "Laboratory Freezers",
    "level": 4
  },
  {
    "code": "11 53 29",
    "label": "Laboratory Controlled-Environment Cabinets",
    "level": 4
  },
  {
    "code": "11 53 33",
    "label": "Emergency Safety Appliances",
    "level": 4
  },
  {
    "code": "11 53 43",
    "label": "Service Fittings and Accessories",
    "level": 4
  },
  {
    "code": "11 53 53",
    "label": "Biological Safety Cabinets",
    "level": 4
  },
  {
    "code": "11 55 00",
    "label": "Planetarium Equipment",
    "level": 3
  },
  {
    "code": "11 55 13",
    "label": "Planetarium Projectors",
    "level": 4
  },
  {
    "code": "11 55 16",
    "label": "Planetarium Pendulums",
    "level": 4
  },
  {
    "code": "11 56 00",
    "label": "Observatory Equipment",
    "level": 3
  },
  {
    "code": "11 56 13",
    "label": "Telescopes",
    "level": 4
  },
  {
    "code": "11 56 16",
    "label": "Telescope Mounts",
    "level": 4
  },
  {
    "code": "11 56 19",
    "label": "Telescope Drive Mechanisms",
    "level": 4
  },
  {
    "code": "11 56 23",
    "label": "Telescope Domes",
    "level": 4
  },
  {
    "code": "11 57 00",
    "label": "Vocational Shop Equipment",
    "level": 3
  },
  {
    "code": "11 59 00",
    "label": "Exhibit Equipment",
    "level": 3
  },
  {
    "code": "11 60 00",
    "label": "Entertainment and Recreation Equipment",
    "level": 2
  },
  {
    "code": "11 61 00",
    "label": "Broadcast, Theater, and Stage Equipment",
    "level": 3
  },
  {
    "code": "11 61 13",
    "label": "Acoustical Shells",
    "level": 4
  },
  {
    "code": "11 61 23",
    "label": "Folding and Portable Stages",
    "level": 4
  },
  {
    "code": "11 61 33",
    "label": "Rigging Systems and Controls",
    "level": 4
  },
  {
    "code": "11 61 33.11",
    "label": "Lighting Rigging Systems",
    "level": 5
  },
  {
    "code": "11 61 33.16",
    "label": "Scenery Rigging Systems",
    "level": 5
  },
  {
    "code": "11 61 33.19",
    "label": "Curtain Systems",
    "level": 5
  },
  {
    "code": "11 61 43",
    "label": "Stage Curtains",
    "level": 4
  },
  {
    "code": "11 62 00",
    "label": "Musical Equipment",
    "level": 3
  },
  {
    "code": "11 62 13",
    "label": "Bells",
    "level": 4
  },
  {
    "code": "11 62 16",
    "label": "Carillons",
    "level": 4
  },
  {
    "code": "11 62 19",
    "label": "Organs",
    "level": 4
  },
  {
    "code": "11 66 00",
    "label": "Athletic Equipment",
    "level": 3
  },
  {
    "code": "11 66 13",
    "label": "Exercise Equipment",
    "level": 4
  },
  {
    "code": "11 66 23",
    "label": "Gymnasium Equipment",
    "level": 4
  },
  {
    "code": "11 66 23.13",
    "label": "Basketball Equipment",
    "level": 5
  },
  {
    "code": "11 66 23.23",
    "label": "Volleyball Equipment",
    "level": 5
  },
  {
    "code": "11 66 23.33",
    "label": "Interior Tennis Equipment",
    "level": 5
  },
  {
    "code": "11 66 23.43",
    "label": "Interior Track and Field Equipment",
    "level": 5
  },
  {
    "code": "11 66 23.53",
    "label": "Wall Padding",
    "level": 5
  },
  {
    "code": "11 66 23.56",
    "label": "Mat Storage",
    "level": 5
  },
  {
    "code": "11 66 43",
    "label": "Interior Scoreboards",
    "level": 4
  },
  {
    "code": "11 66 53",
    "label": "Gymnasium Dividers",
    "level": 4
  },
  {
    "code": "11 66 53.13",
    "label": "Batting/Golf Cages",
    "level": 5
  },
  {
    "code": "11 67 00",
    "label": "Recreational Equipment",
    "level": 3
  },
  {
    "code": "11 67 13",
    "label": "Bowling Alley Equipment",
    "level": 4
  },
  {
    "code": "11 67 23",
    "label": "Shooting Range Equipment",
    "level": 4
  },
  {
    "code": "11 67 33",
    "label": "Climbing Walls",
    "level": 4
  },
  {
    "code": "11 67 43",
    "label": "Table Games Equipment",
    "level": 4
  },
  {
    "code": "11 67 43.13",
    "label": "Pool Tables",
    "level": 5
  },
  {
    "code": "11 67 43.23",
    "label": "Ping-Pong Tables",
    "level": 5
  },
  {
    "code": "11 67 53",
    "label": "Game Room Equipment",
    "level": 4
  },
  {
    "code": "11 67 53.13",
    "label": "Video Games",
    "level": 5
  },
  {
    "code": "11 67 53.23",
    "label": "Pinball Machines",
    "level": 5
  },
  {
    "code": "11 68 00",
    "label": "Play Field Equipment and Structures",
    "level": 3
  },
  {
    "code": "11 68 13",
    "label": "Playground Equipment",
    "level": 4
  },
  {
    "code": "11 68 16",
    "label": "Play Structures",
    "level": 4
  },
  {
    "code": "11 68 23",
    "label": "Exterior Court Athletic Equipment",
    "level": 4
  },
  {
    "code": "11 68 23.13",
    "label": "Exterior Basketball Equipment",
    "level": 5
  },
  {
    "code": "11 68 23.23",
    "label": "Exterior Volleyball Equipment",
    "level": 5
  },
  {
    "code": "11 68 23.33",
    "label": "Tennis Equipment",
    "level": 5
  },
  {
    "code": "11 68 33",
    "label": "Athletic Field Equipment",
    "level": 4
  },
  {
    "code": "11 68 33.13",
    "label": "Football Field Equipment",
    "level": 5
  },
  {
    "code": "11 68 33.23",
    "label": "Soccer and Field Hockey Equipment",
    "level": 5
  },
  {
    "code": "11 68 33.33",
    "label": "Baseball Field Equipment",
    "level": 5
  },
  {
    "code": "11 68 33.43",
    "label": "Track and Field Equipment",
    "level": 5
  },
  {
    "code": "11 68 43",
    "label": "Exterior Scoreboards",
    "level": 4
  },
  {
    "code": "11 70 00",
    "label": "Healthcare Equipment",
    "level": 2
  },
  {
    "code": "11 71 00",
    "label": "Medical Sterilizing Equipment",
    "level": 3
  },
  {
    "code": "11 72 00",
    "label": "Examination and Treatment Equipment",
    "level": 3
  },
  {
    "code": "11 72 13",
    "label": "Examination Equipment",
    "level": 4
  },
  {
    "code": "11 72 53",
    "label": "Treatment Equipment",
    "level": 4
  },
  {
    "code": "11 73 00",
    "label": "Patient Care Equipment",
    "level": 3
  },
  {
    "code": "11 73 13",
    "label": "Psychiatric Seclusion Room Padding",
    "level": 4
  },
  {
    "code": "11 74 00",
    "label": "Dental Equipment",
    "level": 3
  },
  {
    "code": "11 75 00",
    "label": "Optical Equipment",
    "level": 3
  },
  {
    "code": "11 76 00",
    "label": "Operating Room Equipment",
    "level": 3
  },
  {
    "code": "11 77 00",
    "label": "Radiology Equipment",
    "level": 3
  },
  {
    "code": "11 78 00",
    "label": "Mortuary Equipment",
    "level": 3
  },
  {
    "code": "11 78 13",
    "label": "Mortuary Refrigerators",
    "level": 4
  },
  {
    "code": "11 78 16",
    "label": "Crematorium Equipment",
    "level": 4
  },
  {
    "code": "11 78 19",
    "label": "Mortuary Lifts",
    "level": 4
  },
  {
    "code": "11 79 00",
    "label": "Therapy Equipment",
    "level": 3
  },
  {
    "code": "11 80 00",
    "label": "Facility Maintenance and Operation Equipment",
    "level": 2
  },
  {
    "code": "11 81 00",
    "label": "Facility Maintenance Equipment",
    "level": 3
  },
  {
    "code": "11 81 13",
    "label": "Floor and Wall Cleaning Equipment",
    "level": 4
  },
  {
    "code": "11 81 16",
    "label": "Housekeeping Carts",
    "level": 4
  },
  {
    "code": "11 81 19",
    "label": "Vacuum Cleaning Systems",
    "level": 4
  },
  {
    "code": "11 81 23",
    "label": "Façade Access Equipment",
    "level": 4
  },
  {
    "code": "11 81 23.13",
    "label": "Window Washing Systems",
    "level": 5
  },
  {
    "code": "11 81 29",
    "label": "Facility Fall Protection",
    "level": 4
  },
  {
    "code": "11 82 00",
    "label": "Facility Solid Waste Handling Equipment",
    "level": 3
  },
  {
    "code": "11 82 13",
    "label": "Solid Waste Bins",
    "level": 4
  },
  {
    "code": "11 82 19",
    "label": "Packaged Incinerators",
    "level": 4
  },
  {
    "code": "11 82 23",
    "label": "Recycling Equipment",
    "level": 4
  },
  {
    "code": "11 82 26",
    "label": "Facility Waste Compactors",
    "level": 4
  },
  {
    "code": "11 82 29",
    "label": "Composting Equipment",
    "level": 4
  },
  {
    "code": "11 82 33",
    "label": "Facility Waste Shredders",
    "level": 4
  },
  {
    "code": "11 82 36",
    "label": "Facility Waste Balers",
    "level": 4
  },
  {
    "code": "11 90 00",
    "label": "Other Equipment",
    "level": 2
  },
  {
    "code": "11 91 00",
    "label": "Religious Equipment",
    "level": 3
  },
  {
    "code": "11 91 13",
    "label": "Baptisteries",
    "level": 4
  },
  {
    "code": "11 92 00",
    "label": "Agricultural Equipment",
    "level": 3
  },
  {
    "code": "11 92 13",
    "label": "Milkers",
    "level": 4
  },
  {
    "code": "11 92 16",
    "label": "Stock Feeders",
    "level": 4
  },
  {
    "code": "11 92 19",
    "label": "Stock Waterers",
    "level": 4
  },
  {
    "code": "11 92 23",
    "label": "Agricultural Waste Clean-Up Equipment",
    "level": 4
  },
  {
    "code": "11 93 00",
    "label": "Horticultural Equipment",
    "level": 3
  },
  {
    "code": "11 93 13",
    "label": "Hydroponic Growing Systems",
    "level": 4
  },
  {
    "code": "11 93 16",
    "label": "Seeders",
    "level": 4
  },
  {
    "code": "11 93 19",
    "label": "Transplanters",
    "level": 4
  },
  {
    "code": "11 93 23",
    "label": "Potting Machines",
    "level": 4
  },
  {
    "code": "11 93 26",
    "label": "Flat Fillers",
    "level": 4
  },
  {
    "code": "11 93 29",
    "label": "Baggers",
    "level": 4
  },
  {
    "code": "11 93 33",
    "label": "Soil Mixers",
    "level": 4
  },
  {
    "code": "11 94 00",
    "label": "Veterinary Equipment",
    "level": 3
  },
  {
    "code": "11 95 00",
    "label": "Arts and Crafts Equipment",
    "level": 3
  },
  {
    "code": "11 95 13",
    "label": "Kilns",
    "level": 4
  },
  {
    "code": "11 97 00",
    "label": "Security Equipment",
    "level": 3
  },
  {
    "code": "11 97 13",
    "label": "Deal Drawers",
    "level": 4
  },
  {
    "code": "11 97 16",
    "label": "Gun Ports",
    "level": 4
  },
  {
    "code": "11 97 23",
    "label": "Valuable Material Storage",
    "level": 4
  },
  {
    "code": "11 98 00",
    "label": "Detention Equipment",
    "level": 3
  },
  {
    "code": "11 98 11",
    "label": "Detention Equipment General Requirements",
    "level": 4
  },
  {
    "code": "11 98 12",
    "label": "Detention Doors and Frames",
    "level": 4
  },
  {
    "code": "11 98 13",
    "label": "Detention Pass-Through Doors",
    "level": 4
  },
  {
    "code": "11 98 14",
    "label": "Detention Door Hardware",
    "level": 4
  },
  {
    "code": "11 98 16",
    "label": "Detention Equipment Fasteners",
    "level": 4
  },
  {
    "code": "11 98 19",
    "label": "Detention Room Padding",
    "level": 4
  },
  {
    "code": "11 98 21",
    "label": "Detention Windows",
    "level": 4
  },
  {
    "code": "11 98 23",
    "label": "Detention Window Screens",
    "level": 4
  },
  {
    "code": "12 00 00",
    "label": "Furnishings",
    "level": 1
  },
  {
    "code": "12 01 00",
    "label": "Operation and Maintenance of Furnishings",
    "level": 3
  },
  {
    "code": "12 01 10",
    "label": "Operation and Maintenance of Art",
    "level": 4
  },
  {
    "code": "12 01 20",
    "label": "Operation and Maintenance of Window Treatments",
    "level": 4
  },
  {
    "code": "12 01 30",
    "label": "Operation and Maintenance of Casework",
    "level": 4
  },
  {
    "code": "12 01 40",
    "label": "Operation and Maintenance of Furnishings and Accessories",
    "level": 4
  },
  {
    "code": "12 01 50",
    "label": "Operation and Maintenance of Furniture",
    "level": 4
  },
  {
    "code": "12 01 60",
    "label": "Operation and Maintenance of Multiple Seating",
    "level": 4
  },
  {
    "code": "12 01 90",
    "label": "Operation and Maintenance of Other Furnishings",
    "level": 4
  },
  {
    "code": "12 05 00",
    "label": "Common Work Results for Furnishings",
    "level": 3
  },
  {
    "code": "12 05 05",
    "label": "Selective Demolition for Furnishings",
    "level": 4
  },
  {
    "code": "12 05 13",
    "label": "Fabrics",
    "level": 4
  },
  {
    "code": "12 06 00",
    "label": "Schedules for Furnishings",
    "level": 3
  },
  {
    "code": "12 06 10",
    "label": "Schedules for Art",
    "level": 4
  },
  {
    "code": "12 06 20",
    "label": "Schedules for Window Treatments",
    "level": 4
  },
  {
    "code": "12 06 20.13",
    "label": "Window Treatment Schedule",
    "level": 5
  },
  {
    "code": "12 06 30",
    "label": "Schedules for Casework",
    "level": 4
  },
  {
    "code": "12 06 30.13",
    "label": "Manufactured Casework Schedule",
    "level": 5
  },
  {
    "code": "12 06 40",
    "label": "Schedules for Furnishings and Accessories",
    "level": 4
  },
  {
    "code": "12 06 40.13",
    "label": "Furnishings Schedule",
    "level": 5
  },
  {
    "code": "12 06 50",
    "label": "Schedules for Furniture",
    "level": 4
  },
  {
    "code": "12 06 60",
    "label": "Schedules for Multiple Seating",
    "level": 4
  },
  {
    "code": "12 06 90",
    "label": "Schedules for Other Furnishings",
    "level": 4
  },
  {
    "code": "12 08 00",
    "label": "Commissioning of Furnishings",
    "level": 3
  },
  {
    "code": "12 10 00",
    "label": "Art",
    "level": 2
  },
  {
    "code": "12 11 00",
    "label": "Murals",
    "level": 3
  },
  {
    "code": "12 11 13",
    "label": "Photo Murals",
    "level": 4
  },
  {
    "code": "12 11 16",
    "label": "Sculptured Brick Panels",
    "level": 4
  },
  {
    "code": "12 11 23",
    "label": "Brick Murals",
    "level": 4
  },
  {
    "code": "12 11 26",
    "label": "Ceramic Tile Murals",
    "level": 4
  },
  {
    "code": "12 11 33",
    "label": "Trompe l'oeil",
    "level": 4
  },
  {
    "code": "12 12 00",
    "label": "Wall Decorations",
    "level": 3
  },
  {
    "code": "12 12 13",
    "label": "Commissioned Paintings",
    "level": 4
  },
  {
    "code": "12 12 16",
    "label": "Framed Paintings",
    "level": 4
  },
  {
    "code": "12 12 19",
    "label": "Framed Prints",
    "level": 4
  },
  {
    "code": "12 12 23",
    "label": "Tapestries",
    "level": 4
  },
  {
    "code": "12 12 26",
    "label": "Wall Hangings",
    "level": 4
  },
  {
    "code": "12 14 00",
    "label": "Sculptures",
    "level": 3
  },
  {
    "code": "12 14 13",
    "label": "Carved Sculpture",
    "level": 4
  },
  {
    "code": "12 14 16",
    "label": "Cast Sculpture",
    "level": 4
  },
  {
    "code": "12 14 19",
    "label": "Constructed Sculpture",
    "level": 4
  },
  {
    "code": "12 14 23",
    "label": "Relief Art",
    "level": 4
  },
  {
    "code": "12 17 00",
    "label": "Art Glass",
    "level": 3
  },
  {
    "code": "12 17 13",
    "label": "Etched Glass",
    "level": 4
  },
  {
    "code": "12 17 16",
    "label": "Stained Glass",
    "level": 4
  },
  {
    "code": "12 19 00",
    "label": "Religious Art",
    "level": 3
  },
  {
    "code": "12 20 00",
    "label": "Window Treatments",
    "level": 2
  },
  {
    "code": "12 21 00",
    "label": "Window Blinds",
    "level": 3
  },
  {
    "code": "12 21 13",
    "label": "Wood Blinds",
    "level": 4
  },
  {
    "code": "12 21 13.13",
    "label": "Metal Horizontal Louver Blinds",
    "level": 5
  },
  {
    "code": "12 21 13.23",
    "label": "Wood Horizontal Louver Blinds",
    "level": 5
  },
  {
    "code": "12 21 13.33",
    "label": "Plastic Horizontal Louver Blinds",
    "level": 5
  },
  {
    "code": "12 21 16",
    "label": "Vertical Louver Blinds",
    "level": 4
  },
  {
    "code": "12 21 16.13",
    "label": "Metal Vertical Louver Blinds",
    "level": 5
  },
  {
    "code": "12 21 16.23",
    "label": "Wood Vertical Louver Blinds",
    "level": 5
  },
  {
    "code": "12 21 16.33",
    "label": "Plastic Vertical Louver Blinds",
    "level": 5
  },
  {
    "code": "12 21 23",
    "label": "Roll-Down Blinds",
    "level": 4
  },
  {
    "code": "12 21 26",
    "label": "Black-Out Blinds",
    "level": 4
  },
  {
    "code": "12 22 00",
    "label": "Curtains and Drapes",
    "level": 3
  },
  {
    "code": "12 22 13",
    "label": "Draperies",
    "level": 4
  },
  {
    "code": "12 22 16",
    "label": "Drapery Track and Accessories",
    "level": 4
  },
  {
    "code": "12 23 00",
    "label": "Interior Shutters",
    "level": 3
  },
  {
    "code": "12 23 13",
    "label": "Wood Interior Shutters",
    "level": 4
  },
  {
    "code": "12 24 00",
    "label": "Window Shades",
    "level": 3
  },
  {
    "code": "12 24 13",
    "label": "Roller Window Shades",
    "level": 4
  },
  {
    "code": "12 24 16",
    "label": "Pleated Window Shades",
    "level": 4
  },
  {
    "code": "12 24 16.13",
    "label": "Z-Pleated Window Shades",
    "level": 5
  },
  {
    "code": "12 24 16.16",
    "label": "Cellular Shades",
    "level": 5
  },
  {
    "code": "12 24 16.19",
    "label": "Roman Shades",
    "level": 5
  },
  {
    "code": "12 25 00",
    "label": "Window Treatment Operating Hardware",
    "level": 3
  },
  {
    "code": "12 25 09",
    "label": "Window Treatment Control System",
    "level": 4
  },
  {
    "code": "12 25 13",
    "label": "Motorized Drapery Rods",
    "level": 4
  },
  {
    "code": "12 26 00",
    "label": "Interior Daylighting Devices",
    "level": 3
  },
  {
    "code": "12 30 00",
    "label": "Casework",
    "level": 2
  },
  {
    "code": "12 31 00",
    "label": "Manufactured Metal Casework",
    "level": 3
  },
  {
    "code": "12 31 16",
    "label": "Manufactured Metal Sandwich Panel Casework",
    "level": 4
  },
  {
    "code": "12 32 00",
    "label": "Manufactured Wood Casework",
    "level": 3
  },
  {
    "code": "12 32 13",
    "label": "Manufactured Wood-Veneer-Faced Casework",
    "level": 4
  },
  {
    "code": "12 32 16",
    "label": "Manufactured Plastic-Laminate-Clad Casework",
    "level": 4
  },
  {
    "code": "12 34 00",
    "label": "Manufactured Plastic Casework",
    "level": 3
  },
  {
    "code": "12 34 16",
    "label": "Manufactured Solid-Plastic Casework",
    "level": 4
  },
  {
    "code": "12 34 19",
    "label": "Manufactured Solid Surface Casework",
    "level": 4
  },
  {
    "code": "12 35 00",
    "label": "Specialty Casework",
    "level": 3
  },
  {
    "code": "12 35 17",
    "label": "Bank Casework",
    "level": 4
  },
  {
    "code": "12 35 25",
    "label": "Hospitality Casework",
    "level": 4
  },
  {
    "code": "12 35 30",
    "label": "Residential Casework",
    "level": 4
  },
  {
    "code": "12 35 30.13",
    "label": "Kitchen Casework",
    "level": 5
  },
  {
    "code": "12 35 30.23",
    "label": "Bathroom Casework",
    "level": 5
  },
  {
    "code": "12 35 30.43",
    "label": "Dormitory Casework",
    "level": 5
  },
  {
    "code": "12 35 33",
    "label": "Utility Room Casework",
    "level": 4
  },
  {
    "code": "12 35 36",
    "label": "Mailroom Casework",
    "level": 4
  },
  {
    "code": "12 35 39",
    "label": "Commercial Kitchen Casework",
    "level": 4
  },
  {
    "code": "12 35 50",
    "label": "Educational/Library Casework",
    "level": 4
  },
  {
    "code": "12 35 50.13",
    "label": "Educational Casework",
    "level": 5
  },
  {
    "code": "12 35 50.53",
    "label": "Library Casework",
    "level": 5
  },
  {
    "code": "12 35 50.56",
    "label": "Built-In Study Carrels",
    "level": 5
  },
  {
    "code": "12 35 53",
    "label": "Laboratory Casework",
    "level": 4
  },
  {
    "code": "12 35 53.13",
    "label": "Metal Laboratory Casework",
    "level": 5
  },
  {
    "code": "12 35 53.16",
    "label": "Plastic-Laminate-Clad Laboratory Casework",
    "level": 5
  },
  {
    "code": "12 35 53.19",
    "label": "Wood Laboratory Casework",
    "level": 5
  },
  {
    "code": "12 35 53.23",
    "label": "Solid-Plastic Laboratory Casework",
    "level": 5
  },
  {
    "code": "12 35 59",
    "label": "Display Casework",
    "level": 4
  },
  {
    "code": "12 35 70",
    "label": "Healthcare Casework",
    "level": 4
  },
  {
    "code": "12 35 70.13",
    "label": "Hospital Casework",
    "level": 5
  },
  {
    "code": "12 35 70.16",
    "label": "Nurse Station Casework",
    "level": 5
  },
  {
    "code": "12 35 70.19",
    "label": "Exam Room Casework",
    "level": 5
  },
  {
    "code": "12 35 70.74",
    "label": "Dental Casework",
    "level": 5
  },
  {
    "code": "12 35 83",
    "label": "Performing Arts Casework",
    "level": 4
  },
  {
    "code": "12 35 91",
    "label": "Religious Casework",
    "level": 4
  },
  {
    "code": "12 36 00",
    "label": "Countertops",
    "level": 3
  },
  {
    "code": "12 36 13",
    "label": "Concrete Countertops",
    "level": 4
  },
  {
    "code": "12 36 16",
    "label": "Metal Countertops",
    "level": 4
  },
  {
    "code": "12 36 19",
    "label": "Wood Countertops",
    "level": 4
  },
  {
    "code": "12 36 23",
    "label": "Plastic Countertops",
    "level": 4
  },
  {
    "code": "12 36 23.13",
    "label": "Plastic-Laminate-Clad Countertops",
    "level": 5
  },
  {
    "code": "12 36 26",
    "label": "Glass Countertops",
    "level": 4
  },
  {
    "code": "12 36 40",
    "label": "Stone Countertops",
    "level": 4
  },
  {
    "code": "12 36 53",
    "label": "Laboratory Countertops",
    "level": 4
  },
  {
    "code": "12 36 61",
    "label": "Simulated Stone Countertops",
    "level": 4
  },
  {
    "code": "12 36 61.13",
    "label": "Cultured Marble Countertops",
    "level": 5
  },
  {
    "code": "12 36 61.16",
    "label": "Solid Surfacing Countertops",
    "level": 5
  },
  {
    "code": "12 36 61.19",
    "label": "Quartz Agglomerate Countertops",
    "level": 5
  },
  {
    "code": "12 36 71",
    "label": "Paper-Composite Countertops",
    "level": 4
  },
  {
    "code": "12 40 00",
    "label": "Furnishings and Accessories",
    "level": 2
  },
  {
    "code": "12 41 00",
    "label": "Office Accessories",
    "level": 3
  },
  {
    "code": "12 41 13",
    "label": "Desk Accessories",
    "level": 4
  },
  {
    "code": "12 42 00",
    "label": "Table Accessories",
    "level": 3
  },
  {
    "code": "12 42 13",
    "label": "Ceramics",
    "level": 4
  },
  {
    "code": "12 42 16",
    "label": "Flatware",
    "level": 4
  },
  {
    "code": "12 42 16.13",
    "label": "Silverware",
    "level": 5
  },
  {
    "code": "12 42 19",
    "label": "Hollowware",
    "level": 4
  },
  {
    "code": "12 42 23",
    "label": "Glassware",
    "level": 4
  },
  {
    "code": "12 42 26",
    "label": "Table Linens",
    "level": 4
  },
  {
    "code": "12 42 26.13",
    "label": "Napery",
    "level": 5
  },
  {
    "code": "12 43 00",
    "label": "Portable Lamps",
    "level": 3
  },
  {
    "code": "12 43 13",
    "label": "Lamps",
    "level": 4
  },
  {
    "code": "12 43 13.13",
    "label": "Desk Lamps",
    "level": 5
  },
  {
    "code": "12 43 13.16",
    "label": "Table Lamps",
    "level": 5
  },
  {
    "code": "12 43 13.19",
    "label": "Floor Lamps",
    "level": 5
  },
  {
    "code": "12 44 00",
    "label": "Bath Furnishings",
    "level": 3
  },
  {
    "code": "12 44 13",
    "label": "Bath Linens",
    "level": 4
  },
  {
    "code": "12 44 13.13",
    "label": "Bath Mats",
    "level": 5
  },
  {
    "code": "12 44 13.16",
    "label": "Bath Towels",
    "level": 5
  },
  {
    "code": "12 44 16",
    "label": "Shower Curtains",
    "level": 4
  },
  {
    "code": "12 45 00",
    "label": "Bedroom Furnishings",
    "level": 3
  },
  {
    "code": "12 45 13",
    "label": "Bed Linens",
    "level": 4
  },
  {
    "code": "12 45 13.13",
    "label": "Blankets",
    "level": 5
  },
  {
    "code": "12 45 13.16",
    "label": "Comforters",
    "level": 5
  },
  {
    "code": "12 45 16",
    "label": "Pillows",
    "level": 4
  },
  {
    "code": "12 46 00",
    "label": "Furnishing Accessories",
    "level": 3
  },
  {
    "code": "12 46 13",
    "label": "Ash Receptacles",
    "level": 4
  },
  {
    "code": "12 46 16",
    "label": "Bowls",
    "level": 4
  },
  {
    "code": "12 46 19",
    "label": "Clocks",
    "level": 4
  },
  {
    "code": "12 46 23",
    "label": "Decorative Crafts",
    "level": 4
  },
  {
    "code": "12 46 26",
    "label": "Decorative Screens",
    "level": 4
  },
  {
    "code": "12 46 29",
    "label": "Vases",
    "level": 4
  },
  {
    "code": "12 46 33",
    "label": "Waste Receptacles",
    "level": 4
  },
  {
    "code": "12 48 00",
    "label": "Rugs and Mats",
    "level": 3
  },
  {
    "code": "12 48 13",
    "label": "Entrance Floor Mats and Frames",
    "level": 4
  },
  {
    "code": "12 48 13.13",
    "label": "Entrance Floor Mats",
    "level": 5
  },
  {
    "code": "12 48 13.16",
    "label": "Entrance Floor Mat Frames",
    "level": 5
  },
  {
    "code": "12 48 16",
    "label": "Entrance Floor Grilles",
    "level": 4
  },
  {
    "code": "12 48 19",
    "label": "Entrance Floor Gratings",
    "level": 4
  },
  {
    "code": "12 48 23",
    "label": "Entrance Floor Grids",
    "level": 4
  },
  {
    "code": "12 48 26",
    "label": "Entrance Tile",
    "level": 4
  },
  {
    "code": "12 48 43",
    "label": "Floor Mats",
    "level": 4
  },
  {
    "code": "12 48 43.13",
    "label": "Chair Mats",
    "level": 5
  },
  {
    "code": "12 48 43.23",
    "label": "Anti-Fatigue Floor Mats",
    "level": 5
  },
  {
    "code": "12 48 43.26",
    "label": "Fall-Cushioning Floor Mats",
    "level": 5
  },
  {
    "code": "12 48 53",
    "label": "Rugs",
    "level": 4
  },
  {
    "code": "12 48 53.13",
    "label": "Runners",
    "level": 5
  },
  {
    "code": "12 48 53.16",
    "label": "Oriental Rugs",
    "level": 5
  },
  {
    "code": "12 50 00",
    "label": "Furniture",
    "level": 2
  },
  {
    "code": "12 51 00",
    "label": "Office Furniture",
    "level": 3
  },
  {
    "code": "12 51 16",
    "label": "Case Goods",
    "level": 4
  },
  {
    "code": "12 51 16.13",
    "label": "Metal Case Goods",
    "level": 5
  },
  {
    "code": "12 51 16.16",
    "label": "Wood Case Goods",
    "level": 5
  },
  {
    "code": "12 51 16.19",
    "label": "Plastic-Laminate-Clad Case Goods",
    "level": 5
  },
  {
    "code": "12 51 19",
    "label": "Filing Cabinets",
    "level": 4
  },
  {
    "code": "12 51 19.13",
    "label": "Lateral Filing Cabinets",
    "level": 5
  },
  {
    "code": "12 51 19.16",
    "label": "Vertical Filing Cabinets",
    "level": 5
  },
  {
    "code": "12 51 23",
    "label": "Office Tables",
    "level": 4
  },
  {
    "code": "12 51 83",
    "label": "Custom Office Furniture",
    "level": 4
  },
  {
    "code": "12 52 00",
    "label": "Seating",
    "level": 3
  },
  {
    "code": "12 52 13",
    "label": "Chairs",
    "level": 4
  },
  {
    "code": "12 52 19",
    "label": "Upholstered Seating",
    "level": 4
  },
  {
    "code": "12 52 23",
    "label": "Office Seating",
    "level": 4
  },
  {
    "code": "12 52 70",
    "label": "Healthcare Seating",
    "level": 4
  },
  {
    "code": "12 52 83",
    "label": "Custom Seating",
    "level": 4
  },
  {
    "code": "12 53 00",
    "label": "Retail Furniture",
    "level": 3
  },
  {
    "code": "12 53 83",
    "label": "Custom Retail Furniture",
    "level": 4
  },
  {
    "code": "12 54 00",
    "label": "Hospitality Furniture",
    "level": 3
  },
  {
    "code": "12 54 13",
    "label": "Hotel and Motel Furniture",
    "level": 4
  },
  {
    "code": "12 54 16",
    "label": "Restaurant Furniture",
    "level": 4
  },
  {
    "code": "12 54 83",
    "label": "Custom Hospitality Furniture",
    "level": 4
  },
  {
    "code": "12 55 00",
    "label": "Detention Furniture",
    "level": 3
  },
  {
    "code": "12 55 13",
    "label": "Detention Bunks",
    "level": 4
  },
  {
    "code": "12 55 16",
    "label": "Detention Desks",
    "level": 4
  },
  {
    "code": "12 55 19",
    "label": "Detention Stools",
    "level": 4
  },
  {
    "code": "12 55 23",
    "label": "Detention Tables",
    "level": 4
  },
  {
    "code": "12 55 26",
    "label": "Detention Safety Clothes Hooks",
    "level": 4
  },
  {
    "code": "12 55 83",
    "label": "Custom Detention Furniture",
    "level": 4
  },
  {
    "code": "12 55 86",
    "label": "Detention Control Room Furniture",
    "level": 4
  },
  {
    "code": "12 56 00",
    "label": "Institutional Furniture",
    "level": 3
  },
  {
    "code": "12 56 23",
    "label": "Religious Furniture",
    "level": 4
  },
  {
    "code": "12 56 33",
    "label": "Classroom Furniture",
    "level": 4
  },
  {
    "code": "12 56 33.13",
    "label": "Fixed Classroom Tables",
    "level": 5
  },
  {
    "code": "12 56 33.23",
    "label": "Classroom Computer Furniture",
    "level": 5
  },
  {
    "code": "12 56 39",
    "label": "Lecterns",
    "level": 4
  },
  {
    "code": "12 56 43",
    "label": "Dormitory Furniture",
    "level": 4
  },
  {
    "code": "12 56 51",
    "label": "Library Furniture",
    "level": 4
  },
  {
    "code": "12 56 51.13",
    "label": "Book Shelves",
    "level": 5
  },
  {
    "code": "12 56 51.16",
    "label": "Study Carrels",
    "level": 5
  },
  {
    "code": "12 56 51.19",
    "label": "Index Card File Cabinets",
    "level": 5
  },
  {
    "code": "12 56 52",
    "label": "Audio-Visual Furniture",
    "level": 4
  },
  {
    "code": "12 56 53",
    "label": "Laboratory Furniture",
    "level": 4
  },
  {
    "code": "12 56 70",
    "label": "Healthcare Furniture",
    "level": 4
  },
  {
    "code": "12 56 83",
    "label": "Custom Institutional Furniture",
    "level": 4
  },
  {
    "code": "12 56 86",
    "label": "Institutional Control Room Furniture",
    "level": 4
  },
  {
    "code": "12 57 00",
    "label": "Industrial Furniture",
    "level": 3
  },
  {
    "code": "12 57 13",
    "label": "Welding Benches",
    "level": 4
  },
  {
    "code": "12 57 16",
    "label": "Welding Screens",
    "level": 4
  },
  {
    "code": "12 57 19",
    "label": "Laser Containment Screens",
    "level": 4
  },
  {
    "code": "12 57 83",
    "label": "Custom Industrial Furniture",
    "level": 4
  },
  {
    "code": "12 57 86",
    "label": "Industrial Control Room Furniture",
    "level": 4
  },
  {
    "code": "12 58 00",
    "label": "Residential Furniture",
    "level": 3
  },
  {
    "code": "12 58 13",
    "label": "Couches and Loveseats",
    "level": 4
  },
  {
    "code": "12 58 13.13",
    "label": "Futons",
    "level": 5
  },
  {
    "code": "12 58 16",
    "label": "Residential Chairs",
    "level": 4
  },
  {
    "code": "12 58 16.13",
    "label": "Reclining Chairs",
    "level": 5
  },
  {
    "code": "12 58 19",
    "label": "Dining Tables and Chairs",
    "level": 4
  },
  {
    "code": "12 58 23",
    "label": "Coffee Tables",
    "level": 4
  },
  {
    "code": "12 58 26",
    "label": "Entertainment Centers",
    "level": 4
  },
  {
    "code": "12 58 29",
    "label": "Beds",
    "level": 4
  },
  {
    "code": "12 58 29.13",
    "label": "Daybeds",
    "level": 5
  },
  {
    "code": "12 58 33",
    "label": "Dressers",
    "level": 4
  },
  {
    "code": "12 58 33.13",
    "label": "Armoires",
    "level": 5
  },
  {
    "code": "12 58 36",
    "label": "Nightstands",
    "level": 4
  },
  {
    "code": "12 58 83",
    "label": "Custom Residential Furniture",
    "level": 4
  },
  {
    "code": "12 59 00",
    "label": "Systems Furniture",
    "level": 3
  },
  {
    "code": "12 59 13",
    "label": "Panel-Hung Component System Furniture",
    "level": 4
  },
  {
    "code": "12 59 16",
    "label": "Free-Standing Component System Furniture",
    "level": 4
  },
  {
    "code": "12 59 19",
    "label": "Beam System Furniture",
    "level": 4
  },
  {
    "code": "12 59 23",
    "label": "Desk System Furniture",
    "level": 4
  },
  {
    "code": "12 59 83",
    "label": "Custom Systems Furniture",
    "level": 4
  },
  {
    "code": "12 60 00",
    "label": "Multiple Seating",
    "level": 2
  },
  {
    "code": "12 61 00",
    "label": "Fixed Audience Seating",
    "level": 3
  },
  {
    "code": "12 61 13",
    "label": "Upholstered Audience Seating",
    "level": 4
  },
  {
    "code": "12 61 16",
    "label": "Molded-Plastic Audience Seating",
    "level": 4
  },
  {
    "code": "12 62 00",
    "label": "Portable Audience Seating",
    "level": 3
  },
  {
    "code": "12 62 13",
    "label": "Folding Chairs",
    "level": 4
  },
  {
    "code": "12 62 16",
    "label": "Interlocking Chairs",
    "level": 4
  },
  {
    "code": "12 62 19",
    "label": "Stacking Chairs",
    "level": 4
  },
  {
    "code": "12 62 23",
    "label": "Portable Bleachers",
    "level": 4
  },
  {
    "code": "12 63 00",
    "label": "Stadium and Arena Seating",
    "level": 3
  },
  {
    "code": "12 63 13",
    "label": "Stadium and Arena Bench Seating",
    "level": 4
  },
  {
    "code": "12 63 23",
    "label": "Stadium and Arena Seats",
    "level": 4
  },
  {
    "code": "12 64 00",
    "label": "Booths and Tables",
    "level": 3
  },
  {
    "code": "12 65 00",
    "label": "Multiple-Use Fixed Seating",
    "level": 3
  },
  {
    "code": "12 66 00",
    "label": "Telescoping Stands",
    "level": 3
  },
  {
    "code": "12 66 13",
    "label": "Telescoping Bleachers",
    "level": 4
  },
  {
    "code": "12 66 23",
    "label": "Telescoping Chair Platforms",
    "level": 4
  },
  {
    "code": "12 67 00",
    "label": "Pews and Benches",
    "level": 3
  },
  {
    "code": "12 67 13",
    "label": "Pews",
    "level": 4
  },
  {
    "code": "12 67 23",
    "label": "Benches",
    "level": 4
  },
  {
    "code": "12 68 00",
    "label": "Seat and Table Assemblies",
    "level": 3
  },
  {
    "code": "12 68 13",
    "label": "Pedestal Tablet Arm Chairs",
    "level": 4
  },
  {
    "code": "12 90 00",
    "label": "Other Furnishings",
    "level": 2
  },
  {
    "code": "12 92 00",
    "label": "Interior Planters and Artificial Plants",
    "level": 3
  },
  {
    "code": "12 92 13",
    "label": "Interior Artificial Plants",
    "level": 4
  },
  {
    "code": "12 92 33",
    "label": "Interior Planters",
    "level": 4
  },
  {
    "code": "12 92 43",
    "label": "Interior Landscaping Accessories",
    "level": 4
  },
  {
    "code": "12 93 00",
    "label": "Interior Public Space Furnishings",
    "level": 3
  },
  {
    "code": "12 93 13",
    "label": "Bicycle Racks",
    "level": 4
  },
  {
    "code": "12 93 14",
    "label": "Bicycle Lockers",
    "level": 4
  },
  {
    "code": "12 93 23",
    "label": "Trash and Litter Receptacles",
    "level": 4
  },
  {
    "code": "13 00 00",
    "label": "Special Construction",
    "level": 1
  },
  {
    "code": "13 01 00",
    "label": "Operation and Maintenance of Special Construction",
    "level": 3
  },
  {
    "code": "13 01 10",
    "label": "Operation and Maintenance of Special Facility Components",
    "level": 4
  },
  {
    "code": "13 01 11",
    "label": "Operation and Maintenance of Swimming Pools",
    "level": 4
  },
  {
    "code": "13 01 12",
    "label": "Operation and Maintenance of Fountains",
    "level": 4
  },
  {
    "code": "13 01 13",
    "label": "Operation and Maintenance of Aquariums",
    "level": 4
  },
  {
    "code": "13 01 14",
    "label": "Operation and Maintenance of Amusement Park Structures and Equipment",
    "level": 4
  },
  {
    "code": "13 01 18",
    "label": "Operation and Maintenance of Ice Rinks",
    "level": 4
  },
  {
    "code": "13 01 20",
    "label": "Operation and Maintenance of Special Purpose Rooms",
    "level": 4
  },
  {
    "code": "13 01 21",
    "label": "Operation and Maintenance of Controlled Environment Rooms",
    "level": 4
  },
  {
    "code": "13 01 23",
    "label": "Operation and Maintenance of Planetariums",
    "level": 4
  },
  {
    "code": "13 01 30",
    "label": "Operation and Maintenance of Special Structures",
    "level": 4
  },
  {
    "code": "13 01 40",
    "label": "Operation and Maintenance of Integrated Construction",
    "level": 4
  },
  {
    "code": "13 01 49",
    "label": "Operation and Maintenance of Radiation Protection",
    "level": 4
  },
  {
    "code": "13 01 50",
    "label": "Operation and Maintenance of Special Instrumentation",
    "level": 4
  },
  {
    "code": "13 01 51",
    "label": "Operation and Maintenance of Stress Instrumentation",
    "level": 4
  },
  {
    "code": "13 01 52",
    "label": "Operation and Maintenance of Seismic Instrumentation",
    "level": 4
  },
  {
    "code": "13 01 53",
    "label": "Operation and Maintenance of Meteorological Instrumentation",
    "level": 4
  },
  {
    "code": "13 05 00",
    "label": "Common Work Results for Special Construction",
    "level": 3
  },
  {
    "code": "13 05 05",
    "label": "Selective Demolition for Special Construction",
    "level": 4
  },
  {
    "code": "13 06 00",
    "label": "Schedules for Special Construction",
    "level": 3
  },
  {
    "code": "13 06 10",
    "label": "Schedules for Special Facility Components",
    "level": 4
  },
  {
    "code": "13 06 20",
    "label": "Schedules for Special Purpose Rooms",
    "level": 4
  },
  {
    "code": "13 06 30",
    "label": "Schedules for Special Structures",
    "level": 4
  },
  {
    "code": "13 06 40",
    "label": "Schedules for Integrated Construction",
    "level": 4
  },
  {
    "code": "13 06 50",
    "label": "Schedules for Special Instrumentation",
    "level": 4
  },
  {
    "code": "13 08 00",
    "label": "Commissioning of Special Construction",
    "level": 3
  },
  {
    "code": "13 08 10",
    "label": "Commissioning of Special Facility Components",
    "level": 4
  },
  {
    "code": "13 08 11",
    "label": "Commissioning of Swimming Pools",
    "level": 4
  },
  {
    "code": "13 08 12",
    "label": "Commissioning of Fountains",
    "level": 4
  },
  {
    "code": "13 08 13",
    "label": "Commissioning of Aquariums",
    "level": 4
  },
  {
    "code": "13 08 14",
    "label": "Commissioning of Amusement Park Structures and Equipment",
    "level": 4
  },
  {
    "code": "13 08 18",
    "label": "Commissioning of Ice Rinks",
    "level": 4
  },
  {
    "code": "13 08 20",
    "label": "Commissioning of Special Purpose Rooms",
    "level": 4
  },
  {
    "code": "13 08 21",
    "label": "Commissioning of Controlled Environment Rooms",
    "level": 4
  },
  {
    "code": "13 08 23",
    "label": "Commissioning of Planetariums",
    "level": 4
  },
  {
    "code": "13 08 30",
    "label": "Commissioning of Special Structures",
    "level": 4
  },
  {
    "code": "13 08 40",
    "label": "Commissioning of Integrated Construction",
    "level": 4
  },
  {
    "code": "13 08 50",
    "label": "Commissioning of Special Instrumentation",
    "level": 4
  },
  {
    "code": "13 10 00",
    "label": "Special Facility Components",
    "level": 2
  },
  {
    "code": "13 11 00",
    "label": "Swimming Pools",
    "level": 3
  },
  {
    "code": "13 11 13",
    "label": "Below-Grade Swimming Pools",
    "level": 4
  },
  {
    "code": "13 11 23",
    "label": "On-Grade Swimming Pools",
    "level": 4
  },
  {
    "code": "13 11 33",
    "label": "Elevated Swimming Pools",
    "level": 4
  },
  {
    "code": "13 11 43",
    "label": "Recirculating Gutter Systems",
    "level": 4
  },
  {
    "code": "13 11 46",
    "label": "Swimming Pool Accessories",
    "level": 4
  },
  {
    "code": "13 11 49",
    "label": "Swimming Pool Cleaning Equipment",
    "level": 4
  },
  {
    "code": "13 11 53",
    "label": "Movable Pool Bulkheads",
    "level": 4
  },
  {
    "code": "13 11 56",
    "label": "Movable Pool Floors",
    "level": 4
  },
  {
    "code": "13 12 00",
    "label": "Fountains",
    "level": 3
  },
  {
    "code": "13 12 13",
    "label": "Exterior Fountains",
    "level": 4
  },
  {
    "code": "13 12 23",
    "label": "Interior Fountains",
    "level": 4
  },
  {
    "code": "13 13 00",
    "label": "Aquariums",
    "level": 3
  },
  {
    "code": "13 14 00",
    "label": "Amusement Park Structures and Equipment",
    "level": 3
  },
  {
    "code": "13 14 13",
    "label": "Water Slides",
    "level": 4
  },
  {
    "code": "13 14 16",
    "label": "Wave Generating Equipment",
    "level": 4
  },
  {
    "code": "13 14 23",
    "label": "Amusement Park Rides",
    "level": 4
  },
  {
    "code": "13 15 00",
    "label": "Specialty Element Construction",
    "level": 3
  },
  {
    "code": "13 17 00",
    "label": "Tubs and Pools",
    "level": 3
  },
  {
    "code": "13 17 13",
    "label": "Hot Tubs",
    "level": 4
  },
  {
    "code": "13 17 23",
    "label": "Therapeutic Pools",
    "level": 4
  },
  {
    "code": "13 17 33",
    "label": "Whirlpool Tubs",
    "level": 4
  },
  {
    "code": "13 18 00",
    "label": "Ice Rinks",
    "level": 3
  },
  {
    "code": "13 18 13",
    "label": "Ice Rink Floor Systems",
    "level": 4
  },
  {
    "code": "13 18 16",
    "label": "Ice Rink Dasher Boards",
    "level": 4
  },
  {
    "code": "13 19 00",
    "label": "Kennels and Animal Shelters",
    "level": 3
  },
  {
    "code": "13 19 13",
    "label": "Kennel Enclosures and Gates",
    "level": 4
  },
  {
    "code": "13 19 16",
    "label": "Kennel Feeding Devices",
    "level": 4
  },
  {
    "code": "13 19 19",
    "label": "Animal Washing Tubs",
    "level": 4
  },
  {
    "code": "13 20 00",
    "label": "Special Purpose Rooms",
    "level": 2
  },
  {
    "code": "13 21 00",
    "label": "Controlled Environment Rooms",
    "level": 3
  },
  {
    "code": "13 21 13",
    "label": "Clean Rooms",
    "level": 4
  },
  {
    "code": "13 21 16",
    "label": "Hyperbaric Rooms",
    "level": 4
  },
  {
    "code": "13 21 23",
    "label": "Insulated Rooms",
    "level": 4
  },
  {
    "code": "13 21 26",
    "label": "Cold Storage Rooms",
    "level": 4
  },
  {
    "code": "13 21 26.13",
    "label": "Walk-in Coolers",
    "level": 5
  },
  {
    "code": "13 21 26.16",
    "label": "Walk-in Freezers",
    "level": 5
  },
  {
    "code": "13 21 29",
    "label": "Constant Temperature Rooms",
    "level": 4
  },
  {
    "code": "13 21 48",
    "label": "Sound-Conditioned Rooms",
    "level": 4
  },
  {
    "code": "13 22 00",
    "label": "Office Shelters and Booths",
    "level": 3
  },
  {
    "code": "13 23 00",
    "label": "Planetariums",
    "level": 3
  },
  {
    "code": "13 24 00",
    "label": "Special Activity Rooms",
    "level": 3
  },
  {
    "code": "13 24 16",
    "label": "Saunas",
    "level": 4
  },
  {
    "code": "13 24 26",
    "label": "Steam Baths",
    "level": 4
  },
  {
    "code": "13 24 66",
    "label": "Athletic Rooms",
    "level": 4
  },
  {
    "code": "13 26 00",
    "label": "Fabricated Rooms",
    "level": 3
  },
  {
    "code": "13 26 13",
    "label": "Storm Shelter Rooms",
    "level": 4
  },
  {
    "code": "13 27 00",
    "label": "Vaults",
    "level": 3
  },
  {
    "code": "13 27 16",
    "label": "Modular Fire Vaults",
    "level": 4
  },
  {
    "code": "13 27 53",
    "label": "Security Vaults",
    "level": 4
  },
  {
    "code": "13 27 53.13",
    "label": "Modular Concrete Security Vaults",
    "level": 5
  },
  {
    "code": "13 27 53.16",
    "label": "Modular Metal-Clad Laminated Security Vaults",
    "level": 5
  },
  {
    "code": "13 28 00",
    "label": "Athletic and Recreational Special Construction",
    "level": 3
  },
  {
    "code": "13 28 13",
    "label": "Indoor Soccer Boards",
    "level": 4
  },
  {
    "code": "13 28 16",
    "label": "Safety Netting",
    "level": 4
  },
  {
    "code": "13 28 19",
    "label": "Arena Football Boards",
    "level": 4
  },
  {
    "code": "13 28 26",
    "label": "Floor Sockets",
    "level": 4
  },
  {
    "code": "13 28 33",
    "label": "Athletic and Recreational Court Walls",
    "level": 4
  },
  {
    "code": "13 28 66",
    "label": "Demountable Athletic Surfaces",
    "level": 4
  },
  {
    "code": "13 30 00",
    "label": "Special Structures",
    "level": 2
  },
  {
    "code": "13 31 00",
    "label": "Fabric Structures",
    "level": 3
  },
  {
    "code": "13 31 13",
    "label": "Air-Supported Fabric Structures",
    "level": 4
  },
  {
    "code": "13 31 13.13",
    "label": "Single-Walled Air-Supported Structures",
    "level": 5
  },
  {
    "code": "13 31 13.16",
    "label": "Multiple-Walled Air-Supported Structures",
    "level": 5
  },
  {
    "code": "13 31 23",
    "label": "Tensioned Fabric Structures",
    "level": 4
  },
  {
    "code": "13 31 33",
    "label": "Framed Fabric Structures",
    "level": 4
  },
  {
    "code": "13 32 00",
    "label": "Space Frames",
    "level": 3
  },
  {
    "code": "13 32 13",
    "label": "Metal Space Frames",
    "level": 4
  },
  {
    "code": "13 32 23",
    "label": "Wood Space Frames",
    "level": 4
  },
  {
    "code": "13 33 00",
    "label": "Geodesic Structures",
    "level": 3
  },
  {
    "code": "13 33 13",
    "label": "Geodesic Domes",
    "level": 4
  },
  {
    "code": "13 34 00",
    "label": "Fabricated Engineered Structures",
    "level": 3
  },
  {
    "code": "13 34 13",
    "label": "Glazed Structures",
    "level": 4
  },
  {
    "code": "13 34 13.13",
    "label": "Greenhouses",
    "level": 5
  },
  {
    "code": "13 34 13.16",
    "label": "Solariums",
    "level": 5
  },
  {
    "code": "13 34 13.19",
    "label": "Swimming Pool Enclosures",
    "level": 5
  },
  {
    "code": "13 34 13.23",
    "label": "Sunrooms",
    "level": 5
  },
  {
    "code": "13 34 13.26",
    "label": "Conservatories",
    "level": 5
  },
  {
    "code": "13 34 16",
    "label": "Grandstands and Bleachers",
    "level": 4
  },
  {
    "code": "13 34 16.13",
    "label": "Grandstands",
    "level": 5
  },
  {
    "code": "13 34 16.53",
    "label": "Bleachers",
    "level": 5
  },
  {
    "code": "13 34 18",
    "label": "Post Frame Building Systems",
    "level": 4
  },
  {
    "code": "13 34 19",
    "label": "Metal Building Systems",
    "level": 4
  },
  {
    "code": "13 34 23",
    "label": "Fabricated Structures",
    "level": 4
  },
  {
    "code": "13 34 23.13",
    "label": "Portable and Mobile Buildings",
    "level": 5
  },
  {
    "code": "13 34 23.14",
    "label": "Fabricated Classroom Buildings",
    "level": 5
  },
  {
    "code": "13 34 23.16",
    "label": "Fabricated Control Booths",
    "level": 5
  },
  {
    "code": "13 34 23.19",
    "label": "Fabricated Dome Structures",
    "level": 5
  },
  {
    "code": "13 34 23.23",
    "label": "Fabricated Substation Control Rooms",
    "level": 5
  },
  {
    "code": "13 34 56",
    "label": "Observatories",
    "level": 4
  },
  {
    "code": "13 35 00",
    "label": "Rammed Earth Construction",
    "level": 3
  },
  {
    "code": "13 35 13",
    "label": "Rammed Earth Walls",
    "level": 4
  },
  {
    "code": "13 35 13.13",
    "label": "Traditional Rammed Earth Walls",
    "level": 5
  },
  {
    "code": "13 35 13.23",
    "label": "Stabilized Insulated Rammed Earth Walls",
    "level": 5
  },
  {
    "code": "13 36 00",
    "label": "Towers",
    "level": 3
  },
  {
    "code": "13 36 13",
    "label": "Metal Towers",
    "level": 4
  },
  {
    "code": "13 36 13.13",
    "label": "Steel Towers",
    "level": 5
  },
  {
    "code": "13 36 23",
    "label": "Wood Towers",
    "level": 4
  },
  {
    "code": "13 40 00",
    "label": "Integrated Construction",
    "level": 2
  },
  {
    "code": "13 42 00",
    "label": "Building Modules",
    "level": 3
  },
  {
    "code": "13 42 13",
    "label": "Bathroom Unit Modules",
    "level": 4
  },
  {
    "code": "13 42 25",
    "label": "Hospitality Unit Modules",
    "level": 4
  },
  {
    "code": "13 42 33",
    "label": "Apartment Unit Modules",
    "level": 4
  },
  {
    "code": "13 42 43",
    "label": "Dormitory Unit Modules",
    "level": 4
  },
  {
    "code": "13 42 46",
    "label": "Education Unit Modules",
    "level": 4
  },
  {
    "code": "13 42 63",
    "label": "Detention Cell Modules",
    "level": 4
  },
  {
    "code": "13 42 63.13",
    "label": "Precast-Concrete Detention Cell Modules",
    "level": 5
  },
  {
    "code": "13 42 63.16",
    "label": "Steel Detention Cell Modules",
    "level": 5
  },
  {
    "code": "13 44 00",
    "label": "Modular Mezzanines",
    "level": 3
  },
  {
    "code": "13 47 00",
    "label": "Facility Protection",
    "level": 3
  },
  {
    "code": "13 47 13",
    "label": "Cathodic Protection",
    "level": 4
  },
  {
    "code": "13 47 13.13",
    "label": "Cathodic Protection for Underground and Submerged Piping",
    "level": 5
  },
  {
    "code": "13 47 13.16",
    "label": "Cathodic Protection for Underground Storage Tanks",
    "level": 5
  },
  {
    "code": "13 47 13.19",
    "label": "Cathodic Protection for Concrete Reinforcing",
    "level": 5
  },
  {
    "code": "13 48 00",
    "label": "Sound, Vibration, and Seismic Control",
    "level": 3
  },
  {
    "code": "13 48 13",
    "label": "Manufactured Sound and Vibration Control Components",
    "level": 4
  },
  {
    "code": "13 48 23",
    "label": "Fabricated Sound and Vibration Control Assemblies",
    "level": 4
  },
  {
    "code": "13 48 53",
    "label": "Manufactured Seismic Control Components",
    "level": 4
  },
  {
    "code": "13 48 63",
    "label": "Fabricated Seismic Control Assemblies",
    "level": 4
  },
  {
    "code": "13 49 00",
    "label": "Radiation Protection",
    "level": 3
  },
  {
    "code": "13 49 13",
    "label": "Integrated X-Ray Shielding Assemblies",
    "level": 4
  },
  {
    "code": "13 49 16",
    "label": "Modular X-Ray Shielding Rooms",
    "level": 4
  },
  {
    "code": "13 49 23",
    "label": "Integrated RFI/EMI Shielding Assemblies",
    "level": 4
  },
  {
    "code": "13 49 26",
    "label": "Modular RFI/EMI Shielding Rooms",
    "level": 4
  },
  {
    "code": "13 50 00",
    "label": "Special Instrumentation",
    "level": 2
  },
  {
    "code": "13 51 00",
    "label": "Stress Instrumentation",
    "level": 3
  },
  {
    "code": "13 52 00",
    "label": "Seismic Instrumentation",
    "level": 3
  },
  {
    "code": "13 53 00",
    "label": "Meteorological Instrumentation",
    "level": 3
  },
  {
    "code": "13 53 13",
    "label": "Solar Instrumentation",
    "level": 4
  },
  {
    "code": "13 53 23",
    "label": "Wind Instrumentation",
    "level": 4
  },
  {
    "code": "14 00 00",
    "label": "Conveying Equipment",
    "level": 1
  },
  {
    "code": "14 01 00",
    "label": "Operation and Maintenance of Conveying Equipment",
    "level": 3
  },
  {
    "code": "14 01 10",
    "label": "Operation and Maintenance of Dumbwaiters",
    "level": 4
  },
  {
    "code": "14 01 10.71",
    "label": "Dumbwaiter Rehabilitation",
    "level": 5
  },
  {
    "code": "14 01 20",
    "label": "Operation and Maintenance of Elevators",
    "level": 4
  },
  {
    "code": "14 01 20.71",
    "label": "Elevator Rehabilitation",
    "level": 5
  },
  {
    "code": "14 01 30",
    "label": "Operation and Maintenance of Escalators and Moving Walks",
    "level": 4
  },
  {
    "code": "14 01 30.71",
    "label": "Escalators and Moving Walks Rehabilitation",
    "level": 5
  },
  {
    "code": "14 01 40",
    "label": "Operation and Maintenance of Lifts",
    "level": 4
  },
  {
    "code": "14 01 40.71",
    "label": "Lift Rehabilitation",
    "level": 5
  },
  {
    "code": "14 01 70",
    "label": "Operation and Maintenance of Turntables",
    "level": 4
  },
  {
    "code": "14 01 80",
    "label": "Operation and Maintenance of Scaffolding",
    "level": 4
  },
  {
    "code": "14 01 90",
    "label": "Operation and Maintenance of Other Conveying Equipment",
    "level": 4
  },
  {
    "code": "14 05 00",
    "label": "Common Work Results for Conveying Equipment",
    "level": 3
  },
  {
    "code": "14 05 05",
    "label": "Selective Demolition for Conveying Equipment",
    "level": 4
  },
  {
    "code": "14 06 00",
    "label": "Schedules for Conveying Equipment",
    "level": 3
  },
  {
    "code": "14 06 10",
    "label": "Schedules for Dumbwaiters",
    "level": 4
  },
  {
    "code": "14 06 20",
    "label": "Schedules for Elevators",
    "level": 4
  },
  {
    "code": "14 06 20.13",
    "label": "Elevator Equipment Schedule",
    "level": 5
  },
  {
    "code": "14 06 30",
    "label": "Schedules for Escalators and Moving Walks",
    "level": 4
  },
  {
    "code": "14 06 40",
    "label": "Schedules for Lifts",
    "level": 4
  },
  {
    "code": "14 06 40.13",
    "label": "Lift Schedule",
    "level": 5
  },
  {
    "code": "14 06 70",
    "label": "Schedules for Turntables",
    "level": 4
  },
  {
    "code": "14 06 80",
    "label": "Schedules for Scaffolding",
    "level": 4
  },
  {
    "code": "14 06 90",
    "label": "Schedules for Other Conveying Equipment",
    "level": 4
  },
  {
    "code": "14 08 00",
    "label": "Commissioning of Conveying Equipment",
    "level": 3
  },
  {
    "code": "14 08 10",
    "label": "Commissioning of Dumbwaiters",
    "level": 4
  },
  {
    "code": "14 08 20",
    "label": "Commissioning of Elevators",
    "level": 4
  },
  {
    "code": "14 08 30",
    "label": "Commissioning of Escalators and Moving Walks",
    "level": 4
  },
  {
    "code": "14 08 40",
    "label": "Commissioning of Lifts",
    "level": 4
  },
  {
    "code": "14 08 70",
    "label": "Commissioning of Turntables",
    "level": 4
  },
  {
    "code": "14 08 80",
    "label": "Commissioning of Scaffolding",
    "level": 4
  },
  {
    "code": "14 10 00",
    "label": "Dumbwaiters",
    "level": 2
  },
  {
    "code": "14 11 00",
    "label": "Manual Dumbwaiters",
    "level": 3
  },
  {
    "code": "14 12 00",
    "label": "Electric Dumbwaiters",
    "level": 3
  },
  {
    "code": "14 14 00",
    "label": "Hydraulic Dumbwaiters",
    "level": 3
  },
  {
    "code": "14 20 00",
    "label": "Elevators",
    "level": 2
  },
  {
    "code": "14 21 00",
    "label": "Electric Traction Elevators",
    "level": 3
  },
  {
    "code": "14 21 13",
    "label": "Electric Traction Freight Elevators",
    "level": 4
  },
  {
    "code": "14 21 23",
    "label": "Electric Traction Passenger Elevators",
    "level": 4
  },
  {
    "code": "14 21 23.13",
    "label": "Machine Room Electric Traction Passenger Elevators",
    "level": 5
  },
  {
    "code": "14 21 23.16",
    "label": "Machine Room-Less Electric Traction Passenger Elevators",
    "level": 5
  },
  {
    "code": "14 21 33",
    "label": "Electric Traction Residential Elevators",
    "level": 4
  },
  {
    "code": "14 21 43",
    "label": "Electric Traction Service Elevators",
    "level": 4
  },
  {
    "code": "14 24 00",
    "label": "Hydraulic Elevators",
    "level": 3
  },
  {
    "code": "14 24 13",
    "label": "Hydraulic Freight Elevators",
    "level": 4
  },
  {
    "code": "14 24 23",
    "label": "Hydraulic Passenger Elevators",
    "level": 4
  },
  {
    "code": "14 24 33",
    "label": "Hydraulic Residential Elevators",
    "level": 4
  },
  {
    "code": "14 24 43",
    "label": "Hydraulic Service Elevators",
    "level": 4
  },
  {
    "code": "14 26 00",
    "label": "Limited-Use/Limited-Application Elevators",
    "level": 3
  },
  {
    "code": "14 27 00",
    "label": "Custom Elevator Cabs and Doors",
    "level": 3
  },
  {
    "code": "14 27 13",
    "label": "Custom Elevator Cab Finishes",
    "level": 4
  },
  {
    "code": "14 27 16",
    "label": "Custom Elevator Doors",
    "level": 4
  },
  {
    "code": "14 28 00",
    "label": "Elevator Equipment and Controls",
    "level": 3
  },
  {
    "code": "14 28 16",
    "label": "Elevator Controls",
    "level": 4
  },
  {
    "code": "14 28 19",
    "label": "Elevator Equipment",
    "level": 4
  },
  {
    "code": "14 28 19.13",
    "label": "Elevator Safety Equipment",
    "level": 5
  },
  {
    "code": "14 28 19.16",
    "label": "Elevator Hoistway Equipment",
    "level": 5
  },
  {
    "code": "14 30 00",
    "label": "Escalators and Moving Walks",
    "level": 2
  },
  {
    "code": "14 31 00",
    "label": "Escalators",
    "level": 3
  },
  {
    "code": "14 32 00",
    "label": "Moving Walks",
    "level": 3
  },
  {
    "code": "14 33 00",
    "label": "Moving Ramps",
    "level": 3
  },
  {
    "code": "14 33 13",
    "label": "Motorized Ramps",
    "level": 4
  },
  {
    "code": "14 33 16",
    "label": "Powered Ramps",
    "level": 4
  },
  {
    "code": "14 40 00",
    "label": "Lifts",
    "level": 2
  },
  {
    "code": "14 41 00",
    "label": "People Lifts",
    "level": 3
  },
  {
    "code": "14 41 13",
    "label": "Counterbalanced People Lifts",
    "level": 4
  },
  {
    "code": "14 41 16",
    "label": "Endless-Belt People Lifts",
    "level": 4
  },
  {
    "code": "14 41 19",
    "label": "Stairway Chairlifts",
    "level": 4
  },
  {
    "code": "14 42 00",
    "label": "Wheelchair Lifts",
    "level": 3
  },
  {
    "code": "14 42 13",
    "label": "Inclined Wheelchair Lifts",
    "level": 4
  },
  {
    "code": "14 42 16",
    "label": "Vertical Wheelchair Lifts",
    "level": 4
  },
  {
    "code": "14 43 00",
    "label": "Platform Lifts",
    "level": 3
  },
  {
    "code": "14 43 13",
    "label": "Orchestra Lifts",
    "level": 4
  },
  {
    "code": "14 43 16",
    "label": "Stage Lifts",
    "level": 4
  },
  {
    "code": "14 44 00",
    "label": "Sidewalk Lifts",
    "level": 3
  },
  {
    "code": "14 45 00",
    "label": "Vehicle Lifts",
    "level": 3
  },
  {
    "code": "14 45 13",
    "label": "Vehicle Service Lifts",
    "level": 4
  },
  {
    "code": "14 45 23",
    "label": "Vehicle Parking Lifts",
    "level": 4
  },
  {
    "code": "14 46 00",
    "label": "Material Lifts",
    "level": 3
  },
  {
    "code": "14 70 00",
    "label": "Turntables",
    "level": 2
  },
  {
    "code": "14 71 00",
    "label": "Industrial Turntables",
    "level": 3
  },
  {
    "code": "14 71 11",
    "label": "Vehicle Turntables",
    "level": 4
  },
  {
    "code": "14 72 00",
    "label": "Hospitality Turntables",
    "level": 3
  },
  {
    "code": "14 72 25",
    "label": "Restaurant Turntables",
    "level": 4
  },
  {
    "code": "14 73 00",
    "label": "Exhibit Turntables",
    "level": 3
  },
  {
    "code": "14 73 59",
    "label": "Display Turntables",
    "level": 4
  },
  {
    "code": "14 74 00",
    "label": "Entertainment Turntables",
    "level": 3
  },
  {
    "code": "14 74 61",
    "label": "Stage Turntables",
    "level": 4
  },
  {
    "code": "14 80 00",
    "label": "Scaffolding",
    "level": 2
  },
  {
    "code": "14 81 00",
    "label": "Suspended Scaffolding",
    "level": 3
  },
  {
    "code": "14 81 13",
    "label": "Beam Scaffolding",
    "level": 4
  },
  {
    "code": "14 81 16",
    "label": "Carriage Scaffolding",
    "level": 4
  },
  {
    "code": "14 81 19",
    "label": "Hook Scaffolding",
    "level": 4
  },
  {
    "code": "14 82 00",
    "label": "Rope Climbers",
    "level": 3
  },
  {
    "code": "14 82 13",
    "label": "Manual Rope Climbers",
    "level": 4
  },
  {
    "code": "14 82 16",
    "label": "Powered Rope Climbers",
    "level": 4
  },
  {
    "code": "14 83 00",
    "label": "Elevating Platforms",
    "level": 3
  },
  {
    "code": "14 83 13",
    "label": "Telescoping Platform Lifts",
    "level": 4
  },
  {
    "code": "14 83 13.13",
    "label": "Electric and Battery Telescoping Platform Lifts",
    "level": 5
  },
  {
    "code": "14 83 13.16",
    "label": "Pneumatic Telescoping Platform Lifts",
    "level": 5
  },
  {
    "code": "14 83 16",
    "label": "Scissor Lift Platforms",
    "level": 4
  },
  {
    "code": "14 83 19",
    "label": "Multi-Axis Platform Lifts",
    "level": 4
  },
  {
    "code": "14 84 00",
    "label": "Powered Scaffolding",
    "level": 3
  },
  {
    "code": "14 84 13",
    "label": "Window Washing Scaffolding",
    "level": 4
  },
  {
    "code": "14 84 23",
    "label": "Window Washing Hoists",
    "level": 4
  },
  {
    "code": "14 90 00",
    "label": "Other Conveying Equipment",
    "level": 2
  },
  {
    "code": "14 91 00",
    "label": "Facility Chutes",
    "level": 3
  },
  {
    "code": "14 91 13",
    "label": "Coal Chutes",
    "level": 4
  },
  {
    "code": "14 91 23",
    "label": "Escape Chutes",
    "level": 4
  },
  {
    "code": "14 91 33",
    "label": "Laundry and Linen Chutes",
    "level": 4
  },
  {
    "code": "14 91 82",
    "label": "Trash Chutes",
    "level": 4
  },
  {
    "code": "14 92 00",
    "label": "Pneumatic Tube Systems",
    "level": 3
  },
  {
    "code": "14 93 00",
    "label": "Slide Pole Systems",
    "level": 3
  },
  {
    "code": "14 93 13",
    "label": "Firehouse Slide Poles",
    "level": 4
  },
  {
    "code": "21 00 00",
    "label": "Fire Suppression",
    "level": 1
  },
  {
    "code": "21 01 00",
    "label": "Operation and Maintenance of Fire Suppression",
    "level": 3
  },
  {
    "code": "21 01 10",
    "label": "Operation and Maintenance of Water-Based Fire-Suppression Systems",
    "level": 4
  },
  {
    "code": "21 01 20",
    "label": "Operation and Maintenance of Fire-Extinguishing Systems",
    "level": 4
  },
  {
    "code": "21 01 30",
    "label": "Operation and Maintenance of Fire-Suppression Equipment",
    "level": 4
  },
  {
    "code": "21 05 00",
    "label": "Common Work Results for Fire Suppression",
    "level": 3
  },
  {
    "code": "21 05 05",
    "label": "Selective Demolition for Fire Suppression",
    "level": 4
  },
  {
    "code": "21 05 13",
    "label": "Common Motor Requirements for Fire-Suppression Equipment",
    "level": 4
  },
  {
    "code": "21 05 16",
    "label": "Expansion Fittings and Loops for Fire-Suppression Piping",
    "level": 4
  },
  {
    "code": "21 05 17",
    "label": "Sleeves and Sleeve Seals for Fire-Suppression Piping",
    "level": 4
  },
  {
    "code": "21 05 19",
    "label": "Meters and Gages for Fire-Suppression Systems",
    "level": 4
  },
  {
    "code": "21 05 23",
    "label": "General-Duty Valves for Water-Based Fire-Suppression Piping",
    "level": 4
  },
  {
    "code": "21 05 29",
    "label": "Hangers and Supports for Fire-Suppression Piping and Equipment",
    "level": 4
  },
  {
    "code": "21 05 33",
    "label": "Heat Tracing for Fire-Suppression Piping",
    "level": 4
  },
  {
    "code": "21 05 48",
    "label": "Vibration and Seismic Controls for Fire-Suppression Piping and Equipment",
    "level": 4
  },
  {
    "code": "21 05 48.13",
    "label": "Vibration Controls for Fire-Suppresion Piping and Equipment",
    "level": 5
  },
  {
    "code": "21 05 53",
    "label": "Identification for Fire-Suppression Piping and Equipment",
    "level": 4
  },
  {
    "code": "21 06 00",
    "label": "Schedules for Fire Suppression",
    "level": 3
  },
  {
    "code": "21 06 10",
    "label": "Schedules for Water-Based Fire-Suppression Systems",
    "level": 4
  },
  {
    "code": "21 06 20",
    "label": "Schedules for Fire-Extinguishing Systems",
    "level": 4
  },
  {
    "code": "21 06 30",
    "label": "Schedules for Fire-Suppression Equipment",
    "level": 4
  },
  {
    "code": "21 07 00",
    "label": "Fire Suppression Systems Insulation",
    "level": 3
  },
  {
    "code": "21 07 16",
    "label": "Fire-Suppression Equipment Insulation",
    "level": 4
  },
  {
    "code": "21 07 19",
    "label": "Fire-Suppression Piping Insulation",
    "level": 4
  },
  {
    "code": "21 08 00",
    "label": "Commissioning of Fire Suppression",
    "level": 3
  },
  {
    "code": "21 09 00",
    "label": "Instrumentation and Control for Fire-Suppression Systems",
    "level": 3
  },
  {
    "code": "21 10 00",
    "label": "Water-Based Fire-Suppression Systems",
    "level": 2
  },
  {
    "code": "21 11 00",
    "label": "Facility Fire-Suppression Water-Service Piping",
    "level": 3
  },
  {
    "code": "21 11 16",
    "label": "Facility Fire Hydrants",
    "level": 4
  },
  {
    "code": "21 11 19",
    "label": "Fire-Department Connections",
    "level": 4
  },
  {
    "code": "21 12 00",
    "label": "Fire-Suppression Standpipes",
    "level": 3
  },
  {
    "code": "21 12 13",
    "label": "Fire-Suppression Hoses and Nozzles",
    "level": 4
  },
  {
    "code": "21 12 16",
    "label": "Fire-Suppression Hose Reels",
    "level": 4
  },
  {
    "code": "21 12 19",
    "label": "Fire-Suppression Hose Racks",
    "level": 4
  },
  {
    "code": "21 12 23",
    "label": "Fire-Suppression Hose Valves",
    "level": 4
  },
  {
    "code": "21 13 00",
    "label": "Fire-Suppression Sprinkler Systems",
    "level": 3
  },
  {
    "code": "21 13 13",
    "label": "Wet-Pipe Sprinkler Systems",
    "level": 4
  },
  {
    "code": "21 13 16",
    "label": "Dry-Pipe Sprinkler Systems",
    "level": 4
  },
  {
    "code": "21 13 19",
    "label": "Preaction Sprinkler Systems",
    "level": 4
  },
  {
    "code": "21 13 23",
    "label": "Combined Dry-Pipe and Preaction Sprinkler Systems",
    "level": 4
  },
  {
    "code": "21 13 26",
    "label": "Deluge Fire-Suppression Sprinkler Systems",
    "level": 4
  },
  {
    "code": "21 13 29",
    "label": "Water Spray Fixed Systems",
    "level": 4
  },
  {
    "code": "21 13 36",
    "label": "Antifreeze Sprinkler Systems",
    "level": 4
  },
  {
    "code": "21 13 39",
    "label": "Foam-Water Systems",
    "level": 4
  },
  {
    "code": "21 16 00",
    "label": "Fire-Suppression Pressure Maintenance Pumps",
    "level": 3
  },
  {
    "code": "21 20 00",
    "label": "Fire-Extinguishing Systems",
    "level": 2
  },
  {
    "code": "21 21 00",
    "label": "Carbon-Dioxide Fire-Extinguishing Systems",
    "level": 3
  },
  {
    "code": "21 21 13",
    "label": "Carbon-Dioxide Fire-Extinguishing Piping",
    "level": 4
  },
  {
    "code": "21 21 13.13",
    "label": "High-Pressure, Carbon-Dioxide Fire-Extinguishing Systems",
    "level": 5
  },
  {
    "code": "21 21 13.16",
    "label": "Low-Pressure, Carbon-Dioxide Fire-Extinguishing Systems",
    "level": 5
  },
  {
    "code": "21 21 16",
    "label": "Carbon-Dioxide Fire-Extinguishing Equipment",
    "level": 4
  },
  {
    "code": "21 22 00",
    "label": "Clean-Agent Fire-Extinguishing Systems",
    "level": 3
  },
  {
    "code": "21 22 13",
    "label": "Clean-Agent Fire-Extinguishing Piping",
    "level": 4
  },
  {
    "code": "21 22 16",
    "label": "Clean-Agent Fire-Extinguishing Equipment",
    "level": 4
  },
  {
    "code": "21 23 00",
    "label": "Wet-Chemical Fire-Extinguishing Systems",
    "level": 3
  },
  {
    "code": "21 23 13",
    "label": "Wet-Chemical Fire-Extinguishing Piping",
    "level": 4
  },
  {
    "code": "21 23 16",
    "label": "Wet-Chemical Fire-Extinguishing Equipment",
    "level": 4
  },
  {
    "code": "21 24 00",
    "label": "Dry-Chemical Fire-Extinguishing Systems",
    "level": 3
  },
  {
    "code": "21 24 13",
    "label": "Dry-Chemical Fire-Extinguishing Piping",
    "level": 4
  },
  {
    "code": "21 24 16",
    "label": "Dry-Chemical Fire-Extinguishing Equipment",
    "level": 4
  },
  {
    "code": "21 30 00",
    "label": "Fire Pumps",
    "level": 2
  },
  {
    "code": "21 31 00",
    "label": "Centrifugal Fire Pumps",
    "level": 3
  },
  {
    "code": "21 31 13",
    "label": "Electric-Drive, Centrifugal Fire Pumps",
    "level": 4
  },
  {
    "code": "21 31 16",
    "label": "Diesel-Drive, Centrifugal Fire Pumps",
    "level": 4
  },
  {
    "code": "21 32 00",
    "label": "Vertical-Turbine Fire Pumps",
    "level": 3
  },
  {
    "code": "21 32 13",
    "label": "Electric-Drive, Vertical-Turbine Fire Pumps",
    "level": 4
  },
  {
    "code": "21 32 16",
    "label": "Diesel-Drive, Vertical-Turbine Fire Pumps",
    "level": 4
  },
  {
    "code": "21 33 00",
    "label": "Positive-Displacement Fire Pumps",
    "level": 3
  },
  {
    "code": "21 33 13",
    "label": "Electric-Drive, Positive-Displacement Fire Pumps",
    "level": 4
  },
  {
    "code": "21 33 16",
    "label": "Diesel-Drive, Positive-Displacement Fire Pumps",
    "level": 4
  },
  {
    "code": "21 34 00",
    "label": "Fire Pump Accessories",
    "level": 3
  },
  {
    "code": "21 34 13",
    "label": "Pressure Maintenance Pumps",
    "level": 4
  },
  {
    "code": "21 40 00",
    "label": "Fire-Suppression Water Storage",
    "level": 2
  },
  {
    "code": "21 41 00",
    "label": "Storage Tanks for Fire-Suppression Water",
    "level": 3
  },
  {
    "code": "21 41 13",
    "label": "Pressurized Storage Tanks for Fire-Suppression Water",
    "level": 4
  },
  {
    "code": "21 41 16",
    "label": "Elevated Storage Tanks for Fire-Suppression Water",
    "level": 4
  },
  {
    "code": "21 41 19",
    "label": "Roof-Mounted Storage Tanks for Fire-Suppression Water",
    "level": 4
  },
  {
    "code": "21 41 23",
    "label": "Ground Suction Storage Tanks for Fire-Suppression Water",
    "level": 4
  },
  {
    "code": "21 41 26",
    "label": "Underground Storage Tanks for Fire-Suppression Water",
    "level": 4
  },
  {
    "code": "21 41 29",
    "label": "Storage Tanks for Fire-Suppression Water Additives",
    "level": 4
  },
  {
    "code": "22 00 00",
    "label": "Plumbing",
    "level": 1
  },
  {
    "code": "22 01 00",
    "label": "Operation and Maintenance of Plumbing",
    "level": 3
  },
  {
    "code": "22 01 10",
    "label": "Operation and Maintenance of Plumbing Piping and Pumps",
    "level": 4
  },
  {
    "code": "22 01 10.16",
    "label": "Video Piping Inspections",
    "level": 5
  },
  {
    "code": "22 01 10.51",
    "label": "Plumbing Piping Cleaning",
    "level": 5
  },
  {
    "code": "22 01 10.61",
    "label": "Plumbing Piping Repairs",
    "level": 5
  },
  {
    "code": "22 01 10.62",
    "label": "Plumbing Piping Relining",
    "level": 5
  },
  {
    "code": "22 01 30",
    "label": "Operation and Maintenance of Plumbing Equipment",
    "level": 4
  },
  {
    "code": "22 01 40",
    "label": "Operation and Maintenance of Plumbing Fixtures",
    "level": 4
  },
  {
    "code": "22 01 50",
    "label": "Operation and Maintenance of Pool and Fountain Plumbing Systems",
    "level": 4
  },
  {
    "code": "22 01 60",
    "label": "Operation and Maintenance of Laboratory and Healthcare Systems",
    "level": 4
  },
  {
    "code": "22 05 00",
    "label": "Common Work Results for Plumbing",
    "level": 3
  },
  {
    "code": "22 05 05",
    "label": "Selective Demolition for Plumbing",
    "level": 4
  },
  {
    "code": "22 05 13",
    "label": "Common Motor Requirements for Plumbing Equipment",
    "level": 4
  },
  {
    "code": "22 05 16",
    "label": "Expansion Fittings and Loops for Plumbing Piping",
    "level": 4
  },
  {
    "code": "22 05 17",
    "label": "Sleeves and Sleeve Seals for Plumbing Piping",
    "level": 4
  },
  {
    "code": "22 05 19",
    "label": "Meters and Gages for Plumbing Piping",
    "level": 4
  },
  {
    "code": "22 05 23",
    "label": "General-Duty Valves for Plumbing Piping",
    "level": 4
  },
  {
    "code": "22 05 29",
    "label": "Hangers and Supports for Plumbing Piping and Equipment",
    "level": 4
  },
  {
    "code": "22 05 33",
    "label": "Heat Tracing for Plumbing Piping",
    "level": 4
  },
  {
    "code": "22 05 48",
    "label": "Vibration and Seismic Controls for Plumbing Piping and Equipment",
    "level": 4
  },
  {
    "code": "22 05 48.13",
    "label": "Vibration Controls for Plumbing Piping and Equipment",
    "level": 5
  },
  {
    "code": "22 05 53",
    "label": "Identification for Plumbing Piping and Equipment",
    "level": 4
  },
  {
    "code": "22 05 73",
    "label": "Facility Drainage Manholes",
    "level": 4
  },
  {
    "code": "22 05 76",
    "label": "Facility Drainage Piping Cleanouts",
    "level": 4
  },
  {
    "code": "22 06 00",
    "label": "Schedules for Plumbing",
    "level": 3
  },
  {
    "code": "22 06 10",
    "label": "Schedules for Plumbing Piping and Pumps",
    "level": 4
  },
  {
    "code": "22 06 10.13",
    "label": "Plumbing Pump Schedule",
    "level": 5
  },
  {
    "code": "22 06 12",
    "label": "Schedules for Facility Potable Water Storage",
    "level": 4
  },
  {
    "code": "22 06 15",
    "label": "Schedules for General Service Compressed-Air Equipment",
    "level": 4
  },
  {
    "code": "22 06 30",
    "label": "Schedules for Plumbing Equipment",
    "level": 4
  },
  {
    "code": "22 06 30.13",
    "label": "Domestic Water Heater Schedule",
    "level": 5
  },
  {
    "code": "22 06 40",
    "label": "Schedules for Plumbing Fixtures",
    "level": 4
  },
  {
    "code": "22 06 40.13",
    "label": "Plumbing Fixture Schedule",
    "level": 5
  },
  {
    "code": "22 06 50",
    "label": "Schedules for Pool and Fountain Plumbing Systems",
    "level": 4
  },
  {
    "code": "22 06 60",
    "label": "Schedules for Laboratory and Healthcare Systems",
    "level": 4
  },
  {
    "code": "22 07 00",
    "label": "Plumbing Insulation",
    "level": 3
  },
  {
    "code": "22 07 16",
    "label": "Plumbing Equipment Insulation",
    "level": 4
  },
  {
    "code": "22 07 19",
    "label": "Plumbing Piping Insulation",
    "level": 4
  },
  {
    "code": "22 08 00",
    "label": "Commissioning of Plumbing",
    "level": 3
  },
  {
    "code": "22 09 00",
    "label": "Instrumentation and Control for Plumbing",
    "level": 3
  },
  {
    "code": "22 09 63",
    "label": "Medical Gas Alarms",
    "level": 4
  },
  {
    "code": "22 10 00",
    "label": "Plumbing Piping",
    "level": 2
  },
  {
    "code": "22 11 00",
    "label": "Facility Water Distribution",
    "level": 3
  },
  {
    "code": "22 11 13",
    "label": "Facility Water Distribution Piping",
    "level": 4
  },
  {
    "code": "22 11 16",
    "label": "Domestic Water Piping",
    "level": 4
  },
  {
    "code": "22 11 17",
    "label": "Gray-Water Piping",
    "level": 4
  },
  {
    "code": "22 11 19",
    "label": "Domestic Water Piping Specialties",
    "level": 4
  },
  {
    "code": "22 11 23",
    "label": "Domestic Water Pumps",
    "level": 4
  },
  {
    "code": "22 11 23.13",
    "label": "Domestic-Water Packaged Booster Pumps",
    "level": 5
  },
  {
    "code": "22 11 23.23",
    "label": "Domestic-Water In-Line Pumps",
    "level": 5
  },
  {
    "code": "22 11 23.26",
    "label": "Close-Coupled, Horizontally Mounted, In-Line Centrifugal Domestic-Water Pumps",
    "level": 5
  },
  {
    "code": "22 11 23.29",
    "label": "Close-Coupled, Vertically Mounted, In-Line Centrifugal Domestic-Water Pumps",
    "level": 5
  },
  {
    "code": "22 11 23.33",
    "label": "Separately Coupled, In-Line Centrifugal Domestic-Water Pumps",
    "level": 5
  },
  {
    "code": "22 11 23.36",
    "label": "Separately Coupled, Horizontally Mounted, In-Line Centrifugal Domestic-Water Pumps",
    "level": 5
  },
  {
    "code": "22 11 23.43",
    "label": "Domestic-Water, Base-Mounted Pumps",
    "level": 5
  },
  {
    "code": "22 11 63",
    "label": "Gray-Water Pumps",
    "level": 4
  },
  {
    "code": "22 12 00",
    "label": "Facility Potable-Water Storage Tanks",
    "level": 3
  },
  {
    "code": "22 12 13",
    "label": "Facility Roof-Mounted, Potable-Water Storage Tanks",
    "level": 4
  },
  {
    "code": "22 12 16",
    "label": "Facility Elevated, Potable-Water Storage Tanks",
    "level": 4
  },
  {
    "code": "22 12 19",
    "label": "Facility Ground-Mounted, Potable-Water Storage Tanks",
    "level": 4
  },
  {
    "code": "22 12 21",
    "label": "Facility Underground Potable-Water Storage Tanks",
    "level": 4
  },
  {
    "code": "22 12 23",
    "label": "Facility Indoor Potable-Water Storage Tanks",
    "level": 4
  },
  {
    "code": "22 12 23.13",
    "label": "Facility Steel, Indoor Potable-Water Storage Pressure Tanks",
    "level": 5
  },
  {
    "code": "22 12 23.16",
    "label": "Facility Steel, Indoor Potable-Water Storage Non-Pressure Tanks",
    "level": 5
  },
  {
    "code": "22 12 23.23",
    "label": "Facility Plastic, Indoor Potable-Water Storage Pressure Tanks",
    "level": 5
  },
  {
    "code": "22 12 23.26",
    "label": "Facility Plastic, Indoor Potable-Water Storage Non-Pressure Tanks",
    "level": 5
  },
  {
    "code": "22 13 00",
    "label": "Facility Sanitary Sewerage",
    "level": 3
  },
  {
    "code": "22 13 13",
    "label": "Facility Sanitary Sewers",
    "level": 4
  },
  {
    "code": "22 13 16",
    "label": "Sanitary Waste and Vent Piping",
    "level": 4
  },
  {
    "code": "22 13 19",
    "label": "Sanitary Waste Piping Specialties",
    "level": 4
  },
  {
    "code": "22 13 19.13",
    "label": "Sanitary Drains",
    "level": 5
  },
  {
    "code": "22 13 19.23",
    "label": "Fats, Oils, and Grease Disposal Systems",
    "level": 5
  },
  {
    "code": "22 13 19.26",
    "label": "Grease Removal Devices",
    "level": 5
  },
  {
    "code": "22 13 19.33",
    "label": "Backwater Valves",
    "level": 5
  },
  {
    "code": "22 13 19.36",
    "label": "Air-Admittance Valves",
    "level": 5
  },
  {
    "code": "22 13 23",
    "label": "Sanitary Waste Interceptors",
    "level": 4
  },
  {
    "code": "22 13 26",
    "label": "Sanitary Waste Separators",
    "level": 4
  },
  {
    "code": "22 13 29",
    "label": "Sanitary Sewerage Pumps",
    "level": 4
  },
  {
    "code": "22 13 29.13",
    "label": "Wet-Pit-Mounted, Vertical Sewerage Pumps",
    "level": 5
  },
  {
    "code": "22 13 29.16",
    "label": "Submersible Sewerage Pumps",
    "level": 5
  },
  {
    "code": "22 13 29.23",
    "label": "Sewerage Pump Reverse-Flow Assemblies",
    "level": 5
  },
  {
    "code": "22 13 29.33",
    "label": "Sewerage Pump Basins and Pits",
    "level": 5
  },
  {
    "code": "22 13 33",
    "label": "Packaged, Submersible Sewerage Pump Units",
    "level": 4
  },
  {
    "code": "22 13 36",
    "label": "Packaged, Wastewater Pump Units",
    "level": 4
  },
  {
    "code": "22 13 43",
    "label": "Facility Packaged Sewage Pumping Stations",
    "level": 4
  },
  {
    "code": "22 13 43.13",
    "label": "Facility Dry-Well Packaged Sewage Pumping Stations",
    "level": 5
  },
  {
    "code": "22 13 43.16",
    "label": "Facility Wet-Well Packaged Sewage Pumping Stations",
    "level": 5
  },
  {
    "code": "22 13 63",
    "label": "Facility Gray Water Tanks",
    "level": 4
  },
  {
    "code": "22 14 00",
    "label": "Facility Storm Drainage",
    "level": 3
  },
  {
    "code": "22 14 13",
    "label": "Facility Storm Drainage Piping",
    "level": 4
  },
  {
    "code": "22 14 16",
    "label": "Rainwater Leaders",
    "level": 4
  },
  {
    "code": "22 14 19",
    "label": "Sump Pump Discharge Piping",
    "level": 4
  },
  {
    "code": "22 14 23",
    "label": "Storm Drainage Piping Specialties",
    "level": 4
  },
  {
    "code": "22 14 26",
    "label": "Facility Storm Drains",
    "level": 4
  },
  {
    "code": "22 14 26.13",
    "label": "Roof Drains",
    "level": 5
  },
  {
    "code": "22 14 26.16",
    "label": "Facility Area Drains",
    "level": 5
  },
  {
    "code": "22 14 26.19",
    "label": "Facility Trench Drains",
    "level": 5
  },
  {
    "code": "22 14 29",
    "label": "Sump Pumps",
    "level": 4
  },
  {
    "code": "22 14 29.13",
    "label": "Wet-Pit-Mounted, Vertical Sump Pumps",
    "level": 5
  },
  {
    "code": "22 14 29.16",
    "label": "Submersible Sump Pumps",
    "level": 5
  },
  {
    "code": "22 14 29.19",
    "label": "Sump-Pump Basins and Pits",
    "level": 5
  },
  {
    "code": "22 14 33",
    "label": "Packaged, Pedestal Drainage Pump Units",
    "level": 4
  },
  {
    "code": "22 14 36",
    "label": "Packaged, Submersible, Drainage Pump Units",
    "level": 4
  },
  {
    "code": "22 14 53",
    "label": "Rainwater Storage Tanks",
    "level": 4
  },
  {
    "code": "22 14 63",
    "label": "Facility Storm-Water Retention Tanks",
    "level": 4
  },
  {
    "code": "22 15 00",
    "label": "General Service Compressed-Air Systems",
    "level": 3
  },
  {
    "code": "22 15 13",
    "label": "General Service Compressed-Air Piping",
    "level": 4
  },
  {
    "code": "22 15 16",
    "label": "General Service Compressed-Air Valves",
    "level": 4
  },
  {
    "code": "22 15 19",
    "label": "General Service Packaged Air Compressors and Receivers",
    "level": 4
  },
  {
    "code": "22 15 19.13",
    "label": "General Service Packaged Reciprocating Air Compressors",
    "level": 5
  },
  {
    "code": "22 15 19.16",
    "label": "General Service Packaged Liquid-Ring Air Compressors",
    "level": 5
  },
  {
    "code": "22 15 19.19",
    "label": "General Service Packaged Rotary-Screw Air Compressors",
    "level": 5
  },
  {
    "code": "22 15 19.23",
    "label": "General Service Packaged Sliding-Vane Air Compressors",
    "level": 5
  },
  {
    "code": "22 30 00",
    "label": "Plumbing Equipment",
    "level": 2
  },
  {
    "code": "22 31 00",
    "label": "Domestic Water Softeners",
    "level": 3
  },
  {
    "code": "22 31 13",
    "label": "Residential Domestic Water Softeners",
    "level": 4
  },
  {
    "code": "22 31 16",
    "label": "Commercial Domestic Water Softeners",
    "level": 4
  },
  {
    "code": "22 32 00",
    "label": "Domestic Water Filtration Equipment",
    "level": 3
  },
  {
    "code": "22 32 13",
    "label": "Domestic-Water Bag-Type Filters",
    "level": 4
  },
  {
    "code": "22 32 16",
    "label": "Domestic-Water Freestanding Cartridge Filters",
    "level": 4
  },
  {
    "code": "22 32 19",
    "label": "Domestic-Water Off-Floor Cartridge Filters",
    "level": 4
  },
  {
    "code": "22 32 23",
    "label": "Domestic-Water Carbon Filters",
    "level": 4
  },
  {
    "code": "22 32 26",
    "label": "Domestic-Water Sand Filters",
    "level": 4
  },
  {
    "code": "22 32 26.13",
    "label": "Domestic-Water Circulating Sand Filters",
    "level": 5
  },
  {
    "code": "22 32 26.16",
    "label": "Domestic-Water Multimedia Sand Filters",
    "level": 5
  },
  {
    "code": "22 32 26.19",
    "label": "Domestic-Water Greensand Filters",
    "level": 5
  },
  {
    "code": "22 33 00",
    "label": "Electric Domestic Water Heaters",
    "level": 3
  },
  {
    "code": "22 33 13",
    "label": "Instantaneous Electric Domestic Water Heaters",
    "level": 4
  },
  {
    "code": "22 33 13.13",
    "label": "Flow-Control, Instantaneous Electric Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 33 13.16",
    "label": "Thermostat-Control, Instantaneous Electric Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 33 30",
    "label": "Residential, Electric Domestic Water Heaters",
    "level": 4
  },
  {
    "code": "22 33 30.13",
    "label": "Residential, Small-Capacity Electric Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 33 30.16",
    "label": "Residential, Storage Electric Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 33 30.23",
    "label": "Residential, Collector-to-Tank, Solar-Electric Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 33 30.26",
    "label": "Residential, Collector-to-Tank, Heat-Exchanger-Coil, Solar-Electric Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 33 33",
    "label": "Light-Commercial Electric Domestic Water Heaters",
    "level": 4
  },
  {
    "code": "22 33 36",
    "label": "Commercial Domestic Water Electric Booster Heaters",
    "level": 4
  },
  {
    "code": "22 33 36.13",
    "label": "Commercial Domestic Water Electric Booster Heaters",
    "level": 5
  },
  {
    "code": "22 33 36.16",
    "label": "Commercial Storage Electric Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 34 00",
    "label": "Fuel-Fired Domestic Water Heaters",
    "level": 3
  },
  {
    "code": "22 34 13",
    "label": "Instantaneous, Tankless, Gas Domestic Water Heaters",
    "level": 4
  },
  {
    "code": "22 34 30",
    "label": "Residential Gas Domestic Water Heaters",
    "level": 4
  },
  {
    "code": "22 34 30.13",
    "label": "Residential, Atmospheric, Gas Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 34 30.16",
    "label": "Residential, Direct-Vent, Gas Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 34 30.19",
    "label": "Residential, Power-Vent, Gas Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 34 36",
    "label": "Commercial Gas Domestic Water Heaters",
    "level": 4
  },
  {
    "code": "22 34 36.13",
    "label": "Commercial, Atmospheric, Gas Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 34 36.16",
    "label": "Commercial, Power-Burner, Gas Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 34 36.19",
    "label": "Commercial, Power-Vent, Gas Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 34 36.23",
    "label": "Commercial, High-Efficiency, Gas Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 34 36.26",
    "label": "Commercial, Coil-Type, Finned-Tube, Gas Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 34 36.29",
    "label": "Commercial, Grid-Type, Finned-Tube, Gas Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 34 46",
    "label": "Oil-Fired Domestic Water Heaters",
    "level": 4
  },
  {
    "code": "22 34 46.13",
    "label": "Large-Capacity, Oil-Fired Domestic Water Heaters",
    "level": 5
  },
  {
    "code": "22 34 56",
    "label": "Dual-Fuel-Fired Domestic Water Heaters",
    "level": 4
  },
  {
    "code": "22 35 00",
    "label": "Domestic Water Heat Exchangers",
    "level": 3
  },
  {
    "code": "22 35 13",
    "label": "Instantaneous Domestic Water Heat Exchangers",
    "level": 4
  },
  {
    "code": "22 35 13.13",
    "label": "Heating-Fluid-in-Coil, Instantaneous Domestic Water Heat Exchangers",
    "level": 5
  },
  {
    "code": "22 35 13.16",
    "label": "Domestic-Water-in-Coil, Instantaneous Domestic Water Heat Exchangers",
    "level": 5
  },
  {
    "code": "22 35 13.19",
    "label": "Heating-Fluid-in-U-Tube-Coil, Instantaneous Domestic Water Heat Exchangers",
    "level": 5
  },
  {
    "code": "22 35 23",
    "label": "Circulating, Domestic Water Heat Exchangers",
    "level": 4
  },
  {
    "code": "22 35 23.13",
    "label": "Circulating, Compact Domestic Water Heat Exchangers",
    "level": 5
  },
  {
    "code": "22 35 23.16",
    "label": "Circulating, Storage Domestic Water Heat Exchangers",
    "level": 5
  },
  {
    "code": "22 35 29",
    "label": "Noncirculating, Domestic Water Heat Exchangers",
    "level": 4
  },
  {
    "code": "22 35 29.13",
    "label": "Noncirculating, Compact Domestic Water Heat Exchangers",
    "level": 5
  },
  {
    "code": "22 35 29.16",
    "label": "Noncirculating, Storage Domestic Water Heat Exchangers",
    "level": 5
  },
  {
    "code": "22 35 36",
    "label": "Domestic Water Brazed-Plate Heat Exchangers",
    "level": 4
  },
  {
    "code": "22 35 39",
    "label": "Domestic Water Frame-and-Plate Heat Exchangers",
    "level": 4
  },
  {
    "code": "22 35 43",
    "label": "Domestic Water Heat Reclaimers",
    "level": 4
  },
  {
    "code": "22 36 00",
    "label": "Domestic Water Preheaters",
    "level": 3
  },
  {
    "code": "22 36 13",
    "label": "Solar Domestic Water Preheaters",
    "level": 4
  },
  {
    "code": "22 36 23",
    "label": "Geothermal Domestic Water Preheaters",
    "level": 4
  },
  {
    "code": "22 40 00",
    "label": "Plumbing Fixtures",
    "level": 2
  },
  {
    "code": "22 41 00",
    "label": "Residential Plumbing Fixtures",
    "level": 3
  },
  {
    "code": "22 41 13",
    "label": "Residential Water Closets, Urinals, and Bidets",
    "level": 4
  },
  {
    "code": "22 41 13.13",
    "label": "Residential Water Closets",
    "level": 5
  },
  {
    "code": "22 41 13.16",
    "label": "Residential Urinals",
    "level": 5
  },
  {
    "code": "22 41 13.19",
    "label": "Residential Bidets",
    "level": 5
  },
  {
    "code": "22 41 16",
    "label": "Residential Lavatories and Sinks",
    "level": 4
  },
  {
    "code": "22 41 16.13",
    "label": "Residential Lavatories",
    "level": 5
  },
  {
    "code": "22 41 16.16",
    "label": "Residential Sinks",
    "level": 5
  },
  {
    "code": "22 41 19",
    "label": "Residential Bathtubs",
    "level": 4
  },
  {
    "code": "22 41 23",
    "label": "Residential Showers",
    "level": 4
  },
  {
    "code": "22 41 26",
    "label": "Residential Disposers",
    "level": 4
  },
  {
    "code": "22 41 36",
    "label": "Residential Laundry Trays",
    "level": 4
  },
  {
    "code": "22 41 39",
    "label": "Residential Faucets, Supplies, and Trim",
    "level": 4
  },
  {
    "code": "22 42 00",
    "label": "Commercial Plumbing Fixtures",
    "level": 3
  },
  {
    "code": "22 42 13",
    "label": "Commercial Water Closets, Urinals, and Bidets",
    "level": 4
  },
  {
    "code": "22 42 13.13",
    "label": "Commercial Water Closets",
    "level": 5
  },
  {
    "code": "22 42 13.16",
    "label": "Commercial Urinals",
    "level": 5
  },
  {
    "code": "22 42 16",
    "label": "Commercial Lavatories and Sinks",
    "level": 4
  },
  {
    "code": "22 42 16.13",
    "label": "Commercial Lavatories",
    "level": 5
  },
  {
    "code": "22 42 16.16",
    "label": "Commercial Sinks",
    "level": 5
  },
  {
    "code": "22 42 19",
    "label": "Commercial Bathtubs",
    "level": 4
  },
  {
    "code": "22 42 23",
    "label": "Commercial Showers",
    "level": 4
  },
  {
    "code": "22 42 26",
    "label": "Commercial Disposers",
    "level": 4
  },
  {
    "code": "22 42 29",
    "label": "Shampoo Bowls",
    "level": 4
  },
  {
    "code": "22 42 33",
    "label": "Wash Fountains",
    "level": 4
  },
  {
    "code": "22 42 36",
    "label": "Commercial Laundry Trays",
    "level": 4
  },
  {
    "code": "22 42 39",
    "label": "Commercial Faucets, Supplies, and Trim",
    "level": 4
  },
  {
    "code": "22 42 43",
    "label": "Flushometers",
    "level": 4
  },
  {
    "code": "22 43 00",
    "label": "Healthcare Plumbing Fixtures",
    "level": 3
  },
  {
    "code": "22 43 13",
    "label": "Healthcare Water Closets",
    "level": 4
  },
  {
    "code": "22 43 16",
    "label": "Healthcare Sinks",
    "level": 4
  },
  {
    "code": "22 43 19",
    "label": "Healthcare Bathtubs",
    "level": 4
  },
  {
    "code": "22 43 23",
    "label": "Healthcare Showers",
    "level": 4
  },
  {
    "code": "22 43 39",
    "label": "Healthcare Faucets",
    "level": 4
  },
  {
    "code": "22 43 43",
    "label": "Healthcare Plumbing Fixture Flushometers",
    "level": 4
  },
  {
    "code": "22 45 00",
    "label": "Emergency Plumbing Fixtures",
    "level": 3
  },
  {
    "code": "22 45 13",
    "label": "Emergency Showers",
    "level": 4
  },
  {
    "code": "22 45 16",
    "label": "Eyewash Equipment",
    "level": 4
  },
  {
    "code": "22 45 19",
    "label": "Self-Contained Eyewash Equipment",
    "level": 4
  },
  {
    "code": "22 45 23",
    "label": "Personal Eyewash Equipment",
    "level": 4
  },
  {
    "code": "22 45 26",
    "label": "Eye/Face Wash Equipment",
    "level": 4
  },
  {
    "code": "22 45 29",
    "label": "Hand-Held Emergency Drench Hoses",
    "level": 4
  },
  {
    "code": "22 45 33",
    "label": "Combination Emergency Fixture Units",
    "level": 4
  },
  {
    "code": "22 45 36",
    "label": "Emergency Fixture Water-Tempering Equipment",
    "level": 4
  },
  {
    "code": "22 46 00",
    "label": "Security Plumbing Fixtures",
    "level": 3
  },
  {
    "code": "22 46 13",
    "label": "Security Water Closets and Urinals",
    "level": 4
  },
  {
    "code": "22 46 13.13",
    "label": "Security Water Closets",
    "level": 5
  },
  {
    "code": "22 46 13.16",
    "label": "Security Urinals",
    "level": 5
  },
  {
    "code": "22 46 16",
    "label": "Security Lavatories and Sinks",
    "level": 4
  },
  {
    "code": "22 46 16.13",
    "label": "Security Lavatories",
    "level": 5
  },
  {
    "code": "22 46 16.16",
    "label": "Security Sinks",
    "level": 5
  },
  {
    "code": "22 46 19",
    "label": "Security Showers",
    "level": 4
  },
  {
    "code": "22 46 39",
    "label": "Security Faucets, Supplies, and Trim",
    "level": 4
  },
  {
    "code": "22 46 43",
    "label": "Security Plumbing Fixture Flushometers",
    "level": 4
  },
  {
    "code": "22 46 53",
    "label": "Security Plumbing Fixture Supports",
    "level": 4
  },
  {
    "code": "22 47 00",
    "label": "Drinking Fountains and Water Coolers",
    "level": 3
  },
  {
    "code": "22 47 13",
    "label": "Drinking Fountains",
    "level": 4
  },
  {
    "code": "22 47 16",
    "label": "Pressure Water Coolers",
    "level": 4
  },
  {
    "code": "22 47 19",
    "label": "Water-Station Water Coolers",
    "level": 4
  },
  {
    "code": "22 47 23",
    "label": "Remote Water Coolers",
    "level": 4
  },
  {
    "code": "22 50 00",
    "label": "Pool and Fountain Plumbing Systems",
    "level": 2
  },
  {
    "code": "22 51 00",
    "label": "Swimming Pool Plumbing Systems",
    "level": 3
  },
  {
    "code": "22 51 13",
    "label": "Swimming Pool Piping",
    "level": 4
  },
  {
    "code": "22 51 16",
    "label": "Swimming Pool Pumps",
    "level": 4
  },
  {
    "code": "22 51 19",
    "label": "Swimming Pool Water Treatment Equipment",
    "level": 4
  },
  {
    "code": "22 51 23",
    "label": "Swimming Pool Equipment Controls",
    "level": 4
  },
  {
    "code": "22 52 00",
    "label": "Fountain Plumbing Systems",
    "level": 3
  },
  {
    "code": "22 52 13",
    "label": "Fountain Piping",
    "level": 4
  },
  {
    "code": "22 52 16",
    "label": "Fountain Pumps",
    "level": 4
  },
  {
    "code": "22 52 19",
    "label": "Fountain Water Treatment Equipment",
    "level": 4
  },
  {
    "code": "22 52 23",
    "label": "Fountain Equipment Controls",
    "level": 4
  },
  {
    "code": "22 60 00",
    "label": "Gas and Vacuum Systems for Laboratory and Healthcare Facilities",
    "level": 2
  },
  {
    "code": "22 61 00",
    "label": "Compressed-Air Systems for Laboratory and Healthcare Facilities",
    "level": 3
  },
  {
    "code": "22 61 13",
    "label": "Compressed-Air Piping for Laboratory and Healthcare Facilities",
    "level": 4
  },
  {
    "code": "22 61 13.53",
    "label": "Laboratory Compressed-Air Piping",
    "level": 5
  },
  {
    "code": "22 61 13.70",
    "label": "Healthcare Compressed-Air Piping",
    "level": 5
  },
  {
    "code": "22 61 13.74",
    "label": "Dental Compressed-Air Piping",
    "level": 5
  },
  {
    "code": "22 61 19",
    "label": "Compressed-Air Equipment for Laboratory and Healthcare Facilities",
    "level": 4
  },
  {
    "code": "22 61 19.53",
    "label": "Laboratory Compressed-Air Equipment",
    "level": 5
  },
  {
    "code": "22 61 19.70",
    "label": "Healthcare Compressed-Air Equipment",
    "level": 5
  },
  {
    "code": "22 61 19.74",
    "label": "Dental Compressed-Air Equipment",
    "level": 5
  },
  {
    "code": "22 62 00",
    "label": "Vacuum Systems for Laboratory and Healthcare Facilities",
    "level": 3
  },
  {
    "code": "22 62 13",
    "label": "Vacuum Piping for Laboratory and Healthcare Facilities",
    "level": 4
  },
  {
    "code": "22 62 13.53",
    "label": "Laboratory Vacuum Piping",
    "level": 5
  },
  {
    "code": "22 62 13.70",
    "label": "Healthcare, Surgical Vacuum Piping",
    "level": 5
  },
  {
    "code": "22 62 13.74",
    "label": "Dental Vacuum Piping",
    "level": 5
  },
  {
    "code": "22 62 19",
    "label": "Vacuum Equipment for Laboratory and Healthcare Facilities",
    "level": 4
  },
  {
    "code": "22 62 19.53",
    "label": "Laboratory Vacuum Equipment",
    "level": 5
  },
  {
    "code": "22 62 19.70",
    "label": "Healthcare Vacuum Equipment",
    "level": 5
  },
  {
    "code": "22 62 19.74",
    "label": "Dental Vacuum and Evacuation Equipment",
    "level": 5
  },
  {
    "code": "22 62 23",
    "label": "Waste Anesthesia-Gas Piping",
    "level": 4
  },
  {
    "code": "22 63 00",
    "label": "Gas Systems for Laboratory and Healthcare Facilities",
    "level": 3
  },
  {
    "code": "22 63 13",
    "label": "Gas Piping for Laboratory and Healthcare Facilities",
    "level": 4
  },
  {
    "code": "22 63 13.53",
    "label": "Laboratory Gas Piping",
    "level": 5
  },
  {
    "code": "22 63 13.70",
    "label": "Healthcare Gas Piping",
    "level": 5
  },
  {
    "code": "22 63 19",
    "label": "Gas Storage Tanks for Laboratory and Healthcare Facilities",
    "level": 4
  },
  {
    "code": "22 63 19.53",
    "label": "Laboratory Gas Storage Tanks",
    "level": 5
  },
  {
    "code": "22 63 19.70",
    "label": "Healthcare Gas Storage Tanks",
    "level": 5
  },
  {
    "code": "22 66 00",
    "label": "Chemical-Waste Systems for Laboratory and Healthcare Facilities",
    "level": 3
  },
  {
    "code": "22 66 53",
    "label": "Laboratory Chemical-Waste and Vent Piping",
    "level": 4
  },
  {
    "code": "22 66 70",
    "label": "Healthcare Chemical-Waste and Vent Piping",
    "level": 4
  },
  {
    "code": "22 66 83",
    "label": "Chemical-Waste Tanks",
    "level": 4
  },
  {
    "code": "22 66 83.13",
    "label": "Chemical-Waste Dilution Tanks",
    "level": 5
  },
  {
    "code": "22 66 83.16",
    "label": "Chemical-Waste Neutralization Tanks",
    "level": 5
  },
  {
    "code": "22 67 00",
    "label": "Processed Water Systems for Laboratory and Healthcare Facilities",
    "level": 3
  },
  {
    "code": "22 67 13",
    "label": "Processed Water Piping for Laboratory and Healthcare Facilities",
    "level": 4
  },
  {
    "code": "22 67 13.13",
    "label": "Distilled-Water Piping",
    "level": 5
  },
  {
    "code": "22 67 13.16",
    "label": "Reverse-Osmosis Water Piping",
    "level": 5
  },
  {
    "code": "22 67 13.19",
    "label": "Deionized-Water Piping",
    "level": 5
  },
  {
    "code": "22 67 19",
    "label": "Processed Water Equipment for Laboratory and Healthcare Facilities",
    "level": 4
  },
  {
    "code": "22 67 19.13",
    "label": "Distilled-Water Equipment",
    "level": 5
  },
  {
    "code": "22 67 19.16",
    "label": "Reverse-Osmosis Water Equipment",
    "level": 5
  },
  {
    "code": "22 67 19.19",
    "label": "Deionized-Water Equipment",
    "level": 5
  },
  {
    "code": "23 00 00",
    "label": "Heating, Ventilating, and Air Conditioning (HVAC)",
    "level": 1
  },
  {
    "code": "23 01 00",
    "label": "Operation and Maintenance of HVAC Systems",
    "level": 3
  },
  {
    "code": "23 01 10",
    "label": "Operation and Maintenance of Facility Fuel Systems",
    "level": 4
  },
  {
    "code": "23 01 20",
    "label": "Operation and Maintenance of HVAC Piping and Pumps",
    "level": 4
  },
  {
    "code": "23 01 30",
    "label": "Operation and Maintenance of HVAC Air Distribution",
    "level": 4
  },
  {
    "code": "23 01 30.51",
    "label": "HVAC Air-Distribution System Cleaning",
    "level": 5
  },
  {
    "code": "23 01 50",
    "label": "Operation and Maintenance of Central Heating Equipment",
    "level": 4
  },
  {
    "code": "23 01 60",
    "label": "Operation and Maintenance of Central Cooling Equipment",
    "level": 4
  },
  {
    "code": "23 01 60.71",
    "label": "Refrigerant Recovery/Recycling",
    "level": 5
  },
  {
    "code": "23 01 70",
    "label": "Operation and Maintenance of Central HVAC Equipment",
    "level": 4
  },
  {
    "code": "23 01 80",
    "label": "Operation and Maintenance of Decentralized HVAC Equipment",
    "level": 4
  },
  {
    "code": "23 01 90",
    "label": "Diagnostic Systems for HVAC",
    "level": 4
  },
  {
    "code": "23 05 00",
    "label": "Common Work Results for HVAC",
    "level": 3
  },
  {
    "code": "23 05 05",
    "label": "Selective Demolition for Heating, Ventilating, and Air Conditioning (HVAC)",
    "level": 4
  },
  {
    "code": "23 05 13",
    "label": "Common Motor Requirements for HVAC Equipment",
    "level": 4
  },
  {
    "code": "23 05 16",
    "label": "Expansion Fittings and Loops for HVAC Piping",
    "level": 4
  },
  {
    "code": "23 05 17",
    "label": "Sleeves and Sleeve Seals for HVAC Piping",
    "level": 4
  },
  {
    "code": "23 05 19",
    "label": "Meters and Gages for HVAC Piping",
    "level": 4
  },
  {
    "code": "23 05 23",
    "label": "General-Duty Valves for HVAC Piping",
    "level": 4
  },
  {
    "code": "23 05 29",
    "label": "Hangers and Supports for HVAC Piping and Equipment",
    "level": 4
  },
  {
    "code": "23 05 33",
    "label": "Heat Tracing for HVAC Piping",
    "level": 4
  },
  {
    "code": "23 05 48",
    "label": "Vibration and Seismic Controls for HVAC",
    "level": 4
  },
  {
    "code": "23 05 48.13",
    "label": "Vibration Controls for HVAC",
    "level": 5
  },
  {
    "code": "23 05 53",
    "label": "Identification for HVAC Piping and Equipment",
    "level": 4
  },
  {
    "code": "23 05 63",
    "label": "Anti-Microbial Coatings for HVAC Ducts and Equipment",
    "level": 4
  },
  {
    "code": "23 05 66",
    "label": "Anti-Microbial Ultraviolet Emitters for HVAC Ducts and Equipment",
    "level": 4
  },
  {
    "code": "23 05 93",
    "label": "Testing, Adjusting, and Balancing for HVAC",
    "level": 4
  },
  {
    "code": "23 06 00",
    "label": "Schedules for HVAC",
    "level": 3
  },
  {
    "code": "23 06 10",
    "label": "Schedules for Facility Fuel Service Systems",
    "level": 4
  },
  {
    "code": "23 06 20",
    "label": "Schedules for HVAC Piping and Pumps",
    "level": 4
  },
  {
    "code": "23 06 20.13",
    "label": "Hydronic Pump Schedule",
    "level": 5
  },
  {
    "code": "23 06 30",
    "label": "Schedules for HVAC Air Distribution",
    "level": 4
  },
  {
    "code": "23 06 30.13",
    "label": "HVAC Fan Schedule",
    "level": 5
  },
  {
    "code": "23 06 30.16",
    "label": "Air Terminal Unit Schedule",
    "level": 5
  },
  {
    "code": "23 06 30.19",
    "label": "Air Outlet and Inlet Schedule",
    "level": 5
  },
  {
    "code": "23 06 30.23",
    "label": "HVAC Air Cleaning Device Schedule",
    "level": 5
  },
  {
    "code": "23 06 50",
    "label": "Schedules for Central Heating Equipment",
    "level": 4
  },
  {
    "code": "23 06 50.13",
    "label": "Heating Boiler Schedule",
    "level": 5
  },
  {
    "code": "23 06 60",
    "label": "Schedules for Central Cooling Equipment",
    "level": 4
  },
  {
    "code": "23 06 60.13",
    "label": "Refrigerant Condenser Schedule",
    "level": 5
  },
  {
    "code": "23 06 60.16",
    "label": "Packaged Water Chiller Schedule",
    "level": 5
  },
  {
    "code": "23 06 70",
    "label": "Schedules for Central HVAC Equipment",
    "level": 4
  },
  {
    "code": "23 06 70.13",
    "label": "Indoor, Central-Station Air-Handling Unit Schedule",
    "level": 5
  },
  {
    "code": "23 06 70.16",
    "label": "Packaged Outdoor HVAC Equipment Schedule",
    "level": 5
  },
  {
    "code": "23 06 80",
    "label": "Schedules for Decentralized HVAC Equipment",
    "level": 4
  },
  {
    "code": "23 06 80.13",
    "label": "Decentralized Unitary HVAC Equipment Schedule",
    "level": 5
  },
  {
    "code": "23 06 80.16",
    "label": "Convection Heating and Cooling Unit Schedule",
    "level": 5
  },
  {
    "code": "23 06 80.19",
    "label": "Radiant Heating Unit Schedule",
    "level": 5
  },
  {
    "code": "23 07 00",
    "label": "HVAC Insulation",
    "level": 3
  },
  {
    "code": "23 07 13",
    "label": "Duct Insulation",
    "level": 4
  },
  {
    "code": "23 07 16",
    "label": "HVAC Equipment Insulation",
    "level": 4
  },
  {
    "code": "23 07 19",
    "label": "HVAC Piping Insulation",
    "level": 4
  },
  {
    "code": "23 08 00",
    "label": "Commissioning of HVAC",
    "level": 3
  },
  {
    "code": "23 09 00",
    "label": "Instrumentation and Control for HVAC",
    "level": 3
  },
  {
    "code": "23 09 13",
    "label": "Instrumentation and Control Devices for HVAC",
    "level": 4
  },
  {
    "code": "23 09 13.13",
    "label": "Actuators and Operators",
    "level": 5
  },
  {
    "code": "23 09 13.23",
    "label": "Sensors and Transmitters",
    "level": 5
  },
  {
    "code": "23 09 13.33",
    "label": "Control Valves",
    "level": 5
  },
  {
    "code": "23 09 13.43",
    "label": "Control Dampers",
    "level": 5
  },
  {
    "code": "23 09 23",
    "label": "Direct-Digital Control System for HVAC",
    "level": 4
  },
  {
    "code": "23 09 23.11",
    "label": "Control Valves",
    "level": 5
  },
  {
    "code": "23 09 23.12",
    "label": "Control Dampers",
    "level": 5
  },
  {
    "code": "23 09 23.13",
    "label": "Energy Meters",
    "level": 5
  },
  {
    "code": "23 09 23.14",
    "label": "Flow Instruments",
    "level": 5
  },
  {
    "code": "23 09 23.16",
    "label": "Gas Instruments",
    "level": 5
  },
  {
    "code": "23 09 23.17",
    "label": "Level Instruments",
    "level": 5
  },
  {
    "code": "23 09 23.18",
    "label": "Leak Detection Instruments",
    "level": 5
  },
  {
    "code": "23 09 23.19",
    "label": "Moisture Instruments",
    "level": 5
  },
  {
    "code": "23 09 23.21",
    "label": "Motion Instruments",
    "level": 5
  },
  {
    "code": "23 09 23.22",
    "label": "Position Instruments",
    "level": 5
  },
  {
    "code": "23 09 23.23",
    "label": "Pressure Instruments",
    "level": 5
  },
  {
    "code": "23 09 23.24",
    "label": "Speed Instruments",
    "level": 5
  },
  {
    "code": "23 09 23.27",
    "label": "Temperature Instruments",
    "level": 5
  },
  {
    "code": "23 09 23.33",
    "label": "Vibration Instruments",
    "level": 5
  },
  {
    "code": "23 09 23.43",
    "label": "Weather Stations",
    "level": 5
  },
  {
    "code": "23 09 33",
    "label": "Electric and Electronic Control System for HVAC",
    "level": 4
  },
  {
    "code": "23 09 43",
    "label": "Pneumatic Control System for HVAC",
    "level": 4
  },
  {
    "code": "23 09 53",
    "label": "Pneumatic and Electric Control System for HVAC",
    "level": 4
  },
  {
    "code": "23 09 93",
    "label": "Sequence of Operations for HVAC Controls",
    "level": 4
  },
  {
    "code": "23 09 93.11",
    "label": "Sequence of Operation for HVAC DDC",
    "level": 5
  },
  {
    "code": "23 10 00",
    "label": "Facility Fuel Systems",
    "level": 2
  },
  {
    "code": "23 11 00",
    "label": "Facility Fuel Piping",
    "level": 3
  },
  {
    "code": "23 11 13",
    "label": "Facility Fuel-Oil Piping",
    "level": 4
  },
  {
    "code": "23 11 16",
    "label": "Facility Gasoline Piping",
    "level": 4
  },
  {
    "code": "23 11 23",
    "label": "Facility Natural-Gas Piping",
    "level": 4
  },
  {
    "code": "23 11 26",
    "label": "Facility Liquefied-Petroleum Gas Piping",
    "level": 4
  },
  {
    "code": "23 12 00",
    "label": "Facility Fuel Pumps",
    "level": 3
  },
  {
    "code": "23 12 13",
    "label": "Facility Fuel-Oil Pumps",
    "level": 4
  },
  {
    "code": "23 12 16",
    "label": "Facility Gasoline Dispensing Pumps",
    "level": 4
  },
  {
    "code": "23 12 26",
    "label": "Facility Liquefied-Petroleum Gas Pumps",
    "level": 4
  },
  {
    "code": "23 13 00",
    "label": "Facility Fuel-Storage Tanks",
    "level": 3
  },
  {
    "code": "23 13 13",
    "label": "Facility Underground Fuel-Oil, Storage Tanks",
    "level": 4
  },
  {
    "code": "23 13 13.13",
    "label": "Double-Wall Steel, Underground Fuel-Oil, Storage Tanks",
    "level": 5
  },
  {
    "code": "23 13 13.16",
    "label": "Composite, Steel, Underground Fuel-Oil, Storage Tanks",
    "level": 5
  },
  {
    "code": "23 13 13.19",
    "label": "Jacketed, Steel, Underground Fuel-Oil, Storage Tanks",
    "level": 5
  },
  {
    "code": "23 13 13.23",
    "label": "Glass-Fiber-Reinforced-Plastic, Underground Fuel-Oil, Storage Tanks",
    "level": 5
  },
  {
    "code": "23 13 13.33",
    "label": "Fuel-Oil Storage Tank Pumps",
    "level": 5
  },
  {
    "code": "23 13 23",
    "label": "Facility Aboveground Fuel-Oil, Storage Tanks",
    "level": 4
  },
  {
    "code": "23 13 23.13",
    "label": "Vertical, Steel, Aboveground Fuel-Oil, Storage Tanks",
    "level": 5
  },
  {
    "code": "23 13 23.16",
    "label": "Horizontal, Steel, Aboveground Fuel-Oil, Storage Tanks",
    "level": 5
  },
  {
    "code": "23 13 23.19",
    "label": "Containment-Dike, Steel, Aboveground Fuel-Oil, Storage Tanks",
    "level": 5
  },
  {
    "code": "23 13 23.23",
    "label": "Insulated, Steel, Aboveground Fuel-Oil, Storage Tanks",
    "level": 5
  },
  {
    "code": "23 13 23.26",
    "label": "Concrete-Vaulted, Steel, Aboveground Fuel-Oil, Storage Tanks",
    "level": 5
  },
  {
    "code": "23 13 26",
    "label": "Facility Aboveground Liquefied-Petroleum Gas Storage Tanks",
    "level": 4
  },
  {
    "code": "23 20 00",
    "label": "HVAC Piping and Pumps",
    "level": 2
  },
  {
    "code": "23 21 00",
    "label": "Hydronic Piping and Pumps",
    "level": 3
  },
  {
    "code": "23 21 13",
    "label": "Hydronic Piping",
    "level": 4
  },
  {
    "code": "23 21 13.13",
    "label": "Underground Hydronic Piping",
    "level": 5
  },
  {
    "code": "23 21 13.23",
    "label": "Aboveground Hydronic Piping",
    "level": 5
  },
  {
    "code": "23 21 13.33",
    "label": "Ground-Loop Heat-Pump Piping",
    "level": 5
  },
  {
    "code": "23 21 16",
    "label": "Hydronic Piping Specialties",
    "level": 4
  },
  {
    "code": "23 21 23",
    "label": "Hydronic Pumps",
    "level": 4
  },
  {
    "code": "23 21 23.13",
    "label": "In-Line Centrifugal Hydronic Pumps",
    "level": 5
  },
  {
    "code": "23 21 23.16",
    "label": "Base-Mounted, Centrifugal Hydronic Pumps",
    "level": 5
  },
  {
    "code": "23 21 23.19",
    "label": "Vertical-Mounted, Double-Suction Centrifugal Hydronic Pumps",
    "level": 5
  },
  {
    "code": "23 21 23.23",
    "label": "Vertical-Turbine Hydronic Pumps",
    "level": 5
  },
  {
    "code": "23 21 29",
    "label": "Automatic Condensate Pump Units",
    "level": 4
  },
  {
    "code": "23 22 00",
    "label": "Steam and Condensate Piping and Pumps",
    "level": 3
  },
  {
    "code": "23 22 13",
    "label": "Steam and Condensate Heating Piping",
    "level": 4
  },
  {
    "code": "23 22 13.13",
    "label": "Underground Steam and Condensate Heating Piping",
    "level": 5
  },
  {
    "code": "23 22 13.23",
    "label": "Aboveground Steam and Condensate Heating Piping",
    "level": 5
  },
  {
    "code": "23 22 16",
    "label": "Steam and Condensate Heating Piping Specialties",
    "level": 4
  },
  {
    "code": "23 22 23",
    "label": "Steam Condensate Pumps",
    "level": 4
  },
  {
    "code": "23 22 23.13",
    "label": "Electric-Driven Steam Condensate Pumps",
    "level": 5
  },
  {
    "code": "23 22 23.23",
    "label": "Pressure-Powered Steam Condensate Pumps",
    "level": 5
  },
  {
    "code": "23 23 00",
    "label": "Refrigerant Piping",
    "level": 3
  },
  {
    "code": "23 23 13",
    "label": "Refrigerant Piping Valves",
    "level": 4
  },
  {
    "code": "23 23 16",
    "label": "Refrigerant Piping Specialties",
    "level": 4
  },
  {
    "code": "23 23 19",
    "label": "Refrigerant Safety Relief Valve Discharge Piping",
    "level": 4
  },
  {
    "code": "23 23 23",
    "label": "Refrigerants",
    "level": 4
  },
  {
    "code": "23 24 00",
    "label": "Internal-Combustion Engine Piping",
    "level": 3
  },
  {
    "code": "23 24 13",
    "label": "Internal-Combustion Engine Remote-Radiator Coolant Piping",
    "level": 4
  },
  {
    "code": "23 24 16",
    "label": "Internal-Combustion Engine Exhaust Piping",
    "level": 4
  },
  {
    "code": "23 25 00",
    "label": "HVAC Water Treatment",
    "level": 3
  },
  {
    "code": "23 25 13",
    "label": "Water Treatment for Closed-Loop Hydronic Systems",
    "level": 4
  },
  {
    "code": "23 25 16",
    "label": "Water Treatment for Open Hydronic Systems",
    "level": 4
  },
  {
    "code": "23 25 19",
    "label": "Water Treatment for Steam System Feedwater",
    "level": 4
  },
  {
    "code": "23 25 23",
    "label": "Water Treatment for Humidification Steam System Feedwater",
    "level": 4
  },
  {
    "code": "23 25 33",
    "label": "HVAC Makeup-Water Filtration Equipment",
    "level": 4
  },
  {
    "code": "23 30 00",
    "label": "HVAC Air Distribution",
    "level": 2
  },
  {
    "code": "23 31 00",
    "label": "HVAC Ducts and Casings",
    "level": 3
  },
  {
    "code": "23 31 13",
    "label": "Metal Ducts",
    "level": 4
  },
  {
    "code": "23 31 13.13",
    "label": "Rectangular Metal Ducts",
    "level": 5
  },
  {
    "code": "23 31 13.16",
    "label": "Round and Flat-Oval Spiral Ducts",
    "level": 5
  },
  {
    "code": "23 31 13.19",
    "label": "Metal Duct Fittings",
    "level": 5
  },
  {
    "code": "23 31 16",
    "label": "Nonmetal Ducts",
    "level": 4
  },
  {
    "code": "23 31 16.13",
    "label": "Fibrous-Glass Ducts",
    "level": 5
  },
  {
    "code": "23 31 16.16",
    "label": "Thermoset Fiberglass-Reinforced Plastic Ducts",
    "level": 5
  },
  {
    "code": "23 31 16.19",
    "label": "PVC Ducts",
    "level": 5
  },
  {
    "code": "23 31 16.26",
    "label": "Concrete Ducts",
    "level": 5
  },
  {
    "code": "23 31 19",
    "label": "HVAC Casings",
    "level": 4
  },
  {
    "code": "23 32 00",
    "label": "Air Plenums and Chases",
    "level": 3
  },
  {
    "code": "23 32 13",
    "label": "Fabricated, Metal Air Plenums",
    "level": 4
  },
  {
    "code": "23 32 33",
    "label": "Air-Distribution Ceiling Plenums",
    "level": 4
  },
  {
    "code": "23 32 36",
    "label": "Air-Distribution Floor Plenums",
    "level": 4
  },
  {
    "code": "23 32 39",
    "label": "Air-Distribution Wall Plenums",
    "level": 4
  },
  {
    "code": "23 32 43",
    "label": "Air-Distribution Chases Formed by General Construction",
    "level": 4
  },
  {
    "code": "23 32 48",
    "label": "Acoustical Air Plenums",
    "level": 4
  },
  {
    "code": "23 33 00",
    "label": "Air Duct Accessories",
    "level": 3
  },
  {
    "code": "23 33 13",
    "label": "Dampers",
    "level": 4
  },
  {
    "code": "23 33 13.13",
    "label": "Volume-Control Dampers",
    "level": 5
  },
  {
    "code": "23 33 13.16",
    "label": "Fire Dampers",
    "level": 5
  },
  {
    "code": "23 33 13.19",
    "label": "Smoke-Control Dampers",
    "level": 5
  },
  {
    "code": "23 33 13.23",
    "label": "Backdraft Dampers",
    "level": 5
  },
  {
    "code": "23 33 19",
    "label": "Duct Silencers",
    "level": 4
  },
  {
    "code": "23 33 23",
    "label": "Turning Vanes",
    "level": 4
  },
  {
    "code": "23 33 33",
    "label": "Duct-Mounting Access Doors",
    "level": 4
  },
  {
    "code": "23 33 38",
    "label": "Duct Security Bars",
    "level": 4
  },
  {
    "code": "23 33 43",
    "label": "Flexible Connectors",
    "level": 4
  },
  {
    "code": "23 33 46",
    "label": "Flexible Ducts",
    "level": 4
  },
  {
    "code": "23 33 53",
    "label": "Duct Liners",
    "level": 4
  },
  {
    "code": "23 34 00",
    "label": "HVAC Fans",
    "level": 3
  },
  {
    "code": "23 34 13",
    "label": "Axial HVAC Fans",
    "level": 4
  },
  {
    "code": "23 34 16",
    "label": "Centrifugal HVAC Fans",
    "level": 4
  },
  {
    "code": "23 34 23",
    "label": "HVAC Power Ventilators",
    "level": 4
  },
  {
    "code": "23 34 33",
    "label": "Air Curtains",
    "level": 4
  },
  {
    "code": "23 34 39",
    "label": "High-Volume, Low-Speed Propeller Fans",
    "level": 4
  },
  {
    "code": "23 35 00",
    "label": "Special Exhaust Systems",
    "level": 3
  },
  {
    "code": "23 35 13",
    "label": "Dust Collection Systems",
    "level": 4
  },
  {
    "code": "23 35 13.13",
    "label": "Sawdust Collection Systems",
    "level": 5
  },
  {
    "code": "23 35 16",
    "label": "Engine Exhaust Systems",
    "level": 4
  },
  {
    "code": "23 35 16.13",
    "label": "Positive-Pressure Engine Exhaust Systems",
    "level": 5
  },
  {
    "code": "23 35 16.16",
    "label": "Mechanical Engine Exhaust Systems",
    "level": 5
  },
  {
    "code": "23 35 33",
    "label": "Listed Kitchen Ventilation Exhaust System",
    "level": 4
  },
  {
    "code": "23 36 00",
    "label": "Air Terminal Units",
    "level": 3
  },
  {
    "code": "23 36 13",
    "label": "Constant-Air-Volume Units",
    "level": 4
  },
  {
    "code": "23 36 16",
    "label": "Variable-Air-Volume Units",
    "level": 4
  },
  {
    "code": "23 37 00",
    "label": "Air Outlets and Inlets",
    "level": 3
  },
  {
    "code": "23 37 13",
    "label": "Diffusers, Registers, and Grilles",
    "level": 4
  },
  {
    "code": "23 37 13.43",
    "label": "Security Registers and Grilles",
    "level": 5
  },
  {
    "code": "23 37 16",
    "label": "Fabric Air Distribution Devices",
    "level": 4
  },
  {
    "code": "23 37 23",
    "label": "HVAC Gravity Ventilators",
    "level": 4
  },
  {
    "code": "23 37 23.13",
    "label": "HVAC Gravity Dome Ventilators",
    "level": 5
  },
  {
    "code": "23 37 23.16",
    "label": "HVAC Gravity Louvered-Penthouse Ventilators",
    "level": 5
  },
  {
    "code": "23 37 23.19",
    "label": "HVAC Gravity Upblast Ventilators",
    "level": 5
  },
  {
    "code": "23 38 00",
    "label": "Ventilation Hoods",
    "level": 3
  },
  {
    "code": "23 38 13",
    "label": "Commercial-Kitchen Hoods",
    "level": 4
  },
  {
    "code": "23 38 13.13",
    "label": "Listed Commercial-Kitchen Hoods",
    "level": 5
  },
  {
    "code": "23 38 13.16",
    "label": "Standard Commercial-Kitchen Hoods",
    "level": 5
  },
  {
    "code": "23 38 16",
    "label": "Fume Hoods",
    "level": 4
  },
  {
    "code": "23 40 00",
    "label": "HVAC Air Cleaning Devices",
    "level": 2
  },
  {
    "code": "23 41 00",
    "label": "Particulate Air Filtration",
    "level": 3
  },
  {
    "code": "23 41 13",
    "label": "Panel Air Filters",
    "level": 4
  },
  {
    "code": "23 41 16",
    "label": "Renewable-Media Air Filters",
    "level": 4
  },
  {
    "code": "23 41 19",
    "label": "Washable Air Filters",
    "level": 4
  },
  {
    "code": "23 41 23",
    "label": "Extended Surface Filters",
    "level": 4
  },
  {
    "code": "23 41 33",
    "label": "High-Efficiency Particulate Filtration",
    "level": 4
  },
  {
    "code": "23 41 43",
    "label": "Ultra-Low Penetration Filtration",
    "level": 4
  },
  {
    "code": "23 41 46",
    "label": "Super Ultra-Low Penetration Filtration",
    "level": 4
  },
  {
    "code": "23 42 00",
    "label": "Gas-Phase Air Filtration",
    "level": 3
  },
  {
    "code": "23 42 13",
    "label": "Activated-Carbon Air Filtration",
    "level": 4
  },
  {
    "code": "23 42 16",
    "label": "Chemically-Impregnated Adsorption Air Filtration",
    "level": 4
  },
  {
    "code": "23 42 19",
    "label": "Catalytic-Adsorption Air Filtration",
    "level": 4
  },
  {
    "code": "23 43 00",
    "label": "Electronic Air Cleaners",
    "level": 3
  },
  {
    "code": "23 43 13",
    "label": "Washable Electronic Air Cleaners",
    "level": 4
  },
  {
    "code": "23 43 16",
    "label": "Agglomerator Electronic Air Cleaners",
    "level": 4
  },
  {
    "code": "23 43 23",
    "label": "Self-Contained Electronic Air Cleaners",
    "level": 4
  },
  {
    "code": "23 50 00",
    "label": "Central Heating Equipment",
    "level": 2
  },
  {
    "code": "23 51 00",
    "label": "Breechings, Chimneys, and Stacks",
    "level": 3
  },
  {
    "code": "23 51 13",
    "label": "Draft Control Devices",
    "level": 4
  },
  {
    "code": "23 51 13.11",
    "label": "Draft Control Fans",
    "level": 5
  },
  {
    "code": "23 51 13.13",
    "label": "Draft-Induction Fans",
    "level": 5
  },
  {
    "code": "23 51 13.16",
    "label": "Vent Dampers",
    "level": 5
  },
  {
    "code": "23 51 13.19",
    "label": "Barometric Dampers",
    "level": 5
  },
  {
    "code": "23 51 16",
    "label": "Fabricated Breechings and Accessories",
    "level": 4
  },
  {
    "code": "23 51 19",
    "label": "Fabricated Stacks",
    "level": 4
  },
  {
    "code": "23 51 23",
    "label": "Gas Vents",
    "level": 4
  },
  {
    "code": "23 51 33",
    "label": "Insulated Sectional Chimneys",
    "level": 4
  },
  {
    "code": "23 51 43",
    "label": "Flue-Gas Filtration Equipment",
    "level": 4
  },
  {
    "code": "23 51 43.13",
    "label": "Gaseous Filtration",
    "level": 5
  },
  {
    "code": "23 51 43.16",
    "label": "Particulate Filtration",
    "level": 5
  },
  {
    "code": "23 52 00",
    "label": "Heating Boilers",
    "level": 3
  },
  {
    "code": "23 52 13",
    "label": "Electric Boilers",
    "level": 4
  },
  {
    "code": "23 52 16",
    "label": "Condensing Boilers",
    "level": 4
  },
  {
    "code": "23 52 16.13",
    "label": "Stainless-Steel Condensing Boilers",
    "level": 5
  },
  {
    "code": "23 52 16.16",
    "label": "Aluminum Condensing Boilers",
    "level": 5
  },
  {
    "code": "23 52 17",
    "label": "Low Mass Boilers",
    "level": 4
  },
  {
    "code": "23 52 19",
    "label": "Pulse Combustion Boilers",
    "level": 4
  },
  {
    "code": "23 52 23",
    "label": "Cast-Iron Boilers",
    "level": 4
  },
  {
    "code": "23 52 33",
    "label": "Water-Tube Boilers",
    "level": 4
  },
  {
    "code": "23 52 33.13",
    "label": "Finned Water-Tube Boilers",
    "level": 5
  },
  {
    "code": "23 52 33.14",
    "label": "Flexible Water-Tube Boilers",
    "level": 5
  },
  {
    "code": "23 52 33.16",
    "label": "Steel Water-Tube Boilers",
    "level": 5
  },
  {
    "code": "23 52 33.19",
    "label": "Copper Water-Tube Boilers",
    "level": 5
  },
  {
    "code": "23 52 39",
    "label": "Fire-Tube Boilers",
    "level": 4
  },
  {
    "code": "23 52 39.13",
    "label": "Scotch Marine Boilers",
    "level": 5
  },
  {
    "code": "23 52 39.16",
    "label": "Steel Fire-Tube Boilers",
    "level": 5
  },
  {
    "code": "23 52 83",
    "label": "Boiler Blowdown Systems",
    "level": 4
  },
  {
    "code": "23 53 00",
    "label": "Heating Boiler Feedwater Equipment",
    "level": 3
  },
  {
    "code": "23 53 13",
    "label": "Boiler Feedwater Pumps",
    "level": 4
  },
  {
    "code": "23 53 16",
    "label": "Deaerators",
    "level": 4
  },
  {
    "code": "23 54 00",
    "label": "Furnaces",
    "level": 3
  },
  {
    "code": "23 54 13",
    "label": "Electric-Resistance Furnaces",
    "level": 4
  },
  {
    "code": "23 54 16",
    "label": "Fuel-Fired Furnaces",
    "level": 4
  },
  {
    "code": "23 54 16.13",
    "label": "Gas-Fired Furnaces",
    "level": 5
  },
  {
    "code": "23 54 16.16",
    "label": "Oil-Fired Furnaces",
    "level": 5
  },
  {
    "code": "23 55 00",
    "label": "Fuel-Fired Heaters",
    "level": 3
  },
  {
    "code": "23 55 13",
    "label": "Fuel-Fired Duct Heaters",
    "level": 4
  },
  {
    "code": "23 55 13.13",
    "label": "Oil-Fired Duct Heaters",
    "level": 5
  },
  {
    "code": "23 55 13.16",
    "label": "Gas-Fired Duct Heaters",
    "level": 5
  },
  {
    "code": "23 55 23",
    "label": "Gas-Fired Radiant Heaters",
    "level": 4
  },
  {
    "code": "23 55 23.13",
    "label": "Low-Intensity Gas-Fired Radiant Heaters",
    "level": 5
  },
  {
    "code": "23 55 23.16",
    "label": "High-Intensity Gas-Fired Radiant Heaters",
    "level": 5
  },
  {
    "code": "23 55 33",
    "label": "Fuel-Fired Unit Heaters",
    "level": 4
  },
  {
    "code": "23 55 33.13",
    "label": "Oil-Fired Unit Heaters",
    "level": 5
  },
  {
    "code": "23 55 33.16",
    "label": "Gas-Fired Unit Heaters",
    "level": 5
  },
  {
    "code": "23 56 00",
    "label": "Solar Energy Heating Equipment",
    "level": 3
  },
  {
    "code": "23 56 13",
    "label": "Heating Solar Collectors",
    "level": 4
  },
  {
    "code": "23 56 13.13",
    "label": "Heating Solar Flat-Plate Collectors",
    "level": 5
  },
  {
    "code": "23 56 13.16",
    "label": "Heating Solar Concentrating Collectors",
    "level": 5
  },
  {
    "code": "23 56 13.19",
    "label": "Heating Solar Vacuum-Tube Collectors",
    "level": 5
  },
  {
    "code": "23 56 16",
    "label": "Packaged Solar Heating Equipment",
    "level": 4
  },
  {
    "code": "23 56 23",
    "label": "Solar Air-Heating Panels",
    "level": 4
  },
  {
    "code": "23 57 00",
    "label": "Heat Exchangers for HVAC",
    "level": 3
  },
  {
    "code": "23 57 13",
    "label": "Steam-to-Steam Heat Exchangers",
    "level": 4
  },
  {
    "code": "23 57 16",
    "label": "Steam-to-Water Heat Exchangers",
    "level": 4
  },
  {
    "code": "23 57 19",
    "label": "Liquid-to-Liquid Heat Exchangers",
    "level": 4
  },
  {
    "code": "23 57 19.13",
    "label": "Plate-Type, Liquid-to-Liquid Heat Exchangers",
    "level": 5
  },
  {
    "code": "23 57 19.16",
    "label": "Shell-Type, Liquid-to-Liquid Heat Exchangers",
    "level": 5
  },
  {
    "code": "23 57 33",
    "label": "Direct Geoexchange Heat Exchangers",
    "level": 4
  },
  {
    "code": "23 60 00",
    "label": "Central Cooling Equipment",
    "level": 2
  },
  {
    "code": "23 61 00",
    "label": "Refrigerant Compressors",
    "level": 3
  },
  {
    "code": "23 61 13",
    "label": "Centrifugal Refrigerant Compressors",
    "level": 4
  },
  {
    "code": "23 61 13.13",
    "label": "Non-Condensable Gas Purge Equipment",
    "level": 5
  },
  {
    "code": "23 61 16",
    "label": "Reciprocating Refrigerant Compressors",
    "level": 4
  },
  {
    "code": "23 61 19",
    "label": "Scroll Refrigerant Compressors",
    "level": 4
  },
  {
    "code": "23 61 23",
    "label": "Rotary-Screw Refrigerant Compressors",
    "level": 4
  },
  {
    "code": "23 62 00",
    "label": "Packaged Compressor and Condenser Units",
    "level": 3
  },
  {
    "code": "23 62 13",
    "label": "Packaged Air-Cooled Refrigerant Compressor and Condenser Units",
    "level": 4
  },
  {
    "code": "23 62 23",
    "label": "Packaged Water-Cooled Refrigerant Compressor and Condenser Units",
    "level": 4
  },
  {
    "code": "23 62 46",
    "label": "Packaged Variable-Refrigerant-Flow Air-Conditioning Systems",
    "level": 4
  },
  {
    "code": "23 63 00",
    "label": "Refrigerant Condensers",
    "level": 3
  },
  {
    "code": "23 63 13",
    "label": "Air-Cooled Refrigerant Condensers",
    "level": 4
  },
  {
    "code": "23 63 23",
    "label": "Water-Cooled Refrigerant Condensers",
    "level": 4
  },
  {
    "code": "23 63 33",
    "label": "Evaporative Refrigerant Condensers",
    "level": 4
  },
  {
    "code": "23 64 00",
    "label": "Packaged Water Chillers",
    "level": 3
  },
  {
    "code": "23 64 13",
    "label": "Absorption Water Chillers",
    "level": 4
  },
  {
    "code": "23 64 13.13",
    "label": "Direct-Fired Absorption Water Chillers",
    "level": 5
  },
  {
    "code": "23 64 13.16",
    "label": "Indirect-Fired Absorption Water Chillers",
    "level": 5
  },
  {
    "code": "23 64 16",
    "label": "Centrifugal Water Chillers",
    "level": 4
  },
  {
    "code": "23 64 16.13",
    "label": "Air-Cooled Centrifugal Water Chillers",
    "level": 5
  },
  {
    "code": "23 64 16.16",
    "label": "Water-Cooled Centrifugal Water Chillers",
    "level": 5
  },
  {
    "code": "23 64 19",
    "label": "Reciprocating Water Chillers",
    "level": 4
  },
  {
    "code": "23 64 23",
    "label": "Scroll Water Chillers",
    "level": 4
  },
  {
    "code": "23 64 23.13",
    "label": "Air-Cooled Scroll Water Chillers",
    "level": 5
  },
  {
    "code": "23 64 23.16",
    "label": "Water-Cooled Scroll Water Chillers",
    "level": 5
  },
  {
    "code": "23 64 26",
    "label": "Rotary-Screw Water Chillers",
    "level": 4
  },
  {
    "code": "23 64 26.13",
    "label": "Air-Cooled, Rotary-Screw Water Chillers",
    "level": 5
  },
  {
    "code": "23 64 26.16",
    "label": "Water-Cooled, Rotary-Screw Water Chillers",
    "level": 5
  },
  {
    "code": "23 64 33",
    "label": "Modular Water Chillers",
    "level": 4
  },
  {
    "code": "23 64 33.13",
    "label": "Air-Cooled, Modular Water Chillers",
    "level": 5
  },
  {
    "code": "23 64 33.16",
    "label": "Water-Cooled, Modular Water Chillers",
    "level": 5
  },
  {
    "code": "23 65 00",
    "label": "Cooling Towers",
    "level": 3
  },
  {
    "code": "23 65 13",
    "label": "Forced-Draft Cooling Towers",
    "level": 4
  },
  {
    "code": "23 65 13.13",
    "label": "Open-Circuit, Forced-Draft Cooling Towers",
    "level": 5
  },
  {
    "code": "23 65 13.16",
    "label": "Closed-Circuit, Forced-Draft Cooling Towers",
    "level": 5
  },
  {
    "code": "23 65 14",
    "label": "Induced-Draft Cooling Towers",
    "level": 4
  },
  {
    "code": "23 65 14.13",
    "label": "Open-Circuit, Induced-Draft Counterflow Cooling Towers",
    "level": 5
  },
  {
    "code": "23 65 14.14",
    "label": "Open-Circuit, Induced-Draft Crossflow Cooling Towers",
    "level": 5
  },
  {
    "code": "23 65 14.16",
    "label": "Closed-Circuit, Induced-Draft Counterflow Cooling Towers",
    "level": 5
  },
  {
    "code": "23 65 14.17",
    "label": "Closed-Circuit, Induced-Draft Combined-Flow Cooling Towers",
    "level": 5
  },
  {
    "code": "23 65 16",
    "label": "Natural-Draft Cooling Towers",
    "level": 4
  },
  {
    "code": "23 65 23",
    "label": "Field-Erected Cooling Towers",
    "level": 4
  },
  {
    "code": "23 65 33",
    "label": "Liquid Coolers",
    "level": 4
  },
  {
    "code": "23 70 00",
    "label": "Central HVAC Equipment",
    "level": 2
  },
  {
    "code": "23 71 00",
    "label": "Thermal Storage",
    "level": 3
  },
  {
    "code": "23 71 13",
    "label": "Thermal Heat Storage",
    "level": 4
  },
  {
    "code": "23 71 13.13",
    "label": "Room Storage Heaters for Thermal Storage",
    "level": 5
  },
  {
    "code": "23 71 13.16",
    "label": "Heat-Pump Boosters for Thermal Storage",
    "level": 5
  },
  {
    "code": "23 71 13.19",
    "label": "Central Furnace Heat-Storage Units",
    "level": 5
  },
  {
    "code": "23 71 13.23",
    "label": "Pressurized-Water Thermal Storage Tanks",
    "level": 5
  },
  {
    "code": "23 71 16",
    "label": "Chilled-Water Thermal Storage",
    "level": 4
  },
  {
    "code": "23 71 19",
    "label": "Ice Storage",
    "level": 4
  },
  {
    "code": "23 71 19.13",
    "label": "Internal Ice-on-Coil Thermal Storage",
    "level": 5
  },
  {
    "code": "23 71 19.16",
    "label": "External Ice-on-Coil Thermal Storage",
    "level": 5
  },
  {
    "code": "23 71 19.19",
    "label": "Encapsulated-Ice Thermal Storage",
    "level": 5
  },
  {
    "code": "23 71 19.23",
    "label": "Ice-Harvesting Thermal Storage",
    "level": 5
  },
  {
    "code": "23 71 19.26",
    "label": "Ice-Slurry Thermal Storage",
    "level": 5
  },
  {
    "code": "23 72 00",
    "label": "Air-to-Air Energy Recovery Equipment",
    "level": 3
  },
  {
    "code": "23 72 13",
    "label": "Heat-Wheel Air-to-Air Energy-Recovery Equipment",
    "level": 4
  },
  {
    "code": "23 72 16",
    "label": "Heat-Pipe Air-to-Air Energy-Recovery Equipment",
    "level": 4
  },
  {
    "code": "23 72 19",
    "label": "Fixed-Plate Air-to-Air Energy-Recovery Equipment",
    "level": 4
  },
  {
    "code": "23 72 23",
    "label": "Packaged Air-to-Air Energy-Recovery Units",
    "level": 4
  },
  {
    "code": "23 73 00",
    "label": "Indoor Central-Station Air-Handling Units",
    "level": 3
  },
  {
    "code": "23 73 13",
    "label": "Modular Indoor Central-Station Air-Handling Units",
    "level": 4
  },
  {
    "code": "23 73 23",
    "label": "Custom Indoor Central-Station Air-Handling Units",
    "level": 4
  },
  {
    "code": "23 73 33",
    "label": "Indoor Indirect Fuel-Fired Heating and Ventilating Units",
    "level": 4
  },
  {
    "code": "23 73 33.13",
    "label": "Indoor Indirect Oil-Fired Heating and Ventilating Units",
    "level": 5
  },
  {
    "code": "23 73 33.16",
    "label": "Indoor Indirect Gas-Fired Heating and Ventilating Units",
    "level": 5
  },
  {
    "code": "23 73 39",
    "label": "Indoor, Direct Gas-Fired Heating and Ventilating Units",
    "level": 4
  },
  {
    "code": "23 74 00",
    "label": "Packaged Outdoor HVAC Equipment",
    "level": 3
  },
  {
    "code": "23 74 13",
    "label": "Packaged, Outdoor, Central-Station Air-Handling Units",
    "level": 4
  },
  {
    "code": "23 74 16",
    "label": "Packaged Rooftop Air-Conditioning Units",
    "level": 4
  },
  {
    "code": "23 74 16.11",
    "label": "Packaged, Small-Capacity, Rooftop Air-Conditioning Units",
    "level": 5
  },
  {
    "code": "23 74 16.12",
    "label": "Packaged, Intermediate-Capacity, Rooftop Air-Conditioning Units",
    "level": 5
  },
  {
    "code": "23 74 16.13",
    "label": "Packaged, Large-Capacity, Rooftop Air-Conditioning Units",
    "level": 5
  },
  {
    "code": "23 74 23",
    "label": "Packaged, Outdoor, Heating-Only Makeup-Air Units",
    "level": 4
  },
  {
    "code": "23 74 23.13",
    "label": "Packaged, Direct-Fired, Outdoor, Heating-Only Makeup-Air Units",
    "level": 5
  },
  {
    "code": "23 74 23.16",
    "label": "Packaged, Indirect-Fired, Outdoor, Heating-Only Makeup-Air Units",
    "level": 5
  },
  {
    "code": "23 74 33",
    "label": "Dedicated Outdoor-Air Units",
    "level": 4
  },
  {
    "code": "23 75 00",
    "label": "Custom-Packaged Outdoor HVAC Equipment",
    "level": 3
  },
  {
    "code": "23 75 13",
    "label": "Custom-Packaged, Outdoor, Central-Station Air-Handling Units",
    "level": 4
  },
  {
    "code": "23 75 16",
    "label": "Custom-Packaged, Rooftop Air-Conditioning Units",
    "level": 4
  },
  {
    "code": "23 75 23",
    "label": "Custom-Packaged, Outdoor, Heating and Ventilating Makeup-Air Units",
    "level": 4
  },
  {
    "code": "23 75 33",
    "label": "Custom-Packaged, Outdoor, Heating and Cooling Makeup Air-Conditioners",
    "level": 4
  },
  {
    "code": "23 76 00",
    "label": "Evaporative Air-Cooling Equipment",
    "level": 3
  },
  {
    "code": "23 76 13",
    "label": "Direct Evaporative Air Coolers",
    "level": 4
  },
  {
    "code": "23 76 16",
    "label": "Indirect Evaporative Air Coolers",
    "level": 4
  },
  {
    "code": "23 76 19",
    "label": "Combined Direct and Indirect Evaporative Air Coolers",
    "level": 4
  },
  {
    "code": "23 80 00",
    "label": "Decentralized HVAC Equipment",
    "level": 2
  },
  {
    "code": "23 81 00",
    "label": "Decentralized Unitary HVAC Equipment",
    "level": 3
  },
  {
    "code": "23 81 13",
    "label": "Packaged Terminal Air-Conditioners",
    "level": 4
  },
  {
    "code": "23 81 13.11",
    "label": "Packaged Terminal Air-Conditioners, Through-Wall Units",
    "level": 5
  },
  {
    "code": "23 81 13.12",
    "label": "Packaged Terminal Air-Conditioners, Freestanding Units",
    "level": 5
  },
  {
    "code": "23 81 13.13",
    "label": "Packaged Terminal Air-Conditioners, Outdoor, Wall-Mounted Units",
    "level": 5
  },
  {
    "code": "23 81 16",
    "label": "Room Air-Conditioners",
    "level": 4
  },
  {
    "code": "23 81 19",
    "label": "Self-Contained Air-Conditioners",
    "level": 4
  },
  {
    "code": "23 81 19.13",
    "label": "Small-Capacity Self-Contained Air-Conditioners",
    "level": 5
  },
  {
    "code": "23 81 19.16",
    "label": "Large-Capacity Self-Contained Air-Conditioners",
    "level": 5
  },
  {
    "code": "23 81 23",
    "label": "Computer-Room Air-Conditioners",
    "level": 4
  },
  {
    "code": "23 81 23.11",
    "label": "Small-Capacity, Computer-Room Air-Conditioners, Floor Mounted Units",
    "level": 5
  },
  {
    "code": "23 81 23.12",
    "label": "Large-Capacity, Computer-Room Air-Conditioners, Floor-Mounted Units",
    "level": 5
  },
  {
    "code": "23 81 23.13",
    "label": "Computer-Room Air-Conditioners, Ceiling Mounted Units",
    "level": 5
  },
  {
    "code": "23 81 23.14",
    "label": "Computer-Room Air-Conditioners, Console Units",
    "level": 5
  },
  {
    "code": "23 81 23.16",
    "label": "Computer-Room Air-Conditioners, Rack Mounted, Space-Cooling Units",
    "level": 5
  },
  {
    "code": "23 81 23.18",
    "label": "Computer-Room, Rack-Cooling Equipment",
    "level": 5
  },
  {
    "code": "23 81 26",
    "label": "Split-System Air-Conditioners",
    "level": 4
  },
  {
    "code": "23 81 26.13",
    "label": "Small-Capacity Split-System Air-Conditioners",
    "level": 5
  },
  {
    "code": "23 81 26.16",
    "label": "Large-Capacity Split-System Air-Conditioners",
    "level": 5
  },
  {
    "code": "23 81 29",
    "label": "Variable Refrigerant Flow HVAC Systems",
    "level": 4
  },
  {
    "code": "23 81 43",
    "label": "Air-Source Unitary Heat Pumps",
    "level": 4
  },
  {
    "code": "23 81 46",
    "label": "Water-Source Unitary Heat Pumps",
    "level": 4
  },
  {
    "code": "23 81 49",
    "label": "Ground-Source Unitary Heat Pumps",
    "level": 4
  },
  {
    "code": "23 82 00",
    "label": "Convection Heating and Cooling Units",
    "level": 3
  },
  {
    "code": "23 82 13",
    "label": "Valance Heating and Cooling Units",
    "level": 4
  },
  {
    "code": "23 82 14",
    "label": "Chilled Beams",
    "level": 4
  },
  {
    "code": "23 82 16",
    "label": "Air Coils",
    "level": 4
  },
  {
    "code": "23 82 16.11",
    "label": "Hydronic Air Coils",
    "level": 5
  },
  {
    "code": "23 82 16.12",
    "label": "Steam Air Coils",
    "level": 5
  },
  {
    "code": "23 82 16.13",
    "label": "Refrigerant Air Coils",
    "level": 5
  },
  {
    "code": "23 82 16.14",
    "label": "Electric-Resistance Air Coils",
    "level": 5
  },
  {
    "code": "23 82 19",
    "label": "Fan Coil Units",
    "level": 4
  },
  {
    "code": "23 82 23",
    "label": "Unit Ventilators",
    "level": 4
  },
  {
    "code": "23 82 26",
    "label": "Induction Units",
    "level": 4
  },
  {
    "code": "23 82 29",
    "label": "Radiators",
    "level": 4
  },
  {
    "code": "23 82 33",
    "label": "Convectors",
    "level": 4
  },
  {
    "code": "23 82 36",
    "label": "Finned-Tube Radiation Heaters",
    "level": 4
  },
  {
    "code": "23 82 39",
    "label": "Unit Heaters",
    "level": 4
  },
  {
    "code": "23 82 39.13",
    "label": "Cabinet Unit Heaters",
    "level": 5
  },
  {
    "code": "23 82 39.16",
    "label": "Propeller Unit Heaters",
    "level": 5
  },
  {
    "code": "23 82 39.19",
    "label": "Wall and Ceiling Unit Heaters",
    "level": 5
  },
  {
    "code": "23 82 41",
    "label": "Water-to-Water Heat Pumps",
    "level": 4
  },
  {
    "code": "23 83 00",
    "label": "Radiant Heating Units",
    "level": 3
  },
  {
    "code": "23 83 13",
    "label": "Radiant-Heating Electric Cables",
    "level": 4
  },
  {
    "code": "23 83 13.16",
    "label": "Radiant-Heating Electric Mats",
    "level": 5
  },
  {
    "code": "23 83 16",
    "label": "Radiant-Heating Hydronic Piping",
    "level": 4
  },
  {
    "code": "23 83 23",
    "label": "Radiant-Heating Electric Panels",
    "level": 4
  },
  {
    "code": "23 83 33",
    "label": "Electric Radiant Heaters",
    "level": 4
  },
  {
    "code": "23 84 00",
    "label": "Humidity Control Equipment",
    "level": 3
  },
  {
    "code": "23 84 13",
    "label": "Humidifiers",
    "level": 4
  },
  {
    "code": "23 84 13.13",
    "label": "Heated-Pan Humidifiers",
    "level": 5
  },
  {
    "code": "23 84 13.16",
    "label": "Wetted-Element Humidifiers",
    "level": 5
  },
  {
    "code": "23 84 13.19",
    "label": "Atomizing Humidifiers",
    "level": 5
  },
  {
    "code": "23 84 13.23",
    "label": "Direct-Steam-Injection Humidifiers",
    "level": 5
  },
  {
    "code": "23 84 13.26",
    "label": "Jacketed, Steam Humidifiers",
    "level": 5
  },
  {
    "code": "23 84 13.29",
    "label": "Self-Contained Steam Humidifiers",
    "level": 5
  },
  {
    "code": "23 84 13.33",
    "label": "Portable Humidifiers",
    "level": 5
  },
  {
    "code": "23 84 16",
    "label": "Mechanical Dehumidification Units",
    "level": 4
  },
  {
    "code": "23 84 16.13",
    "label": "Outdoor, Mechanical Dehumidification Units",
    "level": 5
  },
  {
    "code": "23 84 16.16",
    "label": "Indoor, Mechanical Dehumidification Units",
    "level": 5
  },
  {
    "code": "23 84 16.33",
    "label": "Portable Dehumidifiers",
    "level": 5
  },
  {
    "code": "23 84 19",
    "label": "Desiccant Dehumidification Units",
    "level": 4
  },
  {
    "code": "25 00 00",
    "label": "Integrated Automation",
    "level": 1
  },
  {
    "code": "25 01 00",
    "label": "Operation and Maintenance of Integrated Automation",
    "level": 3
  },
  {
    "code": "25 01 10",
    "label": "Operation and Maintenance of Integrated Automation Network Equipment",
    "level": 4
  },
  {
    "code": "25 01 20",
    "label": "Operation and Maintenance of Integrated Equipment",
    "level": 4
  },
  {
    "code": "25 01 30",
    "label": "Operation and Maintenance of Integrated Automation Instrumentation and Terminal Devices",
    "level": 4
  },
  {
    "code": "25 01 90",
    "label": "Diagnostic Systems for Integrated Automation",
    "level": 4
  },
  {
    "code": "25 05 00",
    "label": "Common Work Results for Integrated Automation",
    "level": 3
  },
  {
    "code": "25 05 05",
    "label": "Selective Demolition for Integrated Automation",
    "level": 4
  },
  {
    "code": "25 05 13",
    "label": "Conductors and Cables for Integrated Automation",
    "level": 4
  },
  {
    "code": "25 05 26",
    "label": "Grounding and Bonding for Integrated Automation",
    "level": 4
  },
  {
    "code": "25 05 28",
    "label": "Pathways for Integrated Automation",
    "level": 4
  },
  {
    "code": "25 05 28.29",
    "label": "Hangers and Supports for Integrated Automation",
    "level": 5
  },
  {
    "code": "25 05 28.33",
    "label": "Conduits and Backboxes for Integrated Automation",
    "level": 5
  },
  {
    "code": "25 05 28.36",
    "label": "Cable Trays for Integrated Automation",
    "level": 5
  },
  {
    "code": "25 05 28.39",
    "label": "Surface Raceways for Integrated Automation",
    "level": 5
  },
  {
    "code": "25 05 48",
    "label": "Vibration and Seismic Controls for Integrated Automation",
    "level": 4
  },
  {
    "code": "25 05 53",
    "label": "Identification for Integrated Automation",
    "level": 4
  },
  {
    "code": "25 06 00",
    "label": "Schedules for Integrated Automation",
    "level": 3
  },
  {
    "code": "25 06 11",
    "label": "Schedules for Integrated Automation Network",
    "level": 4
  },
  {
    "code": "25 06 12",
    "label": "Schedules for Integrated Automation Network Gateways",
    "level": 4
  },
  {
    "code": "25 06 13",
    "label": "Schedules for Integrated Automation Control and Monitoring Network",
    "level": 4
  },
  {
    "code": "25 06 14",
    "label": "Schedules for Integrated Automation Local Control Units",
    "level": 4
  },
  {
    "code": "25 06 30",
    "label": "Schedules for Integrated Automation Instrumentation and Terminal Devices",
    "level": 4
  },
  {
    "code": "25 08 00",
    "label": "Commissioning of Integrated Automation",
    "level": 3
  },
  {
    "code": "25 10 00",
    "label": "Integrated Automation Network Equipment",
    "level": 2
  },
  {
    "code": "25 11 00",
    "label": "Integrated Automation Network Devices",
    "level": 3
  },
  {
    "code": "25 11 13",
    "label": "Integrated Automation Network Servers",
    "level": 4
  },
  {
    "code": "25 11 16",
    "label": "Integrated Automation Network Routers, Bridges, Switches, Hubs, and Modems",
    "level": 4
  },
  {
    "code": "25 11 19",
    "label": "Integrated Automation Network Operator Workstations",
    "level": 4
  },
  {
    "code": "25 12 00",
    "label": "Integrated Automation Network Gateways",
    "level": 3
  },
  {
    "code": "25 12 13",
    "label": "Hardwired Integration Network Gateways",
    "level": 4
  },
  {
    "code": "25 12 16",
    "label": "Direct-Protocol Integration Network Gateways",
    "level": 4
  },
  {
    "code": "25 12 19",
    "label": "Neutral-Protocol Integration Network Gateways",
    "level": 4
  },
  {
    "code": "25 12 23",
    "label": "Client-Server Information/Database Integration Network Gateways",
    "level": 4
  },
  {
    "code": "25 13 00",
    "label": "Integrated Automation Control and Monitoring Network",
    "level": 3
  },
  {
    "code": "25 13 13",
    "label": "Integrated Automation Control and Monitoring Network Supervisory Control",
    "level": 4
  },
  {
    "code": "25 13 16",
    "label": "Integrated Automation Control and Monitoring Network Integration Panels",
    "level": 4
  },
  {
    "code": "25 13 19",
    "label": "Integrated Automation Control and Monitoring Network Interoperability",
    "level": 4
  },
  {
    "code": "25 14 00",
    "label": "Integrated Automation Local Control Units",
    "level": 3
  },
  {
    "code": "25 14 13",
    "label": "Integrated Automation Remote Control Panels",
    "level": 4
  },
  {
    "code": "25 14 16",
    "label": "Integrated Automation Application-Specific Control Panels",
    "level": 4
  },
  {
    "code": "25 14 19",
    "label": "Integrated Automation Terminal Control Units",
    "level": 4
  },
  {
    "code": "25 14 23",
    "label": "Integrated Automation Field Equipment Panels",
    "level": 4
  },
  {
    "code": "25 15 00",
    "label": "Integrated Automation Software",
    "level": 3
  },
  {
    "code": "25 15 13",
    "label": "Integrated Automation Software for Network Gateways",
    "level": 4
  },
  {
    "code": "25 15 16",
    "label": "Integrated Automation Software for Control and Monitoring Networks",
    "level": 4
  },
  {
    "code": "25 15 19",
    "label": "Integrated Automation Software for Local Control Units",
    "level": 4
  },
  {
    "code": "25 30 00",
    "label": "Integrated Automation Instrumentation and Terminal Devices",
    "level": 2
  },
  {
    "code": "25 31 00",
    "label": "Integrated Automation Instrumentation and Terminal Devices for Facility Equipment",
    "level": 3
  },
  {
    "code": "25 32 00",
    "label": "Integrated Automation Instrumentation and Terminal Devices for Conveying Equipment",
    "level": 3
  },
  {
    "code": "25 33 00",
    "label": "Integrated Automation Instrumentation and Terminal Devices for Fire-Suppression Systems",
    "level": 3
  },
  {
    "code": "25 34 00",
    "label": "Integrated Automation Instrumentation and Terminal Devices for Plumbing",
    "level": 3
  },
  {
    "code": "25 35 00",
    "label": "Integrated Automation Instrumentation and Terminal Devices for HVAC",
    "level": 3
  },
  {
    "code": "25 35 13",
    "label": "Integrated Automation Actuators and Operators",
    "level": 4
  },
  {
    "code": "25 35 16",
    "label": "Integrated Automation Sensors and Transmitters",
    "level": 4
  },
  {
    "code": "25 35 19",
    "label": "Integrated Automation Control Valves",
    "level": 4
  },
  {
    "code": "25 35 23",
    "label": "Integrated Automation Control Dampers",
    "level": 4
  },
  {
    "code": "25 35 26",
    "label": "Integrated Automation Compressed Air Supply",
    "level": 4
  },
  {
    "code": "25 36 00",
    "label": "Integrated Automation Instrumentation and Terminal Devices for Electrical Systems",
    "level": 3
  },
  {
    "code": "25 36 13",
    "label": "Integrated Automation Power Meters",
    "level": 4
  },
  {
    "code": "25 36 16",
    "label": "Integrated Automation KW Transducers",
    "level": 4
  },
  {
    "code": "25 36 19",
    "label": "Integrated Automation Current Sensors",
    "level": 4
  },
  {
    "code": "25 36 23",
    "label": "Integrated Automation Battery Monitors",
    "level": 4
  },
  {
    "code": "25 36 26",
    "label": "Integrated Automation Lighting Relays",
    "level": 4
  },
  {
    "code": "25 36 29",
    "label": "Integrated Automation UPS Monitors",
    "level": 4
  },
  {
    "code": "25 37 00",
    "label": "Integrated Automation Instrumentation and Terminal Devices for Communications Systems",
    "level": 3
  },
  {
    "code": "25 38 00",
    "label": "Integrated Automation Instrumentation and Terminal Devices for Electronic Safety and Security Systems",
    "level": 3
  },
  {
    "code": "25 50 00",
    "label": "Integrated Automation Facility Controls",
    "level": 2
  },
  {
    "code": "25 51 00",
    "label": "Integrated Automation Control of Facility Equipment",
    "level": 3
  },
  {
    "code": "25 52 00",
    "label": "Integrated Automation Control of Conveying Equipment",
    "level": 3
  },
  {
    "code": "25 53 00",
    "label": "Integrated Automation Control of Fire-Suppression Systems",
    "level": 3
  },
  {
    "code": "25 54 00",
    "label": "Integrated Automation Control of Plumbing",
    "level": 3
  },
  {
    "code": "25 55 00",
    "label": "Integrated Automation Control of HVAC",
    "level": 3
  },
  {
    "code": "25 56 00",
    "label": "Integrated Automation Control of Electrical Systems",
    "level": 3
  },
  {
    "code": "25 57 00",
    "label": "Integrated Automation Control of Communications Systems",
    "level": 3
  },
  {
    "code": "25 58 00",
    "label": "Integrated Automation Control of Electronic Safety and Security Systems",
    "level": 3
  },
  {
    "code": "25 90 00",
    "label": "Integrated Automation Control Sequences",
    "level": 2
  },
  {
    "code": "25 91 00",
    "label": "Integrated Automation Control Sequences for Facility Equipment",
    "level": 3
  },
  {
    "code": "25 92 00",
    "label": "Integrated Automation Control Sequences for Conveying Equipment",
    "level": 3
  },
  {
    "code": "25 93 00",
    "label": "Integrated Automation Control Sequences for Fire-Suppression Systems",
    "level": 3
  },
  {
    "code": "25 94 00",
    "label": "Integrated Automation Control Sequences for Plumbing",
    "level": 3
  },
  {
    "code": "25 95 00",
    "label": "Integrated Automation Control Sequences for HVAC",
    "level": 3
  },
  {
    "code": "25 96 00",
    "label": "Integrated Automation Control Sequences for Electrical Systems",
    "level": 3
  },
  {
    "code": "25 97 00",
    "label": "Integrated Automation Control Sequences for Communications Systems",
    "level": 3
  },
  {
    "code": "25 98 00",
    "label": "Integrated Automation Control Sequences for Electronic Safety and Security Systems",
    "level": 3
  },
  {
    "code": "26 00 00",
    "label": "Electrical",
    "level": 1
  },
  {
    "code": "26 01 00",
    "label": "Operation and Maintenance of Electrical Systems",
    "level": 3
  },
  {
    "code": "26 01 10",
    "label": "Operation and Maintenance of Medium-Voltage Electrical Distribution",
    "level": 4
  },
  {
    "code": "26 01 20",
    "label": "Operation and Maintenance of Low-Voltage Electrical Distribution",
    "level": 4
  },
  {
    "code": "26 01 26",
    "label": "Maintenance Testing of Electrical Systems",
    "level": 4
  },
  {
    "code": "26 01 30",
    "label": "Operation and Maintenance of Facility Electrical Power Generating and Storing Equipment",
    "level": 4
  },
  {
    "code": "26 01 40",
    "label": "Operation and Maintenance of Electrical Protection Systems",
    "level": 4
  },
  {
    "code": "26 01 40.13",
    "label": "Operation and Maintenance of Lightning Protection Systems",
    "level": 5
  },
  {
    "code": "26 01 50",
    "label": "Operation and Maintenance of Lighting",
    "level": 4
  },
  {
    "code": "26 01 50.51",
    "label": "Luminaire Relamping",
    "level": 5
  },
  {
    "code": "26 01 50.81",
    "label": "Luminaire Replacement",
    "level": 5
  },
  {
    "code": "26 05 00",
    "label": "Common Work Results for Electrical",
    "level": 3
  },
  {
    "code": "26 05 05",
    "label": "Selective Demolition for Electrical",
    "level": 4
  },
  {
    "code": "26 05 13",
    "label": "Medium-Voltage Cables",
    "level": 4
  },
  {
    "code": "26 05 13.13",
    "label": "Medium-Voltage Open Conductors",
    "level": 5
  },
  {
    "code": "26 05 13.16",
    "label": "Medium-Voltage, Single- and Multi-Conductor Cables",
    "level": 5
  },
  {
    "code": "26 05 19",
    "label": "Low-Voltage Electrical Power Conductors and Cables",
    "level": 4
  },
  {
    "code": "26 05 19.13",
    "label": "Undercarpet Electrical Power Cables",
    "level": 5
  },
  {
    "code": "26 05 19.23",
    "label": "Manufactured Wiring Assemblies",
    "level": 5
  },
  {
    "code": "26 05 23",
    "label": "Control-Voltage Electrical Power Cables",
    "level": 4
  },
  {
    "code": "26 05 26",
    "label": "Grounding and Bonding for Electrical Systems",
    "level": 4
  },
  {
    "code": "26 05 29",
    "label": "Hangers and Supports for Electrical Systems",
    "level": 4
  },
  {
    "code": "26 05 33",
    "label": "Raceway and Boxes for Electrical Systems",
    "level": 4
  },
  {
    "code": "26 05 33.13",
    "label": "Conduit for Electrical Systems",
    "level": 5
  },
  {
    "code": "26 05 33.16",
    "label": "Boxes for Electrical Systems",
    "level": 5
  },
  {
    "code": "26 05 33.23",
    "label": "Surface raceways for Electrical Systems",
    "level": 5
  },
  {
    "code": "26 05 36",
    "label": "Cable Trays for Electrical Systems",
    "level": 4
  },
  {
    "code": "26 05 39",
    "label": "Underfloor Raceways for Electrical Systems",
    "level": 4
  },
  {
    "code": "26 05 43",
    "label": "Underground Ducts and Raceways for Electrical Systems",
    "level": 4
  },
  {
    "code": "26 05 44",
    "label": "Sleeves and Sleeve Seals for Electrical Raceways and Cabling",
    "level": 4
  },
  {
    "code": "26 05 46",
    "label": "Poles for Electrical Systems",
    "level": 4
  },
  {
    "code": "26 05 48",
    "label": "Vibration and Seismic Controls for Electrical Systems",
    "level": 4
  },
  {
    "code": "26 05 48.16",
    "label": "Seismic Controls for Electrical Systems",
    "level": 5
  },
  {
    "code": "26 05 53",
    "label": "Identification for Electrical Systems",
    "level": 4
  },
  {
    "code": "26 05 73",
    "label": "Power System Studies",
    "level": 4
  },
  {
    "code": "26 05 73.13",
    "label": "Short-Circuit Studies",
    "level": 5
  },
  {
    "code": "26 05 73.16",
    "label": "Coordination Studies",
    "level": 5
  },
  {
    "code": "26 05 73.19",
    "label": "Arc-Flash Hazard Analysis",
    "level": 5
  },
  {
    "code": "26 05 73.23",
    "label": "Load Flow Studies",
    "level": 5
  },
  {
    "code": "26 05 73.26",
    "label": "Stability Studies",
    "level": 5
  },
  {
    "code": "26 05 73.29",
    "label": "Harmonic-Analysis Studies",
    "level": 5
  },
  {
    "code": "26 05 76",
    "label": "Photometric Studies",
    "level": 4
  },
  {
    "code": "26 05 83",
    "label": "Wiring Connections",
    "level": 4
  },
  {
    "code": "26 06 00",
    "label": "Schedules for Electrical",
    "level": 3
  },
  {
    "code": "26 06 10",
    "label": "Schedules for Medium-Voltage Electrical Distribution",
    "level": 4
  },
  {
    "code": "26 06 20",
    "label": "Schedules for Low-Voltage Electrical Distribution",
    "level": 4
  },
  {
    "code": "26 06 20.13",
    "label": "Electrical Switchboard Schedule",
    "level": 5
  },
  {
    "code": "26 06 20.16",
    "label": "Electrical Panelboard Schedule",
    "level": 5
  },
  {
    "code": "26 06 20.19",
    "label": "Electrical Motor-Control Center Schedule",
    "level": 5
  },
  {
    "code": "26 06 20.23",
    "label": "Electrical Circuit Schedule",
    "level": 5
  },
  {
    "code": "26 06 20.26",
    "label": "Wiring Device Schedule",
    "level": 5
  },
  {
    "code": "26 06 30",
    "label": "Schedules for Facility Electrical Power Generating and Storing Equipment",
    "level": 4
  },
  {
    "code": "26 06 40",
    "label": "Schedules for Electrical Protection Systems",
    "level": 4
  },
  {
    "code": "26 06 50",
    "label": "Schedules for Lighting",
    "level": 4
  },
  {
    "code": "26 06 50.13",
    "label": "Lighting Panelboard Schedule",
    "level": 5
  },
  {
    "code": "26 06 50.16",
    "label": "Lighting Fixture Schedule",
    "level": 5
  },
  {
    "code": "26 08 00",
    "label": "Commissioning of Electrical Systems",
    "level": 3
  },
  {
    "code": "26 09 00",
    "label": "Instrumentation and Control for Electrical Systems",
    "level": 3
  },
  {
    "code": "26 09 13",
    "label": "Electrical Power Monitoring",
    "level": 4
  },
  {
    "code": "26 09 15",
    "label": "Peak Load Controllers",
    "level": 4
  },
  {
    "code": "26 09 16",
    "label": "Electrical Controls and Relays",
    "level": 4
  },
  {
    "code": "26 09 17",
    "label": "Programmable Controllers",
    "level": 4
  },
  {
    "code": "26 09 19",
    "label": "Enclosed Contactors",
    "level": 4
  },
  {
    "code": "26 09 23",
    "label": "Lighting Control Devices",
    "level": 4
  },
  {
    "code": "26 09 26",
    "label": "Lighting Control Panelboards",
    "level": 4
  },
  {
    "code": "26 09 33",
    "label": "Central Dimming Controls",
    "level": 4
  },
  {
    "code": "26 09 33.13",
    "label": "Multichannel Remote-Controlled Dimmers",
    "level": 5
  },
  {
    "code": "26 09 33.16",
    "label": "Remote-Controlled Dimming Stations",
    "level": 5
  },
  {
    "code": "26 09 36",
    "label": "Modular Dimming Controls",
    "level": 4
  },
  {
    "code": "26 09 36.13",
    "label": "Manual Modular Dimming Controls",
    "level": 5
  },
  {
    "code": "26 09 36.16",
    "label": "Integrated Multipreset Modular Dimming Controls",
    "level": 5
  },
  {
    "code": "26 09 36.19",
    "label": "Standalone Multipreset Modular Dimming",
    "level": 5
  },
  {
    "code": "26 09 43",
    "label": "Network Lighting Controls",
    "level": 4
  },
  {
    "code": "26 09 43.13",
    "label": "Digital-Network Lighting Controls",
    "level": 5
  },
  {
    "code": "26 09 43.16",
    "label": "Addressable Luminaire Lighting Controls",
    "level": 5
  },
  {
    "code": "26 09 43.19",
    "label": "Wireless Network Lighting Controls",
    "level": 5
  },
  {
    "code": "26 09 43.23",
    "label": "Relay-Based Lighting Controls",
    "level": 5
  },
  {
    "code": "26 09 61",
    "label": "Theatrical Lighting Controls",
    "level": 4
  },
  {
    "code": "26 10 00",
    "label": "Medium-Voltage Electrical Distribution",
    "level": 2
  },
  {
    "code": "26 11 00",
    "label": "Substations",
    "level": 3
  },
  {
    "code": "26 11 13",
    "label": "Primary Unit Substations",
    "level": 4
  },
  {
    "code": "26 11 16",
    "label": "Secondary Unit Substations",
    "level": 4
  },
  {
    "code": "26 11 16.11",
    "label": "Secondary Unit Substations with Switchgear Secondary",
    "level": 5
  },
  {
    "code": "26 11 16.12",
    "label": "Secondary Unit Substations with Switchboard Secondary",
    "level": 5
  },
  {
    "code": "26 11 16.13",
    "label": "Secondary Unit Substations with Motor Control Center Secondary",
    "level": 5
  },
  {
    "code": "26 12 00",
    "label": "Medium-Voltage Transformers",
    "level": 3
  },
  {
    "code": "26 12 13",
    "label": "Liquid-Filled, Medium-Voltage Transformers",
    "level": 4
  },
  {
    "code": "26 12 16",
    "label": "Dry-Type, Medium-Voltage Transformers",
    "level": 4
  },
  {
    "code": "26 12 19",
    "label": "Pad-Mounted, Liquid-Filled, Medium-Voltage Transformers",
    "level": 4
  },
  {
    "code": "26 13 00",
    "label": "Medium-Voltage Switchgear",
    "level": 3
  },
  {
    "code": "26 13 13",
    "label": "Medium-Voltage Circuit Breaker Switchgear",
    "level": 4
  },
  {
    "code": "26 13 16",
    "label": "Medium-Voltage Fusible Interrupter Switchgear",
    "level": 4
  },
  {
    "code": "26 13 19",
    "label": "Medium-Voltage Vacuum Interrupter Switchgear",
    "level": 4
  },
  {
    "code": "26 13 23",
    "label": "Medium-Voltage Metal-Enclosed Switchgear",
    "level": 4
  },
  {
    "code": "26 13 26",
    "label": "Medium-Voltage Metal-Clad Switchgear",
    "level": 4
  },
  {
    "code": "26 13 29",
    "label": "Medium-Voltage Compartmentalized Switchgear",
    "level": 4
  },
  {
    "code": "26 15 00",
    "label": "Medium-Voltage Enclosed Bus Assemblies",
    "level": 3
  },
  {
    "code": "26 15 13",
    "label": "Medium-Voltage Busways",
    "level": 4
  },
  {
    "code": "26 15 16",
    "label": "Medium-Voltage Cablebus",
    "level": 4
  },
  {
    "code": "26 16 00",
    "label": "Medium-Voltage Metering",
    "level": 3
  },
  {
    "code": "26 18 00",
    "label": "Medium-Voltage Circuit Protection Devices",
    "level": 3
  },
  {
    "code": "26 18 13",
    "label": "Medium-Voltage Cutouts",
    "level": 4
  },
  {
    "code": "26 18 16",
    "label": "Medium-Voltage Fuses",
    "level": 4
  },
  {
    "code": "26 18 19",
    "label": "Medium-Voltage Lightning Arresters",
    "level": 4
  },
  {
    "code": "26 18 23",
    "label": "Medium-Voltage Surge Arresters",
    "level": 4
  },
  {
    "code": "26 18 26",
    "label": "Medium-Voltage Reclosers",
    "level": 4
  },
  {
    "code": "26 18 29",
    "label": "Medium-Voltage Enclosed Bus",
    "level": 4
  },
  {
    "code": "26 18 33",
    "label": "Medium-Voltage Enclosed Fuse Cutouts",
    "level": 4
  },
  {
    "code": "26 18 36",
    "label": "Medium-Voltage Enclosed Fuses",
    "level": 4
  },
  {
    "code": "26 18 39",
    "label": "Medium-Voltage Motor Controllers",
    "level": 4
  },
  {
    "code": "26 20 00",
    "label": "Low-Voltage Electrical Distribution",
    "level": 2
  },
  {
    "code": "26 21 00",
    "label": "Low-Voltage Electrical Service Entrance",
    "level": 3
  },
  {
    "code": "26 21 13",
    "label": "Low-Voltage Overhead Electrical Service Entrance",
    "level": 4
  },
  {
    "code": "26 21 16",
    "label": "Low-Voltage Underground Electrical Service Entrance",
    "level": 4
  },
  {
    "code": "26 22 00",
    "label": "Low-Voltage Transformers",
    "level": 3
  },
  {
    "code": "26 22 13",
    "label": "Low-Voltage Distribution Transformers",
    "level": 4
  },
  {
    "code": "26 22 16",
    "label": "Low-Voltage Buck-Boost Transformers",
    "level": 4
  },
  {
    "code": "26 22 17",
    "label": "Low-Voltage Transformers for Nonlinear Loads",
    "level": 4
  },
  {
    "code": "26 22 18",
    "label": "Low-Voltage Transformers for Load Centers",
    "level": 4
  },
  {
    "code": "26 22 19",
    "label": "Control and Signal Transformers",
    "level": 4
  },
  {
    "code": "26 23 00",
    "label": "Low-Voltage Switchgear",
    "level": 3
  },
  {
    "code": "26 23 13",
    "label": "Paralleling Low-Voltage Switchgear",
    "level": 4
  },
  {
    "code": "26 24 00",
    "label": "Switchboards and Panelboards",
    "level": 3
  },
  {
    "code": "26 24 13",
    "label": "Switchboards",
    "level": 4
  },
  {
    "code": "26 24 16",
    "label": "Panelboards",
    "level": 4
  },
  {
    "code": "26 24 16.16",
    "label": "Electronically Operated Circuit-Breaker Panelboards",
    "level": 5
  },
  {
    "code": "26 24 19",
    "label": "Motor-Control Centers",
    "level": 4
  },
  {
    "code": "26 25 00",
    "label": "Low-Voltage Enclosed Bus Assemblies",
    "level": 3
  },
  {
    "code": "26 25 13",
    "label": "Low-Voltage Busways",
    "level": 4
  },
  {
    "code": "26 25 16",
    "label": "Low-Voltage Cablebus Systems",
    "level": 4
  },
  {
    "code": "26 27 00",
    "label": "Low-Voltage Distribution Equipment",
    "level": 3
  },
  {
    "code": "26 27 13",
    "label": "Electricity Metering",
    "level": 4
  },
  {
    "code": "26 27 16",
    "label": "Electrical Cabinets and Enclosures",
    "level": 4
  },
  {
    "code": "26 27 19",
    "label": "Multi-Outlet Assemblies",
    "level": 4
  },
  {
    "code": "26 27 23",
    "label": "Indoor Service Poles",
    "level": 4
  },
  {
    "code": "26 27 26",
    "label": "Wiring Devices",
    "level": 4
  },
  {
    "code": "26 27 33",
    "label": "Power Distribution Units",
    "level": 4
  },
  {
    "code": "26 27 73",
    "label": "Door Chimes",
    "level": 4
  },
  {
    "code": "26 28 00",
    "label": "Low-Voltage Circuit Protective Devices",
    "level": 3
  },
  {
    "code": "26 28 13",
    "label": "Fuses",
    "level": 4
  },
  {
    "code": "26 28 16",
    "label": "Enclosed Switches and Circuit Breakers",
    "level": 4
  },
  {
    "code": "26 28 16.13",
    "label": "Enclosed Circuit Breakers",
    "level": 5
  },
  {
    "code": "26 28 16.16",
    "label": "Enclosed Switches",
    "level": 5
  },
  {
    "code": "26 29 00",
    "label": "Low-Voltage Controllers",
    "level": 3
  },
  {
    "code": "26 29 13",
    "label": "Enclosed Controllers",
    "level": 4
  },
  {
    "code": "26 29 13.13",
    "label": "Across-the-Line Motor Controllers",
    "level": 5
  },
  {
    "code": "26 29 13.16",
    "label": "Reduced-Voltage Motor Controllers",
    "level": 5
  },
  {
    "code": "26 29 23",
    "label": "Variable-Frequency Motor Controllers",
    "level": 4
  },
  {
    "code": "26 29 33",
    "label": "Controllers for Fire Pump Drivers",
    "level": 4
  },
  {
    "code": "26 29 33.13",
    "label": "Full-Service Controllers for Fire Pump Electric-Motor Drivers",
    "level": 5
  },
  {
    "code": "26 29 33.16",
    "label": "Limited-Service Controllers for Fire Pump Electric-Motor Drivers",
    "level": 5
  },
  {
    "code": "26 29 33.19",
    "label": "Controllers for Fire Pump Diesel Engine Drivers",
    "level": 5
  },
  {
    "code": "26 30 00",
    "label": "Facility Electrical Power Generating and Storing Equipment",
    "level": 2
  },
  {
    "code": "26 31 00",
    "label": "Photovoltaic Collectors",
    "level": 3
  },
  {
    "code": "26 32 00",
    "label": "Packaged Generator Assemblies",
    "level": 3
  },
  {
    "code": "26 32 13",
    "label": "Engine Generators",
    "level": 4
  },
  {
    "code": "26 32 13.13",
    "label": "Diesel-Engine-Driven Generator Sets",
    "level": 5
  },
  {
    "code": "26 32 13.16",
    "label": "Gas-Engine-Driven Generator Sets",
    "level": 5
  },
  {
    "code": "26 32 13.26",
    "label": "Gas-Turbine Engine-Driven Generators",
    "level": 5
  },
  {
    "code": "26 32 16",
    "label": "Steam-Turbine Generators",
    "level": 4
  },
  {
    "code": "26 32 19",
    "label": "Hydro-Turbine Generators",
    "level": 4
  },
  {
    "code": "26 32 23",
    "label": "Wind Energy Equipment",
    "level": 4
  },
  {
    "code": "26 32 23.13",
    "label": "Horizontal-Axis Wind Turbines",
    "level": 5
  },
  {
    "code": "26 32 23.16",
    "label": "Vertical-Axis Wind Turbines",
    "level": 5
  },
  {
    "code": "26 32 26",
    "label": "Frequency Changers",
    "level": 4
  },
  {
    "code": "26 32 29",
    "label": "Rotary Converters",
    "level": 4
  },
  {
    "code": "26 32 33",
    "label": "Rotary Uninterruptible Power Units",
    "level": 4
  },
  {
    "code": "26 32 36",
    "label": "Resistive Load Banks",
    "level": 4
  },
  {
    "code": "26 33 00",
    "label": "Battery Equipment",
    "level": 3
  },
  {
    "code": "26 33 13",
    "label": "Batteries",
    "level": 4
  },
  {
    "code": "26 33 16",
    "label": "Battery Racks",
    "level": 4
  },
  {
    "code": "26 33 19",
    "label": "Battery Units",
    "level": 4
  },
  {
    "code": "26 33 23",
    "label": "Central Battery Equipment",
    "level": 4
  },
  {
    "code": "26 33 23.13",
    "label": "Central Battery Equipment for Emergency Lighting",
    "level": 5
  },
  {
    "code": "26 33 33",
    "label": "Static Power Converters",
    "level": 4
  },
  {
    "code": "26 33 43",
    "label": "Battery Chargers",
    "level": 4
  },
  {
    "code": "26 33 46",
    "label": "Battery Monitoring",
    "level": 4
  },
  {
    "code": "26 33 53",
    "label": "Static Uninterruptible Power Supply",
    "level": 4
  },
  {
    "code": "26 35 00",
    "label": "Power Filters and Conditioners",
    "level": 3
  },
  {
    "code": "26 35 13",
    "label": "Capacitors",
    "level": 4
  },
  {
    "code": "26 35 16",
    "label": "Chokes and Inductors",
    "level": 4
  },
  {
    "code": "26 35 23",
    "label": "Electromagnetic-Interference Filters",
    "level": 4
  },
  {
    "code": "26 35 26",
    "label": "Harmonic Filters",
    "level": 4
  },
  {
    "code": "26 35 33",
    "label": "Power Factor Correction Equipment",
    "level": 4
  },
  {
    "code": "26 35 33.13",
    "label": "Medium-Voltage Power Factor Correction Equipment",
    "level": 5
  },
  {
    "code": "26 35 33.16",
    "label": "Low-Voltage Power Factor Correction Equipment",
    "level": 5
  },
  {
    "code": "26 35 36",
    "label": "Slip Controllers",
    "level": 4
  },
  {
    "code": "26 35 43",
    "label": "Static-Frequency Converters",
    "level": 4
  },
  {
    "code": "26 35 46",
    "label": "Radio-Frequency-Interference Filters",
    "level": 4
  },
  {
    "code": "26 35 53",
    "label": "Voltage Regulators",
    "level": 4
  },
  {
    "code": "26 36 00",
    "label": "Transfer Switches",
    "level": 3
  },
  {
    "code": "26 36 13",
    "label": "Manual Transfer Switches",
    "level": 4
  },
  {
    "code": "26 36 23",
    "label": "Automatic Transfer Switches",
    "level": 4
  },
  {
    "code": "26 40 00",
    "label": "Electrical Protection",
    "level": 2
  },
  {
    "code": "26 41 00",
    "label": "Facility Lightning Protection",
    "level": 3
  },
  {
    "code": "26 41 13",
    "label": "Lightning Protection for Structures",
    "level": 4
  },
  {
    "code": "26 41 13.13",
    "label": "Lightning Protection for Buildings",
    "level": 5
  },
  {
    "code": "26 41 16",
    "label": "Lightning Prevention and Dissipation",
    "level": 4
  },
  {
    "code": "26 41 19",
    "label": "Early Streamer Emission Lightning Protection",
    "level": 4
  },
  {
    "code": "26 41 23",
    "label": "Lightning Protection Surge Arresters and Suppressors",
    "level": 4
  },
  {
    "code": "26 43 00",
    "label": "Surge Protective Devices",
    "level": 3
  },
  {
    "code": "26 43 13",
    "label": "Surge Protective Devices for Low-Voltage Electrical Power Circuits",
    "level": 4
  },
  {
    "code": "26 50 00",
    "label": "Lighting",
    "level": 2
  },
  {
    "code": "26 51 00",
    "label": "Interior Lighting",
    "level": 3
  },
  {
    "code": "26 51 13",
    "label": "Incandescent Interior Lighting",
    "level": 4
  },
  {
    "code": "26 51 16",
    "label": "Fluorescent Interior Lighting",
    "level": 4
  },
  {
    "code": "26 51 19",
    "label": "LED Interior Lighting",
    "level": 4
  },
  {
    "code": "26 51 23",
    "label": "HID Interior Lighting",
    "level": 4
  },
  {
    "code": "26 52 00",
    "label": "Safety Lighting",
    "level": 3
  },
  {
    "code": "26 52 13",
    "label": "Emergency and Exit Lighting",
    "level": 4
  },
  {
    "code": "26 52 13.13",
    "label": "Emergency Lighting",
    "level": 5
  },
  {
    "code": "26 52 13.16",
    "label": "Exit Signs",
    "level": 5
  },
  {
    "code": "26 54 00",
    "label": "Classified Location Lighting",
    "level": 3
  },
  {
    "code": "26 54 13",
    "label": "Incandescent Classified Location Lighting",
    "level": 4
  },
  {
    "code": "26 54 16",
    "label": "Fluorescent Classified Location Lighting",
    "level": 4
  },
  {
    "code": "26 54 19",
    "label": "LED Classified Location Lighting",
    "level": 4
  },
  {
    "code": "26 55 00",
    "label": "Special Purpose Lighting",
    "level": 3
  },
  {
    "code": "26 55 23",
    "label": "Outline Lighting",
    "level": 4
  },
  {
    "code": "26 55 29",
    "label": "Underwater Lighting",
    "level": 4
  },
  {
    "code": "26 55 33",
    "label": "Hazard Warning Lighting",
    "level": 4
  },
  {
    "code": "26 55 36",
    "label": "Obstruction Lighting",
    "level": 4
  },
  {
    "code": "26 55 39",
    "label": "Helipad Lighting",
    "level": 4
  },
  {
    "code": "26 55 53",
    "label": "Security Lighting",
    "level": 4
  },
  {
    "code": "26 55 59",
    "label": "Display Lighting",
    "level": 4
  },
  {
    "code": "26 55 61",
    "label": "Theatrical Lighting",
    "level": 4
  },
  {
    "code": "26 55 63",
    "label": "Detention Lighting",
    "level": 4
  },
  {
    "code": "26 55 68",
    "label": "Athletic Field Lighting",
    "level": 4
  },
  {
    "code": "26 55 70",
    "label": "Healthcare Lighting",
    "level": 4
  },
  {
    "code": "26 55 83",
    "label": "Broadcast Lighting",
    "level": 4
  },
  {
    "code": "26 56 00",
    "label": "Exterior Lighting",
    "level": 3
  },
  {
    "code": "26 56 13",
    "label": "Lighting Poles and Standards",
    "level": 4
  },
  {
    "code": "26 56 17",
    "label": "Fluorescent Exterior Lighting",
    "level": 4
  },
  {
    "code": "26 56 18",
    "label": "Incandescent Exterior Lighting",
    "level": 4
  },
  {
    "code": "26 56 19",
    "label": "LED Exterior Lighting",
    "level": 4
  },
  {
    "code": "26 56 21",
    "label": "HID Exterior Lighting",
    "level": 4
  },
  {
    "code": "27 00 00",
    "label": "Communications",
    "level": 1
  },
  {
    "code": "27 01 00",
    "label": "Operation and Maintenance of Communications Systems",
    "level": 3
  },
  {
    "code": "27 01 10",
    "label": "Operation and Maintenance of Structured Cabling and Enclosures",
    "level": 4
  },
  {
    "code": "27 01 20",
    "label": "Operation and Maintenance of Data Communications",
    "level": 4
  },
  {
    "code": "27 01 30",
    "label": "Operation and Maintenance of Voice Communications",
    "level": 4
  },
  {
    "code": "27 01 40",
    "label": "Operation and Maintenance of Audio-Video Communications",
    "level": 4
  },
  {
    "code": "27 01 50",
    "label": "Operation and Maintenance of Distributed Communications and Monitoring",
    "level": 4
  },
  {
    "code": "27 05 00",
    "label": "Common Work Results for Communications",
    "level": 3
  },
  {
    "code": "27 05 05",
    "label": "Selective Demolition for Communications",
    "level": 4
  },
  {
    "code": "27 05 11",
    "label": "Cameras for Audio-Visual Systems",
    "level": 4
  },
  {
    "code": "27 05 13",
    "label": "Communications Services",
    "level": 4
  },
  {
    "code": "27 05 13.13",
    "label": "Dialtone Services",
    "level": 5
  },
  {
    "code": "27 05 13.23",
    "label": "T1 Services",
    "level": 5
  },
  {
    "code": "27 05 13.33",
    "label": "DSL Services",
    "level": 5
  },
  {
    "code": "27 05 13.43",
    "label": "Cable Services",
    "level": 5
  },
  {
    "code": "27 05 13.53",
    "label": "Satellite Services",
    "level": 5
  },
  {
    "code": "27 05 26",
    "label": "Grounding and Bonding for Communications Systems",
    "level": 4
  },
  {
    "code": "27 05 28",
    "label": "Pathways for Communications Systems",
    "level": 4
  },
  {
    "code": "27 05 29",
    "label": "Hangers and Supports for Communications Systems",
    "level": 4
  },
  {
    "code": "27 05 33",
    "label": "Conduits and Backboxes for Communications Systems",
    "level": 4
  },
  {
    "code": "27 05 36",
    "label": "Cable Trays for Communications Systems",
    "level": 4
  },
  {
    "code": "27 05 39",
    "label": "Surface Raceways for Communications Systems",
    "level": 4
  },
  {
    "code": "27 05 43",
    "label": "Underground Ducts and Raceways for Communications Systems",
    "level": 4
  },
  {
    "code": "27 05 44",
    "label": "Sleeves and Sleeve Seals for Communications Pathways and Cabling",
    "level": 4
  },
  {
    "code": "27 05 46",
    "label": "Utility Poles for Communications Systems",
    "level": 4
  },
  {
    "code": "27 05 48",
    "label": "Vibration and Seismic Controls for Communications Systems",
    "level": 4
  },
  {
    "code": "27 05 48.16",
    "label": "Seismic Controls for Communications Systems",
    "level": 5
  },
  {
    "code": "27 05 53",
    "label": "Identification for Communications Systems",
    "level": 4
  },
  {
    "code": "27 06 00",
    "label": "Schedules for Communications",
    "level": 3
  },
  {
    "code": "27 06 10",
    "label": "Schedules for Structured Cabling and Enclosures",
    "level": 4
  },
  {
    "code": "27 06 20",
    "label": "Schedules for Data Communications",
    "level": 4
  },
  {
    "code": "27 06 30",
    "label": "Schedules for Voice Communications",
    "level": 4
  },
  {
    "code": "27 06 40",
    "label": "Schedules for Audio-Video Communications",
    "level": 4
  },
  {
    "code": "27 06 50",
    "label": "Schedules for Distributed Communications and Monitoring",
    "level": 4
  },
  {
    "code": "27 08 00",
    "label": "Commissioning of Communications",
    "level": 3
  },
  {
    "code": "27 10 00",
    "label": "Structured Cabling",
    "level": 2
  },
  {
    "code": "27 11 00",
    "label": "Communications Equipment Room Fittings",
    "level": 3
  },
  {
    "code": "27 11 13",
    "label": "Communications Entrance Protection",
    "level": 4
  },
  {
    "code": "27 11 16",
    "label": "Communications Cabinets, Racks, Frames, and Enclosures",
    "level": 4
  },
  {
    "code": "27 11 19",
    "label": "Communications Termination Blocks and Patch Panels",
    "level": 4
  },
  {
    "code": "27 11 23",
    "label": "Communications Cable Management and Ladder Rack",
    "level": 4
  },
  {
    "code": "27 11 26",
    "label": "Communications Rack Mounted Power Protection and Power Strips",
    "level": 4
  },
  {
    "code": "27 13 00",
    "label": "Communications Backbone Cabling",
    "level": 3
  },
  {
    "code": "27 13 13",
    "label": "Communications Copper Backbone Cabling",
    "level": 4
  },
  {
    "code": "27 13 13.13",
    "label": "Communications Copper Cable Splicing and Terminations",
    "level": 5
  },
  {
    "code": "27 13 23",
    "label": "Communications Optical Fiber Backbone Cabling",
    "level": 4
  },
  {
    "code": "27 13 23.13",
    "label": "Communications Optical Fiber Splicing and Terminations",
    "level": 5
  },
  {
    "code": "27 13 33",
    "label": "Communications Coaxial Backbone Cabling",
    "level": 4
  },
  {
    "code": "27 13 33.13",
    "label": "Communications Coaxial Splicing and Terminations",
    "level": 5
  },
  {
    "code": "27 13 43",
    "label": "Communications Services Cabling",
    "level": 4
  },
  {
    "code": "27 13 43.13",
    "label": "Dialtone Services Cabling",
    "level": 5
  },
  {
    "code": "27 13 43.23",
    "label": "T1 Services Cabling",
    "level": 5
  },
  {
    "code": "27 13 43.33",
    "label": "DSL Services Cabling",
    "level": 5
  },
  {
    "code": "27 13 43.43",
    "label": "Cable Services Cabling",
    "level": 5
  },
  {
    "code": "27 13 43.53",
    "label": "Satellite Services Cabling",
    "level": 5
  },
  {
    "code": "27 15 00",
    "label": "Communications Horizontal Cabling",
    "level": 3
  },
  {
    "code": "27 15 01",
    "label": "Communications Horizontal Cabling Applications",
    "level": 4
  },
  {
    "code": "27 15 01.11",
    "label": "Conductors and Cables for Electronic Safety and Security",
    "level": 5
  },
  {
    "code": "27 15 01.13",
    "label": "Video Surveillance Communications Conductors and Cables",
    "level": 5
  },
  {
    "code": "27 15 01.15",
    "label": "Access Control Communications Conductors and Cables",
    "level": 5
  },
  {
    "code": "27 15 01.16",
    "label": "Voice Communications Horizontal Cabling",
    "level": 5
  },
  {
    "code": "27 15 01.17",
    "label": "Intrusion Detection Communications Conductors and Cables",
    "level": 5
  },
  {
    "code": "27 15 01.19",
    "label": "Fire Alarm Communications Conductors and Cables",
    "level": 5
  },
  {
    "code": "27 15 01.23",
    "label": "Audio-Video Communications Horizontal Cabling",
    "level": 5
  },
  {
    "code": "27 15 01.39",
    "label": "Patient Monitoring and Telemetry Communications Horizontal Cabling",
    "level": 5
  },
  {
    "code": "27 15 01.43",
    "label": "Nurse Call and Intercom Communications Horizontal Cabling",
    "level": 5
  },
  {
    "code": "27 15 01.46",
    "label": "Paging Communications Horizontal Cabling",
    "level": 5
  },
  {
    "code": "27 15 01.49",
    "label": "Intermediate Frequency/Radio Frequency Communications Horizontal Cabling",
    "level": 5
  },
  {
    "code": "27 15 01.53",
    "label": "Antennas Communications Horizontal Cabling",
    "level": 5
  },
  {
    "code": "27 15 13",
    "label": "Communications Copper Horizontal Cabling",
    "level": 4
  },
  {
    "code": "27 15 23",
    "label": "Communications Optical Fiber Horizontal Cabling",
    "level": 4
  },
  {
    "code": "27 15 33",
    "label": "Communications Coaxial Horizontal Cabling",
    "level": 4
  },
  {
    "code": "27 15 43",
    "label": "Communications Faceplates and Connectors",
    "level": 4
  },
  {
    "code": "27 16 00",
    "label": "Communications Connecting Cords, Devices, and Adapters",
    "level": 3
  },
  {
    "code": "27 16 13",
    "label": "Communications Custom Cable Assemblies",
    "level": 4
  },
  {
    "code": "27 16 16",
    "label": "Communications Media Converters, Adapters, and Transceivers",
    "level": 4
  },
  {
    "code": "27 16 19",
    "label": "Communications Patch Cords, Station Cords, and Cross Connect Wire",
    "level": 4
  },
  {
    "code": "27 20 00",
    "label": "Data Communications",
    "level": 2
  },
  {
    "code": "27 21 00",
    "label": "Data Communications Network Equipment",
    "level": 3
  },
  {
    "code": "27 21 13",
    "label": "Data Communications Firewalls",
    "level": 4
  },
  {
    "code": "27 21 16",
    "label": "Data Communications Routers, CSU/DSU, Multiplexers, Codecs, and Modems",
    "level": 4
  },
  {
    "code": "27 21 26",
    "label": "Data Communications Network Management",
    "level": 4
  },
  {
    "code": "27 21 29",
    "label": "Data Communications Switches and Hubs",
    "level": 4
  },
  {
    "code": "27 21 33",
    "label": "Data Communications Wireless Access Points",
    "level": 4
  },
  {
    "code": "27 22 00",
    "label": "Data Communications Hardware",
    "level": 3
  },
  {
    "code": "27 22 13",
    "label": "Data Communications Mainframes",
    "level": 4
  },
  {
    "code": "27 22 16",
    "label": "Data Communications Storage and Backup",
    "level": 4
  },
  {
    "code": "27 22 19",
    "label": "Data Communications Servers",
    "level": 4
  },
  {
    "code": "27 22 23",
    "label": "Data Communications Desktops",
    "level": 4
  },
  {
    "code": "27 22 26",
    "label": "Data Communications Laptops",
    "level": 4
  },
  {
    "code": "27 22 29",
    "label": "Data Communications Handhelds",
    "level": 4
  },
  {
    "code": "27 24 00",
    "label": "Data Communications Peripheral Data Equipment",
    "level": 3
  },
  {
    "code": "27 24 13",
    "label": "Printers",
    "level": 4
  },
  {
    "code": "27 24 16",
    "label": "Scanners",
    "level": 4
  },
  {
    "code": "27 24 19",
    "label": "External Drives",
    "level": 4
  },
  {
    "code": "27 24 23",
    "label": "Audio-Video Devices",
    "level": 4
  },
  {
    "code": "27 24 26",
    "label": "Virtual Reality Equipment",
    "level": 4
  },
  {
    "code": "27 24 29",
    "label": "Disaster Recovery Equipment",
    "level": 4
  },
  {
    "code": "27 25 00",
    "label": "Data Communications Software",
    "level": 3
  },
  {
    "code": "27 25 13",
    "label": "Virus Protection Software",
    "level": 4
  },
  {
    "code": "27 25 16",
    "label": "Application Suites",
    "level": 4
  },
  {
    "code": "27 25 19",
    "label": "Email Software",
    "level": 4
  },
  {
    "code": "27 25 23",
    "label": "Graphics/Multimedia Software",
    "level": 4
  },
  {
    "code": "27 25 26",
    "label": "Customer Relationship Management Software",
    "level": 4
  },
  {
    "code": "27 25 29",
    "label": "Operating System Software",
    "level": 4
  },
  {
    "code": "27 25 33",
    "label": "Database Software",
    "level": 4
  },
  {
    "code": "27 25 37",
    "label": "Virtual Private Network Software",
    "level": 4
  },
  {
    "code": "27 25 39",
    "label": "Internet Conferencing Software",
    "level": 4
  },
  {
    "code": "27 26 00",
    "label": "Data Communications Programming and Integration Services",
    "level": 3
  },
  {
    "code": "27 26 13",
    "label": "Web Development",
    "level": 4
  },
  {
    "code": "27 26 16",
    "label": "Database Development",
    "level": 4
  },
  {
    "code": "27 26 19",
    "label": "Application Development",
    "level": 4
  },
  {
    "code": "27 26 23",
    "label": "Network Integration Requirements",
    "level": 4
  },
  {
    "code": "27 26 26",
    "label": "Data Communications Integration Requirements",
    "level": 4
  },
  {
    "code": "27 30 00",
    "label": "Voice Communications",
    "level": 2
  },
  {
    "code": "27 31 00",
    "label": "Voice Communications Switching and Routing Equipment",
    "level": 3
  },
  {
    "code": "27 31 13",
    "label": "PBX/ Key Systems",
    "level": 4
  },
  {
    "code": "27 31 23",
    "label": "Internet Protocol Voice Switches",
    "level": 4
  },
  {
    "code": "27 32 00",
    "label": "Voice Communications Terminal Equipment",
    "level": 3
  },
  {
    "code": "27 32 13",
    "label": "Telephone Sets",
    "level": 4
  },
  {
    "code": "27 32 16",
    "label": "Wireless Transceivers",
    "level": 4
  },
  {
    "code": "27 32 23",
    "label": "Elevator Telephones",
    "level": 4
  },
  {
    "code": "27 32 26",
    "label": "Ring-Down Emergency Telephones",
    "level": 4
  },
  {
    "code": "27 32 29",
    "label": "Facsimiles and Modems",
    "level": 4
  },
  {
    "code": "27 32 36",
    "label": "TTY Equipment",
    "level": 4
  },
  {
    "code": "27 32 43",
    "label": "Radio Communications Equipment",
    "level": 4
  },
  {
    "code": "27 33 00",
    "label": "Voice Communications Messaging",
    "level": 3
  },
  {
    "code": "27 33 16",
    "label": "Voice Mail and Auto Attendant",
    "level": 4
  },
  {
    "code": "27 33 23",
    "label": "Interactive Voice Response",
    "level": 4
  },
  {
    "code": "27 33 26",
    "label": "Facsimile Servers",
    "level": 4
  },
  {
    "code": "27 34 00",
    "label": "Call Accounting",
    "level": 3
  },
  {
    "code": "27 34 13",
    "label": "Toll Fraud Equipment and Software",
    "level": 4
  },
  {
    "code": "27 34 16",
    "label": "Telemanagement Software",
    "level": 4
  },
  {
    "code": "27 35 00",
    "label": "Call Management",
    "level": 3
  },
  {
    "code": "27 35 13",
    "label": "Digital Voice Announcers",
    "level": 4
  },
  {
    "code": "27 35 16",
    "label": "Automatic Call Distributors",
    "level": 4
  },
  {
    "code": "27 35 19",
    "label": "Call Status and Management Displays",
    "level": 4
  },
  {
    "code": "27 35 23",
    "label": "Dedicated 911 Systems",
    "level": 4
  },
  {
    "code": "27 40 00",
    "label": "Audio-Video Communications",
    "level": 2
  },
  {
    "code": "27 41 00",
    "label": "Audio-Video Systems",
    "level": 3
  },
  {
    "code": "27 41 13",
    "label": "Architecturally Integrated Audio-Video Equipment",
    "level": 4
  },
  {
    "code": "27 41 16",
    "label": "Integrated Audio-Video Systems and Equipment",
    "level": 4
  },
  {
    "code": "27 41 16.25",
    "label": "Integrated Audio-Video Systems and Equipment for Restaurants and Bars",
    "level": 5
  },
  {
    "code": "27 41 16.28",
    "label": "Integrated Audio-Video Systems and Equipment for Conference Rooms",
    "level": 5
  },
  {
    "code": "27 41 16.29",
    "label": "Integrated Audio-Video Systems and Equipment for Board Rooms",
    "level": 5
  },
  {
    "code": "27 41 16.51",
    "label": "Integrated Audio-Video Systems and Equipment for Classrooms",
    "level": 5
  },
  {
    "code": "27 41 16.52",
    "label": "Integrated Audio-Video Systems and Equipment for Religious Facilities",
    "level": 5
  },
  {
    "code": "27 41 16.61",
    "label": "Integrated Audio-Video Systems and Equipment for Theaters",
    "level": 5
  },
  {
    "code": "27 41 16.62",
    "label": "Integrated Audio-Video Systems and Equipment for Auditoriums",
    "level": 5
  },
  {
    "code": "27 41 16.63",
    "label": "Integrated Audio-Video Systems and Equipment for Stadiums and Arenas",
    "level": 5
  },
  {
    "code": "27 41 19",
    "label": "Portable Audio-Video Equipment",
    "level": 4
  },
  {
    "code": "27 41 23",
    "label": "Audio-Video Accessories",
    "level": 4
  },
  {
    "code": "27 41 33",
    "label": "Master Antenna Television Systems",
    "level": 4
  },
  {
    "code": "27 41 43",
    "label": "Audio-Video Conferencing",
    "level": 4
  },
  {
    "code": "27 42 00",
    "label": "Electronic Digital Systems",
    "level": 3
  },
  {
    "code": "27 42 13",
    "label": "Point of Sale Systems",
    "level": 4
  },
  {
    "code": "27 42 16",
    "label": "Transportation Information Display Systems",
    "level": 4
  },
  {
    "code": "27 42 19",
    "label": "Public Information Systems",
    "level": 4
  },
  {
    "code": "27 50 00",
    "label": "Distributed Communications and Monitoring Systems",
    "level": 2
  },
  {
    "code": "27 51 00",
    "label": "Distributed Audio-Video Communications Systems",
    "level": 3
  },
  {
    "code": "27 51 13",
    "label": "Paging Systems",
    "level": 4
  },
  {
    "code": "27 51 13.13",
    "label": "Overhead Paging Systems",
    "level": 5
  },
  {
    "code": "27 51 16",
    "label": "Public Address Systems",
    "level": 4
  },
  {
    "code": "27 51 19",
    "label": "Sound Masking Systems",
    "level": 4
  },
  {
    "code": "27 51 23",
    "label": "Intercommunications and Program Systems",
    "level": 4
  },
  {
    "code": "27 51 23.20",
    "label": "Commercial Intercommunications and Program Systems",
    "level": 5
  },
  {
    "code": "27 51 23.30",
    "label": "Residential Intercommunications and Program Systems",
    "level": 5
  },
  {
    "code": "27 51 23.50",
    "label": "Educational Intercommunications and Program Systems",
    "level": 5
  },
  {
    "code": "27 51 23.63",
    "label": "Detention Intercommunications and Program Systems",
    "level": 5
  },
  {
    "code": "27 51 23.70",
    "label": "Healthcare Intercommunications and Program Systems",
    "level": 5
  },
  {
    "code": "27 51 26",
    "label": "Assistive Listening Systems",
    "level": 4
  },
  {
    "code": "27 51 29",
    "label": "Emergency Communications Systems",
    "level": 4
  },
  {
    "code": "27 52 00",
    "label": "Healthcare Communications and Monitoring Systems",
    "level": 3
  },
  {
    "code": "27 52 13",
    "label": "Patient Monitoring and Telemetry Systems",
    "level": 4
  },
  {
    "code": "27 52 16",
    "label": "Telemedicine Systems",
    "level": 4
  },
  {
    "code": "27 52 19",
    "label": "Healthcare Imaging Systems",
    "level": 4
  },
  {
    "code": "27 52 23",
    "label": "Nurse Call/Code Blue Systems",
    "level": 4
  },
  {
    "code": "27 53 00",
    "label": "Distributed Systems",
    "level": 3
  },
  {
    "code": "27 53 13",
    "label": "Clock Systems",
    "level": 4
  },
  {
    "code": "27 53 13.13",
    "label": "Wireless Clock Systems",
    "level": 5
  },
  {
    "code": "27 53 16",
    "label": "Infrared and Radio Frequency Tracking Systems",
    "level": 4
  },
  {
    "code": "27 53 19",
    "label": "Internal Cellular, Paging, and Antenna Systems",
    "level": 4
  },
  {
    "code": "28 00 00",
    "label": "Electronic Safety and Security",
    "level": 1
  },
  {
    "code": "28 01 00",
    "label": "Operation and Maintenance of Electronic Safety and Security",
    "level": 3
  },
  {
    "code": "28 01 10",
    "label": "Operation and Maintenance of Access Control",
    "level": 4
  },
  {
    "code": "28 01 10.51",
    "label": "Maintenance and Administration of Access Control",
    "level": 5
  },
  {
    "code": "28 01 10.71",
    "label": "Revisions and Upgrades of Access Control",
    "level": 5
  },
  {
    "code": "28 01 20",
    "label": "Operation and Maintenance of Video Surveillance",
    "level": 4
  },
  {
    "code": "28 01 20.51",
    "label": "Maintenance and Administration of Video Surveillance",
    "level": 5
  },
  {
    "code": "28 01 20.71",
    "label": "Revisions and Upgrades of Video Surveillance",
    "level": 5
  },
  {
    "code": "28 01 30",
    "label": "Operation and Maintenance of Security Detection, Alarm, and Monitoring",
    "level": 4
  },
  {
    "code": "28 01 30.51",
    "label": "Maintenance and Administration of Security Detection, Alarm, and Monitoring",
    "level": 5
  },
  {
    "code": "28 01 30.71",
    "label": "Revisions and Upgrades of Security Detection, Alarm, and Monitoring",
    "level": 5
  },
  {
    "code": "28 01 50",
    "label": "Operation and Maintenance of Specialized Systems",
    "level": 4
  },
  {
    "code": "28 01 50.51",
    "label": "Maintenance and Administration of Specialized Systems",
    "level": 5
  },
  {
    "code": "28 01 50.71",
    "label": "Revisions and Upgrades of Specialized Systems",
    "level": 5
  },
  {
    "code": "28 01 60",
    "label": "Operation and Maintenance of Mass Notification",
    "level": 4
  },
  {
    "code": "28 01 60.51",
    "label": "Maintenance and Administration of Mass Notification",
    "level": 5
  },
  {
    "code": "28 01 60.71",
    "label": "Revisions and Upgrades of Mass Notification",
    "level": 5
  },
  {
    "code": "28 01 70",
    "label": "Operation and Maintenance of Life Safety",
    "level": 4
  },
  {
    "code": "28 01 70.51",
    "label": "Maintenance and Administration of Life Safety",
    "level": 5
  },
  {
    "code": "28 01 70.71",
    "label": "Revisions and Upgrades of Life Safety",
    "level": 5
  },
  {
    "code": "28 01 80",
    "label": "Operation and Maintenance of Fire Detection and Alarm",
    "level": 4
  },
  {
    "code": "28 01 80.51",
    "label": "Maintenance and Administration of Fire Detection and Alarm",
    "level": 5
  },
  {
    "code": "28 01 80.71",
    "label": "Revisions and Upgrades of Fire Detection and Alarm",
    "level": 5
  },
  {
    "code": "28 05 00",
    "label": "Common Work Results for Electronic Safety and Security",
    "level": 3
  },
  {
    "code": "28 05 07",
    "label": "Power Sources for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 07.11",
    "label": "Power Sources for Access Control",
    "level": 5
  },
  {
    "code": "28 05 07.13",
    "label": "Power Sources for Video Surveillance",
    "level": 5
  },
  {
    "code": "28 05 07.15",
    "label": "Power Sources for Intrusion Detection",
    "level": 5
  },
  {
    "code": "28 05 07.17",
    "label": "Power Sources for Fire Detection and Alarm",
    "level": 5
  },
  {
    "code": "28 05 07.19",
    "label": "Solar Power Sources for Electronic Safety and Security",
    "level": 5
  },
  {
    "code": "28 05 07.21",
    "label": "Poe Power Sources for Electronic Safety and Security",
    "level": 5
  },
  {
    "code": "28 05 07.23",
    "label": "Uninterruptible Power Supply",
    "level": 5
  },
  {
    "code": "28 05 07.25",
    "label": "Power Source Monitoring",
    "level": 5
  },
  {
    "code": "28 05 07.27",
    "label": "Power Source Monitoring Appliances",
    "level": 5
  },
  {
    "code": "28 05 07.29",
    "label": "Power Source Monitoring Software",
    "level": 5
  },
  {
    "code": "28 05 09",
    "label": "Surge Protection for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 09.11",
    "label": "Surge Protection for Access Control",
    "level": 5
  },
  {
    "code": "28 05 09.13",
    "label": "Surge Protection for Video Surveillance",
    "level": 5
  },
  {
    "code": "28 05 09.15",
    "label": "Surge Protection for Intrusion Detection",
    "level": 5
  },
  {
    "code": "28 05 09.17",
    "label": "Surge Protection for Fire Detection and Alarm",
    "level": 5
  },
  {
    "code": "28 05 11",
    "label": "Cyber Security Requirements for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 13",
    "label": "Servers, Workstations and Storage for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 13.11",
    "label": "General Requirements for Servers, Workstations and Storage",
    "level": 5
  },
  {
    "code": "28 05 15",
    "label": "Servers for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 17",
    "label": "Workstations for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 19",
    "label": "Storage Appliances for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 19.11",
    "label": "Digital Video Recorders",
    "level": 5
  },
  {
    "code": "28 05 19.13",
    "label": "Hybrid Digital Video Recorders",
    "level": 5
  },
  {
    "code": "28 05 19.15",
    "label": "Network Video Recorders",
    "level": 5
  },
  {
    "code": "28 05 21",
    "label": "Network Attached Storage for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 23",
    "label": "Storage Area Network for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 25",
    "label": "Cloud Based Storage for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 27",
    "label": "Archival Systems for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 27.11",
    "label": "Digital Tape Storage",
    "level": 5
  },
  {
    "code": "28 05 27.13",
    "label": "Storage Media",
    "level": 5
  },
  {
    "code": "28 05 29",
    "label": "Storage Management Software for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 31",
    "label": "Communications Equipment for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 33",
    "label": "Safety and Security Network Communications Equipment",
    "level": 4
  },
  {
    "code": "28 05 33.11",
    "label": "Security Data Communications Firewalls",
    "level": 5
  },
  {
    "code": "28 05 33.13",
    "label": "Security Data Communications Routers",
    "level": 5
  },
  {
    "code": "28 05 33.15",
    "label": "Security Data Communications Power-Over-Ethernet Switches",
    "level": 5
  },
  {
    "code": "28 05 33.17",
    "label": "Security Data Communications Non-Power-Over-Ethernet Switches",
    "level": 5
  },
  {
    "code": "28 05 33.19",
    "label": "Security Data Communications Media Converters",
    "level": 5
  },
  {
    "code": "28 05 35",
    "label": "Security Data Communications Wireless Transmission Equipment",
    "level": 4
  },
  {
    "code": "28 05 35.11",
    "label": "Microwave Transmission Equipment",
    "level": 5
  },
  {
    "code": "28 05 37",
    "label": "Security Voice Communications -Distributed Antenna System",
    "level": 4
  },
  {
    "code": "28 05 37.11",
    "label": "Bi-Directional Amplifiers",
    "level": 5
  },
  {
    "code": "28 05 37.13",
    "label": "Repeaters",
    "level": 5
  },
  {
    "code": "28 05 37.15",
    "label": "Remote Repeaters",
    "level": 5
  },
  {
    "code": "28 05 39",
    "label": "Antennas",
    "level": 4
  },
  {
    "code": "28 05 39.11",
    "label": "Donor Antennas",
    "level": 5
  },
  {
    "code": "28 05 39.13",
    "label": "Multi-Band Antennas",
    "level": 5
  },
  {
    "code": "28 05 39.15",
    "label": "Band Specific Antennas",
    "level": 5
  },
  {
    "code": "28 05 39.17",
    "label": "Radiating Coaxial Cable",
    "level": 5
  },
  {
    "code": "28 05 39.19",
    "label": "Other Antennas",
    "level": 5
  },
  {
    "code": "28 05 41",
    "label": "Signal Controllers",
    "level": 4
  },
  {
    "code": "28 05 41.11",
    "label": "Splitters",
    "level": 5
  },
  {
    "code": "28 05 41.13",
    "label": "Directional Couplers",
    "level": 5
  },
  {
    "code": "28 05 43",
    "label": "Security Voice Communications Private Mobile Radio System",
    "level": 4
  },
  {
    "code": "28 05 43.11",
    "label": "Base Station",
    "level": 5
  },
  {
    "code": "28 05 43.13",
    "label": "Handheld Radio",
    "level": 5
  },
  {
    "code": "28 05 45",
    "label": "Systems Integration and Interconnection Requirements",
    "level": 4
  },
  {
    "code": "28 05 45.11",
    "label": "Mechanical",
    "level": 5
  },
  {
    "code": "28 05 45.13",
    "label": "Electrical",
    "level": 5
  },
  {
    "code": "28 05 45.15",
    "label": "Information",
    "level": 5
  },
  {
    "code": "28 05 48",
    "label": "Vibration and Seismic Controls for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 05 53",
    "label": "Identification for Electronic Safety and Security",
    "level": 4
  },
  {
    "code": "28 06 00",
    "label": "Schedules for Electronic Safety and Security",
    "level": 3
  },
  {
    "code": "28 06 10",
    "label": "Schedules for Access Control",
    "level": 4
  },
  {
    "code": "28 06 20",
    "label": "Schedules for Video Surveillance",
    "level": 4
  },
  {
    "code": "28 06 30",
    "label": "Schedules for Security Detection, Alarm, and Monitoring",
    "level": 4
  },
  {
    "code": "28 06 40",
    "label": "Schedules for Detention Monitoring and Control",
    "level": 4
  },
  {
    "code": "28 06 50",
    "label": "Schedules for Information Management and Display",
    "level": 4
  },
  {
    "code": "28 06 60",
    "label": "Schedules for Mass Notification",
    "level": 4
  },
  {
    "code": "28 06 70",
    "label": "Schedules for Life Safety",
    "level": 4
  },
  {
    "code": "28 06 80",
    "label": "Schedules for Fire Detection and Alarm",
    "level": 4
  },
  {
    "code": "28 08 00",
    "label": "Commissioning of Electronic Safety and Security",
    "level": 3
  },
  {
    "code": "28 08 11",
    "label": "Testing for Baseline Performance Criteria",
    "level": 4
  },
  {
    "code": "28 10 00",
    "label": "Access Control",
    "level": 2
  },
  {
    "code": "28 11 00",
    "label": "Access Control Global Applications",
    "level": 3
  },
  {
    "code": "28 12 01",
    "label": "General Requirements for Access Control Systems",
    "level": 4
  },
  {
    "code": "28 13 00",
    "label": "Access Control Software and Database Management",
    "level": 3
  },
  {
    "code": "28 13 11",
    "label": "Access Control Software",
    "level": 4
  },
  {
    "code": "28 13 11.11",
    "label": "Access Control Operating Systems",
    "level": 5
  },
  {
    "code": "28 13 11.13",
    "label": "Access Control Application Services",
    "level": 5
  },
  {
    "code": "28 13 11.15",
    "label": "Access Control Mobile Applications",
    "level": 5
  },
  {
    "code": "28 13 13",
    "label": "Access Control Software Interfaces",
    "level": 4
  },
  {
    "code": "28 14 00",
    "label": "Access Control System Hardware",
    "level": 3
  },
  {
    "code": "28 14 11",
    "label": "Access Control Network Controllers",
    "level": 4
  },
  {
    "code": "28 14 13",
    "label": "Access Control Door Controllers",
    "level": 4
  },
  {
    "code": "28 14 15",
    "label": "Access Control Inputs and Outputs",
    "level": 4
  },
  {
    "code": "28 14 17",
    "label": "Access Control Printers and Encoders",
    "level": 4
  },
  {
    "code": "28 14 19",
    "label": "Access Control Enclosures",
    "level": 4
  },
  {
    "code": "28 15 00",
    "label": "Access Control Hardware Devices",
    "level": 3
  },
  {
    "code": "28 15 11",
    "label": "Integrated Credential Readers and Field Entry Management",
    "level": 4
  },
  {
    "code": "28 15 11.11",
    "label": "Standard Card Readers",
    "level": 5
  },
  {
    "code": "28 15 11.13",
    "label": "Keypads",
    "level": 5
  },
  {
    "code": "28 15 11.15",
    "label": "Biometric Identity Devices",
    "level": 5
  },
  {
    "code": "28 15 11.17",
    "label": "Combination Reader Devices",
    "level": 5
  },
  {
    "code": "28 15 13",
    "label": "Access Control Credentials",
    "level": 4
  },
  {
    "code": "28 15 13.11",
    "label": "Access Control Cards",
    "level": 5
  },
  {
    "code": "28 15 13.13",
    "label": "Wireless Key Fobs",
    "level": 5
  },
  {
    "code": "28 15 15",
    "label": "Electrified Locking Devices & Accessories",
    "level": 4
  },
  {
    "code": "28 15 15.11",
    "label": "Direct Interface Integrated Locking Devices",
    "level": 5
  },
  {
    "code": "28 15 15.13",
    "label": "Wireless Integrated Locking Devices",
    "level": 5
  },
  {
    "code": "28 15 15.15",
    "label": "Intelligent Ethernet Integrated Locking Devices",
    "level": 5
  },
  {
    "code": "28 15 15.17",
    "label": "Status Monitoring and Egress Devices",
    "level": 5
  },
  {
    "code": "28 15 17",
    "label": "Egress Management Devices",
    "level": 4
  },
  {
    "code": "28 15 17.11",
    "label": "Magnetic Lock Delayed Egress Devices",
    "level": 5
  },
  {
    "code": "28 15 17.13",
    "label": "Panic Hardware Delayed Egress Devices",
    "level": 5
  },
  {
    "code": "28 15 19",
    "label": "Access Control Remote Devices",
    "level": 4
  },
  {
    "code": "28 15 19.11",
    "label": "Smart Phone Interface Requirements",
    "level": 5
  },
  {
    "code": "28 15 19.13",
    "label": "Wireless Access Control Devices",
    "level": 5
  },
  {
    "code": "28 15 21",
    "label": "Telephone Entry Systems",
    "level": 4
  },
  {
    "code": "28 15 23",
    "label": "Intercom Entry Systems",
    "level": 4
  },
  {
    "code": "28 15 23.11",
    "label": "Audio Intercom (Analog)",
    "level": 5
  },
  {
    "code": "28 15 23.13",
    "label": "Audio Video Intercom (Analog)",
    "level": 5
  },
  {
    "code": "28 15 23.15",
    "label": "Audio Intercom (IP)",
    "level": 5
  },
  {
    "code": "28 15 23.17",
    "label": "Audio Video Intercom (IP)",
    "level": 5
  },
  {
    "code": "28 15 25",
    "label": "Electronic Key Management Systems",
    "level": 4
  },
  {
    "code": "28 15 27",
    "label": "Access Control Electronic Turnstiles & Mobility Systems",
    "level": 4
  },
  {
    "code": "28 16 00",
    "label": "Access Control Interfaces",
    "level": 3
  },
  {
    "code": "28 16 11",
    "label": "Access Control Interfaces to Access Control Hardware",
    "level": 4
  },
  {
    "code": "28 16 13",
    "label": "Access Control Interfaces to Intrusion Detection",
    "level": 4
  },
  {
    "code": "28 16 15",
    "label": "Access Control Interfaces to Video Surveillance",
    "level": 4
  },
  {
    "code": "28 16 17",
    "label": "Access Control Interfaces to Fire Alarm",
    "level": 4
  },
  {
    "code": "28 16 19",
    "label": "Access Control Interfaces to Enterprise Software",
    "level": 4
  },
  {
    "code": "28 16 21",
    "label": "Access Control Interfaces to Mechanical Systems",
    "level": 4
  },
  {
    "code": "28 16 23",
    "label": "Access Control Interfaces to Electrical Systems",
    "level": 4
  },
  {
    "code": "28 16 25",
    "label": "Access Control Interfaces to Electronic Key Management System",
    "level": 4
  },
  {
    "code": "28 16 27",
    "label": "Access Control Interfaces to Elevator Controls",
    "level": 4
  },
  {
    "code": "28 16 29",
    "label": "Access Control Interfaces to Parking Equipment",
    "level": 4
  },
  {
    "code": "28 16 31",
    "label": "Access Control Interfaces to Perimeter Security Systems",
    "level": 4
  },
  {
    "code": "28 17 00",
    "label": "Access Control Identification Management Systems",
    "level": 3
  },
  {
    "code": "28 17 11",
    "label": "Visitor Management Systems",
    "level": 4
  },
  {
    "code": "28 17 13",
    "label": "Self Check In and Kiosk Visitor Systems",
    "level": 4
  },
  {
    "code": "28 17 15",
    "label": "Contractor & Vendor Management Systems",
    "level": 4
  },
  {
    "code": "28 17 17",
    "label": "Mobile Access Identification Management Systems",
    "level": 4
  },
  {
    "code": "28 18 00",
    "label": "Security Access Detection Equipment",
    "level": 3
  },
  {
    "code": "28 18 11",
    "label": "Security Access Metal Detectors",
    "level": 4
  },
  {
    "code": "28 18 13",
    "label": "Security Access X-Ray Equipment",
    "level": 4
  },
  {
    "code": "28 18 15",
    "label": "Security Access Explosive Detection Equipment",
    "level": 4
  },
  {
    "code": "28 18 17",
    "label": "Security Access Sniffing Equipment",
    "level": 4
  },
  {
    "code": "28 19 00",
    "label": "Access Control Vehicle Identification Systems",
    "level": 3
  },
  {
    "code": "28 19 11",
    "label": "Loading Dock Access Management Systems",
    "level": 4
  },
  {
    "code": "28 19 13",
    "label": "Parking Garage Access Management Systems",
    "level": 4
  },
  {
    "code": "28 19 15",
    "label": "Perimeter Vehicle Access Management Systems",
    "level": 4
  },
  {
    "code": "28 20 00",
    "label": "Video Surveillance",
    "level": 2
  },
  {
    "code": "28 21 00",
    "label": "Surveillance Cameras",
    "level": 3
  },
  {
    "code": "28 21 11",
    "label": "Analog Camera",
    "level": 4
  },
  {
    "code": "28 21 13",
    "label": "IP Cameras",
    "level": 4
  },
  {
    "code": "28 21 13.11",
    "label": "Panoramic IP Cameras",
    "level": 5
  },
  {
    "code": "28 21 15",
    "label": "Specialty Cameras",
    "level": 4
  },
  {
    "code": "28 21 17",
    "label": "Camera Housings",
    "level": 4
  },
  {
    "code": "28 21 19",
    "label": "Camera Mounts",
    "level": 4
  },
  {
    "code": "28 21 21",
    "label": "Illuminators",
    "level": 4
  },
  {
    "code": "28 23 00",
    "label": "Video Management System",
    "level": 3
  },
  {
    "code": "28 23 11",
    "label": "Video Management System Analytics",
    "level": 4
  },
  {
    "code": "28 23 13",
    "label": "Video Management System Interfaces",
    "level": 4
  },
  {
    "code": "28 25 00",
    "label": "Video Surveillance Positioning Equipment",
    "level": 3
  },
  {
    "code": "28 27 00",
    "label": "Video Surveillance Sensors",
    "level": 3
  },
  {
    "code": "28 30 00",
    "label": "Security Detection, Alarm, and Monitoring",
    "level": 2
  },
  {
    "code": "28 31 00",
    "label": "Intrusion Detection",
    "level": 3
  },
  {
    "code": "28 31 11",
    "label": "Building Intrusion Detection",
    "level": 4
  },
  {
    "code": "28 31 11.11",
    "label": "Building Intrusion Detection Control, Gui, and Logic Systems",
    "level": 5
  },
  {
    "code": "28 31 11.13",
    "label": "Building Intrusion Detection Remote Devices and Sensors",
    "level": 5
  },
  {
    "code": "28 31 21",
    "label": "Area and Perimeter Intrusion Detection",
    "level": 4
  },
  {
    "code": "28 31 21.11",
    "label": "Fiber Optic Area and Perimeter Security Systems",
    "level": 5
  },
  {
    "code": "28 31 21.13",
    "label": "Microwave Area and Perimeter Security Systems",
    "level": 5
  },
  {
    "code": "28 31 21.15",
    "label": "Integrated Video Area and Perimeter Security Systems",
    "level": 5
  },
  {
    "code": "28 31 21.17",
    "label": "Fixed Optical Beam Area and Perimeter Security Systems",
    "level": 5
  },
  {
    "code": "28 31 21.19",
    "label": "Lidar Area and Perimeter Security Systems",
    "level": 5
  },
  {
    "code": "28 31 21.21",
    "label": "Coaxial Area and Perimeter Security Systems",
    "level": 5
  },
  {
    "code": "28 31 21.23",
    "label": "Area and Perimeter Intrusion Detection Devices and Sensors",
    "level": 5
  },
  {
    "code": "28 31 31",
    "label": "Intrusion Detection Interfaces",
    "level": 4
  },
  {
    "code": "28 31 31.11",
    "label": "Intrusion Detection Interfaces to Security Monitoring and Control",
    "level": 5
  },
  {
    "code": "28 31 31.13",
    "label": "Intrusion Detection Interfaces to Access Control System",
    "level": 5
  },
  {
    "code": "28 31 31.15",
    "label": "Intrusion Detection Interfaces to Video Surveillance",
    "level": 5
  },
  {
    "code": "28 31 31.17",
    "label": "Intrusion Detection Interfaces to Information Management and Presentation",
    "level": 5
  },
  {
    "code": "28 31 31.19",
    "label": "Intrusion Detection Interfaces to Mass Notification",
    "level": 5
  },
  {
    "code": "28 31 31.21",
    "label": "Intrusion Detection Interfaces to Life Safety",
    "level": 5
  },
  {
    "code": "28 31 31.23",
    "label": "Intrusion Detection Interfaces to Fire Alarm",
    "level": 5
  },
  {
    "code": "28 31 31.25",
    "label": "Intrusion Detection Interfaces to Temperature Controls",
    "level": 5
  },
  {
    "code": "28 33 00",
    "label": "Security Monitoring and Control",
    "level": 3
  },
  {
    "code": "28 33 11",
    "label": "Electronic Structural Monitoring Systems",
    "level": 4
  },
  {
    "code": "28 33 13",
    "label": "Security Operations and Monitoring Center",
    "level": 4
  },
  {
    "code": "28 33 15",
    "label": "Security Monitoring and Control Software",
    "level": 4
  },
  {
    "code": "28 33 17",
    "label": "Security Monitoring and Control Services",
    "level": 4
  },
  {
    "code": "28 35 00",
    "label": "Tracking Systems",
    "level": 3
  },
  {
    "code": "28 35 11",
    "label": "Asset Tracking Systems",
    "level": 4
  },
  {
    "code": "28 35 11.11",
    "label": "Rf Asset Tracking Systems",
    "level": 5
  },
  {
    "code": "28 35 11.13",
    "label": "GPS Asset Tracking Systems",
    "level": 5
  },
  {
    "code": "28 35 11.15",
    "label": "Cellular Asset Tracking Systems",
    "level": 5
  },
  {
    "code": "28 35 13",
    "label": "Personnel Tracking Systems",
    "level": 4
  },
  {
    "code": "28 35 13.11",
    "label": "Rf Personnel Tracking Systems",
    "level": 5
  },
  {
    "code": "28 35 13.13",
    "label": "GPS Personnel Tracking Systems",
    "level": 5
  },
  {
    "code": "28 35 13.15",
    "label": "Cellular Personnel Tracking Systems",
    "level": 5
  },
  {
    "code": "28 37 00",
    "label": "Audio Monitoring",
    "level": 3
  },
  {
    "code": "28 37 11",
    "label": "Audio Monitoring Devices",
    "level": 4
  },
  {
    "code": "28 40 00",
    "label": "Life Safety",
    "level": 2
  },
  {
    "code": "28 41 00",
    "label": "Radiation Detection and Alarm",
    "level": 3
  },
  {
    "code": "28 41 11",
    "label": "Radiation Detection and Alarm Control, Gui, and Logic Systems",
    "level": 4
  },
  {
    "code": "28 41 13",
    "label": "Radiation Detection and Alarm Integrated Audio Evacuation Systems",
    "level": 4
  },
  {
    "code": "28 41 15",
    "label": "Radiation Detection Sensors",
    "level": 4
  },
  {
    "code": "28 41 17",
    "label": "Radiation Dosimeters",
    "level": 4
  },
  {
    "code": "28 42 00",
    "label": "Gas Detection and Alarm",
    "level": 3
  },
  {
    "code": "28 42 11",
    "label": "Gas Detection and Alarm Control, Gui, and Logic Systems",
    "level": 4
  },
  {
    "code": "28 42 13",
    "label": "Gas Detection and Alarm Integrated Audio Evacuation Systems",
    "level": 4
  },
  {
    "code": "28 42 15",
    "label": "Gas Detection Sensors",
    "level": 4
  },
  {
    "code": "28 43 00",
    "label": "Fuel Oil Detection and Alarm",
    "level": 3
  },
  {
    "code": "28 43 11",
    "label": "Fuel Oil Detection and Alarm Control, Gui, and Logic Systems",
    "level": 4
  },
  {
    "code": "28 43 13",
    "label": "Fuel Oil Detection and Alarm Integrated Audio Evacuation Systems",
    "level": 4
  },
  {
    "code": "28 43 15",
    "label": "Fuel Oil Detection Sensors",
    "level": 4
  },
  {
    "code": "28 44 00",
    "label": "Refrigerant Detection and Alarm",
    "level": 3
  },
  {
    "code": "28 44 11",
    "label": "Refrigerant Detection and Alarm Control, Gui, and Logic Systems",
    "level": 4
  },
  {
    "code": "28 44 13",
    "label": "Refrigerant Detection and Alarm Integrated Audio Evacuation Systems",
    "level": 4
  },
  {
    "code": "28 44 15",
    "label": "Refrigerant Detection Sensors",
    "level": 4
  },
  {
    "code": "28 45 00",
    "label": "Water Detection and Alarm",
    "level": 3
  },
  {
    "code": "28 45 11",
    "label": "Water Detection and Alarm Control, Gui, and Logic Systems",
    "level": 4
  },
  {
    "code": "28 45 13",
    "label": "Water Detection Sensors",
    "level": 4
  },
  {
    "code": "28 45 15",
    "label": "Building Envelope Water Detection and Alarm",
    "level": 4
  },
  {
    "code": "28 46 00",
    "label": "Fire Detection and Alarm",
    "level": 3
  },
  {
    "code": "28 46 10",
    "label": "Detection and Initiation",
    "level": 4
  },
  {
    "code": "28 46 11",
    "label": "Fire Sensors and Detectors",
    "level": 4
  },
  {
    "code": "28 46 11.11",
    "label": "Linear Heat Detection Sensors",
    "level": 5
  },
  {
    "code": "28 46 11.13",
    "label": "Spot-Type Heat Detection Sensors",
    "level": 5
  },
  {
    "code": "28 46 11.15",
    "label": "Duct Smoke Detection Sensors",
    "level": 5
  },
  {
    "code": "28 46 11.17",
    "label": "Beam Smoke Detection Sensors",
    "level": 5
  },
  {
    "code": "28 46 11.19",
    "label": "Video Smoke Detection Sensors",
    "level": 5
  },
  {
    "code": "28 46 11.21",
    "label": "Carbon-Monoxide Detection Sensors",
    "level": 5
  },
  {
    "code": "28 46 11.23",
    "label": "Combination Sensors",
    "level": 5
  },
  {
    "code": "28 46 11.25",
    "label": "Air Sampling Systems",
    "level": 5
  },
  {
    "code": "28 46 11.27",
    "label": "Other Sensors",
    "level": 5
  },
  {
    "code": "28 46 12",
    "label": "Other Initiating Devices",
    "level": 4
  },
  {
    "code": "28 46 12.11",
    "label": "Fire Alarm Pull Stations",
    "level": 5
  },
  {
    "code": "28 46 12.13",
    "label": "Fire Alarm Level Detector Switches",
    "level": 5
  },
  {
    "code": "28 46 12.15",
    "label": "Fire Alarm Flow Switches",
    "level": 5
  },
  {
    "code": "28 46 12.17",
    "label": "Fire Alarm Pressure Sensors",
    "level": 5
  },
  {
    "code": "28 46 12.19",
    "label": "Sprinkler Supervisory Devices",
    "level": 5
  },
  {
    "code": "28 46 20",
    "label": "Fire Alarm",
    "level": 4
  },
  {
    "code": "28 46 21.11",
    "label": "Addressable Fire-Alarm Systems",
    "level": 5
  },
  {
    "code": "28 46 21.13",
    "label": "Conventional Fire-Alarm Systems",
    "level": 5
  },
  {
    "code": "28 46 21.15",
    "label": "Protected Premise Systems",
    "level": 5
  },
  {
    "code": "28 46 21.17",
    "label": "Proprietary Systems",
    "level": 5
  },
  {
    "code": "28 46 21.19",
    "label": "Central Station Systems",
    "level": 5
  },
  {
    "code": "28 46 21.21",
    "label": "Remote Station Systems",
    "level": 5
  },
  {
    "code": "28 46 21.23",
    "label": "Public Emergency Alarm Reporting Systems",
    "level": 5
  },
  {
    "code": "28 46 22",
    "label": "Network Command Centers, Printers and Peripherals for Fire Systems",
    "level": 4
  },
  {
    "code": "28 46 23",
    "label": "Fire Alarm Notification Appliances",
    "level": 4
  },
  {
    "code": "28 46 23.11",
    "label": "Fire Alarm Horns and Strobes",
    "level": 5
  },
  {
    "code": "28 46 23.13",
    "label": "Fire Alarm Speakers",
    "level": 5
  },
  {
    "code": "28 46 23.15",
    "label": "Fire Alarm Low Frequency Sounders",
    "level": 5
  },
  {
    "code": "28 46 23.17",
    "label": "Wide Band Sounders",
    "level": 5
  },
  {
    "code": "28 46 24",
    "label": "Fire Detection and Alarm Emergency Control Function Interfaces",
    "level": 4
  },
  {
    "code": "28 46 24.11",
    "label": "Fire Detection and Alarm Interfaces to Remote Monitoring",
    "level": 5
  },
  {
    "code": "28 46 24.13",
    "label": "Fire Detection and Alarm Interfaces to Access Control Hardware",
    "level": 5
  },
  {
    "code": "28 46 24.15",
    "label": "Fire Detection and Alarm Interfaces to Access Control System",
    "level": 5
  },
  {
    "code": "28 46 24.17",
    "label": "Fire Detection and Alarm Interfaces to Intrusion Detection",
    "level": 5
  },
  {
    "code": "28 46 24.19",
    "label": "Fire Detection and Alarm Interfaces to Video Surveillance",
    "level": 5
  },
  {
    "code": "28 46 24.21",
    "label": "Fire Detection and Alarm Interfaces to Elevator Control",
    "level": 5
  },
  {
    "code": "28 46 24.23",
    "label": "Other Fire Detection and Alarm Interfaces",
    "level": 5
  },
  {
    "code": "28 47 00",
    "label": "Mass Notification",
    "level": 3
  },
  {
    "code": "28 47 11",
    "label": "General Requirements for Mass Notification",
    "level": 4
  },
  {
    "code": "28 47 13",
    "label": "Mass Notification Software",
    "level": 4
  },
  {
    "code": "28 47 15",
    "label": "Mass Notification Control Panels",
    "level": 4
  },
  {
    "code": "28 47 17",
    "label": "Notification Devices and Methods",
    "level": 4
  },
  {
    "code": "28 47 17.11",
    "label": "Notification Appliances and Methods Indoors",
    "level": 5
  },
  {
    "code": "28 47 17.13",
    "label": "Notification Appliances and Methods Outdoors",
    "level": 5
  },
  {
    "code": "28 47 17.15",
    "label": "Notification Appliances and Methods Distributed Recipient",
    "level": 5
  },
  {
    "code": "28 47 17.17",
    "label": "Notification Appliances and Methods Public Methods",
    "level": 5
  },
  {
    "code": "28 47 21",
    "label": "Mass Notification System Interfaces",
    "level": 4
  },
  {
    "code": "28 47 21.11",
    "label": "Notification Interfaces to Access Control Systems",
    "level": 5
  },
  {
    "code": "28 47 21.13",
    "label": "Notification Interfaces to Video Surveillance Systems",
    "level": 5
  },
  {
    "code": "28 47 21.15",
    "label": "Notification Interfaces to Security Detection, Alarm, and Monitoring",
    "level": 5
  },
  {
    "code": "28 47 21.17",
    "label": "Notification Interfaces to Security Monitoring and Control",
    "level": 5
  },
  {
    "code": "28 47 21.19",
    "label": "Notification Interfaces to Life Safety Systems",
    "level": 5
  },
  {
    "code": "28 47 21.21",
    "label": "Notification Interfaces to Fire Detection and Alarm",
    "level": 5
  },
  {
    "code": "28 47 21.23",
    "label": "Notification Interfaces to Detention Systems",
    "level": 5
  },
  {
    "code": "28 47 21.25",
    "label": "Notification Interfaces to Emergency Response Systems",
    "level": 5
  },
  {
    "code": "28 47 21.27",
    "label": "Notification Interfaces to Network and Facilities Monitoring",
    "level": 5
  },
  {
    "code": "28 47 21.29",
    "label": "Notification Interfaces to Web Intelligence",
    "level": 5
  },
  {
    "code": "28 47 21.31",
    "label": "Notification Interfaces to Traffic Management and Monitoring Systems",
    "level": 5
  },
  {
    "code": "28 47 21.33",
    "label": "Notification Interfaces to Smart Phones",
    "level": 5
  },
  {
    "code": "28 47 21.35",
    "label": "Notification Interfaces to Other External Subsystems",
    "level": 5
  },
  {
    "code": "28 48 00",
    "label": "Emergency Response Systems",
    "level": 3
  },
  {
    "code": "28 48 23",
    "label": "Computer Aided Dispatch",
    "level": 4
  },
  {
    "code": "28 49 00",
    "label": "Electronic Personal Protection Systems",
    "level": 3
  },
  {
    "code": "28 49 11",
    "label": "Electronic Personal Safety Detection Systems",
    "level": 4
  },
  {
    "code": "28 49 13",
    "label": "Electronic Personal Safety Alarm Annunciation and Control Systems",
    "level": 4
  },
  {
    "code": "28 49 15",
    "label": "Electronic Personal Safety Interfaces to Remote Monitoring",
    "level": 4
  },
  {
    "code": "28 49 17",
    "label": "Electronic Personal Safety Emergency Aid Devices",
    "level": 4
  },
  {
    "code": "28 50 00",
    "label": "Specialized Systems",
    "level": 2
  },
  {
    "code": "28 51 00",
    "label": "Information Management & Presentation",
    "level": 3
  },
  {
    "code": "28 51 11",
    "label": "Information Management & Presentation Architecture",
    "level": 4
  },
  {
    "code": "28 51 13",
    "label": "Data and Information Management",
    "level": 4
  },
  {
    "code": "28 51 15",
    "label": "Information Interfaces to Connected Subsystems",
    "level": 4
  },
  {
    "code": "28 51 15.11",
    "label": "Information Interfaces to Access Control Systems",
    "level": 5
  },
  {
    "code": "28 51 15.13",
    "label": "Information Interfaces to Video Surveillance Systems",
    "level": 5
  },
  {
    "code": "28 51 15.15",
    "label": "Information Interfaces to Security Detection, Alarm, and Monitoring",
    "level": 5
  },
  {
    "code": "28 51 15.17",
    "label": "Information Interfaces to Security Monitoring and Control",
    "level": 5
  },
  {
    "code": "28 51 15.19",
    "label": "Information Interfaces to Mass Notification Systems",
    "level": 5
  },
  {
    "code": "28 51 15.21",
    "label": "Information Interfaces to Life Safety Systems",
    "level": 5
  },
  {
    "code": "28 51 15.23",
    "label": "Information Interfaces to Fire Detection and Alarm",
    "level": 5
  },
  {
    "code": "28 51 15.25",
    "label": "Information Interfaces to Detention Systems",
    "level": 5
  },
  {
    "code": "28 51 15.27",
    "label": "Information Interfaces to Emergency Response Systems",
    "level": 5
  },
  {
    "code": "28 51 15.29",
    "label": "Information Interfaces to License Plate Recognition Systems",
    "level": 5
  },
  {
    "code": "28 51 15.31",
    "label": "Information Interfaces to Facial Recognition Systems",
    "level": 5
  },
  {
    "code": "28 51 15.33",
    "label": "Information Interfaces to Remote Data Structures",
    "level": 5
  },
  {
    "code": "28 51 15.35",
    "label": "Information Interfaces to Network and Facilities Monitoring",
    "level": 5
  },
  {
    "code": "28 51 15.37",
    "label": "Information Interfaces to Crowd Sourcing",
    "level": 5
  },
  {
    "code": "28 51 15.39",
    "label": "Information Interfaces to Web Intelligence",
    "level": 5
  },
  {
    "code": "28 51 15.41",
    "label": "Information Interfaces to Traffic Management and Monitoring Systems",
    "level": 5
  },
  {
    "code": "28 51 15.43",
    "label": "Information Interfaces to Environmental Monitoring Systems",
    "level": 5
  },
  {
    "code": "28 51 15.45",
    "label": "Information Interfaces to Directly Connected Sensors",
    "level": 5
  },
  {
    "code": "28 51 15.47",
    "label": "Information Interfaces to Other Safety and Security Subsystems",
    "level": 5
  },
  {
    "code": "28 51 15.49",
    "label": "Information Interfaces to Other External Subsystems",
    "level": 5
  },
  {
    "code": "28 51 17",
    "label": "Data Presentation",
    "level": 4
  },
  {
    "code": "28 51 17.11",
    "label": "Maps",
    "level": 5
  },
  {
    "code": "28 51 17.13",
    "label": "Visualization",
    "level": 5
  },
  {
    "code": "28 51 17.15",
    "label": "Events/Alarms/Incidents",
    "level": 5
  },
  {
    "code": "28 51 17.17",
    "label": "Video Workspace",
    "level": 5
  },
  {
    "code": "28 51 17.19",
    "label": "Dispatch/Notification",
    "level": 5
  },
  {
    "code": "28 51 17.21",
    "label": "Review and Investigation",
    "level": 5
  },
  {
    "code": "28 51 17.23",
    "label": "Reporting",
    "level": 5
  },
  {
    "code": "28 51 19",
    "label": "Control Room and Monitoring Equipment",
    "level": 4
  },
  {
    "code": "28 51 19.11",
    "label": "Display/Workstations",
    "level": 5
  },
  {
    "code": "28 51 19.13",
    "label": "Video Walls",
    "level": 5
  },
  {
    "code": "28 51 19.15",
    "label": "Audio Equipment",
    "level": 5
  },
  {
    "code": "28 51 19.17",
    "label": "Remote Displays",
    "level": 5
  },
  {
    "code": "28 52 00",
    "label": "Detention Security Systems",
    "level": 3
  },
  {
    "code": "28 52 11",
    "label": "Detention Monitoring and Control Systems",
    "level": 4
  },
  {
    "code": "28 52 13",
    "label": "Detention Interfaces to Connected Subsystems",
    "level": 4
  },
  {
    "code": "28 52 13.11",
    "label": "Detention Interfaces to Access Control Systems",
    "level": 5
  },
  {
    "code": "28 52 13.13",
    "label": "Detention Interfaces to Video Surveillance Systems",
    "level": 5
  },
  {
    "code": "28 52 13.15",
    "label": "Detention Interfaces to Security Detention, Alarm, and Monitoring",
    "level": 5
  },
  {
    "code": "28 52 13.17",
    "label": "Detention Interfaces to Security Monitoring and Control",
    "level": 5
  },
  {
    "code": "28 52 13.19",
    "label": "Detention Interfaces to Duress Alarm Systems",
    "level": 5
  },
  {
    "code": "28 52 13.21",
    "label": "Detention Interfaces to Distributed Television Systems",
    "level": 5
  },
  {
    "code": "28 52 13.23",
    "label": "Detention Interfaces to Perimeter Security Systems",
    "level": 5
  },
  {
    "code": "28 52 15",
    "label": "Video Support Systems for Detention",
    "level": 4
  },
  {
    "code": "28 52 15.11",
    "label": "Video Interrogation System",
    "level": 5
  },
  {
    "code": "28 52 15.13",
    "label": "Video Arraignment System",
    "level": 5
  },
  {
    "code": "28 52 15.15",
    "label": "Video Visitation System",
    "level": 5
  },
  {
    "code": "31 00 00",
    "label": "Earthwork",
    "level": 1
  },
  {
    "code": "31 01 00",
    "label": "Maintenance of Earthwork",
    "level": 3
  },
  {
    "code": "31 01 10",
    "label": "Maintenance of Clearing",
    "level": 4
  },
  {
    "code": "31 01 20",
    "label": "Maintenance of Earth Moving",
    "level": 4
  },
  {
    "code": "31 01 40",
    "label": "Maintenance of Shoring and Underpinning",
    "level": 4
  },
  {
    "code": "31 01 50",
    "label": "Maintenance of Excavation Support and Protection",
    "level": 4
  },
  {
    "code": "31 01 60",
    "label": "Maintenance of Special Foundations and Load Bearing Elements",
    "level": 4
  },
  {
    "code": "31 01 62",
    "label": "Maintenance of Driven Piles",
    "level": 4
  },
  {
    "code": "31 01 62.61",
    "label": "Driven Pile Repairs",
    "level": 5
  },
  {
    "code": "31 01 63",
    "label": "Maintenance of Bored and Augered Piles",
    "level": 4
  },
  {
    "code": "31 01 63.61",
    "label": "Bored and Augered Pile Repairs",
    "level": 5
  },
  {
    "code": "31 01 70",
    "label": "Maintenance of Tunneling and Mining",
    "level": 4
  },
  {
    "code": "31 01 70.61",
    "label": "Tunnel Leak Repairs",
    "level": 5
  },
  {
    "code": "31 05 00",
    "label": "Common Work Results for Earthwork",
    "level": 3
  },
  {
    "code": "31 05 05",
    "label": "Selective Demolition for Earthwork",
    "level": 4
  },
  {
    "code": "31 05 13",
    "label": "Soils for Earthwork",
    "level": 4
  },
  {
    "code": "31 05 16",
    "label": "Aggregates for Earthwork",
    "level": 4
  },
  {
    "code": "31 05 19",
    "label": "Geosynthetics for Earthwork",
    "level": 4
  },
  {
    "code": "31 05 19.13",
    "label": "Geotextiles for Earthwork",
    "level": 5
  },
  {
    "code": "31 05 19.16",
    "label": "Geomembranes for Earthwork",
    "level": 5
  },
  {
    "code": "31 05 19.19",
    "label": "Geogrids for Earthwork",
    "level": 5
  },
  {
    "code": "31 05 19.23",
    "label": "Geosynthetic Clay Liners",
    "level": 5
  },
  {
    "code": "31 05 19.26",
    "label": "Geocomposites",
    "level": 5
  },
  {
    "code": "31 05 19.29",
    "label": "Geonets",
    "level": 5
  },
  {
    "code": "31 05 23",
    "label": "Cement and Concrete for Earthwork",
    "level": 4
  },
  {
    "code": "31 06 00",
    "label": "Schedules for Earthwork",
    "level": 3
  },
  {
    "code": "31 06 10",
    "label": "Schedules for Clearing",
    "level": 4
  },
  {
    "code": "31 06 20",
    "label": "Schedules for Earth Moving",
    "level": 4
  },
  {
    "code": "31 06 20.13",
    "label": "Trench Dimension Schedule",
    "level": 5
  },
  {
    "code": "31 06 20.16",
    "label": "Backfill Material Schedule",
    "level": 5
  },
  {
    "code": "31 06 40",
    "label": "Schedules for Shoring and Underpinning",
    "level": 4
  },
  {
    "code": "31 06 50",
    "label": "Schedules for Excavation Support and Protection",
    "level": 4
  },
  {
    "code": "31 06 60",
    "label": "Schedules for Special Foundations and Load Bearing Elements",
    "level": 4
  },
  {
    "code": "31 06 60.13",
    "label": "Driven Pile Schedule",
    "level": 5
  },
  {
    "code": "31 06 60.16",
    "label": "Caisson Schedule",
    "level": 5
  },
  {
    "code": "31 06 70",
    "label": "Schedules for Tunneling and Mining",
    "level": 4
  },
  {
    "code": "31 08 00",
    "label": "Commissioning of Earthwork",
    "level": 3
  },
  {
    "code": "31 08 13",
    "label": "Pile Load Testing",
    "level": 4
  },
  {
    "code": "31 08 13.13",
    "label": "Dynamic Pile Load Testing",
    "level": 5
  },
  {
    "code": "31 08 13.16",
    "label": "Static Pile Load Testing",
    "level": 5
  },
  {
    "code": "31 09 00",
    "label": "Geotechnical Instrumentation and Monitoring of Earthwork",
    "level": 3
  },
  {
    "code": "31 09 13",
    "label": "Geotechnical Instrumentation and Monitoring",
    "level": 4
  },
  {
    "code": "31 09 13.13",
    "label": "Groundwater Monitoring During Construction",
    "level": 5
  },
  {
    "code": "31 09 16",
    "label": "Foundation Performance Instrumentation",
    "level": 4
  },
  {
    "code": "31 09 16.26",
    "label": "Bored and Augered Pile Load Tests",
    "level": 5
  },
  {
    "code": "31 10 00",
    "label": "Site Clearing",
    "level": 2
  },
  {
    "code": "31 11 00",
    "label": "Clearing and Grubbing",
    "level": 3
  },
  {
    "code": "31 12 00",
    "label": "Selective Clearing",
    "level": 3
  },
  {
    "code": "31 13 00",
    "label": "Selective Tree and Shrub Removal and Trimming",
    "level": 3
  },
  {
    "code": "31 13 13",
    "label": "Selective Tree and Shrub Removal",
    "level": 4
  },
  {
    "code": "31 13 16",
    "label": "Selective Tree and Shrub Trimming",
    "level": 4
  },
  {
    "code": "31 14 00",
    "label": "Earth Stripping and Stockpiling",
    "level": 3
  },
  {
    "code": "31 14 13",
    "label": "Soil Stripping and Stockpiling",
    "level": 4
  },
  {
    "code": "31 14 13.13",
    "label": "Soil Stripping",
    "level": 5
  },
  {
    "code": "31 14 13.16",
    "label": "Soil Stockpiling",
    "level": 5
  },
  {
    "code": "31 14 13.23",
    "label": "Topsoil Stripping and Stockpiling",
    "level": 5
  },
  {
    "code": "31 14 16",
    "label": "Sod Stripping and Stockpiling",
    "level": 4
  },
  {
    "code": "31 14 16.13",
    "label": "Sod Stripping",
    "level": 5
  },
  {
    "code": "31 14 16.16",
    "label": "Sod Stockpiling",
    "level": 5
  },
  {
    "code": "31 20 00",
    "label": "Earth Moving",
    "level": 2
  },
  {
    "code": "31 21 00",
    "label": "Off-Gassing Mitigation",
    "level": 3
  },
  {
    "code": "31 21 13",
    "label": "Radon Mitigation",
    "level": 4
  },
  {
    "code": "31 21 13.13",
    "label": "Radon Venting",
    "level": 5
  },
  {
    "code": "31 21 16",
    "label": "Methane Mitigation",
    "level": 4
  },
  {
    "code": "31 21 16.13",
    "label": "Methane Venting",
    "level": 5
  },
  {
    "code": "31 22 00",
    "label": "Grading",
    "level": 3
  },
  {
    "code": "31 22 13",
    "label": "Rough Grading",
    "level": 4
  },
  {
    "code": "31 22 16",
    "label": "Fine Grading",
    "level": 4
  },
  {
    "code": "31 22 16.13",
    "label": "Roadway Subgrade Reshaping",
    "level": 5
  },
  {
    "code": "31 22 19",
    "label": "Finish Grading",
    "level": 4
  },
  {
    "code": "31 22 19.13",
    "label": "Spreading and Grading Topsoil",
    "level": 5
  },
  {
    "code": "31 23 00",
    "label": "Excavation and Fill",
    "level": 3
  },
  {
    "code": "31 23 13",
    "label": "Subgrade Preparation",
    "level": 4
  },
  {
    "code": "31 23 16",
    "label": "Excavation",
    "level": 4
  },
  {
    "code": "31 23 16.13",
    "label": "Trenching",
    "level": 5
  },
  {
    "code": "31 23 16.16",
    "label": "Structural Excavation for Minor Structures",
    "level": 5
  },
  {
    "code": "31 23 16.26",
    "label": "Rock Removal",
    "level": 5
  },
  {
    "code": "31 23 19",
    "label": "Dewatering",
    "level": 4
  },
  {
    "code": "31 23 23",
    "label": "Fill",
    "level": 4
  },
  {
    "code": "31 23 23.13",
    "label": "Backfill",
    "level": 5
  },
  {
    "code": "31 23 23.23",
    "label": "Compaction",
    "level": 5
  },
  {
    "code": "31 23 23.33",
    "label": "Flowable Fill",
    "level": 5
  },
  {
    "code": "31 23 23.43",
    "label": "Geofoam",
    "level": 5
  },
  {
    "code": "31 23 33",
    "label": "Trenching and Backfilling",
    "level": 4
  },
  {
    "code": "31 24 00",
    "label": "Embankments",
    "level": 3
  },
  {
    "code": "31 24 13",
    "label": "Roadway Embankments",
    "level": 4
  },
  {
    "code": "31 24 16",
    "label": "Railway Embankments",
    "level": 4
  },
  {
    "code": "31 25 00",
    "label": "Erosion and Sedimentation Controls",
    "level": 3
  },
  {
    "code": "31 25 14",
    "label": "Stabilization Measures for Erosion and Sedimentation Control",
    "level": 4
  },
  {
    "code": "31 25 14.13",
    "label": "Hydraulically-Applied Erosion Control",
    "level": 5
  },
  {
    "code": "31 25 14.16",
    "label": "Rolled Erosion Control Mats and Blankets",
    "level": 5
  },
  {
    "code": "31 25 24",
    "label": "Structural Measures for Erosion and Sedimentation Control",
    "level": 4
  },
  {
    "code": "31 25 24.13",
    "label": "Rock Barriers",
    "level": 5
  },
  {
    "code": "31 25 34",
    "label": "Retention Measures for Erosion and Sedimentation Controls",
    "level": 4
  },
  {
    "code": "31 25 34.13",
    "label": "Rock Basins",
    "level": 5
  },
  {
    "code": "31 30 00",
    "label": "Earthwork Methods",
    "level": 2
  },
  {
    "code": "31 31 00",
    "label": "Soil Treatment",
    "level": 3
  },
  {
    "code": "31 31 13",
    "label": "Rodent Control",
    "level": 4
  },
  {
    "code": "31 31 13.16",
    "label": "Rodent Control Bait Systems",
    "level": 5
  },
  {
    "code": "31 31 13.19",
    "label": "Rodent Control Traps",
    "level": 5
  },
  {
    "code": "31 31 13.23",
    "label": "Rodent Control Electronic Systems",
    "level": 5
  },
  {
    "code": "31 31 13.26",
    "label": "Rodent Control Repellants",
    "level": 5
  },
  {
    "code": "31 31 16",
    "label": "Termite Control",
    "level": 4
  },
  {
    "code": "31 31 16.13",
    "label": "Chemical Termite Control",
    "level": 5
  },
  {
    "code": "31 31 16.16",
    "label": "Termite Control Bait Systems",
    "level": 5
  },
  {
    "code": "31 31 16.19",
    "label": "Termite Control Barriers",
    "level": 5
  },
  {
    "code": "31 31 19",
    "label": "Vegetation Control",
    "level": 4
  },
  {
    "code": "31 31 19.13",
    "label": "Chemical Vegetation Control",
    "level": 5
  },
  {
    "code": "31 31 33",
    "label": "Sanitary Vacuum System Piping",
    "level": 4
  },
  {
    "code": "31 32 00",
    "label": "Soil Stabilization",
    "level": 3
  },
  {
    "code": "31 32 13",
    "label": "Soil Mixing Stabilization",
    "level": 4
  },
  {
    "code": "31 32 13.13",
    "label": "Asphalt Soil Stabilization",
    "level": 5
  },
  {
    "code": "31 32 13.16",
    "label": "Cement Soil Stabilization",
    "level": 5
  },
  {
    "code": "31 32 13.19",
    "label": "Lime Soil Stabilization",
    "level": 5
  },
  {
    "code": "31 32 13.23",
    "label": "Fly-Ash Soil Stabilization",
    "level": 5
  },
  {
    "code": "31 32 13.26",
    "label": "Lime-Fly-Ash Soil Stabilization",
    "level": 5
  },
  {
    "code": "31 32 16",
    "label": "Chemical Treatment Soil Stabilization",
    "level": 4
  },
  {
    "code": "31 32 16.13",
    "label": "Polymer Emulsion Soil Stabilization",
    "level": 5
  },
  {
    "code": "31 32 17",
    "label": "Water Injection Soil Stabilization",
    "level": 4
  },
  {
    "code": "31 32 19",
    "label": "Geosynthetic Soil Stabilization and Layer Separation",
    "level": 4
  },
  {
    "code": "31 32 19.13",
    "label": "Geogrid Soil Stabilization",
    "level": 5
  },
  {
    "code": "31 32 19.16",
    "label": "Geotextile Soil Stabilization",
    "level": 5
  },
  {
    "code": "31 32 19.19",
    "label": "Geogrid Layer Separation",
    "level": 5
  },
  {
    "code": "31 32 19.23",
    "label": "Geotextile Layer Separation",
    "level": 5
  },
  {
    "code": "31 32 23",
    "label": "Pressure Grouting Soil Stabilization",
    "level": 4
  },
  {
    "code": "31 32 23.13",
    "label": "Cementitious Pressure Grouting Soil Stabilization",
    "level": 5
  },
  {
    "code": "31 32 23.16",
    "label": "Chemical Pressure Grouting Soil Stabilization",
    "level": 5
  },
  {
    "code": "31 32 33",
    "label": "Shotcrete Soil Slope Stabilization",
    "level": 4
  },
  {
    "code": "31 32 36",
    "label": "Soil Nailing",
    "level": 4
  },
  {
    "code": "31 32 36.13",
    "label": "Driven Soil Nailing",
    "level": 5
  },
  {
    "code": "31 32 36.16",
    "label": "Grouted Soil Nailing",
    "level": 5
  },
  {
    "code": "31 32 36.19",
    "label": "Corrosion-Protected Soil Nailing",
    "level": 5
  },
  {
    "code": "31 32 36.23",
    "label": "Jet-Grouted Soil Nailing",
    "level": 5
  },
  {
    "code": "31 32 36.26",
    "label": "Launched Soil Nailing",
    "level": 5
  },
  {
    "code": "31 33 00",
    "label": "Rock Stabilization",
    "level": 3
  },
  {
    "code": "31 33 13",
    "label": "Rock Bolting and Grouting",
    "level": 4
  },
  {
    "code": "31 33 23",
    "label": "Rock Slope Netting",
    "level": 4
  },
  {
    "code": "31 33 26",
    "label": "Rock Slope Wire Mesh",
    "level": 4
  },
  {
    "code": "31 33 33",
    "label": "Shotcrete Rock Slope Stabilization",
    "level": 4
  },
  {
    "code": "31 33 43",
    "label": "Vegetated Rock Slope Stabilization",
    "level": 4
  },
  {
    "code": "31 34 00",
    "label": "Soil Reinforcement",
    "level": 3
  },
  {
    "code": "31 34 19",
    "label": "Geosynthetic Soil Reinforcement",
    "level": 4
  },
  {
    "code": "31 34 19.13",
    "label": "Geogrid Soil Reinforcement",
    "level": 5
  },
  {
    "code": "31 34 19.16",
    "label": "Geotextile Soil Reinforcement",
    "level": 5
  },
  {
    "code": "31 34 23",
    "label": "Fiber Soil Reinforcement",
    "level": 4
  },
  {
    "code": "31 34 23.13",
    "label": "Geosynthetic Fiber Soil Reinforcement",
    "level": 5
  },
  {
    "code": "31 35 00",
    "label": "Slope Protection",
    "level": 3
  },
  {
    "code": "31 35 19",
    "label": "Geosynthetic Slope Protection",
    "level": 4
  },
  {
    "code": "31 35 19.13",
    "label": "Geogrid Slope Protection",
    "level": 5
  },
  {
    "code": "31 35 19.16",
    "label": "Geotextile Slope Protection",
    "level": 5
  },
  {
    "code": "31 35 19.19",
    "label": "Slope Protection with Mulch Control Netting",
    "level": 5
  },
  {
    "code": "31 35 23",
    "label": "Slope Protection with Slope Paving",
    "level": 4
  },
  {
    "code": "31 35 23.13",
    "label": "Cast-In-Place Concrete Slope Paving",
    "level": 5
  },
  {
    "code": "31 35 23.16",
    "label": "Precast Concrete Slope Paving",
    "level": 5
  },
  {
    "code": "31 35 23.19",
    "label": "Concrete Unit Masonry Slope Paving",
    "level": 5
  },
  {
    "code": "31 35 26",
    "label": "Containment Barriers",
    "level": 4
  },
  {
    "code": "31 35 26.13",
    "label": "Clay Containment Barriers",
    "level": 5
  },
  {
    "code": "31 35 26.16",
    "label": "Geomembrane Containment Barriers",
    "level": 5
  },
  {
    "code": "31 35 26.23",
    "label": "Bentonite Slurry Trench",
    "level": 5
  },
  {
    "code": "31 36 00",
    "label": "Gabions",
    "level": 3
  },
  {
    "code": "31 36 13",
    "label": "Gabion Boxes",
    "level": 4
  },
  {
    "code": "31 36 19",
    "label": "Gabion Mattresses",
    "level": 4
  },
  {
    "code": "31 36 19.13",
    "label": "Vegetated Gabion Mattresses",
    "level": 5
  },
  {
    "code": "31 37 00",
    "label": "Riprap",
    "level": 3
  },
  {
    "code": "31 37 13",
    "label": "Machined Riprap",
    "level": 4
  },
  {
    "code": "31 37 16",
    "label": "Non-Machined Riprap",
    "level": 4
  },
  {
    "code": "31 37 16.13",
    "label": "Rubble-Stone Riprap",
    "level": 5
  },
  {
    "code": "31 37 16.16",
    "label": "Concrete Unit Masonry Riprap",
    "level": 5
  },
  {
    "code": "31 37 16.19",
    "label": "Sacked Sand-Cement Riprap",
    "level": 5
  },
  {
    "code": "31 40 00",
    "label": "Shoring and Underpinning",
    "level": 2
  },
  {
    "code": "31 41 00",
    "label": "Shoring",
    "level": 3
  },
  {
    "code": "31 41 13",
    "label": "Timber Shoring",
    "level": 4
  },
  {
    "code": "31 41 16",
    "label": "Sheet Piling",
    "level": 4
  },
  {
    "code": "31 41 16.13",
    "label": "Steel Sheet Piling",
    "level": 5
  },
  {
    "code": "31 41 16.16",
    "label": "Plastic Sheet Piling",
    "level": 5
  },
  {
    "code": "31 41 19",
    "label": "Metal Hydraulic Shoring",
    "level": 4
  },
  {
    "code": "31 41 19.13",
    "label": "Aluminum Hydraulic Shoring",
    "level": 5
  },
  {
    "code": "31 41 23",
    "label": "Pneumatic Shoring",
    "level": 4
  },
  {
    "code": "31 41 33",
    "label": "Trench Shielding",
    "level": 4
  },
  {
    "code": "31 43 00",
    "label": "Concrete Raising",
    "level": 3
  },
  {
    "code": "31 43 13",
    "label": "Pressure Grouting",
    "level": 4
  },
  {
    "code": "31 43 13.13",
    "label": "Concrete Pressure Grouting",
    "level": 5
  },
  {
    "code": "31 43 13.16",
    "label": "Polyurethane Pressure Grouting",
    "level": 5
  },
  {
    "code": "31 43 16",
    "label": "Compaction Grouting",
    "level": 4
  },
  {
    "code": "31 43 19",
    "label": "Mechanical Jacking",
    "level": 4
  },
  {
    "code": "31 45 00",
    "label": "Vibroflotation and Densification",
    "level": 3
  },
  {
    "code": "31 45 13",
    "label": "Vibroflotation",
    "level": 4
  },
  {
    "code": "31 45 16",
    "label": "Densification",
    "level": 4
  },
  {
    "code": "31 46 00",
    "label": "Needle Beams",
    "level": 3
  },
  {
    "code": "31 46 13",
    "label": "Cantilever Needle Beams",
    "level": 4
  },
  {
    "code": "31 48 00",
    "label": "Underpinning",
    "level": 3
  },
  {
    "code": "31 48 13",
    "label": "Underpinning Piers",
    "level": 4
  },
  {
    "code": "31 48 19",
    "label": "Bracket Piers",
    "level": 4
  },
  {
    "code": "31 48 23",
    "label": "Jacked Piers",
    "level": 4
  },
  {
    "code": "31 48 33",
    "label": "Micropile Underpinning",
    "level": 4
  },
  {
    "code": "31 50 00",
    "label": "Excavation Support and Protection",
    "level": 2
  },
  {
    "code": "31 51 00",
    "label": "Anchor Tiebacks",
    "level": 3
  },
  {
    "code": "31 51 13",
    "label": "Excavation Soil Anchors",
    "level": 4
  },
  {
    "code": "31 51 16",
    "label": "Excavation Rock Anchors",
    "level": 4
  },
  {
    "code": "31 52 00",
    "label": "Cofferdams",
    "level": 3
  },
  {
    "code": "31 52 13",
    "label": "Sheet Piling Cofferdams",
    "level": 4
  },
  {
    "code": "31 52 16",
    "label": "Timber Cofferdams",
    "level": 4
  },
  {
    "code": "31 52 19",
    "label": "Precast Concrete Cofferdams",
    "level": 4
  },
  {
    "code": "31 53 00",
    "label": "Cribbing and Walers",
    "level": 3
  },
  {
    "code": "31 53 13",
    "label": "Timber Cribwork",
    "level": 4
  },
  {
    "code": "31 54 00",
    "label": "Ground Freezing",
    "level": 3
  },
  {
    "code": "31 56 00",
    "label": "Slurry Walls",
    "level": 3
  },
  {
    "code": "31 56 13",
    "label": "Bentonite Slurry Walls",
    "level": 4
  },
  {
    "code": "31 56 13.13",
    "label": "Soil-Bentonite Slurry Walls",
    "level": 5
  },
  {
    "code": "31 56 13.16",
    "label": "Cement-Bentonite Slurry Walls",
    "level": 5
  },
  {
    "code": "31 56 13.19",
    "label": "Slag-Cement-Bentonite Slurry Walls",
    "level": 5
  },
  {
    "code": "31 56 13.23",
    "label": "Soil-Cement-Bentonite Slurry Walls",
    "level": 5
  },
  {
    "code": "31 56 13.26",
    "label": "Pozzolan-Bentonite Slurry Walls",
    "level": 5
  },
  {
    "code": "31 56 13.29",
    "label": "Organically-Modified Bentonite Slurry Walls",
    "level": 5
  },
  {
    "code": "31 56 16",
    "label": "Attipulgite Slurry Walls",
    "level": 4
  },
  {
    "code": "31 56 16.13",
    "label": "Soil-Attipulgite Slurry Walls",
    "level": 5
  },
  {
    "code": "31 56 19",
    "label": "Slurry-Geomembrane Composite Slurry Walls",
    "level": 4
  },
  {
    "code": "31 56 23",
    "label": "Lean Concrete Slurry Walls",
    "level": 4
  },
  {
    "code": "31 56 26",
    "label": "Bio-Polymer Trench Drain",
    "level": 4
  },
  {
    "code": "31 60 00",
    "label": "Special Foundations and Load-Bearing Elements",
    "level": 2
  },
  {
    "code": "31 62 00",
    "label": "Driven Piles",
    "level": 3
  },
  {
    "code": "31 62 13",
    "label": "Concrete Piles",
    "level": 4
  },
  {
    "code": "31 62 13.13",
    "label": "Cast-in-Place Concrete Piles",
    "level": 5
  },
  {
    "code": "31 62 13.16",
    "label": "Concrete Displacement Piles",
    "level": 5
  },
  {
    "code": "31 62 13.19",
    "label": "Precast Concrete Piles",
    "level": 5
  },
  {
    "code": "31 62 13.23",
    "label": "Prestressed Concrete Piles",
    "level": 5
  },
  {
    "code": "31 62 13.26",
    "label": "Pressure-Injected Footings",
    "level": 5
  },
  {
    "code": "31 62 16",
    "label": "Steel Piles",
    "level": 4
  },
  {
    "code": "31 62 16.13",
    "label": "Sheet Steel Piles",
    "level": 5
  },
  {
    "code": "31 62 16.16",
    "label": "Steel H Piles",
    "level": 5
  },
  {
    "code": "31 62 16.19",
    "label": "Unfilled Tubular Steel Piles",
    "level": 5
  },
  {
    "code": "31 62 19",
    "label": "Timber Piles",
    "level": 4
  },
  {
    "code": "31 62 23",
    "label": "Composite Piles",
    "level": 4
  },
  {
    "code": "31 62 23.13",
    "label": "Concrete-Filled Steel Piles",
    "level": 5
  },
  {
    "code": "31 62 23.16",
    "label": "Wood and Cast-In-Place Concrete Piles",
    "level": 5
  },
  {
    "code": "31 63 00",
    "label": "Bored Piles",
    "level": 3
  },
  {
    "code": "31 63 13",
    "label": "Bored and Augered Test Piles",
    "level": 4
  },
  {
    "code": "31 63 16",
    "label": "Auger Cast Grout Piles",
    "level": 4
  },
  {
    "code": "31 63 19",
    "label": "Bored and Socketed Piles",
    "level": 4
  },
  {
    "code": "31 63 19.13",
    "label": "Rock Sockets for Piles",
    "level": 5
  },
  {
    "code": "31 63 23",
    "label": "Bored Concrete Piles",
    "level": 4
  },
  {
    "code": "31 63 23.13",
    "label": "Bored and Belled Concrete Piles",
    "level": 5
  },
  {
    "code": "31 63 23.16",
    "label": "Bored Friction Concrete Piles",
    "level": 5
  },
  {
    "code": "31 63 26",
    "label": "Drilled Caissons",
    "level": 4
  },
  {
    "code": "31 63 26.13",
    "label": "Fixed End Caisson Piles",
    "level": 5
  },
  {
    "code": "31 63 26.16",
    "label": "Concrete Caissons for Marine Construction",
    "level": 5
  },
  {
    "code": "31 63 29",
    "label": "Drilled Concrete Piers and Shafts",
    "level": 4
  },
  {
    "code": "31 63 29.13",
    "label": "Uncased Drilled Concrete Piers",
    "level": 5
  },
  {
    "code": "31 63 29.16",
    "label": "Cased Drilled Concrete Piers",
    "level": 5
  },
  {
    "code": "31 63 33",
    "label": "Drilled Micropiles",
    "level": 4
  },
  {
    "code": "31 64 00",
    "label": "Caissons",
    "level": 3
  },
  {
    "code": "31 64 13",
    "label": "Box Caissons",
    "level": 4
  },
  {
    "code": "31 64 16",
    "label": "Excavated Caissons",
    "level": 4
  },
  {
    "code": "31 64 19",
    "label": "Floating Caissons",
    "level": 4
  },
  {
    "code": "31 64 23",
    "label": "Open Caissons",
    "level": 4
  },
  {
    "code": "31 64 26",
    "label": "Pneumatic Caissons",
    "level": 4
  },
  {
    "code": "31 64 29",
    "label": "Sheeted Caissons",
    "level": 4
  },
  {
    "code": "31 66 00",
    "label": "Special Foundations",
    "level": 3
  },
  {
    "code": "31 66 13",
    "label": "Special Piles",
    "level": 4
  },
  {
    "code": "31 66 13.13",
    "label": "Rammed Aggregate Piles",
    "level": 5
  },
  {
    "code": "31 66 15",
    "label": "Helical Foundation Piles",
    "level": 4
  },
  {
    "code": "31 66 16",
    "label": "Special Foundation Walls",
    "level": 4
  },
  {
    "code": "31 66 16.13",
    "label": "Anchored Foundation Walls",
    "level": 5
  },
  {
    "code": "31 66 16.23",
    "label": "Concrete Cribbing Foundation Walls",
    "level": 5
  },
  {
    "code": "31 66 16.26",
    "label": "Metal Cribbing Foundation Walls",
    "level": 5
  },
  {
    "code": "31 66 16.33",
    "label": "Manufactured Modular Foundation Walls",
    "level": 5
  },
  {
    "code": "31 66 16.43",
    "label": "Mechanically Stabilized Earth Foundation Walls",
    "level": 5
  },
  {
    "code": "31 66 16.46",
    "label": "Slurry Diaphragm Foundation Walls",
    "level": 5
  },
  {
    "code": "31 66 16.53",
    "label": "Soldier-Beam Foundation Walls",
    "level": 5
  },
  {
    "code": "31 66 16.56",
    "label": "Permanently-Anchored Soldier-Beam Foundation Walls",
    "level": 5
  },
  {
    "code": "31 66 19",
    "label": "Refrigerated Foundations",
    "level": 4
  },
  {
    "code": "31 68 00",
    "label": "Foundation Anchors",
    "level": 3
  },
  {
    "code": "31 68 13",
    "label": "Rock Foundation Anchors",
    "level": 4
  },
  {
    "code": "31 68 16",
    "label": "Helical Foundation Anchors",
    "level": 4
  },
  {
    "code": "31 70 00",
    "label": "Tunneling and Mining",
    "level": 2
  },
  {
    "code": "31 71 00",
    "label": "Tunnel Excavation",
    "level": 3
  },
  {
    "code": "31 71 13",
    "label": "Shield Driving Tunnel Excavation",
    "level": 4
  },
  {
    "code": "31 71 16",
    "label": "Tunnel Excavation by Drilling and Blasting",
    "level": 4
  },
  {
    "code": "31 71 19",
    "label": "Tunnel Excavation by Tunnel Boring Machine",
    "level": 4
  },
  {
    "code": "31 71 23",
    "label": "Tunneling by Cut and Cover",
    "level": 4
  },
  {
    "code": "31 72 00",
    "label": "Tunnel Support Systems",
    "level": 3
  },
  {
    "code": "31 72 13",
    "label": "Rock Reinforcement and Initial Support",
    "level": 4
  },
  {
    "code": "31 72 16",
    "label": "Steel Ribs and Lagging",
    "level": 4
  },
  {
    "code": "31 73 00",
    "label": "Tunnel Grouting",
    "level": 3
  },
  {
    "code": "31 73 13",
    "label": "Cement Tunnel Grouting",
    "level": 4
  },
  {
    "code": "31 73 16",
    "label": "Chemical Tunnel Grouting",
    "level": 4
  },
  {
    "code": "31 74 00",
    "label": "Tunnel Construction",
    "level": 3
  },
  {
    "code": "31 74 13",
    "label": "Cast-in-Place Concrete Tunnel Lining",
    "level": 4
  },
  {
    "code": "31 74 16",
    "label": "Precast Concrete Tunnel Lining",
    "level": 4
  },
  {
    "code": "31 74 19",
    "label": "Shotcrete Tunnel Lining",
    "level": 4
  },
  {
    "code": "31 75 00",
    "label": "Shaft Construction",
    "level": 3
  },
  {
    "code": "31 75 13",
    "label": "Cast-in-Place Concrete Shaft Lining",
    "level": 4
  },
  {
    "code": "31 75 16",
    "label": "Precast Concrete Shaft Lining",
    "level": 4
  },
  {
    "code": "31 77 00",
    "label": "Submersible Tube Tunnels",
    "level": 3
  },
  {
    "code": "31 77 13",
    "label": "Trench Excavation for Submerged Tunnels",
    "level": 4
  },
  {
    "code": "31 77 16",
    "label": "Tube Construction (Outfitting Tunnel Tubes)",
    "level": 4
  },
  {
    "code": "31 77 19",
    "label": "Floating and Laying Submerged Tunnels",
    "level": 4
  },
  {
    "code": "32 00 00",
    "label": "Exterior Improvements",
    "level": 1
  },
  {
    "code": "32 01 00",
    "label": "Operation and Maintenance of Exterior Improvements",
    "level": 3
  },
  {
    "code": "32 01 11",
    "label": "Paving Cleaning",
    "level": 4
  },
  {
    "code": "32 01 11.51",
    "label": "Rubber and Paint Removal from Paving",
    "level": 5
  },
  {
    "code": "32 01 11.52",
    "label": "Rubber Removal from Paving",
    "level": 5
  },
  {
    "code": "32 01 11.53",
    "label": "Paint Removal from Paving",
    "level": 5
  },
  {
    "code": "32 01 13",
    "label": "Flexible Paving Surface Treatment",
    "level": 4
  },
  {
    "code": "32 01 13.61",
    "label": "Slurry Seal (Latex Modified)",
    "level": 5
  },
  {
    "code": "32 01 13.62",
    "label": "Asphalt Surface Treatment",
    "level": 5
  },
  {
    "code": "32 01 16",
    "label": "Flexible Paving Rehabilitation",
    "level": 4
  },
  {
    "code": "32 01 16.71",
    "label": "Cold Milling Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 01 16.72",
    "label": "Asphalt Paving Reuse",
    "level": 5
  },
  {
    "code": "32 01 16.73",
    "label": "In Place Cold Reused Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 01 16.74",
    "label": "In Place Hot Reused Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 01 16.75",
    "label": "Heater Scarifying of Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 01 17",
    "label": "Flexible Paving Repair",
    "level": 4
  },
  {
    "code": "32 01 17.61",
    "label": "Sealing Cracks in Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 01 17.62",
    "label": "Stress-Absorbing Membrane Interlayer",
    "level": 5
  },
  {
    "code": "32 01 19",
    "label": "Rigid Paving Surface Treatment",
    "level": 4
  },
  {
    "code": "32 01 19.61",
    "label": "Sealing of Joints in Rigid Paving",
    "level": 5
  },
  {
    "code": "32 01 19.62",
    "label": "Patching of Rigid Paving",
    "level": 5
  },
  {
    "code": "32 01 23",
    "label": "Base Course Reconditioning",
    "level": 4
  },
  {
    "code": "32 01 26",
    "label": "Rigid Paving Rehabilitation",
    "level": 4
  },
  {
    "code": "32 01 26.71",
    "label": "Grooving of Concrete Paving",
    "level": 5
  },
  {
    "code": "32 01 26.72",
    "label": "Grinding of Concrete Paving",
    "level": 5
  },
  {
    "code": "32 01 26.73",
    "label": "Milling of Concrete Paving",
    "level": 5
  },
  {
    "code": "32 01 26.74",
    "label": "Concrete Overlays",
    "level": 5
  },
  {
    "code": "32 01 26.75",
    "label": "Concrete Paving Reuse",
    "level": 5
  },
  {
    "code": "32 01 29",
    "label": "Rigid Paving Repair",
    "level": 4
  },
  {
    "code": "32 01 29.61",
    "label": "Partial Depth Patching of Rigid Paving",
    "level": 5
  },
  {
    "code": "32 01 29.62",
    "label": "Concrete Paving Raising",
    "level": 5
  },
  {
    "code": "32 01 29.63",
    "label": "Subsealing and Stabilization",
    "level": 5
  },
  {
    "code": "32 01 30",
    "label": "Operation and Maintenance of Site Improvements",
    "level": 4
  },
  {
    "code": "32 01 30.13",
    "label": "Snow Removal",
    "level": 5
  },
  {
    "code": "32 01 80",
    "label": "Operation and Maintenance of Irrigation",
    "level": 4
  },
  {
    "code": "32 01 90",
    "label": "Operation and Maintenance of Planting",
    "level": 4
  },
  {
    "code": "32 01 90.13",
    "label": "Fertilizing",
    "level": 5
  },
  {
    "code": "32 01 90.16",
    "label": "Amending Soils",
    "level": 5
  },
  {
    "code": "32 01 90.19",
    "label": "Mowing",
    "level": 5
  },
  {
    "code": "32 01 90.23",
    "label": "Pruning",
    "level": 5
  },
  {
    "code": "32 01 90.26",
    "label": "Watering",
    "level": 5
  },
  {
    "code": "32 01 90.29",
    "label": "Topsoil Preservation",
    "level": 5
  },
  {
    "code": "32 01 90.33",
    "label": "Tree and Shrub Preservation",
    "level": 5
  },
  {
    "code": "32 05 00",
    "label": "Common Work Results for Exterior Improvements",
    "level": 3
  },
  {
    "code": "32 05 05",
    "label": "Selective Demolition for Exterior Improvements",
    "level": 4
  },
  {
    "code": "32 05 13",
    "label": "Soils for Exterior Improvements",
    "level": 4
  },
  {
    "code": "32 05 16",
    "label": "Aggregates for Exterior Improvements",
    "level": 4
  },
  {
    "code": "32 05 19",
    "label": "Geosynthetics for Exterior Improvements",
    "level": 4
  },
  {
    "code": "32 05 19.13",
    "label": "Geotextiles for Exterior Improvements",
    "level": 5
  },
  {
    "code": "32 05 19.16",
    "label": "Geomembranes for Exterior Improvements",
    "level": 5
  },
  {
    "code": "32 05 19.19",
    "label": "Geogrids for Exterior Improvements",
    "level": 5
  },
  {
    "code": "32 05 23",
    "label": "Cement and Concrete for Exterior Improvements",
    "level": 4
  },
  {
    "code": "32 05 33",
    "label": "Common Work Results for Planting",
    "level": 4
  },
  {
    "code": "32 06 00",
    "label": "Schedules for Exterior Improvements",
    "level": 3
  },
  {
    "code": "32 06 10",
    "label": "Schedules for Bases, Ballasts, and Paving",
    "level": 4
  },
  {
    "code": "32 06 10.13",
    "label": "Pedestrian Walkway Schedule",
    "level": 5
  },
  {
    "code": "32 06 30",
    "label": "Schedules for Site Improvements",
    "level": 4
  },
  {
    "code": "32 06 30.13",
    "label": "Retaining Wall Schedule",
    "level": 5
  },
  {
    "code": "32 06 80",
    "label": "Schedules for Irrigation",
    "level": 4
  },
  {
    "code": "32 06 80.13",
    "label": "Irrigation Piping Schedule",
    "level": 5
  },
  {
    "code": "32 06 90",
    "label": "Schedules for Planting",
    "level": 4
  },
  {
    "code": "32 06 90.13",
    "label": "Planting Schedule",
    "level": 5
  },
  {
    "code": "32 08 00",
    "label": "Commissioning of Exterior Improvements",
    "level": 3
  },
  {
    "code": "32 10 00",
    "label": "Bases, Ballasts, and Paving",
    "level": 2
  },
  {
    "code": "32 11 00",
    "label": "Base Courses",
    "level": 3
  },
  {
    "code": "32 11 13",
    "label": "Subgrade Modifications",
    "level": 4
  },
  {
    "code": "32 11 13.13",
    "label": "Lime-Treated Subgrades",
    "level": 5
  },
  {
    "code": "32 11 13.16",
    "label": "Bituminous-Treated Subgrades",
    "level": 5
  },
  {
    "code": "32 11 16",
    "label": "Subbase Courses",
    "level": 4
  },
  {
    "code": "32 11 16.13",
    "label": "Sand-Clay Subbase Courses",
    "level": 5
  },
  {
    "code": "32 11 16.16",
    "label": "Aggregate Subbase Courses",
    "level": 5
  },
  {
    "code": "32 11 23",
    "label": "Aggregate Base Courses",
    "level": 4
  },
  {
    "code": "32 11 23.13",
    "label": "Sand-Clay Base Courses",
    "level": 5
  },
  {
    "code": "32 11 23.23",
    "label": "Base Course Drainage Layers",
    "level": 5
  },
  {
    "code": "32 11 26",
    "label": "Asphaltic Base Courses",
    "level": 4
  },
  {
    "code": "32 11 26.13",
    "label": "Plant Mix Asphaltic Base Courses",
    "level": 5
  },
  {
    "code": "32 11 26.16",
    "label": "Road Mix Asphaltic Base Courses",
    "level": 5
  },
  {
    "code": "32 11 26.19",
    "label": "Bituminous-Stabilized Base Courses",
    "level": 5
  },
  {
    "code": "32 11 29",
    "label": "Lime Treated Base Courses",
    "level": 4
  },
  {
    "code": "32 11 29.13",
    "label": "Lime-Fly Ash-Treated Base Courses",
    "level": 5
  },
  {
    "code": "32 11 33",
    "label": "Cement-Treated Base Courses",
    "level": 4
  },
  {
    "code": "32 11 33.13",
    "label": "Portland Cement-Stabilized Base Courses",
    "level": 5
  },
  {
    "code": "32 11 36",
    "label": "Concrete Base Courses",
    "level": 4
  },
  {
    "code": "32 11 36.11",
    "label": "Soil-Cement Concrete Base Courses",
    "level": 5
  },
  {
    "code": "32 11 36.13",
    "label": "Lean Concrete Base Courses",
    "level": 5
  },
  {
    "code": "32 11 36.16",
    "label": "Plain Cement Concrete Base Courses",
    "level": 5
  },
  {
    "code": "32 11 36.19",
    "label": "Hydraulic Cement Concrete Base Courses",
    "level": 5
  },
  {
    "code": "32 11 39",
    "label": "Shell Base Course",
    "level": 4
  },
  {
    "code": "32 12 00",
    "label": "Flexible Paving",
    "level": 3
  },
  {
    "code": "32 12 13",
    "label": "Preparatory Coats",
    "level": 4
  },
  {
    "code": "32 12 13.13",
    "label": "Tack Coats",
    "level": 5
  },
  {
    "code": "32 12 13.16",
    "label": "Asphaltic Tack Coats",
    "level": 5
  },
  {
    "code": "32 12 13.19",
    "label": "Prime Coats",
    "level": 5
  },
  {
    "code": "32 12 13.23",
    "label": "Asphaltic Prime Coats",
    "level": 5
  },
  {
    "code": "32 12 16",
    "label": "Asphalt Paving",
    "level": 4
  },
  {
    "code": "32 12 16.13",
    "label": "Plant-Mix Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 12 16.16",
    "label": "Road-Mix Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 12 16.19",
    "label": "Cold-Mix Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 12 16.23",
    "label": "Reinforced Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 12 16.26",
    "label": "Fiber-Modified Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 12 16.29",
    "label": "Polymer-Modified Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 12 16.33",
    "label": "Granulated Rubber-Modified Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 12 16.36",
    "label": "Athletic Asphalt Paving",
    "level": 5
  },
  {
    "code": "32 12 19",
    "label": "Asphalt Paving Wearing Courses",
    "level": 4
  },
  {
    "code": "32 12 19.13",
    "label": "Road-Mix Asphalt Paving Wearing Courses",
    "level": 5
  },
  {
    "code": "32 12 19.16",
    "label": "Resin-Modified Asphalt Paving Wearing Courses",
    "level": 5
  },
  {
    "code": "32 12 19.19",
    "label": "Porous Friction Asphalt Paving Wearing Courses",
    "level": 5
  },
  {
    "code": "32 12 33",
    "label": "Flexible Paving Surface Treatments",
    "level": 4
  },
  {
    "code": "32 12 36",
    "label": "Seal Coats",
    "level": 4
  },
  {
    "code": "32 12 36.13",
    "label": "Asphaltic Seal and Fog Coats",
    "level": 5
  },
  {
    "code": "32 12 36.16",
    "label": "Coal Tar Seal Coats",
    "level": 5
  },
  {
    "code": "32 12 36.19",
    "label": "Coal Tar Seal Coats with Unvulcanized Rubber",
    "level": 5
  },
  {
    "code": "32 12 36.23",
    "label": "Fuel-Resistant Sealers",
    "level": 5
  },
  {
    "code": "32 12 43",
    "label": "Porous Flexible Paving",
    "level": 4
  },
  {
    "code": "32 12 73",
    "label": "Asphalt Paving Joint Sealants",
    "level": 4
  },
  {
    "code": "32 13 00",
    "label": "Rigid Paving",
    "level": 3
  },
  {
    "code": "32 13 13",
    "label": "Concrete Paving",
    "level": 4
  },
  {
    "code": "32 13 13.13",
    "label": "Exposed Aggregate Concrete Paving",
    "level": 5
  },
  {
    "code": "32 13 13.16",
    "label": "Power-Compacted Concrete Paving",
    "level": 5
  },
  {
    "code": "32 13 13.17",
    "label": "Roller-Compacted Concrete Paving",
    "level": 5
  },
  {
    "code": "32 13 13.19",
    "label": "Prestressed Concrete Paving",
    "level": 5
  },
  {
    "code": "32 13 13.23",
    "label": "Concrete Paving Surface Treatment",
    "level": 5
  },
  {
    "code": "32 13 13.26",
    "label": "Stained Concrete Paving",
    "level": 5
  },
  {
    "code": "32 13 13.33",
    "label": "Plain Concrete Paving",
    "level": 5
  },
  {
    "code": "32 13 16",
    "label": "Decorative Concrete Paving",
    "level": 4
  },
  {
    "code": "32 13 16.13",
    "label": "Patterned Concrete Paving",
    "level": 5
  },
  {
    "code": "32 13 16.19",
    "label": "Imprinted Concrete Paving",
    "level": 5
  },
  {
    "code": "32 13 16.23",
    "label": "Stamped Concrete Paving",
    "level": 5
  },
  {
    "code": "32 13 43",
    "label": "Pervious Concrete Paving",
    "level": 4
  },
  {
    "code": "32 13 73",
    "label": "Concrete Paving Joint Sealants",
    "level": 4
  },
  {
    "code": "32 13 73.13",
    "label": "Fuel-Resistant Concrete Paving Joint Sealants",
    "level": 5
  },
  {
    "code": "32 13 73.16",
    "label": "Field-Molded Concrete Paving Joint Sealants",
    "level": 5
  },
  {
    "code": "32 13 73.19",
    "label": "Compression Concrete Paving Joint Sealants",
    "level": 5
  },
  {
    "code": "32 14 00",
    "label": "Unit Paving",
    "level": 3
  },
  {
    "code": "32 14 13",
    "label": "Precast Concrete Unit Paving",
    "level": 4
  },
  {
    "code": "32 14 13.13",
    "label": "Interlocking Precast Concrete Unit Paving",
    "level": 5
  },
  {
    "code": "32 14 13.16",
    "label": "Precast Concrete Unit Paving Slabs",
    "level": 5
  },
  {
    "code": "32 14 13.19",
    "label": "Porous Precast Concrete Unit Paving",
    "level": 5
  },
  {
    "code": "32 14 16",
    "label": "Brick Unit Paving",
    "level": 4
  },
  {
    "code": "32 14 23",
    "label": "Asphalt Unit Paving",
    "level": 4
  },
  {
    "code": "32 14 26",
    "label": "Wood Paving",
    "level": 4
  },
  {
    "code": "32 14 29",
    "label": "Rubber Paving",
    "level": 4
  },
  {
    "code": "32 14 33",
    "label": "Plastic Paving",
    "level": 4
  },
  {
    "code": "32 14 33.13",
    "label": "Permeable Plastic Paving",
    "level": 5
  },
  {
    "code": "32 14 40",
    "label": "Stone Paving",
    "level": 4
  },
  {
    "code": "32 14 43",
    "label": "Porous Unit Paving",
    "level": 4
  },
  {
    "code": "32 15 00",
    "label": "Aggregate Surfacing",
    "level": 3
  },
  {
    "code": "32 15 13",
    "label": "Cinder Surfacing",
    "level": 4
  },
  {
    "code": "32 15 40",
    "label": "Crushed Stone Surfacing",
    "level": 4
  },
  {
    "code": "32 15 50",
    "label": "Aggregate-Turf Pavement",
    "level": 4
  },
  {
    "code": "32 16 00",
    "label": "Curbs, Gutters, Sidewalks, and Driveways",
    "level": 3
  },
  {
    "code": "32 16 13",
    "label": "Curbs and Gutters",
    "level": 4
  },
  {
    "code": "32 16 13.13",
    "label": "Cast-In-Place Concrete Curbs and Gutters",
    "level": 5
  },
  {
    "code": "32 16 13.16",
    "label": "Steel Faced Curbs",
    "level": 5
  },
  {
    "code": "32 16 13.23",
    "label": "Precast Concrete Curbs and Gutters",
    "level": 5
  },
  {
    "code": "32 16 13.33",
    "label": "Asphalt Curbs",
    "level": 5
  },
  {
    "code": "32 16 13.43",
    "label": "Stone Curbs",
    "level": 5
  },
  {
    "code": "32 16 23",
    "label": "Sidewalks",
    "level": 4
  },
  {
    "code": "32 16 33",
    "label": "Driveways",
    "level": 4
  },
  {
    "code": "32 17 00",
    "label": "Paving Specialties",
    "level": 3
  },
  {
    "code": "32 17 13",
    "label": "Parking Bumpers",
    "level": 4
  },
  {
    "code": "32 17 13.13",
    "label": "Metal Parking Bumpers",
    "level": 5
  },
  {
    "code": "32 17 13.16",
    "label": "Plastic Parking Bumpers",
    "level": 5
  },
  {
    "code": "32 17 13.19",
    "label": "Precast Concrete Parking Bumpers",
    "level": 5
  },
  {
    "code": "32 17 13.23",
    "label": "Rubber Parking Bumpers",
    "level": 5
  },
  {
    "code": "32 17 13.26",
    "label": "Wood Parking Bumpers",
    "level": 5
  },
  {
    "code": "32 17 16",
    "label": "Manufactured Traffic-Calming Devices",
    "level": 4
  },
  {
    "code": "32 17 23",
    "label": "Pavement Markings",
    "level": 4
  },
  {
    "code": "32 17 23.13",
    "label": "Painted Pavement Markings",
    "level": 5
  },
  {
    "code": "32 17 23.23",
    "label": "Raised Pavement Markings",
    "level": 5
  },
  {
    "code": "32 17 23.33",
    "label": "Plastic Pavement Markings",
    "level": 5
  },
  {
    "code": "32 17 26",
    "label": "Tactile Warning Surfacing",
    "level": 4
  },
  {
    "code": "32 17 29",
    "label": "Pavement Embedded Warning Lights",
    "level": 4
  },
  {
    "code": "32 17 43",
    "label": "Pavement Snow Melting Systems",
    "level": 4
  },
  {
    "code": "32 18 00",
    "label": "Athletic and Recreational Surfacing",
    "level": 3
  },
  {
    "code": "32 18 13",
    "label": "Synthetic Grass Surfacing",
    "level": 4
  },
  {
    "code": "32 18 16",
    "label": "Synthetic Resilient Surfacing",
    "level": 4
  },
  {
    "code": "32 18 16.13",
    "label": "Playground Protective Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23",
    "label": "Athletic Surfacing",
    "level": 4
  },
  {
    "code": "32 18 23.13",
    "label": "Baseball Field Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.16",
    "label": "Natural Baseball Field Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.19",
    "label": "Synthetic Baseball Field Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.23",
    "label": "Field Sport Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.26",
    "label": "Natural Field Sport Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.29",
    "label": "Synthetic Field Sport Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.33",
    "label": "Running Track Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.36",
    "label": "Natural Running Track Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.39",
    "label": "Synthetic Running Track Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.43",
    "label": "Recreational Court Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.53",
    "label": "Tennis Court Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.56",
    "label": "Natural Tennis Court Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.59",
    "label": "Synthetic Tennis Court Surfacing",
    "level": 5
  },
  {
    "code": "32 18 23.63",
    "label": "Equestrian Surfacing",
    "level": 5
  },
  {
    "code": "32 30 00",
    "label": "Site Improvements",
    "level": 2
  },
  {
    "code": "32 31 00",
    "label": "Fences and Gates",
    "level": 3
  },
  {
    "code": "32 31 11",
    "label": "Gate Operators",
    "level": 4
  },
  {
    "code": "32 31 13",
    "label": "Chain Link Fences and Gates",
    "level": 4
  },
  {
    "code": "32 31 13.23",
    "label": "Recreational Court Fences and Gates",
    "level": 5
  },
  {
    "code": "32 31 13.26",
    "label": "Tennis Court Fences and Gates",
    "level": 5
  },
  {
    "code": "32 31 13.29",
    "label": "Tennis Court Wind Breaker",
    "level": 5
  },
  {
    "code": "32 31 13.33",
    "label": "Chain Link Backstops",
    "level": 5
  },
  {
    "code": "32 31 13.53",
    "label": "High-Security Chain Link Fences and Gates",
    "level": 5
  },
  {
    "code": "32 31 16",
    "label": "Welded Wire Fences and Gates",
    "level": 4
  },
  {
    "code": "32 31 17",
    "label": "Expanded Metal Fences and Gates",
    "level": 4
  },
  {
    "code": "32 31 19",
    "label": "Decorative Metal Fences and Gates",
    "level": 4
  },
  {
    "code": "32 31 19.53",
    "label": "Decorative Metal Security Fences and Gates",
    "level": 5
  },
  {
    "code": "32 31 23",
    "label": "Plastic Fences and Gates",
    "level": 4
  },
  {
    "code": "32 31 26",
    "label": "Wire Fences and Gates",
    "level": 4
  },
  {
    "code": "32 31 26.11",
    "label": "Wire Fences with Wood Posts",
    "level": 5
  },
  {
    "code": "32 31 26.13",
    "label": "Wire Fences with Steel Posts",
    "level": 5
  },
  {
    "code": "32 31 29",
    "label": "Wood Fences and Gates",
    "level": 4
  },
  {
    "code": "32 31 32",
    "label": "Composite Fences and Gates",
    "level": 4
  },
  {
    "code": "32 31 53",
    "label": "Cattle Guards",
    "level": 4
  },
  {
    "code": "32 31 56",
    "label": "Wild Life Deterrent Fence",
    "level": 4
  },
  {
    "code": "32 32 00",
    "label": "Retaining Walls",
    "level": 3
  },
  {
    "code": "32 32 13",
    "label": "Cast-in-Place Concrete Retaining Walls",
    "level": 4
  },
  {
    "code": "32 32 16",
    "label": "Precast Concrete Retaining Walls",
    "level": 4
  },
  {
    "code": "32 32 19",
    "label": "Unit Masonry Retaining Walls",
    "level": 4
  },
  {
    "code": "32 32 23",
    "label": "Segmental Retaining Walls",
    "level": 4
  },
  {
    "code": "32 32 23.13",
    "label": "Segmental Concrete Unit Masonry Retaining Walls",
    "level": 5
  },
  {
    "code": "32 32 23.16",
    "label": "Manufactured Modular Walls",
    "level": 5
  },
  {
    "code": "32 32 26",
    "label": "Metal Crib Retaining Walls",
    "level": 4
  },
  {
    "code": "32 32 29",
    "label": "Timber Retaining Walls",
    "level": 4
  },
  {
    "code": "32 32 34",
    "label": "Reinforced Soil Retaining Walls",
    "level": 4
  },
  {
    "code": "32 32 36",
    "label": "Gabion Retaining Walls",
    "level": 4
  },
  {
    "code": "32 32 43",
    "label": "Soldier-Beam Retaining Walls",
    "level": 4
  },
  {
    "code": "32 32 53",
    "label": "Stone Retaining Walls",
    "level": 4
  },
  {
    "code": "32 33 00",
    "label": "Site Furnishings",
    "level": 3
  },
  {
    "code": "32 33 13",
    "label": "Site Bicycle Racks",
    "level": 4
  },
  {
    "code": "32 33 14",
    "label": "Site Bicycle Lockers",
    "level": 4
  },
  {
    "code": "32 33 23",
    "label": "Site Trash and Litter Receptacles",
    "level": 4
  },
  {
    "code": "32 33 33",
    "label": "Site Manufactured Planters",
    "level": 4
  },
  {
    "code": "32 33 43",
    "label": "Site Seating and Tables",
    "level": 4
  },
  {
    "code": "32 33 43.13",
    "label": "Site Seating",
    "level": 5
  },
  {
    "code": "32 33 43.53",
    "label": "Site Tables",
    "level": 5
  },
  {
    "code": "32 34 00",
    "label": "Fabricated Bridges",
    "level": 3
  },
  {
    "code": "32 34 13",
    "label": "Fabricated Pedestrian Bridges",
    "level": 4
  },
  {
    "code": "32 34 23",
    "label": "Fabricated Roadway Bridges",
    "level": 4
  },
  {
    "code": "32 34 33",
    "label": "Fabricated Railway Bridges",
    "level": 4
  },
  {
    "code": "32 35 00",
    "label": "Screening Devices",
    "level": 3
  },
  {
    "code": "32 35 13",
    "label": "Screens and Louvers",
    "level": 4
  },
  {
    "code": "32 35 16",
    "label": "Sound Barriers",
    "level": 4
  },
  {
    "code": "32 35 23",
    "label": "Fire Barriers",
    "level": 4
  },
  {
    "code": "32 35 26",
    "label": "Blast Barriers",
    "level": 4
  },
  {
    "code": "32 39 00",
    "label": "Manufactured Site Specialties",
    "level": 3
  },
  {
    "code": "32 39 13",
    "label": "Manufactured Metal Bollards",
    "level": 4
  },
  {
    "code": "32 39 13.11",
    "label": "Manufactured Metal Security Bollards",
    "level": 5
  },
  {
    "code": "32 39 16",
    "label": "Manufactured Fire Pits",
    "level": 4
  },
  {
    "code": "32 39 33",
    "label": "Artificial Rock Fabrications",
    "level": 4
  },
  {
    "code": "32 70 00",
    "label": "Wetlands",
    "level": 2
  },
  {
    "code": "32 71 00",
    "label": "Constructed Wetlands",
    "level": 3
  },
  {
    "code": "32 72 00",
    "label": "Wetlands Restoration",
    "level": 3
  },
  {
    "code": "32 80 00",
    "label": "Irrigation",
    "level": 2
  },
  {
    "code": "32 81 00",
    "label": "Irrigation Components",
    "level": 3
  },
  {
    "code": "32 81 13",
    "label": "Irrigation Intake Screens",
    "level": 4
  },
  {
    "code": "32 82 00",
    "label": "Irrigation Pumps",
    "level": 3
  },
  {
    "code": "32 84 00",
    "label": "Planting Irrigation",
    "level": 3
  },
  {
    "code": "32 84 13",
    "label": "Drip Irrigation",
    "level": 4
  },
  {
    "code": "32 84 23",
    "label": "Underground Sprinklers",
    "level": 4
  },
  {
    "code": "32 86 00",
    "label": "Agricultural Irrigation",
    "level": 3
  },
  {
    "code": "32 90 00",
    "label": "Planting",
    "level": 2
  },
  {
    "code": "32 91 00",
    "label": "Planting Preparation",
    "level": 3
  },
  {
    "code": "32 91 13",
    "label": "Soil Preparation",
    "level": 4
  },
  {
    "code": "32 91 13.13",
    "label": "Hydro-Punching",
    "level": 5
  },
  {
    "code": "32 91 13.16",
    "label": "Mulching",
    "level": 5
  },
  {
    "code": "32 91 13.19",
    "label": "Planting Soil Mixing",
    "level": 5
  },
  {
    "code": "32 91 13.23",
    "label": "Structural Soil Mixing",
    "level": 5
  },
  {
    "code": "32 91 13.26",
    "label": "Planting Beds",
    "level": 5
  },
  {
    "code": "32 91 16",
    "label": "Planting Soil Stabilization",
    "level": 4
  },
  {
    "code": "32 91 16.13",
    "label": "Blanket Planting Soil Stabilization",
    "level": 5
  },
  {
    "code": "32 91 16.16",
    "label": "Mat Planting Soil Stabilization",
    "level": 5
  },
  {
    "code": "32 91 16.19",
    "label": "Netting Planting Soil Stabilization",
    "level": 5
  },
  {
    "code": "32 91 19",
    "label": "Landscape Grading",
    "level": 4
  },
  {
    "code": "32 91 19.13",
    "label": "Topsoil Placement and Grading",
    "level": 5
  },
  {
    "code": "32 92 00",
    "label": "Turf and Grasses",
    "level": 3
  },
  {
    "code": "32 92 13",
    "label": "Hydro-Mulching",
    "level": 4
  },
  {
    "code": "32 92 16",
    "label": "Plugging",
    "level": 4
  },
  {
    "code": "32 92 19",
    "label": "Seeding",
    "level": 4
  },
  {
    "code": "32 92 19.13",
    "label": "Mechanical Seeding",
    "level": 5
  },
  {
    "code": "32 92 19.16",
    "label": "Hydraulic Seeding",
    "level": 5
  },
  {
    "code": "32 92 23",
    "label": "Sodding",
    "level": 4
  },
  {
    "code": "32 92 26",
    "label": "Sprigging",
    "level": 4
  },
  {
    "code": "32 92 26.13",
    "label": "Stolonizing",
    "level": 5
  },
  {
    "code": "32 93 00",
    "label": "Plants",
    "level": 3
  },
  {
    "code": "32 93 13",
    "label": "Ground Covers",
    "level": 4
  },
  {
    "code": "32 93 23",
    "label": "Plants and Bulbs",
    "level": 4
  },
  {
    "code": "32 93 33",
    "label": "Shrubs",
    "level": 4
  },
  {
    "code": "32 93 43",
    "label": "Trees",
    "level": 4
  },
  {
    "code": "32 93 93",
    "label": "Exterior Artificial Plants",
    "level": 4
  },
  {
    "code": "32 94 00",
    "label": "Planting Accessories",
    "level": 3
  },
  {
    "code": "32 94 13",
    "label": "Landscape Edging",
    "level": 4
  },
  {
    "code": "32 94 16",
    "label": "Landscape Timbers",
    "level": 4
  },
  {
    "code": "32 94 19",
    "label": "Landscape Surfacing",
    "level": 4
  },
  {
    "code": "32 94 33",
    "label": "Planters",
    "level": 4
  },
  {
    "code": "32 94 43",
    "label": "Tree Grates",
    "level": 4
  },
  {
    "code": "32 94 46",
    "label": "Tree Grids",
    "level": 4
  },
  {
    "code": "32 95 00",
    "label": "Exterior Planting Support Structures",
    "level": 3
  },
  {
    "code": "32 96 00",
    "label": "Transplanting",
    "level": 3
  },
  {
    "code": "32 96 13",
    "label": "Ground Cover Transplanting",
    "level": 4
  },
  {
    "code": "32 96 23",
    "label": "Plant and Bulb Transplanting",
    "level": 4
  },
  {
    "code": "32 96 33",
    "label": "Shrub Transplanting",
    "level": 4
  },
  {
    "code": "32 96 43",
    "label": "Tree Transplanting",
    "level": 4
  },
  {
    "code": "33 00 00",
    "label": "Utilities",
    "level": 1
  },
  {
    "code": "33 01 00",
    "label": "Operation and Maintenance of Utilities",
    "level": 3
  },
  {
    "code": "33 01 10",
    "label": "Operation and Maintenance of Water Utilities",
    "level": 4
  },
  {
    "code": "33 01 10.51",
    "label": "Water Utility Intake Cleaning and Maintenance",
    "level": 5
  },
  {
    "code": "33 01 10.52",
    "label": "Reservoir Maintenance",
    "level": 5
  },
  {
    "code": "33 01 10.53",
    "label": "Flushing of Water Utility Piping",
    "level": 5
  },
  {
    "code": "33 01 10.54",
    "label": "Cleaning of Water Utility Piping",
    "level": 5
  },
  {
    "code": "33 01 10.56",
    "label": "Cleaning of Water Utility Storage Tanks",
    "level": 5
  },
  {
    "code": "33 01 10.57",
    "label": "Disinfection of Water Supply Wells",
    "level": 5
  },
  {
    "code": "33 01 10.58",
    "label": "Disinfection of Water Utility Piping Systems",
    "level": 5
  },
  {
    "code": "33 01 10.59",
    "label": "Disinfection of Water Utility Storage Tanks",
    "level": 5
  },
  {
    "code": "33 01 10.81",
    "label": "Water Supply Well Abandonment",
    "level": 5
  },
  {
    "code": "33 01 10.91",
    "label": "Rehabilitation of Water Supply Wells",
    "level": 5
  },
  {
    "code": "33 01 10.92",
    "label": "Redevelopment of Water Supply Wells",
    "level": 5
  },
  {
    "code": "33 01 12",
    "label": "Inspection and Testing of Water Utilities",
    "level": 4
  },
  {
    "code": "33 01 12.11",
    "label": "Leakage Detection",
    "level": 5
  },
  {
    "code": "33 01 12.13",
    "label": "Electrical Continuity Testing",
    "level": 5
  },
  {
    "code": "33 01 30",
    "label": "Operation and Maintenance of Sewer Utilities",
    "level": 4
  },
  {
    "code": "33 01 30.11",
    "label": "Television Inspection of Sewers",
    "level": 5
  },
  {
    "code": "33 01 30.13",
    "label": "Dye Testing of Sewers",
    "level": 5
  },
  {
    "code": "33 01 30.16",
    "label": "Smoke Testing",
    "level": 5
  },
  {
    "code": "33 01 30.23",
    "label": "Pipe Bursting",
    "level": 5
  },
  {
    "code": "33 01 30.41",
    "label": "Cleaning of Sewers",
    "level": 5
  },
  {
    "code": "33 01 30.42",
    "label": "Cleaning of Manholes",
    "level": 5
  },
  {
    "code": "33 01 30.43",
    "label": "Removal of Protruding Service Connection",
    "level": 5
  },
  {
    "code": "33 01 30.44",
    "label": "Chemical Treatment of Roots in Sewer Lines",
    "level": 5
  },
  {
    "code": "33 01 30.61",
    "label": "Packer Injection Grouting",
    "level": 5
  },
  {
    "code": "33 01 30.72",
    "label": "Cured-in-place Pipe Lining",
    "level": 5
  },
  {
    "code": "33 01 30.73",
    "label": "Cured-in-Place Point Repair",
    "level": 5
  },
  {
    "code": "33 01 30.74",
    "label": "Cured-in-Place Lateral Lining",
    "level": 5
  },
  {
    "code": "33 01 30.77",
    "label": "Cured-in-Place Lateral Shortliners",
    "level": 5
  },
  {
    "code": "33 01 30.79",
    "label": "Fold-and-Form Pipe Lining",
    "level": 5
  },
  {
    "code": "33 01 30.81",
    "label": "Manhole Rehabilitation",
    "level": 5
  },
  {
    "code": "33 01 30.82",
    "label": "Epoxy Lining for Concrete Manholes",
    "level": 5
  },
  {
    "code": "33 01 30.84",
    "label": "Manhole Inserts",
    "level": 5
  },
  {
    "code": "33 01 30.86",
    "label": "Manhole Rim Adjustment",
    "level": 5
  },
  {
    "code": "33 01 34",
    "label": "Operation and Maintenance of Onsite Wastewater Disposal Systems",
    "level": 4
  },
  {
    "code": "33 01 34.13",
    "label": "Septic Tank Solids Removal",
    "level": 5
  },
  {
    "code": "33 01 34.14",
    "label": "Septic Tank Maintenance",
    "level": 5
  },
  {
    "code": "33 01 34.19",
    "label": "Septic Tank Abandonment",
    "level": 5
  },
  {
    "code": "33 01 34.33",
    "label": "Maintenance of Onsite Sand Filters",
    "level": 5
  },
  {
    "code": "33 01 50",
    "label": "Operation and Maintenance of Hydrocarbon Utilities",
    "level": 4
  },
  {
    "code": "33 01 50.53",
    "label": "Cleaning of Hydrocarbon Conveyance Piping",
    "level": 5
  },
  {
    "code": "33 01 50.56",
    "label": "Cleaning of Hydrocarbon Storage Tanks",
    "level": 5
  },
  {
    "code": "33 01 50.73",
    "label": "Relining of Hydrocarbon Conveyance Piping",
    "level": 5
  },
  {
    "code": "33 01 50.76",
    "label": "Relining of Steel Hydrocarbon Storage Tanks",
    "level": 5
  },
  {
    "code": "33 01 50.81",
    "label": "Hydrocarbon Well Abandonment",
    "level": 5
  },
  {
    "code": "33 01 50.91",
    "label": "Rehabilitation of Hydrocarbon Wells",
    "level": 5
  },
  {
    "code": "33 01 60",
    "label": "Operation and Maintenance of Hydronic and Steam Energy Utilities",
    "level": 4
  },
  {
    "code": "33 01 70",
    "label": "Operation and Maintenance of Electrical Utilities",
    "level": 4
  },
  {
    "code": "33 01 70.51",
    "label": "Electrical Utility Visual Inspection",
    "level": 5
  },
  {
    "code": "33 01 70.52",
    "label": "Electrical Utility Thermographic Surveys",
    "level": 5
  },
  {
    "code": "33 01 70.53",
    "label": "Electrical Utility Insulation Testing",
    "level": 5
  },
  {
    "code": "33 01 70.54",
    "label": "Electrical Utility Insulating Oil/Fluid Analysis",
    "level": 5
  },
  {
    "code": "33 01 80",
    "label": "Operation and Maintenance of Communications Utilities",
    "level": 4
  },
  {
    "code": "33 01 80.51",
    "label": "Communication Utility Visual Inspection",
    "level": 5
  },
  {
    "code": "33 01 80.52",
    "label": "Communication Utility Thermographic Surveys",
    "level": 5
  },
  {
    "code": "33 05 00",
    "label": "Common Work Results for Utilities",
    "level": 3
  },
  {
    "code": "33 05 05",
    "label": "Buried Piping Installation",
    "level": 4
  },
  {
    "code": "33 05 05.11",
    "label": "Installing Bell-and-Spigot Joints",
    "level": 5
  },
  {
    "code": "33 05 05.13",
    "label": "Installing Push-on Joints",
    "level": 5
  },
  {
    "code": "33 05 05.15",
    "label": "Installing Butt-and-Strap Joints",
    "level": 5
  },
  {
    "code": "33 05 05.16",
    "label": "Installing Mechanical Joints",
    "level": 5
  },
  {
    "code": "33 05 05.18",
    "label": "Installing Restrained Joints",
    "level": 5
  },
  {
    "code": "33 05 05.19",
    "label": "Fusing Joints",
    "level": 5
  },
  {
    "code": "33 05 05.31",
    "label": "Hydrostatic Testing",
    "level": 5
  },
  {
    "code": "33 05 05.33",
    "label": "Infiltration and Exfiltration Testing",
    "level": 5
  },
  {
    "code": "33 05 05.36",
    "label": "Vacuum Testing",
    "level": 5
  },
  {
    "code": "33 05 05.41",
    "label": "Air Testing",
    "level": 5
  },
  {
    "code": "33 05 05.43",
    "label": "Mandrel Testing",
    "level": 5
  },
  {
    "code": "33 05 05.46",
    "label": "Lamp Testing",
    "level": 5
  },
  {
    "code": "33 05 07",
    "label": "Trenchless Installation of Utility Piping",
    "level": 4
  },
  {
    "code": "33 05 07.13",
    "label": "Utility Directional Drilling",
    "level": 5
  },
  {
    "code": "33 05 07.23",
    "label": "Utility Boring and Jacking",
    "level": 5
  },
  {
    "code": "33 05 07.24",
    "label": "Casing Piping for Utility Jacking",
    "level": 5
  },
  {
    "code": "33 05 07.33",
    "label": "Tunnelling",
    "level": 5
  },
  {
    "code": "33 05 07.36",
    "label": "Microtunnelling",
    "level": 5
  },
  {
    "code": "33 05 07.43",
    "label": "Utility Impact Moling",
    "level": 5
  },
  {
    "code": "33 05 07.53",
    "label": "Cable Trenching and Plowing",
    "level": 5
  },
  {
    "code": "33 05 09",
    "label": "Piping Specials for Utilities",
    "level": 4
  },
  {
    "code": "33 05 09.13",
    "label": "Couplings for Utility Piping",
    "level": 5
  },
  {
    "code": "33 05 09.23",
    "label": "Adapters for Utility Piping",
    "level": 5
  },
  {
    "code": "33 05 09.33",
    "label": "Thrust Restraint for Utility Piping",
    "level": 5
  },
  {
    "code": "33 05 09.43",
    "label": "Tappling Sleeves and Saddles for Utility Piping",
    "level": 5
  },
  {
    "code": "33 05 11",
    "label": "Aluminum Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 12",
    "label": "Brass Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 16",
    "label": "Cast-Iron Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 17",
    "label": "Copper Utility Pipe and Tubing",
    "level": 4
  },
  {
    "code": "33 05 19",
    "label": "Ductile-Iron Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 21",
    "label": "High-Alloy Nickel Utility Pipe and Tubing",
    "level": 4
  },
  {
    "code": "33 05 23",
    "label": "Stainless Steel Utility Pipe and Tubing",
    "level": 4
  },
  {
    "code": "33 05 23.13",
    "label": "Duplex and Super-Duplex Stainless Steel Utility Pipe",
    "level": 5
  },
  {
    "code": "33 05 23.23",
    "label": "300- and 400-Series Stainless Steel Utility Pipe",
    "level": 5
  },
  {
    "code": "33 05 23.33",
    "label": "Special-Fabrication Stainless Steel Utility Pipe and Tubing",
    "level": 5
  },
  {
    "code": "33 05 24",
    "label": "Steel Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 24.13",
    "label": "Steel Pipe and Tubing for Air and Gas Service",
    "level": 5
  },
  {
    "code": "33 05 24.23",
    "label": "Steel Pipe for Water Service",
    "level": 5
  },
  {
    "code": "33 05 24.26",
    "label": "Steel Pipe and Tubing for Utility Liquid Service",
    "level": 5
  },
  {
    "code": "33 05 24.33",
    "label": "Steel Pipe for Bulk Materials Conveyance",
    "level": 5
  },
  {
    "code": "33 05 27",
    "label": "Corrugated Metal Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 27.13",
    "label": "Corrugated Metal Culvert Pipe",
    "level": 5
  },
  {
    "code": "33 05 27.23",
    "label": "Corrugated Metal Slotted Pipe",
    "level": 5
  },
  {
    "code": "33 05 27.33",
    "label": "Corrugated Metal Culvert Arch Pipe",
    "level": 5
  },
  {
    "code": "33 05 31",
    "label": "Thermoplastic Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 31.11",
    "label": "Polyvinyl Chloride Gravity Sewer Pipe",
    "level": 5
  },
  {
    "code": "33 05 31.13",
    "label": "Polyvinyl Chloride Pressure Pipe",
    "level": 5
  },
  {
    "code": "33 05 31.16",
    "label": "Polyvinyl Chloride Pressure Pipe for Water Transmission and Distribution (AWWA C900 and AWWA C905)",
    "level": 5
  },
  {
    "code": "33 05 31.19",
    "label": "Fusible Polyvinyl Chloride Pipe",
    "level": 5
  },
  {
    "code": "33 05 31.21",
    "label": "Ribbed Polyvinyl Chloride Gravity Pipe",
    "level": 5
  },
  {
    "code": "33 05 31.23",
    "label": "Dual-Wall Polyvinyl Chloride Profile Pipe",
    "level": 5
  },
  {
    "code": "33 05 31.26",
    "label": "Polyvinyl Chloride Sleeve Pipe",
    "level": 5
  },
  {
    "code": "33 05 31.27",
    "label": "Polyvinyl Chloride Perforated Drainage Pipe",
    "level": 5
  },
  {
    "code": "33 05 31.29",
    "label": "Polyvinyl Chloride Electrical Duct",
    "level": 5
  },
  {
    "code": "33 05 31.33",
    "label": "ABS Utility Pipe",
    "level": 5
  },
  {
    "code": "33 05 33",
    "label": "Polyethylene Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 33.13",
    "label": "Corrugated-Wall, Smooth Interior HDPE Gravity Pipe",
    "level": 5
  },
  {
    "code": "33 05 33.23",
    "label": "Polyethylene Pressure Pipe and Tubing (AWWA C901 and AWWA C906)",
    "level": 5
  },
  {
    "code": "33 05 33.33",
    "label": "Corrugated, Perforated HDPE Drainage Pipe",
    "level": 5
  },
  {
    "code": "33 05 33.36",
    "label": "Corrugated, Non-Perforated HDPE Drainage Pipe",
    "level": 5
  },
  {
    "code": "33 05 33.53",
    "label": "HDPE Gas Utility Pipe",
    "level": 5
  },
  {
    "code": "33 05 33.56",
    "label": "Medium-Density Polyethylene Gas Utility Pipe",
    "level": 5
  },
  {
    "code": "33 05 33.63",
    "label": "HDPE Communication Duct",
    "level": 5
  },
  {
    "code": "33 05 36",
    "label": "Fiberglass-Reinforced Plastic Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 36.13",
    "label": "Fiberglass-Reinforced Plastic Pipe for Utility Air, Gas, and Odor Service",
    "level": 5
  },
  {
    "code": "33 05 36.23",
    "label": "Fiberglass-Reinforced Plastic Pipe for Utility Liquid Service",
    "level": 5
  },
  {
    "code": "33 05 36.33",
    "label": "Fiberglass-Reinforced Plastic Pipe for Electrical Service",
    "level": 5
  },
  {
    "code": "33 05 37",
    "label": "Centrifugally Cast Fiberglass-Reinforced Polymer Mortar Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 39",
    "label": "Concrete Pipe",
    "level": 4
  },
  {
    "code": "33 05 39.11",
    "label": "Concrete Pressure Pipe, Steel-Cylinder Type (AWWA C300)",
    "level": 5
  },
  {
    "code": "33 05 39.13",
    "label": "Prestressed Concrete Pressure Pipe, Steel-Cylinder Type (AWWA C301)",
    "level": 5
  },
  {
    "code": "33 05 39.16",
    "label": "Reinforced Concrete Pressure Pipe, Non-cylinder Type (AWWA C302)",
    "level": 5
  },
  {
    "code": "33 05 39.17",
    "label": "Concrete Pressure Pipe, Bar-Wrapped Steel-Cylinder Type (AWWA C303)",
    "level": 5
  },
  {
    "code": "33 05 39.23",
    "label": "Reinforced Concrete Low-Head Pressure Utility Pipe",
    "level": 5
  },
  {
    "code": "33 05 39.33",
    "label": "Non-Reinforced Concrete Sewer and Culvert Pipe",
    "level": 5
  },
  {
    "code": "33 05 39.36",
    "label": "Non-Reinforced Concrete Irrigation and Drainage Pipe",
    "level": 5
  },
  {
    "code": "33 05 39.41",
    "label": "Reinforced Concrete Pipe for Sewers and Culverts",
    "level": 5
  },
  {
    "code": "33 05 39.43",
    "label": "Perforated Concrete Utility Pipe",
    "level": 5
  },
  {
    "code": "33 05 39.46",
    "label": "Reinforced Concrete Elliptical Pipe for Sewers and Culverts",
    "level": 5
  },
  {
    "code": "33 05 39.49",
    "label": "Reinforced Concrete Box Sections for Sewers and Culverts",
    "level": 5
  },
  {
    "code": "33 05 39.63",
    "label": "Concrete Pipe Closures",
    "level": 5
  },
  {
    "code": "33 05 39.66",
    "label": "Concrete Pipe Thrust Restraints",
    "level": 5
  },
  {
    "code": "33 05 39.69",
    "label": "Concrete Pipe Wall Fittings",
    "level": 5
  },
  {
    "code": "33 05 41",
    "label": "Vitrified Clay Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 43",
    "label": "Ceramic Drainage Tile",
    "level": 4
  },
  {
    "code": "33 05 46",
    "label": "Asbestos Cement Utility Pipe",
    "level": 4
  },
  {
    "code": "33 05 61",
    "label": "Concrete Manholes",
    "level": 4
  },
  {
    "code": "33 05 63",
    "label": "Concrete Vaults and Chambers",
    "level": 4
  },
  {
    "code": "33 05 66",
    "label": "Concrete Distribution Chambers",
    "level": 4
  },
  {
    "code": "33 05 69",
    "label": "Concrete Trenchways",
    "level": 4
  },
  {
    "code": "33 05 71",
    "label": "Cleanouts",
    "level": 4
  },
  {
    "code": "33 05 73",
    "label": "Polyethylene Manholes",
    "level": 4
  },
  {
    "code": "33 05 76",
    "label": "Fiberglass Manholes",
    "level": 4
  },
  {
    "code": "33 05 77",
    "label": "Fiberglass Metering Manholes",
    "level": 4
  },
  {
    "code": "33 05 81",
    "label": "Metallic Castings for Utility Structures",
    "level": 4
  },
  {
    "code": "33 05 83",
    "label": "Non-Metallic Accessories for Utility Structures",
    "level": 4
  },
  {
    "code": "33 05 93",
    "label": "Common Motor Requirements for Utilities",
    "level": 4
  },
  {
    "code": "33 05 96",
    "label": "Vibration and Seismic Controls for Utilities",
    "level": 4
  },
  {
    "code": "33 05 97",
    "label": "Identification and Signage for Utilities",
    "level": 4
  },
  {
    "code": "33 05 97.13",
    "label": "Signage for Utilities",
    "level": 5
  },
  {
    "code": "33 05 97.16",
    "label": "Markers for Utility Identification",
    "level": 5
  },
  {
    "code": "33 05 97.23",
    "label": "Underground Utility Warning Tape",
    "level": 5
  },
  {
    "code": "33 05 97.33",
    "label": "Utility Identification Flags",
    "level": 5
  },
  {
    "code": "33 06 00",
    "label": "Schedules for Utilities",
    "level": 3
  },
  {
    "code": "33 06 05",
    "label": "Schedules for Utility Piping",
    "level": 4
  },
  {
    "code": "33 06 10",
    "label": "Schedules for Water Utilities",
    "level": 4
  },
  {
    "code": "33 06 30",
    "label": "Schedules for Sanitray Sewerage Utiltiies",
    "level": 4
  },
  {
    "code": "33 06 40",
    "label": "Schedules for Stormwater Utilities",
    "level": 4
  },
  {
    "code": "33 06 40.13",
    "label": "Stormwater Drainage System Schedules",
    "level": 5
  },
  {
    "code": "33 06 50",
    "label": "Schedules for Hydrocarbon Utilities",
    "level": 4
  },
  {
    "code": "33 06 60",
    "label": "Schedules for Hydronic and Steam Energy Utilities",
    "level": 4
  },
  {
    "code": "33 06 70",
    "label": "Schedules for Electrical Utilities",
    "level": 4
  },
  {
    "code": "33 06 80",
    "label": "Schedules for Communications Utilities",
    "level": 4
  },
  {
    "code": "33 08 00",
    "label": "Commissioning of Utilities",
    "level": 3
  },
  {
    "code": "33 08 10",
    "label": "Commissioning of Water Utilities",
    "level": 4
  },
  {
    "code": "33 08 30",
    "label": "Commissioning of Sanitary Sewerage Utilities",
    "level": 4
  },
  {
    "code": "33 08 40",
    "label": "Commissioning of Stormwater Utilities",
    "level": 4
  },
  {
    "code": "33 08 50",
    "label": "Commissioning of Hydrocarbon Utilities",
    "level": 4
  },
  {
    "code": "33 08 60",
    "label": "Commissioning of Hydronic and Steam Energy Utilities",
    "level": 4
  },
  {
    "code": "33 08 70",
    "label": "Commissioning of Electrical Utilities",
    "level": 4
  },
  {
    "code": "33 08 80",
    "label": "Commissioning of Communications Utilities",
    "level": 4
  },
  {
    "code": "33 09 00",
    "label": "Instrumentation and Control for Utilities",
    "level": 3
  },
  {
    "code": "33 09 01",
    "label": "Utility Meter Registers",
    "level": 4
  },
  {
    "code": "33 09 01.13",
    "label": "Mechanical Registers",
    "level": 5
  },
  {
    "code": "33 09 01.23",
    "label": "Pulse Registers",
    "level": 5
  },
  {
    "code": "33 09 01.33",
    "label": "Encoder Registers",
    "level": 5
  },
  {
    "code": "33 09 02",
    "label": "Touch-based Utility Meter Reading Equipment",
    "level": 4
  },
  {
    "code": "33 09 03",
    "label": "Handheld Radio Frequency Utility Meter Reading Equipment",
    "level": 4
  },
  {
    "code": "33 09 04",
    "label": "Mobile Radio Frequency Utility Meter Reading Equipment",
    "level": 4
  },
  {
    "code": "33 09 05",
    "label": "Fixed-Network Radio Frequency Utility Meter Reading Equipment",
    "level": 4
  },
  {
    "code": "33 09 06",
    "label": "Satellite Radio Frequency Utility Meter Reading Equipment",
    "level": 4
  },
  {
    "code": "33 09 07",
    "label": "Power Line Communication Utility Meter Reading Equipment",
    "level": 4
  },
  {
    "code": "33 09 08",
    "label": "Wireless Local Area Network Utility Meter Reading Equipment",
    "level": 4
  },
  {
    "code": "33 09 09",
    "label": "Meter Data Acquisition and Hosting Software",
    "level": 4
  },
  {
    "code": "33 09 10",
    "label": "Instrumentation and Control for Water Utilities",
    "level": 4
  },
  {
    "code": "33 09 30",
    "label": "Instrumentation and Control for Sanitary Sewerage Utilities",
    "level": 4
  },
  {
    "code": "33 09 40",
    "label": "Instrumentation and Control for Stormwater Utilities",
    "level": 4
  },
  {
    "code": "33 09 50",
    "label": "Instrumentation and Control for Hydrocarbon Utilities",
    "level": 4
  },
  {
    "code": "33 09 53",
    "label": "Leak Detection for Hydrocarbon Systems",
    "level": 4
  },
  {
    "code": "33 09 60",
    "label": "Instrumentation and Control for Hydronic and Steam Energy Utilities",
    "level": 4
  },
  {
    "code": "33 09 70",
    "label": "Instrumentation and Control for Electrical Utilities",
    "level": 4
  },
  {
    "code": "33 09 80",
    "label": "Instrumentation and Control for Communications Utilities",
    "level": 4
  },
  {
    "code": "33 10 00",
    "label": "Water Utilities",
    "level": 2
  },
  {
    "code": "33 11 00",
    "label": "Groundwater Sources",
    "level": 3
  },
  {
    "code": "33 11 11",
    "label": "Test Wells",
    "level": 4
  },
  {
    "code": "33 11 13",
    "label": "Potable Water Supply Wells",
    "level": 4
  },
  {
    "code": "33 11 16",
    "label": "Irrigation Wells",
    "level": 4
  },
  {
    "code": "33 11 19",
    "label": "Aquifer Recharging Wells",
    "level": 4
  },
  {
    "code": "33 11 33",
    "label": "Vertically Suspended Dry-Location Centrifugal Well Pumps",
    "level": 4
  },
  {
    "code": "33 11 36",
    "label": "Submersible Centrifugal Well Pumps",
    "level": 4
  },
  {
    "code": "33 11 39",
    "label": "Jet-Type Well Pumps",
    "level": 4
  },
  {
    "code": "33 11 53",
    "label": "Monitoring Wells",
    "level": 4
  },
  {
    "code": "33 12 00",
    "label": "Surface Water Sources",
    "level": 3
  },
  {
    "code": "33 12 11",
    "label": "Intake Structure Systems",
    "level": 4
  },
  {
    "code": "33 12 13",
    "label": "Intake Cribs",
    "level": 4
  },
  {
    "code": "33 12 16",
    "label": "Intake Drop and Riser Shafts",
    "level": 4
  },
  {
    "code": "33 12 31",
    "label": "Reservoir Weight-tensioned, Defined Sump Floating Covers",
    "level": 4
  },
  {
    "code": "33 12 31.13",
    "label": "Reservoir Weight-tensioned, Defined Sump Polyethylene-reinforced Floating Covers",
    "level": 5
  },
  {
    "code": "33 12 31.23",
    "label": "Reservoir Weight-tensioned, Defined Sump Polypropylene-reinforced Floating Covers",
    "level": 5
  },
  {
    "code": "33 12 33",
    "label": "Reservoir Mechanically-tensioned Floating Covers",
    "level": 4
  },
  {
    "code": "33 12 33.13",
    "label": "Reservoir Mechanically-tensioned Polyethylene-reinforced Floating Covers",
    "level": 5
  },
  {
    "code": "33 12 33.23",
    "label": "Reservoir Mechanically-tensioned Polypropylene-reinforced Floating Covers",
    "level": 5
  },
  {
    "code": "33 12 36",
    "label": "Reservoir Short-term Floating Covers",
    "level": 4
  },
  {
    "code": "33 12 39",
    "label": "Reservoir Ball Floating Covers",
    "level": 4
  },
  {
    "code": "33 12 43",
    "label": "Floats for Reservoir Floating Covers",
    "level": 4
  },
  {
    "code": "33 12 46",
    "label": "Appurtenances for Reservoir Floating Covers",
    "level": 4
  },
  {
    "code": "33 12 53",
    "label": "Reservoir Flexible Baffle Curtains",
    "level": 4
  },
  {
    "code": "33 14 00",
    "label": "Water Utility Transmission and Distribution",
    "level": 3
  },
  {
    "code": "33 14 11",
    "label": "Water Utility Transmission Piping",
    "level": 4
  },
  {
    "code": "33 14 13",
    "label": "Public Water Utility Distribution Piping",
    "level": 4
  },
  {
    "code": "33 14 16",
    "label": "Site Water Utility Distribution Piping",
    "level": 4
  },
  {
    "code": "33 14 17",
    "label": "Site Water Utility Service Laterals",
    "level": 4
  },
  {
    "code": "33 14 19",
    "label": "Valves and Hydrants for Water Utility Service",
    "level": 4
  },
  {
    "code": "33 14 23",
    "label": "Enclosures for Water Utility Piping and Valves",
    "level": 4
  },
  {
    "code": "33 14 23.11",
    "label": "Heated, Insulated Aluminum Enclosures for Water Utility Piping and Valves",
    "level": 5
  },
  {
    "code": "33 14 23.13",
    "label": "Heated, Insulated Fiberglass Enclosures for Water Utility Piping and Valves",
    "level": 5
  },
  {
    "code": "33 14 23.16",
    "label": "Unheated, Insulated Aluminum Enclosures for Water Utility Piping and Valves",
    "level": 5
  },
  {
    "code": "33 14 23.17",
    "label": "Unheated, Insulated Fiberglass Enclosures for Water Utility Piping and Valves",
    "level": 5
  },
  {
    "code": "33 14 23.23",
    "label": "Fiberglass Artificial Rock Enclosures for Water Utility Piping and Valves",
    "level": 5
  },
  {
    "code": "33 14 23.26",
    "label": "Plastic Artificial Rock Enclosures for Water Utility Piping and Valves",
    "level": 5
  },
  {
    "code": "33 14 23.33",
    "label": "Enclosures for Water Utility Air Valves",
    "level": 5
  },
  {
    "code": "33 14 43",
    "label": "Packaged Pumping Systems for Water Utility Service",
    "level": 4
  },
  {
    "code": "33 16 00",
    "label": "Water Utility Storage Tanks",
    "level": 3
  },
  {
    "code": "33 16 11",
    "label": "Elevated Composite Water Storage Tanks",
    "level": 4
  },
  {
    "code": "33 16 13",
    "label": "Elevated Pillar-Type Steel Water Storage Tanks",
    "level": 4
  },
  {
    "code": "33 16 16",
    "label": "Multi-Column Elevated Steel Water Storage Tanks",
    "level": 4
  },
  {
    "code": "33 16 19",
    "label": "Elevated Spheroid Steel Water Storage Tanks",
    "level": 4
  },
  {
    "code": "33 16 23",
    "label": "Ground-Level Steel Water Storage Tanks",
    "level": 4
  },
  {
    "code": "33 16 31",
    "label": "Ground-Level AWWA D110 Type I Prestressed Concrete Water Storage Tanks",
    "level": 4
  },
  {
    "code": "33 16 32",
    "label": "Ground-Level AWWA D110 Type II Prestressed Concrete Water Storage Tanks",
    "level": 4
  },
  {
    "code": "33 16 33",
    "label": "Ground-Level AWWA D110 Type III Prestressed Concrete Water Storage Tanks",
    "level": 4
  },
  {
    "code": "33 16 36",
    "label": "Ground-Level Reinforced Concrete Water Storage Tanks",
    "level": 4
  },
  {
    "code": "33 16 53",
    "label": "Ground-Level Metal Water Storage Cisterns",
    "level": 4
  },
  {
    "code": "33 16 56",
    "label": "Ground-Level Plastic Water Storage Cisterns",
    "level": 4
  },
  {
    "code": "33 16 61",
    "label": "Underground Concrete Water Storage Cisterns",
    "level": 4
  },
  {
    "code": "33 16 63",
    "label": "Underground Non-Metallic Water Storage Cisterns",
    "level": 4
  },
  {
    "code": "33 16 66",
    "label": "Underground Plastic Modular Water Storage Cisterns",
    "level": 4
  },
  {
    "code": "33 16 93",
    "label": "Water Storage Tank Interior Curtain Walls",
    "level": 4
  },
  {
    "code": "33 16 96",
    "label": "Water Storage Tank Appurtenances",
    "level": 4
  },
  {
    "code": "33 19 00",
    "label": "Water Utility Metering Equipment",
    "level": 3
  },
  {
    "code": "33 19 13",
    "label": "Positive Displacement Water Meters",
    "level": 4
  },
  {
    "code": "33 19 13.13",
    "label": "Oscillating Piston Water Meters",
    "level": 5
  },
  {
    "code": "33 19 13.23",
    "label": "Nutating Disc Water Meters",
    "level": 5
  },
  {
    "code": "33 19 16",
    "label": "Velocity-Type Water Meters",
    "level": 4
  },
  {
    "code": "33 19 16.13",
    "label": "Single-Jet Water Meters",
    "level": 5
  },
  {
    "code": "33 19 16.16",
    "label": "Multi-Jet Water Meters",
    "level": 5
  },
  {
    "code": "33 19 16.23",
    "label": "Turbine Water Meters",
    "level": 5
  },
  {
    "code": "33 19 16.26",
    "label": "Fire-Type Turbine Water Meters",
    "level": 5
  },
  {
    "code": "33 19 16.29",
    "label": "Portable Fire Hydrant-Type Turbine Water Meters",
    "level": 5
  },
  {
    "code": "33 19 16.33",
    "label": "Propeller Water Meters",
    "level": 5
  },
  {
    "code": "33 19 19",
    "label": "Compound Water Meters",
    "level": 4
  },
  {
    "code": "33 19 23",
    "label": "Magnetic Water Meters",
    "level": 4
  },
  {
    "code": "33 19 26",
    "label": "Ultrasonic Water Meters",
    "level": 4
  },
  {
    "code": "33 19 29",
    "label": "Pre-paid Water Meters",
    "level": 4
  },
  {
    "code": "33 30 00",
    "label": "Sanitary Sewerage",
    "level": 2
  },
  {
    "code": "33 31 00",
    "label": "Sanitary Sewerage Piping",
    "level": 3
  },
  {
    "code": "33 31 11",
    "label": "Public Sanitary Sewerage Gravity Piping",
    "level": 4
  },
  {
    "code": "33 31 13",
    "label": "Site Sanitary Sewerage Gravity Piping",
    "level": 4
  },
  {
    "code": "33 31 16",
    "label": "Site Sanitary Sewerage Gravity Service Laterals",
    "level": 4
  },
  {
    "code": "33 31 19",
    "label": "Small-Diameter Sanitary Sewerage Gravity Piping",
    "level": 4
  },
  {
    "code": "33 31 23",
    "label": "Sanitary Sewerage Force Main Piping",
    "level": 4
  },
  {
    "code": "33 31 26",
    "label": "Sanitary Pressure Sewer Piping",
    "level": 4
  },
  {
    "code": "33 31 29",
    "label": "STEP System Piping",
    "level": 4
  },
  {
    "code": "33 32 00",
    "label": "Sanitary Sewerage Equipment",
    "level": 3
  },
  {
    "code": "33 32 11",
    "label": "Field-Erected Wastewater Pumping Stations",
    "level": 4
  },
  {
    "code": "33 32 13",
    "label": "Packaged Wastewater Pumping Stations",
    "level": 4
  },
  {
    "code": "33 32 16",
    "label": "Packaged Wastewater Grinder Pump Assemblies",
    "level": 4
  },
  {
    "code": "33 32 19",
    "label": "Septic Tank Effluent Pumps",
    "level": 4
  },
  {
    "code": "33 32 26",
    "label": "Pneumatic Sewage Ejectors",
    "level": 4
  },
  {
    "code": "33 32 33",
    "label": "Wastewater Collection Vacuum Stations",
    "level": 4
  },
  {
    "code": "33 32 36",
    "label": "Pneumatic Wastewater Vacuum Valve Sumps",
    "level": 4
  },
  {
    "code": "33 34 00",
    "label": "Onsite Wastewater Disposal",
    "level": 3
  },
  {
    "code": "33 34 13",
    "label": "Septic Tanks",
    "level": 4
  },
  {
    "code": "33 34 13.13",
    "label": "Concrete Septic Tanks",
    "level": 5
  },
  {
    "code": "33 34 13.23",
    "label": "Fiberglass Septic Tanks",
    "level": 5
  },
  {
    "code": "33 34 13.33",
    "label": "Polyethylene Septic Tanks",
    "level": 5
  },
  {
    "code": "33 34 16",
    "label": "Septic Tank Effluent Filters",
    "level": 4
  },
  {
    "code": "33 34 16.13",
    "label": "Septic Tank Gravity Effluent Filters",
    "level": 5
  },
  {
    "code": "33 34 16.16",
    "label": "Septic Tank Pressurized Effluent Filters",
    "level": 5
  },
  {
    "code": "33 34 19",
    "label": "Septic Tank Accessories",
    "level": 4
  },
  {
    "code": "33 34 23",
    "label": "Onsite Aerobic Equipment",
    "level": 4
  },
  {
    "code": "33 34 33",
    "label": "Onsite Intermittent Wastewater Filtration Systems",
    "level": 4
  },
  {
    "code": "33 34 36",
    "label": "Onsite Recirculating Wastewater Filtration Systems",
    "level": 4
  },
  {
    "code": "33 34 51",
    "label": "Drainage Field System",
    "level": 4
  },
  {
    "code": "33 34 53",
    "label": "Distribution Chambers",
    "level": 4
  },
  {
    "code": "33 34 53.13",
    "label": "Drainage Field Concrete Distribution Chambers",
    "level": 5
  },
  {
    "code": "33 34 53.23",
    "label": "Drainage Field Fiberglass Distribution Chambers",
    "level": 5
  },
  {
    "code": "33 34 53.33",
    "label": "Drainage Field Polyethylene Distribution Chambers",
    "level": 5
  },
  {
    "code": "33 34 56",
    "label": "Drainage Field Dosing Chambers",
    "level": 4
  },
  {
    "code": "33 34 57",
    "label": "Drainage Field Infiltration Chambers",
    "level": 4
  },
  {
    "code": "33 36 00",
    "label": "Wastewater Utility Storage Tanks",
    "level": 3
  },
  {
    "code": "33 36 23",
    "label": "Ground-Level Steel Wastewater Storage Tanks",
    "level": 4
  },
  {
    "code": "33 36 31",
    "label": "Ground-Level AWWA D110 Type I Prestressed Concrete Wastewater Storage Tanks",
    "level": 4
  },
  {
    "code": "33 36 32",
    "label": "Ground-Level AWWA D110 Type II Prestressed Concrete Wastewater Storage Tanks",
    "level": 4
  },
  {
    "code": "33 36 33",
    "label": "Ground-Level AWWA D110 Type III Prestressed Concrete Wastewater Storage Tanks",
    "level": 4
  },
  {
    "code": "33 36 36",
    "label": "Ground-Level Reinforced Concrete Wastewater Storage Tanks",
    "level": 4
  },
  {
    "code": "33 36 43",
    "label": "Underground Reinforced Concrete Wastewater Storage Tanks",
    "level": 4
  },
  {
    "code": "33 36 53",
    "label": "Wastewater Storage Tunnel Systems",
    "level": 4
  },
  {
    "code": "33 37 00",
    "label": "Overflow Control",
    "level": 3
  },
  {
    "code": "33 37 13",
    "label": "Bending Weirs",
    "level": 4
  },
  {
    "code": "33 37 16",
    "label": "Spring-loaded Weirs",
    "level": 4
  },
  {
    "code": "33 37 23",
    "label": "Flow Regulators",
    "level": 4
  },
  {
    "code": "33 37 33",
    "label": "Swirl Concentrators",
    "level": 4
  },
  {
    "code": "33 37 36",
    "label": "Vortex-Type Hydrodynamic Separators",
    "level": 4
  },
  {
    "code": "33 37 43",
    "label": "Netting Systems",
    "level": 4
  },
  {
    "code": "33 37 46",
    "label": "End-of-Pipe In-water Storage Systems",
    "level": 4
  },
  {
    "code": "33 40 00",
    "label": "Stormwater Utilities",
    "level": 2
  },
  {
    "code": "33 41 00",
    "label": "Subdrainage",
    "level": 3
  },
  {
    "code": "33 41 13",
    "label": "Foundation Drainage",
    "level": 4
  },
  {
    "code": "33 41 13.13",
    "label": "Foundation Drainage Piping",
    "level": 5
  },
  {
    "code": "33 41 13.16",
    "label": "Geocomposite Foundation Drainage",
    "level": 5
  },
  {
    "code": "33 41 16",
    "label": "Subdrainage Piping",
    "level": 4
  },
  {
    "code": "33 41 16.16",
    "label": "Geocomposite Subdrainage",
    "level": 5
  },
  {
    "code": "33 41 16.19",
    "label": "Pipe Underdrains",
    "level": 5
  },
  {
    "code": "33 41 19",
    "label": "Underslab Drainage",
    "level": 4
  },
  {
    "code": "33 41 19.13",
    "label": "Underslab Drainage Piping",
    "level": 5
  },
  {
    "code": "33 41 19.16",
    "label": "Geocomposite Underslab Drainage",
    "level": 5
  },
  {
    "code": "33 41 23",
    "label": "Drainage Layers",
    "level": 4
  },
  {
    "code": "33 41 23.16",
    "label": "Gravel Drainage Layers",
    "level": 5
  },
  {
    "code": "33 41 23.19",
    "label": "Geosynthetic Drainage Layers",
    "level": 5
  },
  {
    "code": "33 41 33",
    "label": "Retaining Wall Drainage",
    "level": 4
  },
  {
    "code": "33 41 43",
    "label": "Synthetic-Media French Drains",
    "level": 4
  },
  {
    "code": "33 42 00",
    "label": "Stormwater Conveyance",
    "level": 3
  },
  {
    "code": "33 42 11",
    "label": "Stormwater Gravity Piping",
    "level": 4
  },
  {
    "code": "33 42 13",
    "label": "Stormwater Culverts",
    "level": 4
  },
  {
    "code": "33 42 16",
    "label": "Stormwater Force Main Piping",
    "level": 4
  },
  {
    "code": "33 42 23",
    "label": "Headwalls and Endwalls for Stormwater Piping",
    "level": 4
  },
  {
    "code": "33 42 26",
    "label": "End Sections for Stormwater Piping",
    "level": 4
  },
  {
    "code": "33 42 26.11",
    "label": "Aluminum End Sections for Stormwater Piping",
    "level": 5
  },
  {
    "code": "33 42 26.13",
    "label": "Steel End Sections for Stormwater Piping",
    "level": 5
  },
  {
    "code": "33 42 26.16",
    "label": "Corrugated Metal End Sections for Stormwater Piping",
    "level": 5
  },
  {
    "code": "33 42 26.23",
    "label": "Concrete End Sections for Stormwater Piping",
    "level": 5
  },
  {
    "code": "33 42 31",
    "label": "Stormwater Area Drains and Inlets",
    "level": 4
  },
  {
    "code": "33 42 33",
    "label": "Stormwater Curbside Drains and Inlets",
    "level": 4
  },
  {
    "code": "33 42 36",
    "label": "Stormwater Trench Drains",
    "level": 4
  },
  {
    "code": "33 42 41",
    "label": "Gratings and Frames for Stormwater Drainage Inlets",
    "level": 4
  },
  {
    "code": "33 42 41.11",
    "label": "Aluminum Gratings and Frames for Stormwater Drainage inlets",
    "level": 5
  },
  {
    "code": "33 42 41.21",
    "label": "Brass Gratings and Frames for Stormwater Drainage inlets",
    "level": 5
  },
  {
    "code": "33 42 41.31",
    "label": "Cast-Iron Gratings and Frames for Stormwater Drainage Inlets",
    "level": 5
  },
  {
    "code": "33 42 41.41",
    "label": "Chrome Gratings and Frames for Stormwater Drainage inlets",
    "level": 5
  },
  {
    "code": "33 42 41.51",
    "label": "Steel Gratings and Frames for Stormwater Drainage Inlets",
    "level": 5
  },
  {
    "code": "33 42 41.61",
    "label": "Fiberglass Gratings and Frames for Stormwater Drainage Inlets",
    "level": 5
  },
  {
    "code": "33 44 00",
    "label": "Stormwater Utility Equipment",
    "level": 3
  },
  {
    "code": "33 44 11",
    "label": "Field-Erected Stormwater Pumping Stations",
    "level": 4
  },
  {
    "code": "33 44 13",
    "label": "Packaged Stormwater Pumping Stations",
    "level": 4
  },
  {
    "code": "33 44 21",
    "label": "Stormwater Downspout Filters",
    "level": 4
  },
  {
    "code": "33 44 23",
    "label": "Inline Stormwater Filters",
    "level": 4
  },
  {
    "code": "33 44 26",
    "label": "Stormwater Catch Basin Insert Filters",
    "level": 4
  },
  {
    "code": "33 44 27",
    "label": "Stormwater Trench Drain Insert Filters",
    "level": 4
  },
  {
    "code": "33 44 31",
    "label": "Stormwater Membrane Filtration",
    "level": 4
  },
  {
    "code": "33 44 33",
    "label": "Stormwater Trash and Debris Guards",
    "level": 4
  },
  {
    "code": "33 44 36",
    "label": "Oil and Stormwater Separators",
    "level": 4
  },
  {
    "code": "33 44 43",
    "label": "Vortex-Type Hydrodynamic Separators",
    "level": 4
  },
  {
    "code": "33 44 53",
    "label": "Stormwater Area Drainage Pop-up Relief Valves",
    "level": 4
  },
  {
    "code": "33 46 00",
    "label": "Stormwater Management",
    "level": 3
  },
  {
    "code": "33 46 11",
    "label": "Stormwater Ponds",
    "level": 4
  },
  {
    "code": "33 46 11.13",
    "label": "Stormwater Detention Ponds",
    "level": 5
  },
  {
    "code": "33 46 11.23",
    "label": "Stormwater Retention Ponds",
    "level": 5
  },
  {
    "code": "33 46 11.33",
    "label": "Fire Protection Ponds",
    "level": 5
  },
  {
    "code": "33 46 11.43",
    "label": "Cooling Water Ponds",
    "level": 5
  },
  {
    "code": "33 46 16",
    "label": "Outlet Structures for Stormwater Ponds",
    "level": 4
  },
  {
    "code": "33 46 16.13",
    "label": "Stormwater Pond Concrete Outlet Structures",
    "level": 5
  },
  {
    "code": "33 46 16.23",
    "label": "Stormwater Pond Fiberglass Outlet Structures",
    "level": 5
  },
  {
    "code": "33 46 23",
    "label": "Modular Buried Stormwater Storage Units",
    "level": 4
  },
  {
    "code": "33 46 39",
    "label": "Rain Barrels",
    "level": 4
  },
  {
    "code": "33 46 53",
    "label": "Stormwater Leaching Pits",
    "level": 4
  },
  {
    "code": "33 46 56",
    "label": "Tree Box Filters",
    "level": 4
  },
  {
    "code": "33 46 59",
    "label": "Concrete Modular Biofiltration Cells",
    "level": 4
  },
  {
    "code": "33 46 63",
    "label": "Swale Protection Prefilters",
    "level": 4
  },
  {
    "code": "33 50 00",
    "label": "Hydrocarbon Utilities",
    "level": 2
  },
  {
    "code": "33 51 00",
    "label": "Hydrocarbon Sources",
    "level": 3
  },
  {
    "code": "33 51 13",
    "label": "Appraisal Wells for Liquid Hydrocarbons",
    "level": 4
  },
  {
    "code": "33 51 16",
    "label": "Appraisal Wells for Gaseous Hydrocarbons",
    "level": 4
  },
  {
    "code": "33 51 23",
    "label": "Production Wells for Liquid Hydrocarbons",
    "level": 4
  },
  {
    "code": "33 51 26",
    "label": "Production Wells for Gaseous Hydrocarbons",
    "level": 4
  },
  {
    "code": "33 51 33",
    "label": "Liquid Injection Wells",
    "level": 4
  },
  {
    "code": "33 51 36",
    "label": "Gas Injection Wells",
    "level": 4
  },
  {
    "code": "33 51 39",
    "label": "Monitoring Wells",
    "level": 4
  },
  {
    "code": "33 51 53",
    "label": "Reciprocating Pumpjack",
    "level": 4
  },
  {
    "code": "33 51 56",
    "label": "Submersible Liquid Hydrocarbon Pumps",
    "level": 4
  },
  {
    "code": "33 52 00",
    "label": "Hydrocarbon Transmission and Distribution",
    "level": 3
  },
  {
    "code": "33 52 13",
    "label": "Liquid Hydrocarbon Piping",
    "level": 4
  },
  {
    "code": "33 52 16",
    "label": "Gas Hydrocarbon Piping",
    "level": 4
  },
  {
    "code": "33 52 16.13",
    "label": "Steel Natural Gas Piping",
    "level": 5
  },
  {
    "code": "33 52 16.23",
    "label": "Medium Density Polyethylene Piping for Natural Gas",
    "level": 5
  },
  {
    "code": "33 52 16.26",
    "label": "High Density Polyethylene Piping for Natural Gas",
    "level": 5
  },
  {
    "code": "33 52 19",
    "label": "Hydrocarbon Piping Handling",
    "level": 4
  },
  {
    "code": "33 52 19.13",
    "label": "Hydrocarbon Piping Stringing, Storing, and Stacking",
    "level": 5
  },
  {
    "code": "33 52 23",
    "label": "Hydrocarbon Piping Welding",
    "level": 4
  },
  {
    "code": "33 52 23.13",
    "label": "Liquid Hydrocarbon Piping Welding",
    "level": 5
  },
  {
    "code": "33 52 23.16",
    "label": "Gas Hydrocarbon Piping Welding",
    "level": 5
  },
  {
    "code": "33 52 26",
    "label": "Hydrocarbon Piping Pigging",
    "level": 4
  },
  {
    "code": "33 52 26.13",
    "label": "Hydrocarbon Piping Pig Launchers",
    "level": 5
  },
  {
    "code": "33 52 26.16",
    "label": "Hydrocarbon Piping Pig Receivers",
    "level": 5
  },
  {
    "code": "33 52 26.23",
    "label": "Pigs for Hydrocarbon Piping",
    "level": 5
  },
  {
    "code": "33 53 00",
    "label": "Hydrocarbon Utility Pressure Regulation",
    "level": 3
  },
  {
    "code": "33 53 13",
    "label": "Liquid Hydrocarbon Pressure Regulation",
    "level": 4
  },
  {
    "code": "33 53 16",
    "label": "Gas Hydrocarbon Pressure Regulation",
    "level": 4
  },
  {
    "code": "33 54 00",
    "label": "Hydrocarbon Utility Safety Equipment",
    "level": 3
  },
  {
    "code": "33 54 13",
    "label": "Liquid Hydrocarbon Leak Detection Equipment",
    "level": 4
  },
  {
    "code": "33 54 16",
    "label": "Gas Hydrocarbon Leak Detection Equipment",
    "level": 4
  },
  {
    "code": "33 54 23",
    "label": "Hydrocarbon Pipeline Venting",
    "level": 4
  },
  {
    "code": "33 54 23.13",
    "label": "Liquid Hydrocarbon Pipeline Venting",
    "level": 5
  },
  {
    "code": "33 54 23.16",
    "label": "Gas Hydrocarbon Pipeline Venting",
    "level": 5
  },
  {
    "code": "33 56 00",
    "label": "Hydrocarbon Storage",
    "level": 3
  },
  {
    "code": "33 56 13",
    "label": "Aboveground Hydrocarbon Storage Tanks",
    "level": 4
  },
  {
    "code": "33 56 21",
    "label": "Ground-Level Fixed Roof Hydrocarbon Storage Tanks",
    "level": 4
  },
  {
    "code": "33 56 21.13",
    "label": "Double-Wall Ground-Level Fixed Roof Metallic Hydrocarbon Storage Tanks",
    "level": 5
  },
  {
    "code": "33 56 21.16",
    "label": "Single-Wall Ground-Level Fixed Roof Metallic Hydrocarbon Storage Tanks",
    "level": 5
  },
  {
    "code": "33 56 21.23",
    "label": "Single-Wall Ground-Level Fixed Roof Non-Metallic Hydrocarbon Storage Tanks",
    "level": 5
  },
  {
    "code": "33 56 21.26",
    "label": "Double-Wall Ground-Level Fixed Roof Non-Metallic Hydrocarbon Storage Tanks",
    "level": 5
  },
  {
    "code": "33 56 23",
    "label": "Ground-Level External Floating Roof Hydrocarbon Storage Tanks",
    "level": 4
  },
  {
    "code": "33 56 26",
    "label": "Ground-Level Internal Floating Roof Hydrocarbon Storage Tanks",
    "level": 4
  },
  {
    "code": "33 56 33",
    "label": "Underground Hydrocarbon Storage",
    "level": 4
  },
  {
    "code": "33 56 33.13",
    "label": "Double-Wall Metallic Underground Hydrocarbon Storage Tanks",
    "level": 5
  },
  {
    "code": "33 56 33.23",
    "label": "Single-Wall Metallic Underground Hydrocarbon Storage Tanks",
    "level": 5
  },
  {
    "code": "33 56 33.26",
    "label": "Single-Wall Non-Metallic Underground Hydrocarbon Storage Tanks",
    "level": 5
  },
  {
    "code": "33 56 33.29",
    "label": "Double-Wall Non-Metallic Underground Hydrocarbon Storage Tanks",
    "level": 5
  },
  {
    "code": "33 56 33.43",
    "label": "Underground Hydrocarbon Storage Caverns",
    "level": 5
  },
  {
    "code": "33 56 43",
    "label": "Aviation Fuel Storage Tanks",
    "level": 4
  },
  {
    "code": "33 56 43.13",
    "label": "Ground-Level Aviation Fuel Storage Tanks",
    "level": 5
  },
  {
    "code": "33 56 43.53",
    "label": "Underground Aviation Fuel Storage Tanks",
    "level": 5
  },
  {
    "code": "33 56 53",
    "label": "Compressed Gaseous Hydrocarbon Storage Tanks",
    "level": 4
  },
  {
    "code": "33 56 60",
    "label": "Moveable Hydrocarbon Storage Tanks",
    "level": 4
  },
  {
    "code": "33 56 93",
    "label": "Hydrocarbon Tank Linings",
    "level": 4
  },
  {
    "code": "33 56 96",
    "label": "Hydrocarbon Storage Tank Appurtenances",
    "level": 4
  },
  {
    "code": "33 57 00",
    "label": "Bulk Hydrocarbons Receiving/Dispensing Equipment",
    "level": 3
  },
  {
    "code": "33 59 00",
    "label": "Hydrocarbon Utility Metering",
    "level": 3
  },
  {
    "code": "33 59 11",
    "label": "Diaphragm/Bellows Hydrocarbons Meters",
    "level": 4
  },
  {
    "code": "33 59 13",
    "label": "Hydrocarbons Rotary Meters",
    "level": 4
  },
  {
    "code": "33 59 16",
    "label": "Hydrocarbons Turbine Meters",
    "level": 4
  },
  {
    "code": "33 59 19",
    "label": "Hydrocarbons Orifice Meters",
    "level": 4
  },
  {
    "code": "33 59 23",
    "label": "Hydrocarbons Ultrasonic Flow Meters",
    "level": 4
  },
  {
    "code": "33 59 26",
    "label": "Hydrocarbons Coriolis Meters",
    "level": 4
  },
  {
    "code": "33 59 43",
    "label": "Liquid Hydrocarbon Sampling and Quality Analysis Instrumentation",
    "level": 4
  },
  {
    "code": "33 59 46",
    "label": "Gas Hydrocarbon Sampling and Quality Analysis Instrumentation",
    "level": 4
  },
  {
    "code": "33 60 00",
    "label": "Hydronic and Steam Energy Utilities",
    "level": 2
  },
  {
    "code": "33 61 00",
    "label": "Hydronic Energy Distribution",
    "level": 3
  },
  {
    "code": "33 61 13",
    "label": "Buried Hydronic Energy Distribution",
    "level": 4
  },
  {
    "code": "33 61 23",
    "label": "Ground-Level Hydronic Energy Distribution",
    "level": 4
  },
  {
    "code": "33 61 27",
    "label": "Prefabricated Energy Distribution",
    "level": 4
  },
  {
    "code": "33 61 29",
    "label": "Pre-Engineered, Field-Assembled Energy Distribution",
    "level": 4
  },
  {
    "code": "33 61 33",
    "label": "Hydronic Energy Distribution Metering",
    "level": 4
  },
  {
    "code": "33 63 00",
    "label": "Steam Energy Distribution",
    "level": 3
  },
  {
    "code": "33 63 13",
    "label": "Underground Steam and Condensate Distribution Piping",
    "level": 4
  },
  {
    "code": "33 63 13.13",
    "label": "Shallow-Trench Steam Distribution Piping",
    "level": 5
  },
  {
    "code": "33 63 13.16",
    "label": "Utilidor Steam Distribution Piping",
    "level": 5
  },
  {
    "code": "33 63 23",
    "label": "Ground-Level Steam and Condensate Distribution Piping",
    "level": 4
  },
  {
    "code": "33 63 33",
    "label": "Steam Energy Distribution Metering",
    "level": 4
  },
  {
    "code": "33 70 00",
    "label": "Electrical Utilities",
    "level": 2
  },
  {
    "code": "33 71 00",
    "label": "Electrical Utility Transmission and Distribution",
    "level": 3
  },
  {
    "code": "33 71 13",
    "label": "Electrical Utility Towers",
    "level": 4
  },
  {
    "code": "33 71 13.13",
    "label": "Precast Concrete Electrical Utility Towers",
    "level": 5
  },
  {
    "code": "33 71 13.23",
    "label": "Steel Electrical Utility Towers",
    "level": 5
  },
  {
    "code": "33 71 13.33",
    "label": "Wood Electrical Utility Towers",
    "level": 5
  },
  {
    "code": "33 71 16",
    "label": "Electrical Poles",
    "level": 4
  },
  {
    "code": "33 71 16.13",
    "label": "Precast Concrete Electrical Utility Poles",
    "level": 5
  },
  {
    "code": "33 71 16.23",
    "label": "Steel Electrical Utility Poles",
    "level": 5
  },
  {
    "code": "33 71 16.33",
    "label": "Wood Electrical Utility Poles",
    "level": 5
  },
  {
    "code": "33 71 19",
    "label": "Electrical Underground Ducts, Ductbanks,and Manholes",
    "level": 4
  },
  {
    "code": "33 71 19.13",
    "label": "Electrical Manholes and Handholes",
    "level": 5
  },
  {
    "code": "33 71 19.23",
    "label": "Trenched Electrical Underground Duct and Ductbanks",
    "level": 5
  },
  {
    "code": "33 71 19.33",
    "label": "Trenchless Electrical Underground Duct and Ductbanks",
    "level": 5
  },
  {
    "code": "33 71 23",
    "label": "Insulators and Fittings",
    "level": 4
  },
  {
    "code": "33 71 23.13",
    "label": "Suspension Insulators",
    "level": 5
  },
  {
    "code": "33 71 23.16",
    "label": "Post Insulators",
    "level": 5
  },
  {
    "code": "33 71 23.23",
    "label": "Potheads",
    "level": 5
  },
  {
    "code": "33 71 26",
    "label": "Transmission and Distribution Equipment",
    "level": 4
  },
  {
    "code": "33 71 26.13",
    "label": "Capacitor Banks",
    "level": 5
  },
  {
    "code": "33 71 26.16",
    "label": "Coupling Capacitors",
    "level": 5
  },
  {
    "code": "33 71 26.23",
    "label": "Current Transformers",
    "level": 5
  },
  {
    "code": "33 71 26.26",
    "label": "Potential Transformers",
    "level": 5
  },
  {
    "code": "33 71 36",
    "label": "Extra-High-Voltage Transmission Wiring",
    "level": 4
  },
  {
    "code": "33 71 36.13",
    "label": "Overhead Extra-High-Voltage Transmission Wiring",
    "level": 5
  },
  {
    "code": "33 71 39",
    "label": "High-Voltage Transmission Wiring",
    "level": 4
  },
  {
    "code": "33 71 39.13",
    "label": "Overhead High-Voltage Transmission Wiring",
    "level": 5
  },
  {
    "code": "33 71 39.23",
    "label": "Underground High-Voltage Transmission Wiring",
    "level": 5
  },
  {
    "code": "33 71 39.33",
    "label": "Underwater High-Voltage Transmission Wiring",
    "level": 5
  },
  {
    "code": "33 71 49",
    "label": "Medium-Voltage Transmission Wiring",
    "level": 4
  },
  {
    "code": "33 71 49.13",
    "label": "Overhead Medium-Voltage Transmission Wiring",
    "level": 5
  },
  {
    "code": "33 71 49.23",
    "label": "Underground Medium-Voltage Transmission Wiring",
    "level": 5
  },
  {
    "code": "33 71 49.33",
    "label": "Underwater Medium-Voltage Transmission Wiring",
    "level": 5
  },
  {
    "code": "33 71 53",
    "label": "Direct-Current Transmission",
    "level": 4
  },
  {
    "code": "33 71 73",
    "label": "Electrical Utility Services",
    "level": 4
  },
  {
    "code": "33 71 83",
    "label": "Transmission and Distribution Specialties",
    "level": 4
  },
  {
    "code": "33 72 00",
    "label": "Utility Substations",
    "level": 3
  },
  {
    "code": "33 72 13",
    "label": "Deadend Structures",
    "level": 4
  },
  {
    "code": "33 72 23",
    "label": "Structural Bus Supports",
    "level": 4
  },
  {
    "code": "33 72 23.13",
    "label": "Bus Support Insulators",
    "level": 5
  },
  {
    "code": "33 72 26",
    "label": "Substation Bus Assemblies",
    "level": 4
  },
  {
    "code": "33 72 26.13",
    "label": "Aluminum Substation Bus Assemblies",
    "level": 5
  },
  {
    "code": "33 72 26.16",
    "label": "Copper Substation Bus Assemblies",
    "level": 5
  },
  {
    "code": "33 72 33",
    "label": "Control House Equipment",
    "level": 4
  },
  {
    "code": "33 72 33.13",
    "label": "Relays",
    "level": 5
  },
  {
    "code": "33 72 33.16",
    "label": "Substation Control Panels",
    "level": 5
  },
  {
    "code": "33 72 33.23",
    "label": "Power-Line Carriers",
    "level": 5
  },
  {
    "code": "33 72 33.26",
    "label": "Substation Metering",
    "level": 5
  },
  {
    "code": "33 72 33.43",
    "label": "Substation DC Supply",
    "level": 5
  },
  {
    "code": "33 72 43",
    "label": "Substation Control Wiring",
    "level": 4
  },
  {
    "code": "33 72 53",
    "label": "Shunt Reactors",
    "level": 4
  },
  {
    "code": "33 72 63",
    "label": "Substation Disconnect Switches",
    "level": 4
  },
  {
    "code": "33 72 63.13",
    "label": "Vertical Break Disconnect Switches",
    "level": 5
  },
  {
    "code": "33 72 63.16",
    "label": "Double End Break Disconnect Switches",
    "level": 5
  },
  {
    "code": "33 72 63.19",
    "label": "Double End Break (Vee) Disconnect Switches",
    "level": 5
  },
  {
    "code": "33 72 63.21",
    "label": "Center Break Disconnect Switches",
    "level": 5
  },
  {
    "code": "33 72 63.23",
    "label": "Center Break (Vee) Disconnect Switches",
    "level": 5
  },
  {
    "code": "33 72 63.26",
    "label": "Single Side Break Disconnect Switches",
    "level": 5
  },
  {
    "code": "33 72 63.27",
    "label": "Vertical Reach Disconnect Switches",
    "level": 5
  },
  {
    "code": "33 72 63.29",
    "label": "Grounding for Substation Disconnect Switches",
    "level": 5
  },
  {
    "code": "33 72 63.31",
    "label": "Hook Sticks",
    "level": 5
  },
  {
    "code": "33 73 00",
    "label": "Utility Transformers",
    "level": 3
  },
  {
    "code": "33 73 13",
    "label": "Liquid-Filled Utility Transformers",
    "level": 4
  },
  {
    "code": "33 73 23",
    "label": "Dry-Type Utility Transformers",
    "level": 4
  },
  {
    "code": "33 74 00",
    "label": "Extra High Voltage (EHV) Switchgear and protection devices",
    "level": 3
  },
  {
    "code": "33 74 13",
    "label": "Air EHV Circuit Breaker",
    "level": 4
  },
  {
    "code": "33 74 16",
    "label": "Oil EHV Circuit Breaker",
    "level": 4
  },
  {
    "code": "33 74 19",
    "label": "Gas EHV Circuit Breaker",
    "level": 4
  },
  {
    "code": "33 74 30",
    "label": "EHV Disconnect switch",
    "level": 4
  },
  {
    "code": "33 74 36",
    "label": "EHV Utility Fuses",
    "level": 4
  },
  {
    "code": "33 74 39",
    "label": "EHV Surge Arresters",
    "level": 4
  },
  {
    "code": "33 74 40",
    "label": "EHV Rod Gap",
    "level": 4
  },
  {
    "code": "33 74 43",
    "label": "EVH Shunt Reactors",
    "level": 4
  },
  {
    "code": "33 74 43.13",
    "label": "EHV Shunt Reactor Banks",
    "level": 5
  },
  {
    "code": "33 74 43.16",
    "label": "EHV Current Limiting Reactors",
    "level": 5
  },
  {
    "code": "33 75 00",
    "label": "High-Voltage Switchgear and Protection Devices",
    "level": 3
  },
  {
    "code": "33 75 13",
    "label": "Air High-Voltage Circuit Breaker",
    "level": 4
  },
  {
    "code": "33 75 16",
    "label": "Oil High-Voltage Circuit Breaker",
    "level": 4
  },
  {
    "code": "33 75 19",
    "label": "Gas High-Voltage Circuit Breaker",
    "level": 4
  },
  {
    "code": "33 75 23",
    "label": "Vacuum High-Voltage Circuit Breaker",
    "level": 4
  },
  {
    "code": "33 75 30",
    "label": "High-Voltage Disconnect Switch",
    "level": 4
  },
  {
    "code": "33 75 36",
    "label": "High-Voltage Utility Fuses",
    "level": 4
  },
  {
    "code": "33 75 39",
    "label": "High-Voltage Surge Arresters",
    "level": 4
  },
  {
    "code": "33 75 40",
    "label": "High-Voltage Rod Gap",
    "level": 4
  },
  {
    "code": "33 77 00",
    "label": "Medium-Voltage Utility Switchgear and Protection Devices",
    "level": 3
  },
  {
    "code": "33 77 13",
    "label": "Air Medium-Voltage Circuit Breaker",
    "level": 4
  },
  {
    "code": "33 77 16",
    "label": "Oil Medium-Voltage Circuit Breaker",
    "level": 4
  },
  {
    "code": "33 77 19",
    "label": "Gas Medium-Voltage Circuit Breaker",
    "level": 4
  },
  {
    "code": "33 77 23",
    "label": "Vacuum Medium-Voltage Circuit Breaker",
    "level": 4
  },
  {
    "code": "33 77 26",
    "label": "Medium-Voltage Utility Fusible Interrupter Switchgear",
    "level": 4
  },
  {
    "code": "33 77 30",
    "label": "Medium-Voltage Disconnect Switch",
    "level": 4
  },
  {
    "code": "33 77 33",
    "label": "Medium-Voltage Utility Cutouts",
    "level": 4
  },
  {
    "code": "33 77 36",
    "label": "Medium-Voltage Utility Fuses",
    "level": 4
  },
  {
    "code": "33 77 39",
    "label": "Medium-Voltage Utility Surge Arresters",
    "level": 4
  },
  {
    "code": "33 77 40",
    "label": "Medium-Voltage Rod Gap",
    "level": 4
  },
  {
    "code": "33 77 53",
    "label": "Medium-Voltage Utility Reclosers",
    "level": 4
  },
  {
    "code": "33 78 00",
    "label": "Substation Converter Stations",
    "level": 3
  },
  {
    "code": "33 79 00",
    "label": "Site Grounding",
    "level": 3
  },
  {
    "code": "33 79 13",
    "label": "Site Improvement Grounding",
    "level": 4
  },
  {
    "code": "33 79 13.13",
    "label": "Fence Grounding",
    "level": 5
  },
  {
    "code": "33 79 16",
    "label": "Tower Grounding",
    "level": 4
  },
  {
    "code": "33 79 16.13",
    "label": "Communications Tower Grounding",
    "level": 5
  },
  {
    "code": "33 79 16.16",
    "label": "Antenna Tower Grounding",
    "level": 5
  },
  {
    "code": "33 79 19",
    "label": "Utilities Grounding",
    "level": 4
  },
  {
    "code": "33 79 19.13",
    "label": "Electrical Utilities Grounding",
    "level": 5
  },
  {
    "code": "33 79 19.16",
    "label": "Communications Utilities Grounding",
    "level": 5
  },
  {
    "code": "33 79 23",
    "label": "Utility Substation Grounding",
    "level": 4
  },
  {
    "code": "33 79 83",
    "label": "Site Grounding Conductors",
    "level": 4
  },
  {
    "code": "33 79 93",
    "label": "Site Lightning Protection",
    "level": 4
  },
  {
    "code": "33 79 93.13",
    "label": "Lightning Arrestors",
    "level": 5
  },
  {
    "code": "33 79 93.16",
    "label": "Lightning Strike Counters",
    "level": 5
  },
  {
    "code": "33 79 93.19",
    "label": "Lightning Strike Warning Devices",
    "level": 5
  },
  {
    "code": "33 80 00",
    "label": "Communications Utilities",
    "level": 2
  },
  {
    "code": "33 81 00",
    "label": "Communications Structures",
    "level": 3
  },
  {
    "code": "33 81 13",
    "label": "Monopole Communications Towers",
    "level": 4
  },
  {
    "code": "33 81 16",
    "label": "Lattice Communications Towers",
    "level": 4
  },
  {
    "code": "33 81 19",
    "label": "Guyed Communications Towers",
    "level": 4
  },
  {
    "code": "33 81 21",
    "label": "Concealed Communications Towers",
    "level": 4
  },
  {
    "code": "33 81 23",
    "label": "Broadcast Communications Towers",
    "level": 4
  },
  {
    "code": "33 81 27",
    "label": "Aerial Cable Installation Hardware",
    "level": 4
  },
  {
    "code": "33 81 29",
    "label": "Communications Vaults, Pedestals, and Enclosures",
    "level": 4
  },
  {
    "code": "33 81 63",
    "label": "Cell Site Shelter Equipment",
    "level": 4
  },
  {
    "code": "33 81 63.16",
    "label": "DC Rectifiers",
    "level": 5
  },
  {
    "code": "33 81 63.19",
    "label": "Backup Batteries",
    "level": 5
  },
  {
    "code": "33 81 63.23",
    "label": "Baseband Microwave Processing",
    "level": 5
  },
  {
    "code": "33 81 63.26",
    "label": "Base Station Transceivers",
    "level": 5
  },
  {
    "code": "33 81 63.43",
    "label": "Remote Monitoring",
    "level": 5
  },
  {
    "code": "33 82 00",
    "label": "Communications Transmission and Distribution",
    "level": 3
  },
  {
    "code": "33 82 13",
    "label": "Copper Communications Transmission and Distribution Cabling",
    "level": 4
  },
  {
    "code": "33 82 13.13",
    "label": "Copper Splicing and Terminations",
    "level": 5
  },
  {
    "code": "33 82 23",
    "label": "Optical Fiber Communications Transmission and Distribution Cabling",
    "level": 4
  },
  {
    "code": "33 82 23.13",
    "label": "Optical Fiber Splicing and Terminations",
    "level": 5
  },
  {
    "code": "33 82 33",
    "label": "Coaxial Communications Transmission and Distribution Cabling",
    "level": 4
  },
  {
    "code": "33 82 33.13",
    "label": "Coaxial Splicing and Terminations",
    "level": 5
  },
  {
    "code": "33 82 43",
    "label": "Grounding and Bonding for Communications Transmission and Distribution",
    "level": 4
  },
  {
    "code": "33 82 46",
    "label": "Cable Pressurization Equipment",
    "level": 4
  },
  {
    "code": "33 82 53",
    "label": "Cleaning, Lubrication, and Restoration Chemicals",
    "level": 4
  },
  {
    "code": "33 82 63",
    "label": "Shelter Equipment",
    "level": 4
  },
  {
    "code": "33 82 63.13",
    "label": "Transceivers",
    "level": 5
  },
  {
    "code": "33 82 63.16",
    "label": "Control Panels",
    "level": 5
  },
  {
    "code": "33 82 63.23",
    "label": "Power-Line Carriers",
    "level": 5
  },
  {
    "code": "33 82 63.43",
    "label": "Backup Batteries",
    "level": 5
  },
  {
    "code": "33 83 00",
    "label": "Wireless Communications Transmission and Distribution",
    "level": 3
  },
  {
    "code": "33 83 13",
    "label": "Laser Transmitters and Receivers",
    "level": 4
  },
  {
    "code": "33 83 16",
    "label": "Microwave Transmitters and Receivers",
    "level": 4
  },
  {
    "code": "33 83 17",
    "label": "Microwave Antennas",
    "level": 4
  },
  {
    "code": "33 83 17.13",
    "label": "Microwave Waveguides",
    "level": 5
  },
  {
    "code": "33 83 19",
    "label": "Infrared Transmitters and Receivers",
    "level": 4
  },
  {
    "code": "33 83 23",
    "label": "Radio Antennas",
    "level": 4
  },
  {
    "code": "34 00 00",
    "label": "Transportation",
    "level": 1
  },
  {
    "code": "34 01 00",
    "label": "Operation and Maintenance of Transportation",
    "level": 3
  },
  {
    "code": "34 01 13",
    "label": "Operation and Maintenance of Roadways",
    "level": 4
  },
  {
    "code": "34 01 23",
    "label": "Operation and Maintenance of Railways",
    "level": 4
  },
  {
    "code": "34 01 23.13",
    "label": "Track Removal and Salvage",
    "level": 5
  },
  {
    "code": "34 01 23.81",
    "label": "Track Crosstie Replacement",
    "level": 5
  },
  {
    "code": "34 01 33",
    "label": "Operation and Maintenance of Airfields",
    "level": 4
  },
  {
    "code": "34 01 43",
    "label": "Operation and Maintenance of Bridges",
    "level": 4
  },
  {
    "code": "34 05 00",
    "label": "Common Work Results for Transportation",
    "level": 3
  },
  {
    "code": "34 05 05",
    "label": "Selective Demolition for Transportation",
    "level": 4
  },
  {
    "code": "34 05 13",
    "label": "Common Work Results for Roadways",
    "level": 4
  },
  {
    "code": "34 05 23",
    "label": "Common Work Results for Railways",
    "level": 4
  },
  {
    "code": "34 05 33",
    "label": "Common Work Results for Airports",
    "level": 4
  },
  {
    "code": "34 05 43",
    "label": "Common Work Results for Bridges",
    "level": 4
  },
  {
    "code": "34 06 00",
    "label": "Schedules for Transportation",
    "level": 3
  },
  {
    "code": "34 06 13",
    "label": "Schedules for Roadways",
    "level": 4
  },
  {
    "code": "34 06 23",
    "label": "Schedules for Railways",
    "level": 4
  },
  {
    "code": "34 06 33",
    "label": "Schedules for Airfields",
    "level": 4
  },
  {
    "code": "34 06 43",
    "label": "Schedules for Bridges",
    "level": 4
  },
  {
    "code": "34 08 00",
    "label": "Commissioning of Transportation",
    "level": 3
  },
  {
    "code": "34 08 13",
    "label": "Commissioning of Roadways",
    "level": 4
  },
  {
    "code": "34 08 23",
    "label": "Commissioning of Railways",
    "level": 4
  },
  {
    "code": "34 08 33",
    "label": "Commissioning of Airfields",
    "level": 4
  },
  {
    "code": "34 08 43",
    "label": "Commissioning of Bridges",
    "level": 4
  },
  {
    "code": "34 10 00",
    "label": "Guideways/Railways",
    "level": 2
  },
  {
    "code": "34 11 00",
    "label": "Rail Tracks",
    "level": 3
  },
  {
    "code": "34 11 13",
    "label": "Track Rails",
    "level": 4
  },
  {
    "code": "34 11 13.13",
    "label": "Light Rail Track",
    "level": 5
  },
  {
    "code": "34 11 13.23",
    "label": "Heavy Rail Track",
    "level": 5
  },
  {
    "code": "34 11 16",
    "label": "Welded Track Rails",
    "level": 4
  },
  {
    "code": "34 11 16.13",
    "label": "In-Track Butt-Welded Track Rail",
    "level": 5
  },
  {
    "code": "34 11 16.16",
    "label": "Pressure-Welded Track Rail",
    "level": 5
  },
  {
    "code": "34 11 16.19",
    "label": "Thermite-Welded Track Rail",
    "level": 5
  },
  {
    "code": "34 11 19",
    "label": "Track Rail Joints",
    "level": 4
  },
  {
    "code": "34 11 23",
    "label": "Special Trackwork",
    "level": 4
  },
  {
    "code": "34 11 23.13",
    "label": "Ballasted Special Track Rail",
    "level": 5
  },
  {
    "code": "34 11 23.16",
    "label": "Direct-Fixation Track",
    "level": 5
  },
  {
    "code": "34 11 23.23",
    "label": "Running Rail",
    "level": 5
  },
  {
    "code": "34 11 23.26",
    "label": "Precurved Running Rail",
    "level": 5
  },
  {
    "code": "34 11 26",
    "label": "Ballasted Track Rail",
    "level": 4
  },
  {
    "code": "34 11 26.13",
    "label": "Track Rail Ballast",
    "level": 5
  },
  {
    "code": "34 11 26.16",
    "label": "Track Rail Subballast",
    "level": 5
  },
  {
    "code": "34 11 29",
    "label": "Embedded Track Rail",
    "level": 4
  },
  {
    "code": "34 11 33",
    "label": "Track Cross Ties",
    "level": 4
  },
  {
    "code": "34 11 33.13",
    "label": "Concrete Track Cross Ties",
    "level": 5
  },
  {
    "code": "34 11 33.16",
    "label": "Timber Track Cross Ties",
    "level": 5
  },
  {
    "code": "34 11 33.19",
    "label": "Resilient Track Cross Ties",
    "level": 5
  },
  {
    "code": "34 11 36",
    "label": "Track Rail Fasteners",
    "level": 4
  },
  {
    "code": "34 11 36.13",
    "label": "Direct-Fixation Fasteners",
    "level": 5
  },
  {
    "code": "34 11 39",
    "label": "Track Collector Pans",
    "level": 4
  },
  {
    "code": "34 11 39.13",
    "label": "Fiberglass Track Collector Pans",
    "level": 5
  },
  {
    "code": "34 11 93",
    "label": "Track Appurtenances and Accessories",
    "level": 4
  },
  {
    "code": "34 12 00",
    "label": "Monorails",
    "level": 3
  },
  {
    "code": "34 12 13",
    "label": "Elevated Monorails",
    "level": 4
  },
  {
    "code": "34 12 16",
    "label": "On-Grade Monorails",
    "level": 4
  },
  {
    "code": "34 12 19",
    "label": "Below-Grade Monorails",
    "level": 4
  },
  {
    "code": "34 12 23",
    "label": "Maglev Monorail",
    "level": 4
  },
  {
    "code": "34 12 63",
    "label": "Monorail Track",
    "level": 4
  },
  {
    "code": "34 13 00",
    "label": "Funiculars",
    "level": 3
  },
  {
    "code": "34 13 13",
    "label": "Inclined Railway",
    "level": 4
  },
  {
    "code": "34 14 00",
    "label": "Cable Transportation",
    "level": 3
  },
  {
    "code": "34 14 13",
    "label": "Aerial Tramways",
    "level": 4
  },
  {
    "code": "34 14 19",
    "label": "Gondolas",
    "level": 4
  },
  {
    "code": "34 14 26",
    "label": "Funitels",
    "level": 4
  },
  {
    "code": "34 14 33",
    "label": "Chairlifts",
    "level": 4
  },
  {
    "code": "34 14 39",
    "label": "Surface Lifts",
    "level": 4
  },
  {
    "code": "34 14 46",
    "label": "Ropeway Tows",
    "level": 4
  },
  {
    "code": "34 14 53",
    "label": "Cable Car Systems",
    "level": 4
  },
  {
    "code": "34 20 00",
    "label": "Traction Power",
    "level": 2
  },
  {
    "code": "34 21 00",
    "label": "Traction Power Distribution",
    "level": 3
  },
  {
    "code": "34 21 13",
    "label": "High Power Static Frequency Converters",
    "level": 4
  },
  {
    "code": "34 21 16",
    "label": "Traction Power Substations",
    "level": 4
  },
  {
    "code": "34 21 16.13",
    "label": "AC Traction Power Substations",
    "level": 5
  },
  {
    "code": "34 21 16.16",
    "label": "DC Traction Power Substations",
    "level": 5
  },
  {
    "code": "34 21 19",
    "label": "Traction Power Switchgear",
    "level": 4
  },
  {
    "code": "34 21 19.13",
    "label": "AC Traction Power Switchgear",
    "level": 5
  },
  {
    "code": "34 21 19.16",
    "label": "DC Traction Power Switchgear",
    "level": 5
  },
  {
    "code": "34 21 19.23",
    "label": "Frequency Changer",
    "level": 5
  },
  {
    "code": "34 21 23",
    "label": "Traction Power Transformer-Rectifier Units",
    "level": 4
  },
  {
    "code": "34 23 00",
    "label": "Overhead Traction Power",
    "level": 3
  },
  {
    "code": "34 23 13",
    "label": "Traction Power Poles",
    "level": 4
  },
  {
    "code": "34 23 16",
    "label": "Overhead Cable Suspension",
    "level": 4
  },
  {
    "code": "34 23 23",
    "label": "Overhead Traction Power Cables",
    "level": 4
  },
  {
    "code": "34 24 00",
    "label": "Third Rail Traction Power",
    "level": 3
  },
  {
    "code": "34 24 13",
    "label": "Bottom-Contact Third Rail",
    "level": 4
  },
  {
    "code": "34 24 16",
    "label": "Side-Contact Third Rail",
    "level": 4
  },
  {
    "code": "34 24 19",
    "label": "Top-Contact Third Rail",
    "level": 4
  },
  {
    "code": "34 40 00",
    "label": "Transportation Signaling and Control Equipment",
    "level": 2
  },
  {
    "code": "34 41 00",
    "label": "Roadway Signaling and Control Equipment",
    "level": 3
  },
  {
    "code": "34 41 13",
    "label": "Traffic Signals",
    "level": 4
  },
  {
    "code": "34 41 16",
    "label": "Traffic Control Equipment",
    "level": 4
  },
  {
    "code": "34 41 23",
    "label": "Roadway Monitoring Equipment",
    "level": 4
  },
  {
    "code": "34 41 33",
    "label": "In Roadway Warning Lights",
    "level": 4
  },
  {
    "code": "34 42 00",
    "label": "Railway Signaling and Control Equipment",
    "level": 3
  },
  {
    "code": "34 42 13",
    "label": "Railway Signals",
    "level": 4
  },
  {
    "code": "34 42 13.13",
    "label": "General Railway Signal Requirements",
    "level": 5
  },
  {
    "code": "34 42 13.16",
    "label": "Signal Solid State Coded Track Circuits",
    "level": 5
  },
  {
    "code": "34 42 16",
    "label": "Train Control Wires and Cables",
    "level": 4
  },
  {
    "code": "34 42 19",
    "label": "Vital Interlocking Logic Controllers",
    "level": 4
  },
  {
    "code": "34 42 23",
    "label": "Railway Control Equipment",
    "level": 4
  },
  {
    "code": "34 42 23.13",
    "label": "Mainline Train Control Room Equipment",
    "level": 5
  },
  {
    "code": "34 42 23.16",
    "label": "Yard Train Control Room Equipment",
    "level": 5
  },
  {
    "code": "34 42 23.19",
    "label": "Integrated Control Equipment",
    "level": 5
  },
  {
    "code": "34 42 23.23",
    "label": "Interlocking Railway Control Equipment",
    "level": 5
  },
  {
    "code": "34 42 26",
    "label": "Rail Network Equipment",
    "level": 4
  },
  {
    "code": "34 42 29",
    "label": "Station Agent Equipment",
    "level": 4
  },
  {
    "code": "34 42 33",
    "label": "Yard Management Equipment",
    "level": 4
  },
  {
    "code": "34 42 36",
    "label": "Supervisory Control and Data Acquisition",
    "level": 4
  },
  {
    "code": "34 43 00",
    "label": "Airfield Signaling and Control Equipment",
    "level": 3
  },
  {
    "code": "34 43 13",
    "label": "Airfield Signals and Lighting",
    "level": 4
  },
  {
    "code": "34 43 13.09",
    "label": "Airport Rotating Beacons",
    "level": 5
  },
  {
    "code": "34 43 13.10",
    "label": "Hazard Beacons",
    "level": 5
  },
  {
    "code": "34 43 13.11",
    "label": "Airport Beacon Towers",
    "level": 5
  },
  {
    "code": "34 43 13.12",
    "label": "Airport Obstruction Lights",
    "level": 5
  },
  {
    "code": "34 43 13.13",
    "label": "Airfield Runway Identification Lights",
    "level": 5
  },
  {
    "code": "34 43 13.16",
    "label": "Airfield Runway and Taxiway Inset Lighting",
    "level": 5
  },
  {
    "code": "34 43 13.19",
    "label": "Adhesive for Inset Lighting & Wiring",
    "level": 5
  },
  {
    "code": "34 43 13.23",
    "label": "Airfield Short-Approach Lighting Equipment",
    "level": 5
  },
  {
    "code": "34 43 13.26",
    "label": "Airfield Omni-Directional-Approach Lighting Equipment",
    "level": 5
  },
  {
    "code": "34 43 13.29",
    "label": "Airfield Low-Intensity-Approach Lighting Equipment",
    "level": 5
  },
  {
    "code": "34 43 13.33",
    "label": "Airfield High-Intensity-Approach Lighting Equipment",
    "level": 5
  },
  {
    "code": "34 43 13.36",
    "label": "Airfield Precision-Approach Path Indicator Equipment",
    "level": 5
  },
  {
    "code": "34 43 16",
    "label": "Airfield Landing Equipment",
    "level": 4
  },
  {
    "code": "34 43 16.13",
    "label": "Microwave Airfield Landing Equipment",
    "level": 5
  },
  {
    "code": "34 43 16.16",
    "label": "Instrument Airfield Landing Equipment",
    "level": 5
  },
  {
    "code": "34 43 16.19",
    "label": "Airfield Visual-Approach Slope Indicator Equipment",
    "level": 5
  },
  {
    "code": "34 43 19",
    "label": "Airfield Traffic Control Tower Equipment",
    "level": 4
  },
  {
    "code": "34 43 23",
    "label": "Weather Observation Equipment",
    "level": 4
  },
  {
    "code": "34 43 23.13",
    "label": "Automatic Weather Observation Equipment",
    "level": 5
  },
  {
    "code": "34 43 23.16",
    "label": "Airfield Wind Cones",
    "level": 5
  },
  {
    "code": "34 43 26",
    "label": "Airfield Control Equipment",
    "level": 4
  },
  {
    "code": "34 43 26.13",
    "label": "Airfield Lighting Control Equipment",
    "level": 5
  },
  {
    "code": "34 43 26.16",
    "label": "Airfield Lighting PLC Control Equipment",
    "level": 5
  },
  {
    "code": "34 43 26.19",
    "label": "Airfield Lighting Regulator Assembly",
    "level": 5
  },
  {
    "code": "34 48 00",
    "label": "Bridge Signaling and Control Equipment",
    "level": 3
  },
  {
    "code": "34 48 13",
    "label": "Operating Bridge Signals",
    "level": 4
  },
  {
    "code": "34 48 16",
    "label": "Operating Bridge Control Equipment",
    "level": 4
  },
  {
    "code": "34 50 00",
    "label": "Transportation Fare Collection Equipment",
    "level": 2
  },
  {
    "code": "34 52 00",
    "label": "Vehicle Fare Collection",
    "level": 3
  },
  {
    "code": "34 52 16",
    "label": "Vehicle Ticketing Equipment",
    "level": 4
  },
  {
    "code": "34 52 16.13",
    "label": "Vehicle Ticket Vending Machines",
    "level": 5
  },
  {
    "code": "34 52 26",
    "label": "Vehicle Fare Collection Equipment",
    "level": 4
  },
  {
    "code": "34 52 26.13",
    "label": "Vehicle Coin Fare Collection Equipment",
    "level": 5
  },
  {
    "code": "34 52 26.16",
    "label": "Vehicle Electronic Fare Collection Equipment",
    "level": 5
  },
  {
    "code": "34 52 33",
    "label": "Vehicle Fare Gates",
    "level": 4
  },
  {
    "code": "34 54 00",
    "label": "Passenger Fare Collection",
    "level": 3
  },
  {
    "code": "34 54 16",
    "label": "Passenger Ticketing Equipment",
    "level": 4
  },
  {
    "code": "34 54 16.13",
    "label": "Passenger Ticket Vending Machines",
    "level": 5
  },
  {
    "code": "34 54 16.16",
    "label": "Passenger Addfare Machines",
    "level": 5
  },
  {
    "code": "34 54 16.23",
    "label": "Passenger Intermodal Transfer Machines",
    "level": 5
  },
  {
    "code": "34 54 26",
    "label": "Passenger Fare Collection Equipment",
    "level": 4
  },
  {
    "code": "34 54 26.13",
    "label": "Passenger Coin Fare Collection Equipment",
    "level": 5
  },
  {
    "code": "34 54 26.16",
    "label": "Passenger Electronic Fare Collection Equipment",
    "level": 5
  },
  {
    "code": "34 54 33",
    "label": "Passenger Fare Gates",
    "level": 4
  },
  {
    "code": "34 70 00",
    "label": "Transportation Construction and Equipment",
    "level": 2
  },
  {
    "code": "34 71 00",
    "label": "Roadway Construction",
    "level": 3
  },
  {
    "code": "34 71 13",
    "label": "Vehicle Barriers",
    "level": 4
  },
  {
    "code": "34 71 13.13",
    "label": "Vehicle Median Barriers",
    "level": 5
  },
  {
    "code": "34 71 13.16",
    "label": "Vehicle Crash Barriers",
    "level": 5
  },
  {
    "code": "34 71 13.19",
    "label": "Vehicle Traffic Barriers",
    "level": 5
  },
  {
    "code": "34 71 13.26",
    "label": "Vehicle Guide Rails",
    "level": 5
  },
  {
    "code": "34 71 13.29",
    "label": "Vehicle Barrier Fenders",
    "level": 5
  },
  {
    "code": "34 71 16",
    "label": "Impact Attenuating Devices",
    "level": 4
  },
  {
    "code": "34 71 19",
    "label": "Vehicle Delineators",
    "level": 4
  },
  {
    "code": "34 71 19.13",
    "label": "Fixed Vehicle Delineators",
    "level": 5
  },
  {
    "code": "34 71 19.16",
    "label": "Flexible Vehicle Delineators",
    "level": 5
  },
  {
    "code": "34 72 00",
    "label": "Railway Construction",
    "level": 3
  },
  {
    "code": "34 72 13",
    "label": "Railway Line",
    "level": 4
  },
  {
    "code": "34 72 16",
    "label": "Railway Siding",
    "level": 4
  },
  {
    "code": "34 73 00",
    "label": "Airfield Construction",
    "level": 3
  },
  {
    "code": "34 73 13",
    "label": "Aircraft Tiedowns",
    "level": 4
  },
  {
    "code": "34 73 16",
    "label": "Airfield Grounding",
    "level": 4
  },
  {
    "code": "34 73 16.13",
    "label": "Aircraft Static Grounding",
    "level": 5
  },
  {
    "code": "34 73 19",
    "label": "Jet Blast Barriers",
    "level": 4
  },
  {
    "code": "34 73 23",
    "label": "Manufactured Airfield Control Towers",
    "level": 4
  },
  {
    "code": "34 73 26",
    "label": "Manufactured Helipads",
    "level": 4
  },
  {
    "code": "34 75 00",
    "label": "Roadway Equipment",
    "level": 3
  },
  {
    "code": "34 75 13",
    "label": "Operable Roadway Equipment",
    "level": 4
  },
  {
    "code": "34 75 13.13",
    "label": "Active Vehicle Barriers",
    "level": 5
  },
  {
    "code": "34 76 00",
    "label": "Railway Equipment",
    "level": 3
  },
  {
    "code": "34 76 13",
    "label": "Roadway Crossing Control Equipment",
    "level": 4
  },
  {
    "code": "34 77 00",
    "label": "Transportation Equipment",
    "level": 3
  },
  {
    "code": "34 77 13",
    "label": "Passenger Boarding Bridges",
    "level": 4
  },
  {
    "code": "34 77 13.13",
    "label": "Fixed Aircraft Passenger Boarding Bridges",
    "level": 5
  },
  {
    "code": "34 77 13.16",
    "label": "Movable Aircraft Passenger Boarding Bridges",
    "level": 5
  },
  {
    "code": "34 77 13.23",
    "label": "Ship Passenger Boarding Bridges",
    "level": 5
  },
  {
    "code": "34 77 33",
    "label": "Baggage Scanning Equipment",
    "level": 4
  },
  {
    "code": "34 77 36",
    "label": "Baggage Scales",
    "level": 4
  },
  {
    "code": "34 77 39",
    "label": "Baggage Conveying Equipment",
    "level": 4
  },
  {
    "code": "34 78 00",
    "label": "Weighing Equipment",
    "level": 3
  },
  {
    "code": "34 78 13",
    "label": "Truck Scales",
    "level": 4
  },
  {
    "code": "34 78 16",
    "label": "Weighbridges",
    "level": 4
  },
  {
    "code": "34 78 23",
    "label": "Railroad Car Scales",
    "level": 4
  },
  {
    "code": "34 78 33",
    "label": "Crane Scales",
    "level": 4
  },
  {
    "code": "34 80 00",
    "label": "Bridges",
    "level": 2
  },
  {
    "code": "34 81 00",
    "label": "Bridge Machinery",
    "level": 3
  },
  {
    "code": "34 81 13",
    "label": "Single-Swing Bridge Machinery",
    "level": 4
  },
  {
    "code": "34 81 16",
    "label": "Double-Swing Bridge Machinery",
    "level": 4
  },
  {
    "code": "34 81 19",
    "label": "Cantilever Bridge Machinery",
    "level": 4
  },
  {
    "code": "34 81 23",
    "label": "Lift Bridge Machinery",
    "level": 4
  },
  {
    "code": "34 81 26",
    "label": "Sliding Bridge Machinery",
    "level": 4
  },
  {
    "code": "34 81 29",
    "label": "Pontoon Bridge Machinery",
    "level": 4
  },
  {
    "code": "34 81 32",
    "label": "Bascule Bridge Machinery",
    "level": 4
  },
  {
    "code": "34 82 00",
    "label": "Bridge Specialties",
    "level": 3
  },
  {
    "code": "34 82 13",
    "label": "Bridge Vibration Dampers",
    "level": 4
  },
  {
    "code": "34 82 13.13",
    "label": "Visco Elastic Bridge Vibration Dampers",
    "level": 5
  },
  {
    "code": "34 82 13.16",
    "label": "Tuned-Mass Bridge Vibration Dampers",
    "level": 5
  },
  {
    "code": "34 82 19",
    "label": "Bridge Pier Protection",
    "level": 4
  },
  {
    "code": "34 82 19.13",
    "label": "Bridge Pier Ice Shields",
    "level": 5
  },
  {
    "code": "35 00 00",
    "label": "Waterway and Marine Construction",
    "level": 1
  },
  {
    "code": "35 01 00",
    "label": "Operation and Maintenance of Waterway and Marine Construction",
    "level": 3
  },
  {
    "code": "35 01 30",
    "label": "Operation and Maintenance of Coastal Construction",
    "level": 4
  },
  {
    "code": "35 01 40",
    "label": "Operation and Maintenance of Waterway Construction",
    "level": 4
  },
  {
    "code": "35 01 40.51",
    "label": "Waterway Dredging",
    "level": 5
  },
  {
    "code": "35 01 40.92",
    "label": "Preservation of Water Courses",
    "level": 5
  },
  {
    "code": "35 01 50",
    "label": "Operation and Maintenance of Marine Construction",
    "level": 4
  },
  {
    "code": "35 01 50.51",
    "label": "Marine Dredging",
    "level": 5
  },
  {
    "code": "35 01 50.71",
    "label": "Channel Excavation, Cleaning and Deepening",
    "level": 5
  },
  {
    "code": "35 01 70",
    "label": "Operation and Maintenance of Dams",
    "level": 4
  },
  {
    "code": "35 05 00",
    "label": "Common Work Results for Waterway and Marine Construction",
    "level": 3
  },
  {
    "code": "35 05 05",
    "label": "Selective Demolition for Waterway and Marine Construction",
    "level": 4
  },
  {
    "code": "35 05 30",
    "label": "Common Work Results for Coastal Construction",
    "level": 4
  },
  {
    "code": "35 05 40",
    "label": "Common Work Results for Waterway Construction",
    "level": 4
  },
  {
    "code": "35 05 50",
    "label": "Common Work Results for Marine Construction",
    "level": 4
  },
  {
    "code": "35 05 70",
    "label": "Common Work Results for Dams",
    "level": 4
  },
  {
    "code": "35 06 00",
    "label": "Schedules for Waterway and Marine Construction",
    "level": 3
  },
  {
    "code": "35 06 30",
    "label": "Schedules for Coastal Construction",
    "level": 4
  },
  {
    "code": "35 06 40",
    "label": "Schedules for Waterway Construction",
    "level": 4
  },
  {
    "code": "35 06 50",
    "label": "Schedules for Marine Construction",
    "level": 4
  },
  {
    "code": "35 06 70",
    "label": "Schedules for Dams",
    "level": 4
  },
  {
    "code": "35 08 00",
    "label": "Commissioning of Waterway and Marine Construction",
    "level": 3
  },
  {
    "code": "35 08 30",
    "label": "Commissioning of Coastal Construction",
    "level": 4
  },
  {
    "code": "35 08 40",
    "label": "Commissioning of Waterway Construction",
    "level": 4
  },
  {
    "code": "35 08 50",
    "label": "Commissioning of Marine Construction",
    "level": 4
  },
  {
    "code": "35 08 70",
    "label": "Commissioning of Dams",
    "level": 4
  },
  {
    "code": "35 10 00",
    "label": "Waterway and Marine Signaling and Control Equipment",
    "level": 2
  },
  {
    "code": "35 11 00",
    "label": "Signaling and Control Equipment for Waterways",
    "level": 3
  },
  {
    "code": "35 11 13",
    "label": "Signaling Equipment for Waterways",
    "level": 4
  },
  {
    "code": "35 11 53",
    "label": "Control Equipment for Waterways",
    "level": 4
  },
  {
    "code": "35 12 00",
    "label": "Marine Signaling and Control Equipment",
    "level": 3
  },
  {
    "code": "35 12 13",
    "label": "Marine Signaling Equipment",
    "level": 4
  },
  {
    "code": "35 12 13.13",
    "label": "Lighthouse Equipment",
    "level": 5
  },
  {
    "code": "35 12 33",
    "label": "Marine Navigation Equipment",
    "level": 4
  },
  {
    "code": "35 12 53",
    "label": "Marine Control Equipment",
    "level": 4
  },
  {
    "code": "35 13 00",
    "label": "Signaling and Control Equipment for Dams",
    "level": 3
  },
  {
    "code": "35 13 13",
    "label": "Signaling Equipment for Dams",
    "level": 4
  },
  {
    "code": "35 13 53",
    "label": "Control Equipment for Dams",
    "level": 4
  },
  {
    "code": "35 20 00",
    "label": "Waterway and Marine Construction and Equipment",
    "level": 2
  },
  {
    "code": "35 21 00",
    "label": "General Fabrications for Waterways",
    "level": 3
  },
  {
    "code": "35 21 13",
    "label": "Hydraulic Bifurcation Panels",
    "level": 4
  },
  {
    "code": "35 21 16",
    "label": "Hydraulic Bulkheads",
    "level": 4
  },
  {
    "code": "35 21 19",
    "label": "Hydraulic Manifolds",
    "level": 4
  },
  {
    "code": "35 21 23",
    "label": "Penstocks",
    "level": 4
  },
  {
    "code": "35 21 33",
    "label": "Trash Racks",
    "level": 4
  },
  {
    "code": "35 21 36",
    "label": "Debris Cages",
    "level": 4
  },
  {
    "code": "35 22 00",
    "label": "Hydraulic Gates",
    "level": 3
  },
  {
    "code": "35 22 13",
    "label": "Spillway Crest Gates",
    "level": 4
  },
  {
    "code": "35 22 19",
    "label": "Hydraulic Head Gates",
    "level": 4
  },
  {
    "code": "35 22 26",
    "label": "Sluice Gates",
    "level": 4
  },
  {
    "code": "35 22 33",
    "label": "Miter Gates",
    "level": 4
  },
  {
    "code": "35 22 39",
    "label": "Sector Gates",
    "level": 4
  },
  {
    "code": "35 22 46",
    "label": "Tainter Gates",
    "level": 4
  },
  {
    "code": "35 22 53",
    "label": "Vertical Lift Hydraulic Gates",
    "level": 4
  },
  {
    "code": "35 22 59",
    "label": "Hydraulic Closure Gates",
    "level": 4
  },
  {
    "code": "35 22 63",
    "label": "Through-Levee Access Gates",
    "level": 4
  },
  {
    "code": "35 24 00",
    "label": "Dredging",
    "level": 3
  },
  {
    "code": "35 24 13",
    "label": "Suction Dredging",
    "level": 4
  },
  {
    "code": "35 24 13.11",
    "label": "Training Suction Dredging",
    "level": 5
  },
  {
    "code": "35 24 13.13",
    "label": "Cutter Suction Dredging",
    "level": 5
  },
  {
    "code": "35 24 13.16",
    "label": "Auger Suction Dredging",
    "level": 5
  },
  {
    "code": "35 24 13.23",
    "label": "Jet-Lift Dredging",
    "level": 5
  },
  {
    "code": "35 24 13.26",
    "label": "Air-Lift Dredging",
    "level": 5
  },
  {
    "code": "35 24 21",
    "label": "Bucket Dredging",
    "level": 4
  },
  {
    "code": "35 24 23",
    "label": "Clamshell Dredging",
    "level": 4
  },
  {
    "code": "35 24 26",
    "label": "Backhoe/Dipper Dredging",
    "level": 4
  },
  {
    "code": "35 24 33",
    "label": "Water Injection Dredging",
    "level": 4
  },
  {
    "code": "35 24 36",
    "label": "Pneumatic Dredging",
    "level": 4
  },
  {
    "code": "35 24 43",
    "label": "Bed-Levelling Dredging",
    "level": 4
  },
  {
    "code": "35 24 46",
    "label": "Krabbelaar Dredging",
    "level": 4
  },
  {
    "code": "35 24 53",
    "label": "Waterway Snag Removal",
    "level": 4
  },
  {
    "code": "35 30 00",
    "label": "Coastal Construction",
    "level": 2
  },
  {
    "code": "35 31 00",
    "label": "Shoreline Protection",
    "level": 3
  },
  {
    "code": "35 31 16",
    "label": "Seawalls",
    "level": 4
  },
  {
    "code": "35 31 16.13",
    "label": "Concrete Seawalls",
    "level": 5
  },
  {
    "code": "35 31 16.16",
    "label": "Segmental Seawalls",
    "level": 5
  },
  {
    "code": "35 31 16.19",
    "label": "Steel Sheet Piling Seawalls",
    "level": 5
  },
  {
    "code": "35 31 16.23",
    "label": "Timber Seawalls",
    "level": 5
  },
  {
    "code": "35 31 16.40",
    "label": "Stone Seawalls",
    "level": 5
  },
  {
    "code": "35 31 19",
    "label": "Revetments",
    "level": 4
  },
  {
    "code": "35 31 19.13",
    "label": "Sacked Cement-Sand Revetments",
    "level": 5
  },
  {
    "code": "35 31 19.16",
    "label": "Concrete Unit Masonry Revetments",
    "level": 5
  },
  {
    "code": "35 31 19.36",
    "label": "Gabion Revetments",
    "level": 5
  },
  {
    "code": "35 31 19.40",
    "label": "Stone Revetments",
    "level": 5
  },
  {
    "code": "35 31 23",
    "label": "Breakwaters",
    "level": 4
  },
  {
    "code": "35 31 23.13",
    "label": "Rubble Mound Breakwaters",
    "level": 5
  },
  {
    "code": "35 31 23.16",
    "label": "Precast Breakwater Modules",
    "level": 5
  },
  {
    "code": "35 31 26",
    "label": "Jetties",
    "level": 4
  },
  {
    "code": "35 31 26.13",
    "label": "Concrete Jetties",
    "level": 5
  },
  {
    "code": "35 31 26.16",
    "label": "Concrete Unit Masonry Jetties",
    "level": 5
  },
  {
    "code": "35 31 26.36",
    "label": "Gabion Jetties",
    "level": 5
  },
  {
    "code": "35 31 26.40",
    "label": "Stone Jetties",
    "level": 5
  },
  {
    "code": "35 31 29",
    "label": "Groins",
    "level": 4
  },
  {
    "code": "35 31 29.13",
    "label": "Concrete Groins",
    "level": 5
  },
  {
    "code": "35 31 29.16",
    "label": "Concrete Unit Masonry Groins",
    "level": 5
  },
  {
    "code": "35 31 29.26",
    "label": "Steel Groins",
    "level": 5
  },
  {
    "code": "35 31 29.36",
    "label": "Gabion Groins",
    "level": 5
  },
  {
    "code": "35 31 29.40",
    "label": "Stone Groins",
    "level": 5
  },
  {
    "code": "35 32 00",
    "label": "Artificial Reefs",
    "level": 3
  },
  {
    "code": "35 32 13",
    "label": "Scrap Material Artificial Reefs",
    "level": 4
  },
  {
    "code": "35 32 13.13",
    "label": "Scrap Concrete Artificial Reefs",
    "level": 5
  },
  {
    "code": "35 32 13.19",
    "label": "Scrap Steel Artificial Reefs",
    "level": 5
  },
  {
    "code": "35 32 13.33",
    "label": "Sunken Ship Artificial Reefs",
    "level": 5
  },
  {
    "code": "35 32 16",
    "label": "Constructed Artificial Reefs",
    "level": 4
  },
  {
    "code": "35 32 16.13",
    "label": "Constructed Concrete Artificial Reefs",
    "level": 5
  },
  {
    "code": "35 32 16.19",
    "label": "Constructed Steel Artificial Reefs",
    "level": 5
  },
  {
    "code": "35 40 00",
    "label": "Waterway Construction and Equipment",
    "level": 2
  },
  {
    "code": "35 41 00",
    "label": "Levees",
    "level": 3
  },
  {
    "code": "35 41 13",
    "label": "Landside Levee Berms",
    "level": 4
  },
  {
    "code": "35 41 13.13",
    "label": "Stability Landside Levee Berms",
    "level": 5
  },
  {
    "code": "35 41 13.16",
    "label": "Seepage Landside Levee Berms",
    "level": 5
  },
  {
    "code": "35 41 16",
    "label": "Levee Cutoff Trenches",
    "level": 4
  },
  {
    "code": "35 41 19",
    "label": "Levee Relief Wells",
    "level": 4
  },
  {
    "code": "35 42 00",
    "label": "Waterway Bank Protection",
    "level": 3
  },
  {
    "code": "35 42 13",
    "label": "Piling Bank Protection",
    "level": 4
  },
  {
    "code": "35 42 13.19",
    "label": "Steel Sheet Piling Bank Protection",
    "level": 5
  },
  {
    "code": "35 42 13.23",
    "label": "Timber Piling Bank Protection",
    "level": 5
  },
  {
    "code": "35 42 13.26",
    "label": "Plastic Piling Bank Protection",
    "level": 5
  },
  {
    "code": "35 42 29",
    "label": "Grout-Bag Bank Protection",
    "level": 4
  },
  {
    "code": "35 42 34",
    "label": "Soil Reinforcement Bank Protection",
    "level": 4
  },
  {
    "code": "35 42 35",
    "label": "Slope Protection Bank Protection",
    "level": 4
  },
  {
    "code": "35 42 36",
    "label": "Gabion Bank Protection",
    "level": 4
  },
  {
    "code": "35 42 37",
    "label": "Riprap Bank Protection",
    "level": 4
  },
  {
    "code": "35 42 53",
    "label": "Wall Bank Protection",
    "level": 4
  },
  {
    "code": "35 42 53.16",
    "label": "Concrete Unit Masonry Wall Bank Protection",
    "level": 5
  },
  {
    "code": "35 42 53.19",
    "label": "Segmental Wall Bank Protection",
    "level": 5
  },
  {
    "code": "35 42 53.40",
    "label": "Stone Wall Bank Protection",
    "level": 5
  },
  {
    "code": "35 43 00",
    "label": "Waterway Scour Protection",
    "level": 3
  },
  {
    "code": "35 43 29",
    "label": "Grout-Bag Scour Protection",
    "level": 4
  },
  {
    "code": "35 43 34",
    "label": "Soil Reinforcement Scour Protection",
    "level": 4
  },
  {
    "code": "35 43 35",
    "label": "Slope Protection Scour Protection",
    "level": 4
  },
  {
    "code": "35 43 36",
    "label": "Gabion Scour Protection",
    "level": 4
  },
  {
    "code": "35 43 37",
    "label": "Riprap Scour Protection",
    "level": 4
  },
  {
    "code": "35 43 53",
    "label": "Wall Scour Protection",
    "level": 4
  },
  {
    "code": "35 43 53.13",
    "label": "Concrete Unit Masonry Wall Scour Protection",
    "level": 5
  },
  {
    "code": "35 43 53.16",
    "label": "Segmental Wall Scour Protection",
    "level": 5
  },
  {
    "code": "35 43 53.40",
    "label": "Stone Wall Scour Protection",
    "level": 5
  },
  {
    "code": "35 49 00",
    "label": "Waterway Structures",
    "level": 3
  },
  {
    "code": "35 49 13",
    "label": "Floodwalls",
    "level": 4
  },
  {
    "code": "35 49 13.13",
    "label": "Concrete Floodwalls",
    "level": 5
  },
  {
    "code": "35 49 13.16",
    "label": "Masonry Floodwalls",
    "level": 5
  },
  {
    "code": "35 49 23",
    "label": "Waterway Locks",
    "level": 4
  },
  {
    "code": "35 49 23.13",
    "label": "Concrete Waterway Locks",
    "level": 5
  },
  {
    "code": "35 49 23.23",
    "label": "Piling Waterway Locks",
    "level": 5
  },
  {
    "code": "35 49 26",
    "label": "Floodgate Machinery",
    "level": 4
  },
  {
    "code": "35 50 00",
    "label": "Marine Construction and Equipment",
    "level": 2
  },
  {
    "code": "35 51 00",
    "label": "Floating Construction",
    "level": 3
  },
  {
    "code": "35 51 13",
    "label": "Floating Piers",
    "level": 4
  },
  {
    "code": "35 51 13.23",
    "label": "Floating Wood Piers",
    "level": 5
  },
  {
    "code": "35 51 13.26",
    "label": "Floating Plastic Piers",
    "level": 5
  },
  {
    "code": "35 51 23",
    "label": "Pontoons",
    "level": 4
  },
  {
    "code": "35 52 00",
    "label": "Offshore Platform Construction",
    "level": 3
  },
  {
    "code": "35 52 13",
    "label": "Fixed Offshore Platform Construction",
    "level": 4
  },
  {
    "code": "35 52 23",
    "label": "Semi-Submersible Offshore Platform Construction",
    "level": 4
  },
  {
    "code": "35 52 33",
    "label": "Floating Offshore Platform Construction",
    "level": 4
  },
  {
    "code": "35 53 00",
    "label": "Underwater Construction",
    "level": 3
  },
  {
    "code": "35 53 23",
    "label": "Underwater Harbor Deepening",
    "level": 4
  },
  {
    "code": "35 53 33",
    "label": "Underwater Pipeline Construction",
    "level": 4
  },
  {
    "code": "35 53 43",
    "label": "Underwater Foundation Construction",
    "level": 4
  },
  {
    "code": "35 53 53",
    "label": "Underwater Structures Construction",
    "level": 4
  },
  {
    "code": "35 53 63",
    "label": "Underwater Waterproofing",
    "level": 4
  },
  {
    "code": "35 59 00",
    "label": "Marine Specialties",
    "level": 3
  },
  {
    "code": "35 59 13",
    "label": "Marine Fenders",
    "level": 4
  },
  {
    "code": "35 59 13.13",
    "label": "Prestressed Concrete Marine Fender Piling",
    "level": 5
  },
  {
    "code": "35 59 13.16",
    "label": "Resilient Foam-Filled Marine Fenders",
    "level": 5
  },
  {
    "code": "35 59 13.19",
    "label": "Rubber Marine Fenders",
    "level": 5
  },
  {
    "code": "35 59 23",
    "label": "Buoys",
    "level": 4
  },
  {
    "code": "35 59 23.13",
    "label": "Mooring Buoys",
    "level": 5
  },
  {
    "code": "35 59 23.16",
    "label": "Anchor Pendant Buoys",
    "level": 5
  },
  {
    "code": "35 59 23.19",
    "label": "Navigation Buoys",
    "level": 5
  },
  {
    "code": "35 59 29",
    "label": "Mooring Devices",
    "level": 4
  },
  {
    "code": "35 59 29.13",
    "label": "Quick-Release Mooring Hooks",
    "level": 5
  },
  {
    "code": "35 59 29.16",
    "label": "Laser Docking Systems",
    "level": 5
  },
  {
    "code": "35 59 29.19",
    "label": "Capstans",
    "level": 5
  },
  {
    "code": "35 59 33",
    "label": "Marine Bollards and Cleats",
    "level": 4
  },
  {
    "code": "35 59 33.13",
    "label": "Cast-Steel Marine Bollards and Cleats",
    "level": 5
  },
  {
    "code": "35 59 33.16",
    "label": "Cast-Iron Marine Bollards and Cleats",
    "level": 5
  },
  {
    "code": "35 59 33.19",
    "label": "Stainless-Steel Marine Bollards and Cleats",
    "level": 5
  },
  {
    "code": "35 59 33.23",
    "label": "Plastic Marine Bollards and Cleats",
    "level": 5
  },
  {
    "code": "35 59 93",
    "label": "Marine Chain and Accessories",
    "level": 4
  },
  {
    "code": "35 59 93.13",
    "label": "Marine Chain",
    "level": 5
  },
  {
    "code": "35 59 93.16",
    "label": "Marine Shackles",
    "level": 5
  },
  {
    "code": "35 59 93.19",
    "label": "Marine Chain Tensioners",
    "level": 5
  },
  {
    "code": "35 70 00",
    "label": "Dam Construction and Equipment",
    "level": 2
  },
  {
    "code": "35 71 00",
    "label": "Gravity Dams",
    "level": 3
  },
  {
    "code": "35 71 13",
    "label": "Concrete Gravity Dams",
    "level": 4
  },
  {
    "code": "35 71 16",
    "label": "Masonry Gravity Dams",
    "level": 4
  },
  {
    "code": "35 71 19",
    "label": "Rockfill Gravity Dams",
    "level": 4
  },
  {
    "code": "35 72 00",
    "label": "Arch Dams",
    "level": 3
  },
  {
    "code": "35 72 13",
    "label": "Concrete Arch Dams",
    "level": 4
  },
  {
    "code": "35 73 00",
    "label": "Embankment Dams",
    "level": 3
  },
  {
    "code": "35 73 13",
    "label": "Earth Embankment Dam",
    "level": 4
  },
  {
    "code": "35 73 16",
    "label": "Rock Embankment Dams",
    "level": 4
  },
  {
    "code": "35 74 00",
    "label": "Buttress Dams",
    "level": 3
  },
  {
    "code": "35 74 13",
    "label": "Concrete Buttress Dams",
    "level": 4
  },
  {
    "code": "35 79 00",
    "label": "Auxiliary Dam Structures",
    "level": 3
  },
  {
    "code": "35 79 13",
    "label": "Fish Ladders",
    "level": 4
  },
  {
    "code": "35 79 13.13",
    "label": "Concrete Fish Ladders",
    "level": 5
  },
  {
    "code": "40 00 00",
    "label": "Process Interconnections",
    "level": 1
  },
  {
    "code": "40 01 00",
    "label": "Operation and Maintenance of Process Interconnections",
    "level": 3
  },
  {
    "code": "40 01 10",
    "label": "Operation and Maintenance of Gas and Vapor Process Piping",
    "level": 4
  },
  {
    "code": "40 01 20",
    "label": "Operation and Maintenance of Liquids Process Piping",
    "level": 4
  },
  {
    "code": "40 01 30",
    "label": "Operation and Maintenance of Solid and Mixed Materials Piping and Chutes",
    "level": 4
  },
  {
    "code": "40 01 40",
    "label": "Operation and Maintenance of Process Piping and Equipment Protection",
    "level": 4
  },
  {
    "code": "40 01 60",
    "label": "Operation and Maintenance of Process Control and Process Facility Enterprise Management Systems",
    "level": 4
  },
  {
    "code": "40 01 70",
    "label": "Operation and Maintenance of Instrumentation for Process Systems",
    "level": 4
  },
  {
    "code": "40 01 90",
    "label": "Operation and Maintenance of Primary Control Devices",
    "level": 4
  },
  {
    "code": "40 05 00",
    "label": "Common Work Results for Process Interconnections",
    "level": 3
  },
  {
    "code": "40 05 05",
    "label": "Exposed Piping Installation",
    "level": 4
  },
  {
    "code": "40 05 06",
    "label": "Couplings, Adapters, and Specials for Process Piping",
    "level": 4
  },
  {
    "code": "40 05 07",
    "label": "Hangers and Supports for Process Piping",
    "level": 4
  },
  {
    "code": "40 05 09",
    "label": "Wall Pipes, Floor Pipes, and Pipe Sleeves",
    "level": 4
  },
  {
    "code": "40 05 11",
    "label": "Aluminum Process Pipe",
    "level": 4
  },
  {
    "code": "40 05 12",
    "label": "Brass Process Pipe",
    "level": 4
  },
  {
    "code": "40 05 13",
    "label": "Bronze Process Pipe",
    "level": 4
  },
  {
    "code": "40 05 17",
    "label": "Copper Process Pipe and Tubing",
    "level": 4
  },
  {
    "code": "40 05 19",
    "label": "Ductile Iron Process Pipe",
    "level": 4
  },
  {
    "code": "40 05 21",
    "label": "High-Alloy Nickel Process Pipe and Tubing",
    "level": 4
  },
  {
    "code": "40 05 23",
    "label": "Stainless Steel Process Pipe and Tubing",
    "level": 4
  },
  {
    "code": "40 05 23.13",
    "label": "Duplex and Super-Duplex Stainless Steel Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 23.23",
    "label": "300- and 400-Series Stainless Steel Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 23.33",
    "label": "Special-Fabrication Stainless Steel Process Pipe and Tubing",
    "level": 5
  },
  {
    "code": "40 05 24",
    "label": "Steel Process Pipe",
    "level": 4
  },
  {
    "code": "40 05 24.13",
    "label": "Steel Pipe and Tubing for Air and Gas Service",
    "level": 5
  },
  {
    "code": "40 05 24.23",
    "label": "Steel Pipe for Water Service",
    "level": 5
  },
  {
    "code": "40 05 24.26",
    "label": "Steel Pipe and Tubing for Process Liquid Service",
    "level": 5
  },
  {
    "code": "40 05 24.33",
    "label": "Steel Pipe for Bulk Materials Conveyance",
    "level": 5
  },
  {
    "code": "40 05 26",
    "label": "Other Metals Process Pipe",
    "level": 4
  },
  {
    "code": "40 05 26.13",
    "label": "Titanium Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 26.23",
    "label": "Tantalum Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 26.33",
    "label": "Zirconium Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 31",
    "label": "Thermoplastic Process Pipe",
    "level": 4
  },
  {
    "code": "40 05 31.13",
    "label": "Polyvinyl Chloride Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 31.23",
    "label": "Chlorinated Polyvinyl Chloride Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 31.33",
    "label": "ABS Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 31.43",
    "label": "Polypropylene Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 31.53",
    "label": "PVDF Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 31.63",
    "label": "High-Purity Plastic Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 31.83",
    "label": "Flexible Plastic Tubing",
    "level": 5
  },
  {
    "code": "40 05 33",
    "label": "High-Density Polyethylene Process Pipe",
    "level": 4
  },
  {
    "code": "40 05 36",
    "label": "Fiberglass-Reinforced Plastic Process Pipe",
    "level": 4
  },
  {
    "code": "40 05 36.13",
    "label": "Fiberglass-Reinforced Plastic Pipe for Process Air, Gas, and Odor Service",
    "level": 5
  },
  {
    "code": "40 05 36.23",
    "label": "Fiberglass-Reinforced Plastic Pipe for Process Liquid Service",
    "level": 5
  },
  {
    "code": "40 05 37",
    "label": "Centrifugally Cast Fiberglass-Reinforced Polymer Mortar Process Pipe",
    "level": 4
  },
  {
    "code": "40 05 38",
    "label": "PTFE Process Pipe",
    "level": 4
  },
  {
    "code": "40 05 39",
    "label": "Concrete Pipe",
    "level": 4
  },
  {
    "code": "40 05 39.13",
    "label": "Concrete Pressure Water Pipe",
    "level": 5
  },
  {
    "code": "40 05 39.23",
    "label": "Concrete Gravity and Drainage Process Pipe",
    "level": 5
  },
  {
    "code": "40 05 51",
    "label": "Common Requirements for Process Valves",
    "level": 4
  },
  {
    "code": "40 05 53",
    "label": "Process Valves Four-inch Diameter and Larger",
    "level": 4
  },
  {
    "code": "40 05 56",
    "label": "Process Valves, Smaller than Four-inch Diameter",
    "level": 4
  },
  {
    "code": "40 05 57",
    "label": "Actuators for Process Valves and Gates",
    "level": 4
  },
  {
    "code": "40 05 57.13",
    "label": "Manual Actuators",
    "level": 5
  },
  {
    "code": "40 05 57.23",
    "label": "Electric Motor Actuators",
    "level": 5
  },
  {
    "code": "40 05 57.33",
    "label": "Hydraulic Cylinder Actuators",
    "level": 5
  },
  {
    "code": "40 05 57.43",
    "label": "Hydraulic Actuator Systems",
    "level": 5
  },
  {
    "code": "40 05 57.53",
    "label": "Pneumatic Actuators",
    "level": 5
  },
  {
    "code": "40 05 59",
    "label": "Hydraulic Gates",
    "level": 4
  },
  {
    "code": "40 05 59.13",
    "label": "Stop Plates",
    "level": 5
  },
  {
    "code": "40 05 59.16",
    "label": "Stop Logs",
    "level": 5
  },
  {
    "code": "40 05 59.21",
    "label": "Aluminum Slide Gates",
    "level": 5
  },
  {
    "code": "40 05 59.23",
    "label": "Stainless Steel Slide Gates",
    "level": 5
  },
  {
    "code": "40 05 59.26",
    "label": "Fiberglass-Reinforced Plastic Slide Gates",
    "level": 5
  },
  {
    "code": "40 05 59.33",
    "label": "Cast Iron Slide Gates",
    "level": 5
  },
  {
    "code": "40 05 59.43",
    "label": "Butterfly Gates",
    "level": 5
  },
  {
    "code": "40 05 61",
    "label": "Gate Valves",
    "level": 4
  },
  {
    "code": "40 05 61.13",
    "label": "Solid Wedge Metal-Seated Gate Valves",
    "level": 5
  },
  {
    "code": "40 05 61.16",
    "label": "Double Disc Metal-Seated Gate Valves",
    "level": 5
  },
  {
    "code": "40 05 61.23",
    "label": "Resilient-Seated Gate Valves",
    "level": 5
  },
  {
    "code": "40 05 61.43",
    "label": "Knife Gate Valves",
    "level": 5
  },
  {
    "code": "40 05 62",
    "label": "Plug Valves",
    "level": 4
  },
  {
    "code": "40 05 62.13",
    "label": "Eccentric Plug Valves for Gas Service",
    "level": 5
  },
  {
    "code": "40 05 62.16",
    "label": "Eccentric Plug Valves for Liquid Service",
    "level": 5
  },
  {
    "code": "40 05 63",
    "label": "Ball Valves",
    "level": 4
  },
  {
    "code": "40 05 63.13",
    "label": "AWWA Metal-Seated Ball Valves",
    "level": 5
  },
  {
    "code": "40 05 63.16",
    "label": "AWWA Resilient-Seated Ball Valves",
    "level": 5
  },
  {
    "code": "40 05 63.33",
    "label": "Metallic Ball Valves",
    "level": 5
  },
  {
    "code": "40 05 63.43",
    "label": "Plastic Ball Valves",
    "level": 5
  },
  {
    "code": "40 05 64",
    "label": "Butterfly Valves",
    "level": 4
  },
  {
    "code": "40 05 64.13",
    "label": "Metal-Seated Butterfly Valves",
    "level": 5
  },
  {
    "code": "40 05 64.16",
    "label": "AWWA Resilient-Seated Butterfly Valves",
    "level": 5
  },
  {
    "code": "40 05 64.23",
    "label": "Metallic Industrial Butterfly Valves",
    "level": 5
  },
  {
    "code": "40 05 64.26",
    "label": "Plastic Industrial Butterfly Valves",
    "level": 5
  },
  {
    "code": "40 05 64.33",
    "label": "Butterfly Valves in Air or Gas Service",
    "level": 5
  },
  {
    "code": "40 05 64.36",
    "label": "High-Performance Butterfly Valves in Air or Gas Service",
    "level": 5
  },
  {
    "code": "40 05 64.43",
    "label": "Dampers for Corrosive Gas Service",
    "level": 5
  },
  {
    "code": "40 05 65",
    "label": "Valves for Pump Control and Check Service",
    "level": 4
  },
  {
    "code": "40 05 65.11",
    "label": "Angle Valves",
    "level": 5
  },
  {
    "code": "40 05 65.13",
    "label": "Cone Valves",
    "level": 5
  },
  {
    "code": "40 05 65.16",
    "label": "Globe Valves",
    "level": 5
  },
  {
    "code": "40 05 65.23",
    "label": "Swing Check Valves",
    "level": 5
  },
  {
    "code": "40 05 65.26",
    "label": "Tilting Disc Check Valves",
    "level": 5
  },
  {
    "code": "40 05 65.29",
    "label": "Double-Disk Check Valves",
    "level": 5
  },
  {
    "code": "40 05 67",
    "label": "Specialized Pressure and Flow-Control Valves",
    "level": 4
  },
  {
    "code": "40 05 67.13",
    "label": "Reduced-Pressure Zone Backflow Preventers for Process Service",
    "level": 5
  },
  {
    "code": "40 05 67.16",
    "label": "Double Check Valve Assembly Backflow Preventers for Process Service",
    "level": 5
  },
  {
    "code": "40 05 67.23",
    "label": "Pressure Vacuum Breaker Backflow Preventers",
    "level": 5
  },
  {
    "code": "40 05 67.26",
    "label": "Atmospheric Vacuum Breaker Backflow Preventers",
    "level": 5
  },
  {
    "code": "40 05 67.29",
    "label": "Hose Connection Vacuum Breaker Backflow Preventers",
    "level": 5
  },
  {
    "code": "40 05 67.33",
    "label": "Backpressure Valves",
    "level": 5
  },
  {
    "code": "40 05 67.36",
    "label": "Pressure-Regulating Valves",
    "level": 5
  },
  {
    "code": "40 05 67.39",
    "label": "Pressure-Relief Valves",
    "level": 5
  },
  {
    "code": "40 05 67.41",
    "label": "Direct-Acting Surge Relief Valves for Water Service",
    "level": 5
  },
  {
    "code": "40 05 67.43",
    "label": "Pilot-Operated Surge Relief Valves for Water Service",
    "level": 5
  },
  {
    "code": "40 05 67.44",
    "label": "Pilot-Operated Surge Arrestor Valves for Water Service",
    "level": 5
  },
  {
    "code": "40 05 67.46",
    "label": "Electronic Surge Anticipator Valves for Water Service",
    "level": 5
  },
  {
    "code": "40 05 67.47",
    "label": "Surge Relief Valves for Wastewater Service",
    "level": 5
  },
  {
    "code": "40 05 67.49",
    "label": "Electronic Surge Anticipator Valves for Wastewater Service",
    "level": 5
  },
  {
    "code": "40 05 71",
    "label": "Solids Handling Valves",
    "level": 4
  },
  {
    "code": "40 05 71.13",
    "label": "Duckbill Check Valves",
    "level": 5
  },
  {
    "code": "40 05 71.16",
    "label": "Flap Gates",
    "level": 5
  },
  {
    "code": "40 05 71.23",
    "label": "Mud Valves",
    "level": 5
  },
  {
    "code": "40 05 71.33",
    "label": "Telescoping Valves",
    "level": 5
  },
  {
    "code": "40 05 73",
    "label": "Special-Application Process Valves",
    "level": 4
  },
  {
    "code": "40 05 73.13",
    "label": "Altitude Valves",
    "level": 5
  },
  {
    "code": "40 05 73.16",
    "label": "Float Valves",
    "level": 5
  },
  {
    "code": "40 05 73.23",
    "label": "Anti-Cavitation Valves",
    "level": 5
  },
  {
    "code": "40 05 74",
    "label": "Flexible-Closure Valves",
    "level": 4
  },
  {
    "code": "40 05 74.13",
    "label": "Diaphragm Valves",
    "level": 5
  },
  {
    "code": "40 05 74.23",
    "label": "Pinch Valves",
    "level": 5
  },
  {
    "code": "40 05 76",
    "label": "Hot-Tapping Valves and Appurtenances",
    "level": 4
  },
  {
    "code": "40 05 76.13",
    "label": "Tapping Sleeves and Valves",
    "level": 5
  },
  {
    "code": "40 05 76.16",
    "label": "Tapping Machines",
    "level": 5
  },
  {
    "code": "40 05 76.23",
    "label": "Line Stops",
    "level": 5
  },
  {
    "code": "40 05 78",
    "label": "Air Valves for Water and Wastewater Service",
    "level": 4
  },
  {
    "code": "40 05 78.11",
    "label": "Air Release Valves for Water Service",
    "level": 5
  },
  {
    "code": "40 05 78.13",
    "label": "Air/Vacuum Valves for Water Service",
    "level": 5
  },
  {
    "code": "40 05 78.16",
    "label": "Vacuum-Breaking Valves for Water Service",
    "level": 5
  },
  {
    "code": "40 05 78.19",
    "label": "Combination Air Valves for Water Service",
    "level": 5
  },
  {
    "code": "40 05 78.21",
    "label": "Air Release Valves for Wastewater Service",
    "level": 5
  },
  {
    "code": "40 05 78.23",
    "label": "Air/Vacuum Valves for Wastewater Service",
    "level": 5
  },
  {
    "code": "40 05 78.26",
    "label": "Vacuum-Breaking Valves for Wastewater Service",
    "level": 5
  },
  {
    "code": "40 05 78.29",
    "label": "Combination Air Valves for Wastewater Service",
    "level": 5
  },
  {
    "code": "40 05 81",
    "label": "Hydrants and Hose Bibbs for Process Service",
    "level": 4
  },
  {
    "code": "40 05 81.13",
    "label": "Fire Hydrants",
    "level": 5
  },
  {
    "code": "40 05 81.23",
    "label": "Yard Hydrants",
    "level": 5
  },
  {
    "code": "40 05 81.26",
    "label": "Freeze-Proof Yard Hydrants",
    "level": 5
  },
  {
    "code": "40 05 81.33",
    "label": "Hose Bibbs",
    "level": 5
  },
  {
    "code": "40 05 82",
    "label": "Solenoid Valves for Process Service",
    "level": 4
  },
  {
    "code": "40 05 89",
    "label": "Valve Accessories",
    "level": 4
  },
  {
    "code": "40 05 89.13",
    "label": "Basket Strainers for Process Service",
    "level": 5
  },
  {
    "code": "40 05 89.23",
    "label": "Needle Valves",
    "level": 5
  },
  {
    "code": "40 05 89.33",
    "label": "Quick-Connect Couplers",
    "level": 5
  },
  {
    "code": "40 05 93",
    "label": "Common Motor Requirements for Process Equipment",
    "level": 4
  },
  {
    "code": "40 05 96",
    "label": "Vibration and Seismic Controls for Process Equipment",
    "level": 4
  },
  {
    "code": "40 05 97",
    "label": "Identification for Process Equipment",
    "level": 4
  },
  {
    "code": "40 06 00",
    "label": "Schedules for Process Interconnections",
    "level": 3
  },
  {
    "code": "40 06 10",
    "label": "Schedules for Gas and Vapor Process Piping and Ductwork",
    "level": 4
  },
  {
    "code": "40 06 20",
    "label": "Schedules for Liquids Process Piping",
    "level": 4
  },
  {
    "code": "40 06 30",
    "label": "Schedules for Solid and Mixed Materials Piping and Chutes",
    "level": 4
  },
  {
    "code": "40 06 40",
    "label": "Schedules for Process Piping and Equipment Protection",
    "level": 4
  },
  {
    "code": "40 06 60",
    "label": "Schedules for Process Control and Process Facility Enterprise Management Systems",
    "level": 4
  },
  {
    "code": "40 06 70",
    "label": "Schedules of Instrumentation for Process Systems",
    "level": 4
  },
  {
    "code": "40 06 90",
    "label": "Schedules for Primary Control Devices",
    "level": 4
  },
  {
    "code": "40 10 00",
    "label": "Gas and Vapor Process Piping and Ductwork",
    "level": 2
  },
  {
    "code": "40 11 00",
    "label": "Steam Process Piping",
    "level": 3
  },
  {
    "code": "40 11 13",
    "label": "Low-Pressure Steam Process Piping",
    "level": 4
  },
  {
    "code": "40 11 16",
    "label": "Intermediate-Pressure Steam Process Piping",
    "level": 4
  },
  {
    "code": "40 11 19",
    "label": "High-Pressure Steam Process Piping",
    "level": 4
  },
  {
    "code": "40 11 23",
    "label": "Condensate Process Piping for Process Applications",
    "level": 4
  },
  {
    "code": "40 12 00",
    "label": "Compressed Air Process Piping",
    "level": 3
  },
  {
    "code": "40 12 13",
    "label": "Compressed Air Process Piping for Breathing Service",
    "level": 4
  },
  {
    "code": "40 12 23",
    "label": "Low-Pressure Compressed Air Process Piping",
    "level": 4
  },
  {
    "code": "40 12 53",
    "label": "High-Pressure Compressed Air Process Piping",
    "level": 4
  },
  {
    "code": "40 13 00",
    "label": "Process Ductwork",
    "level": 3
  },
  {
    "code": "40 15 00",
    "label": "Combustion System Gas Piping",
    "level": 3
  },
  {
    "code": "40 15 13",
    "label": "Combustion Air Piping",
    "level": 4
  },
  {
    "code": "40 15 16",
    "label": "Oxygen Combustion System Gas Piping",
    "level": 4
  },
  {
    "code": "40 15 19",
    "label": "Flue-Gas Combustion System Piping",
    "level": 4
  },
  {
    "code": "40 15 23",
    "label": "Exothermic-Gas Combustion System Piping",
    "level": 4
  },
  {
    "code": "40 15 26",
    "label": "Endothermic-Gas Combustion System Piping",
    "level": 4
  },
  {
    "code": "40 15 29",
    "label": "Dissociated-Ammonia-Gas Combustion System Piping",
    "level": 4
  },
  {
    "code": "40 16 00",
    "label": "Specialty and High-Purity Gases Piping",
    "level": 3
  },
  {
    "code": "40 16 13",
    "label": "Ammonia Gas Piping",
    "level": 4
  },
  {
    "code": "40 16 16",
    "label": "Boron Gas Piping",
    "level": 4
  },
  {
    "code": "40 16 17",
    "label": "Chlorine Gas Piping",
    "level": 4
  },
  {
    "code": "40 16 26",
    "label": "Diborane Gas Piping",
    "level": 4
  },
  {
    "code": "40 16 29",
    "label": "Fluorine Gas Piping",
    "level": 4
  },
  {
    "code": "40 16 33",
    "label": "Hydrogen Sulfide Gas Piping",
    "level": 4
  },
  {
    "code": "40 16 36",
    "label": "Nitrous-Oxide Gas Process Piping",
    "level": 4
  },
  {
    "code": "40 16 37",
    "label": "Oxygen Gas Process Piping",
    "level": 4
  },
  {
    "code": "40 16 39",
    "label": "Ozone Gas Process Piping",
    "level": 4
  },
  {
    "code": "40 16 43",
    "label": "Phosphine Gas Piping",
    "level": 4
  },
  {
    "code": "40 16 46",
    "label": "Silane Gas Piping",
    "level": 4
  },
  {
    "code": "40 16 49",
    "label": "Sulfur-Dioxide Gas Piping",
    "level": 4
  },
  {
    "code": "40 16 53",
    "label": "Specialty Gas Mixtures Piping",
    "level": 4
  },
  {
    "code": "40 16 56",
    "label": "High-Purity Gas Piping Components",
    "level": 4
  },
  {
    "code": "40 17 00",
    "label": "Welding and Cutting Gases Piping",
    "level": 3
  },
  {
    "code": "40 17 13",
    "label": "Acetylene Welding and Cutting Piping",
    "level": 4
  },
  {
    "code": "40 17 16",
    "label": "Acetylene-Hydrogen Mix Welding and Cutting Piping",
    "level": 4
  },
  {
    "code": "40 17 19",
    "label": "Methylacetylene-Propadiene Welding and Cutting Piping",
    "level": 4
  },
  {
    "code": "40 17 23",
    "label": "Oxygen Welding and Cutting Piping",
    "level": 4
  },
  {
    "code": "40 17 26",
    "label": "Inert Gas Welding and Cutting Piping",
    "level": 4
  },
  {
    "code": "40 18 00",
    "label": "Vacuum Systems Process Piping",
    "level": 3
  },
  {
    "code": "40 18 13",
    "label": "Low-Vacuum Systems Process Piping",
    "level": 4
  },
  {
    "code": "40 18 23",
    "label": "Chlorine Gas Vacuum System Piping",
    "level": 4
  },
  {
    "code": "40 18 53",
    "label": "High-Vacuum Systems Process Piping",
    "level": 4
  },
  {
    "code": "40 20 00",
    "label": "Liquids Process Piping",
    "level": 2
  },
  {
    "code": "40 21 00",
    "label": "Liquid Fuel Process Piping",
    "level": 3
  },
  {
    "code": "40 21 13",
    "label": "Bio Fuels Process Piping",
    "level": 4
  },
  {
    "code": "40 21 13.13",
    "label": "Bioalcohols Process Piping",
    "level": 5
  },
  {
    "code": "40 21 13.23",
    "label": "Biodiesel Fuel Process Piping",
    "level": 5
  },
  {
    "code": "40 21 13.26",
    "label": "Green Diesel Fuel Process Piping",
    "level": 5
  },
  {
    "code": "40 21 13.33",
    "label": "Biomass-to-Liquid (BTL) Fuel Process Piping",
    "level": 5
  },
  {
    "code": "40 21 13.43",
    "label": "Gas-to-Liquid (GTL) Fuel Process Piping",
    "level": 5
  },
  {
    "code": "40 21 16",
    "label": "Gasoline Process Piping",
    "level": 4
  },
  {
    "code": "40 21 19",
    "label": "Diesel Process Piping",
    "level": 4
  },
  {
    "code": "40 21 23",
    "label": "Fuel-Oils Process Piping",
    "level": 4
  },
  {
    "code": "40 21 23.13",
    "label": "No. 1 Fuel-Oil Process Piping",
    "level": 5
  },
  {
    "code": "40 21 23.23",
    "label": "No. 2 Fuel-Oil Process Piping",
    "level": 5
  },
  {
    "code": "40 21 23.26",
    "label": "Kerosene Process Piping",
    "level": 5
  },
  {
    "code": "40 21 23.29",
    "label": "Tar Fuels Process Piping",
    "level": 5
  },
  {
    "code": "40 21 23.43",
    "label": "No. 4 Fuel-Oil Process Piping",
    "level": 5
  },
  {
    "code": "40 21 23.53",
    "label": "No. 5 Fuel-Oil Process Piping",
    "level": 5
  },
  {
    "code": "40 21 23.63",
    "label": "No. 6 Fuel-Oil Process Piping",
    "level": 5
  },
  {
    "code": "40 22 00",
    "label": "Petroleum Products Piping",
    "level": 3
  },
  {
    "code": "40 22 10",
    "label": "Heavy-Fractions Petroleum Products Piping",
    "level": 4
  },
  {
    "code": "40 22 13",
    "label": "Liquefied Petroleum Gas (LPG) Process Piping",
    "level": 4
  },
  {
    "code": "40 22 16",
    "label": "Lubricating Oils Process Piping",
    "level": 4
  },
  {
    "code": "40 22 23",
    "label": "Petrochemicals Process Piping",
    "level": 4
  },
  {
    "code": "40 22 50",
    "label": "Light-Fractions Petroleum Products Piping",
    "level": 4
  },
  {
    "code": "40 23 00",
    "label": "Water and Wastewater Process Piping",
    "level": 3
  },
  {
    "code": "40 23 13",
    "label": "Deionized Water Process Piping",
    "level": 4
  },
  {
    "code": "40 23 16",
    "label": "Distilled-Water Process Piping",
    "level": 4
  },
  {
    "code": "40 23 19",
    "label": "Non-Potable Plant Water Process Piping",
    "level": 4
  },
  {
    "code": "40 23 23",
    "label": "Potable Water Process Piping",
    "level": 4
  },
  {
    "code": "40 23 29",
    "label": "Recirculated Water Process Piping",
    "level": 4
  },
  {
    "code": "40 23 33",
    "label": "Reverse-Osmosis Water Process Piping",
    "level": 4
  },
  {
    "code": "40 23 40",
    "label": "Sanitary Wastewater Process Piping",
    "level": 4
  },
  {
    "code": "40 23 41",
    "label": "Grit Process Piping",
    "level": 4
  },
  {
    "code": "40 23 43",
    "label": "Scum and Floatables Process Piping",
    "level": 4
  },
  {
    "code": "40 23 44",
    "label": "Primary Sludge Process Piping",
    "level": 4
  },
  {
    "code": "40 23 46",
    "label": "Waste Sludge Process Piping",
    "level": 4
  },
  {
    "code": "40 23 48",
    "label": "Thickened Sludge Process Piping",
    "level": 4
  },
  {
    "code": "40 24 00",
    "label": "Specialty Liquid Chemicals Piping",
    "level": 3
  },
  {
    "code": "40 24 13",
    "label": "Alcohol Piping",
    "level": 4
  },
  {
    "code": "40 24 14",
    "label": "Liquid Chlorine and Sodium Hypochlorite Piping",
    "level": 4
  },
  {
    "code": "40 24 16",
    "label": "Gel Piping",
    "level": 4
  },
  {
    "code": "40 24 19",
    "label": "Slurries Process Piping",
    "level": 4
  },
  {
    "code": "40 24 23",
    "label": "Thixotropic Liquid Piping",
    "level": 4
  },
  {
    "code": "40 25 00",
    "label": "Liquid Acids and Bases Piping",
    "level": 3
  },
  {
    "code": "40 25 10",
    "label": "Liquid Acids Piping",
    "level": 4
  },
  {
    "code": "40 25 50",
    "label": "Liquid Bases Piping",
    "level": 4
  },
  {
    "code": "40 26 00",
    "label": "Liquid Polymer Piping",
    "level": 3
  },
  {
    "code": "40 30 00",
    "label": "Solid and Mixed Materials Piping and Chutes",
    "level": 2
  },
  {
    "code": "40 32 00",
    "label": "Bulk Materials Piping and Chutes",
    "level": 3
  },
  {
    "code": "40 32 10",
    "label": "Abrasive Materials Piping and Chutes",
    "level": 4
  },
  {
    "code": "40 32 50",
    "label": "Nonabrasive Materials Piping and Chutes",
    "level": 4
  },
  {
    "code": "40 33 00",
    "label": "Bulk Materials Valves",
    "level": 3
  },
  {
    "code": "40 33 13",
    "label": "Airlock Bulk Materials Valves",
    "level": 4
  },
  {
    "code": "40 33 16",
    "label": "Blind Bulk Materials Valves",
    "level": 4
  },
  {
    "code": "40 33 26",
    "label": "Diverter Bulk Materials Valves",
    "level": 4
  },
  {
    "code": "40 33 29",
    "label": "Double or Single Dump Bulk Materials Valves",
    "level": 4
  },
  {
    "code": "40 33 39",
    "label": "Swing Bulk Materials Valves",
    "level": 4
  },
  {
    "code": "40 33 43",
    "label": "Specialty Bulk Materials Valves",
    "level": 4
  },
  {
    "code": "40 34 00",
    "label": "Pneumatic Conveying Lines",
    "level": 3
  },
  {
    "code": "40 34 10",
    "label": "Dense Phase Pneumatic Conveying Lines",
    "level": 4
  },
  {
    "code": "40 34 50",
    "label": "Dilute Phase Pneumatic Conveying Lines",
    "level": 4
  },
  {
    "code": "40 40 00",
    "label": "Process Piping and Equipment Protection",
    "level": 2
  },
  {
    "code": "40 41 00",
    "label": "Process Piping and Equipment Heat Tracing",
    "level": 3
  },
  {
    "code": "40 41 13",
    "label": "Process Piping Heat Tracing",
    "level": 4
  },
  {
    "code": "40 41 13.13",
    "label": "Process Piping Electrical Resistance Heat Tracing",
    "level": 5
  },
  {
    "code": "40 41 13.16",
    "label": "Process Piping Electrical Conductance Heat Tracing",
    "level": 5
  },
  {
    "code": "40 41 13.19",
    "label": "Process Piping Gas Heat Tracing",
    "level": 5
  },
  {
    "code": "40 41 13.23",
    "label": "Process Piping Steam Heat Tracing",
    "level": 5
  },
  {
    "code": "40 41 13.26",
    "label": "Process Piping Thermal Fluids Heat Tracing",
    "level": 5
  },
  {
    "code": "40 41 23",
    "label": "Process Equipment Heat Tracing",
    "level": 4
  },
  {
    "code": "40 41 23.13",
    "label": "Process Equipment Electrical Resistance Heat Tracing",
    "level": 5
  },
  {
    "code": "40 41 23.16",
    "label": "Process Equipment Electrical Conductance Heat Tracing",
    "level": 5
  },
  {
    "code": "40 41 23.19",
    "label": "Process Equipment Gas Heat Tracing",
    "level": 5
  },
  {
    "code": "40 41 23.23",
    "label": "Process Equipment Steam Heat Tracing",
    "level": 5
  },
  {
    "code": "40 41 23.26",
    "label": "Process Equipment Thermal Fluids Heat Tracing",
    "level": 5
  },
  {
    "code": "40 42 00",
    "label": "Process Piping and Equipment Insulation",
    "level": 3
  },
  {
    "code": "40 42 13",
    "label": "Process Piping Insulation",
    "level": 4
  },
  {
    "code": "40 42 13.13",
    "label": "Cryogenic Temperature Process Piping Insulation",
    "level": 5
  },
  {
    "code": "40 42 13.16",
    "label": "Low Temperature Process Piping Insulation",
    "level": 5
  },
  {
    "code": "40 42 13.19",
    "label": "Intermediate Temperature Process Piping Insulation",
    "level": 5
  },
  {
    "code": "40 42 13.23",
    "label": "High Temperature Process Piping Insulation",
    "level": 5
  },
  {
    "code": "40 42 13.26",
    "label": "Process Piping Insulation for Specialty Applications",
    "level": 5
  },
  {
    "code": "40 42 23",
    "label": "Process Equipment Insulation",
    "level": 4
  },
  {
    "code": "40 42 23.13",
    "label": "Cryogenic Temperature Process Equipment Insulation",
    "level": 5
  },
  {
    "code": "40 42 23.16",
    "label": "Low Temperature Process Equipment Insulation",
    "level": 5
  },
  {
    "code": "40 42 23.19",
    "label": "Intermediate Temperature Process Equipment Insulation",
    "level": 5
  },
  {
    "code": "40 42 23.23",
    "label": "High Temperature Process Equipment Insulation",
    "level": 5
  },
  {
    "code": "40 42 23.26",
    "label": "Process Equipment Insulation for Specialty Applications",
    "level": 5
  },
  {
    "code": "40 46 00",
    "label": "Process Corrosion Protection",
    "level": 3
  },
  {
    "code": "40 46 16",
    "label": "Coatings and Wrappings for Process Corrosion Protection",
    "level": 4
  },
  {
    "code": "40 46 42",
    "label": "Cathodic Process Corrosion Protection",
    "level": 4
  },
  {
    "code": "40 47 00",
    "label": "Refractories",
    "level": 3
  },
  {
    "code": "40 47 13",
    "label": "Silica Refractories",
    "level": 4
  },
  {
    "code": "40 47 16",
    "label": "Alumina Refractories",
    "level": 4
  },
  {
    "code": "40 47 19",
    "label": "Carbon and Graphite Refractories",
    "level": 4
  },
  {
    "code": "40 47 23",
    "label": "Castable Refractories",
    "level": 4
  },
  {
    "code": "40 47 26",
    "label": "Rammed Refractories",
    "level": 4
  },
  {
    "code": "40 47 29",
    "label": "Refractory Concrete",
    "level": 4
  },
  {
    "code": "40 60 00",
    "label": "Process Control and Enterprise Management Systems",
    "level": 2
  },
  {
    "code": "40 61 00",
    "label": "Process Control and Enterprise Management Systems General Provisions",
    "level": 3
  },
  {
    "code": "40 61 13",
    "label": "Process Control System General Provisions",
    "level": 4
  },
  {
    "code": "40 61 16",
    "label": "Enterprise Management System General Provisions",
    "level": 4
  },
  {
    "code": "40 61 21",
    "label": "Process Control System Testing",
    "level": 4
  },
  {
    "code": "40 61 26",
    "label": "Process Control System Training",
    "level": 4
  },
  {
    "code": "40 61 93",
    "label": "Process Control System Input/Output List",
    "level": 4
  },
  {
    "code": "40 61 96",
    "label": "Process Control Descriptions",
    "level": 4
  },
  {
    "code": "40 62 00",
    "label": "Computer System Hardware and Ancillaries",
    "level": 3
  },
  {
    "code": "40 62 13",
    "label": "Server Computers",
    "level": 4
  },
  {
    "code": "40 62 16",
    "label": "Operator Workstation Computers",
    "level": 4
  },
  {
    "code": "40 62 19",
    "label": "Industrial Computers",
    "level": 4
  },
  {
    "code": "40 62 21",
    "label": "Desktop Computers",
    "level": 4
  },
  {
    "code": "40 62 23",
    "label": "Mobile Computers",
    "level": 4
  },
  {
    "code": "40 62 26",
    "label": "Laptop Computers",
    "level": 4
  },
  {
    "code": "40 62 29",
    "label": "Tablet Computers and Mobile Devices",
    "level": 4
  },
  {
    "code": "40 62 33",
    "label": "Printers",
    "level": 4
  },
  {
    "code": "40 62 43",
    "label": "Large Display Screens",
    "level": 4
  },
  {
    "code": "40 62 63",
    "label": "Operator Interface Terminals (OIT)",
    "level": 4
  },
  {
    "code": "40 63 00",
    "label": "Control System Equipment",
    "level": 3
  },
  {
    "code": "40 63 13",
    "label": "Distributed Process Control Systems",
    "level": 4
  },
  {
    "code": "40 63 43",
    "label": "Programmable Logic Controllers",
    "level": 4
  },
  {
    "code": "40 63 83",
    "label": "Remote Terminal Units",
    "level": 4
  },
  {
    "code": "40 66 00",
    "label": "Network and Communication Equipment",
    "level": 3
  },
  {
    "code": "40 66 13",
    "label": "Switches and Routers",
    "level": 4
  },
  {
    "code": "40 66 16",
    "label": "Firewall Hardware",
    "level": 4
  },
  {
    "code": "40 66 19",
    "label": "Media Converters",
    "level": 4
  },
  {
    "code": "40 66 23",
    "label": "Frame Relay Equipment",
    "level": 4
  },
  {
    "code": "40 66 26",
    "label": "Device Network Equipment",
    "level": 4
  },
  {
    "code": "40 66 33",
    "label": "Metallic and Fiber-Optic Communication Cabling and Connectors",
    "level": 4
  },
  {
    "code": "40 66 36",
    "label": "Process Instrumentation Networks",
    "level": 4
  },
  {
    "code": "40 66 43",
    "label": "Wireless Network Systems",
    "level": 4
  },
  {
    "code": "40 66 53",
    "label": "Multiple Address Radio Equipment",
    "level": 4
  },
  {
    "code": "40 66 56",
    "label": "Point-to-Point Radio Equipment",
    "level": 4
  },
  {
    "code": "40 66 63",
    "label": "Antennas",
    "level": 4
  },
  {
    "code": "40 66 66",
    "label": "Monopoles and Towers",
    "level": 4
  },
  {
    "code": "40 66 73",
    "label": "Satellite Communication Equipment",
    "level": 4
  },
  {
    "code": "40 67 00",
    "label": "Control System Equipment Panels and Racks",
    "level": 3
  },
  {
    "code": "40 67 13",
    "label": "Computer Equipment Racks",
    "level": 4
  },
  {
    "code": "40 67 16",
    "label": "Free-Standing Panels",
    "level": 4
  },
  {
    "code": "40 67 19",
    "label": "Wall-Mounted Panels",
    "level": 4
  },
  {
    "code": "40 67 23",
    "label": "Control System Consoles",
    "level": 4
  },
  {
    "code": "40 67 33",
    "label": "Panel Wiring",
    "level": 4
  },
  {
    "code": "40 67 63",
    "label": "Control Panel-Mounted Uninterruptible Power Supply",
    "level": 4
  },
  {
    "code": "40 68 00",
    "label": "Process Control Software",
    "level": 3
  },
  {
    "code": "40 68 13",
    "label": "Process Control (HMI) Software",
    "level": 4
  },
  {
    "code": "40 68 23",
    "label": "Reporting Software",
    "level": 4
  },
  {
    "code": "40 68 26",
    "label": "Online Performance Monitoring Systems Software",
    "level": 4
  },
  {
    "code": "40 68 33",
    "label": "Maintenance Management Software",
    "level": 4
  },
  {
    "code": "40 68 36",
    "label": "Laboratory Information System Software",
    "level": 4
  },
  {
    "code": "40 68 39",
    "label": "Energy Management Software",
    "level": 4
  },
  {
    "code": "40 68 43",
    "label": "Load Management Software",
    "level": 4
  },
  {
    "code": "40 68 63",
    "label": "Configuration of HMI Software",
    "level": 4
  },
  {
    "code": "40 68 66",
    "label": "Programming of Controller Software",
    "level": 4
  },
  {
    "code": "40 68 93",
    "label": "Computer Operating Systems Software",
    "level": 4
  },
  {
    "code": "40 69 00",
    "label": "Packaged Control Systems",
    "level": 3
  },
  {
    "code": "40 69 13",
    "label": "Control System Simulators",
    "level": 4
  },
  {
    "code": "40 69 23",
    "label": "Burner Management Systems",
    "level": 4
  },
  {
    "code": "40 69 26",
    "label": "Safety Instrumented Control Systems",
    "level": 4
  },
  {
    "code": "40 69 33",
    "label": "Fire and Gas Monitoring/Protection Systems for Industrial Applications",
    "level": 4
  },
  {
    "code": "40 70 00",
    "label": "Instrumentation for Process Systems",
    "level": 2
  },
  {
    "code": "40 71 00",
    "label": "Flow Measurement",
    "level": 3
  },
  {
    "code": "40 71 13",
    "label": "Magnetic Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 13.13",
    "label": "Inline Magnetic Flow Meters",
    "level": 5
  },
  {
    "code": "40 71 13.23",
    "label": "Insertion-Type Magnetic Flow Meters",
    "level": 5
  },
  {
    "code": "40 71 23",
    "label": "Differential Pressure-Type Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 23.13",
    "label": "Venturi Flow Meters",
    "level": 5
  },
  {
    "code": "40 71 23.16",
    "label": "Flow Tubes",
    "level": 5
  },
  {
    "code": "40 71 23.19",
    "label": "Flow Nozzle-Type Flow Meters",
    "level": 5
  },
  {
    "code": "40 71 23.23",
    "label": "Orifice Plate Flow Meters",
    "level": 5
  },
  {
    "code": "40 71 23.26",
    "label": "Integral Orifice Flow Meters",
    "level": 5
  },
  {
    "code": "40 71 23.29",
    "label": "Orifice Meter Runs",
    "level": 5
  },
  {
    "code": "40 71 23.33",
    "label": "Elbow Flow Meters",
    "level": 5
  },
  {
    "code": "40 71 23.36",
    "label": "Pitot Tube and Averaging Pitot Flow Meters",
    "level": 5
  },
  {
    "code": "40 71 23.39",
    "label": "V-Cone Flow Meters",
    "level": 5
  },
  {
    "code": "40 71 23.43",
    "label": "Differential Pressure-Type Flow Transmitters",
    "level": 5
  },
  {
    "code": "40 71 23.46",
    "label": "Flow Computers",
    "level": 5
  },
  {
    "code": "40 71 33",
    "label": "Propeller Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 36",
    "label": "Turbine Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 43",
    "label": "Variable Area Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 46",
    "label": "Target Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 49",
    "label": "Vortex-Shedding Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 53",
    "label": "Positive Displacement Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 63",
    "label": "Doppler Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 66",
    "label": "Transit Time Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 69",
    "label": "Open Channel Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 73",
    "label": "Coriolis Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 76",
    "label": "Thermal Flow Meters",
    "level": 4
  },
  {
    "code": "40 71 79",
    "label": "Flow Switches",
    "level": 4
  },
  {
    "code": "40 71 83",
    "label": "Sight Flow Indicators",
    "level": 4
  },
  {
    "code": "40 71 86",
    "label": "Flow Metering Weirs",
    "level": 4
  },
  {
    "code": "40 72 00",
    "label": "Level Measurement",
    "level": 3
  },
  {
    "code": "40 72 13",
    "label": "Ultrasonic Level Meters (Continuous and Point-Type)",
    "level": 4
  },
  {
    "code": "40 72 23",
    "label": "Radar Level Meters",
    "level": 4
  },
  {
    "code": "40 72 26",
    "label": "Laser Level Meters",
    "level": 4
  },
  {
    "code": "40 72 29",
    "label": "Nuclear Level Meters",
    "level": 4
  },
  {
    "code": "40 72 33",
    "label": "Capacitance Type Level Meters (Continuous and Point Type)",
    "level": 4
  },
  {
    "code": "40 72 36",
    "label": "RF Admittance Level Meters (Continuous and Point Type)",
    "level": 4
  },
  {
    "code": "40 72 43",
    "label": "Pressure and Differential Pressure Type Level Meters",
    "level": 4
  },
  {
    "code": "40 72 46",
    "label": "Bubbler Systems",
    "level": 4
  },
  {
    "code": "40 72 53",
    "label": "Magnetic and Magnetostrictive Level Meters",
    "level": 4
  },
  {
    "code": "40 72 63",
    "label": "Displacement-Type Level Meters",
    "level": 4
  },
  {
    "code": "40 72 73",
    "label": "Sight Level Gauges",
    "level": 4
  },
  {
    "code": "40 72 76",
    "label": "Level Switches",
    "level": 4
  },
  {
    "code": "40 72 83",
    "label": "Leak Detection Systems",
    "level": 4
  },
  {
    "code": "40 73 00",
    "label": "Pressure, Strain, and Force Measurement",
    "level": 3
  },
  {
    "code": "40 73 13",
    "label": "Pressure and Differential Pressure Gauges",
    "level": 4
  },
  {
    "code": "40 73 16",
    "label": "Manometers",
    "level": 4
  },
  {
    "code": "40 73 23",
    "label": "Absolute-Pressure Transmitters",
    "level": 4
  },
  {
    "code": "40 73 26",
    "label": "Gauge-Pressure Transmitters",
    "level": 4
  },
  {
    "code": "40 73 29",
    "label": "Differential Pressure Transmitters",
    "level": 4
  },
  {
    "code": "40 73 33",
    "label": "Multi-Variable Pressure/Temperature Transmitters",
    "level": 4
  },
  {
    "code": "40 73 36",
    "label": "Pressure and Differential Pressure Switches",
    "level": 4
  },
  {
    "code": "40 73 43",
    "label": "Force Measurement Devices",
    "level": 4
  },
  {
    "code": "40 73 46",
    "label": "Load Cells",
    "level": 4
  },
  {
    "code": "40 73 53",
    "label": "Torque Measurement Devices",
    "level": 4
  },
  {
    "code": "40 73 63",
    "label": "Diaphragm Seals",
    "level": 4
  },
  {
    "code": "40 74 00",
    "label": "Temperature Measurement",
    "level": 3
  },
  {
    "code": "40 74 13",
    "label": "Resistance Temperature Devices",
    "level": 4
  },
  {
    "code": "40 74 16",
    "label": "Thermocouples",
    "level": 4
  },
  {
    "code": "40 74 23",
    "label": "Radiation Pyrometers",
    "level": 4
  },
  {
    "code": "40 74 33",
    "label": "Thermistors",
    "level": 4
  },
  {
    "code": "40 74 36",
    "label": "Diode Temperature Measurement Devices",
    "level": 4
  },
  {
    "code": "40 74 43",
    "label": "Bimetallic Thermometers",
    "level": 4
  },
  {
    "code": "40 74 46",
    "label": "Fluid Expansion Thermometers",
    "level": 4
  },
  {
    "code": "40 74 49",
    "label": "Change-of-State Temperature Measurement Devices",
    "level": 4
  },
  {
    "code": "40 74 53",
    "label": "Cryogenic Temperature Sensors",
    "level": 4
  },
  {
    "code": "40 74 63",
    "label": "Temperature Transmitters",
    "level": 4
  },
  {
    "code": "40 74 66",
    "label": "Temperature Switches",
    "level": 4
  },
  {
    "code": "40 74 69",
    "label": "Thermowells, Protection Tubes, and Test Thermowells",
    "level": 4
  },
  {
    "code": "40 75 00",
    "label": "Process Liquid Analytical Measurement",
    "level": 3
  },
  {
    "code": "40 75 05",
    "label": "Multi-Parameter Analyzer Systems",
    "level": 4
  },
  {
    "code": "40 75 13",
    "label": "pH/ORP Analyzers",
    "level": 4
  },
  {
    "code": "40 75 16",
    "label": "Conductivity Analyzers",
    "level": 4
  },
  {
    "code": "40 75 19",
    "label": "Moisture Analyzers",
    "level": 4
  },
  {
    "code": "40 75 21",
    "label": "Chlorine Analyzers",
    "level": 4
  },
  {
    "code": "40 75 21.13",
    "label": "Free-Chlorine Analyzers",
    "level": 5
  },
  {
    "code": "40 75 21.23",
    "label": "Residual-Chlorine Analyzers",
    "level": 5
  },
  {
    "code": "40 75 23",
    "label": "Chlorine Dioxide Analyzer",
    "level": 4
  },
  {
    "code": "40 75 26",
    "label": "Dissolved Chlorine Dioxide Analyzers",
    "level": 4
  },
  {
    "code": "40 75 29",
    "label": "Dissolved Ammonia Analyzers",
    "level": 4
  },
  {
    "code": "40 75 33",
    "label": "Fluoride Analyzers",
    "level": 4
  },
  {
    "code": "40 75 43",
    "label": "Dissolved Oxygen Analyzers",
    "level": 4
  },
  {
    "code": "40 75 46",
    "label": "Dissolved Ozone Analyzers",
    "level": 4
  },
  {
    "code": "40 75 53",
    "label": "Turbidity Analyzers",
    "level": 4
  },
  {
    "code": "40 75 56",
    "label": "Suspended Solids/Sludge Density Analyzers",
    "level": 4
  },
  {
    "code": "40 75 59",
    "label": "Liquid Density Analyzers",
    "level": 4
  },
  {
    "code": "40 75 63",
    "label": "Monochloramine Analyzers",
    "level": 4
  },
  {
    "code": "40 75 66",
    "label": "Nitrogen Analyzers",
    "level": 4
  },
  {
    "code": "40 75 69",
    "label": "Phosphorous Analyzers",
    "level": 4
  },
  {
    "code": "40 75 73",
    "label": "Particle Counters",
    "level": 4
  },
  {
    "code": "40 75 76",
    "label": "Total Organic Carbon Analyzers",
    "level": 4
  },
  {
    "code": "40 75 79",
    "label": "Total Organics Analyzers",
    "level": 4
  },
  {
    "code": "40 75 83",
    "label": "Hardness Analyzers",
    "level": 4
  },
  {
    "code": "40 75 86",
    "label": "Alkalinity Analyzer",
    "level": 4
  },
  {
    "code": "40 76 00",
    "label": "Process Gas Analytical Measurement",
    "level": 3
  },
  {
    "code": "40 76 05",
    "label": "Continuous Emissions Monitoring Systems",
    "level": 4
  },
  {
    "code": "40 76 13",
    "label": "Oxygen Gas Analyzers",
    "level": 4
  },
  {
    "code": "40 76 16",
    "label": "Ozone Analyzers",
    "level": 4
  },
  {
    "code": "40 76 23",
    "label": "Combustible Gas Monitors",
    "level": 4
  },
  {
    "code": "40 76 26",
    "label": "Chlorine Gas Analyzers",
    "level": 4
  },
  {
    "code": "40 76 29",
    "label": "Ammonia Gas Analyzers",
    "level": 4
  },
  {
    "code": "40 76 33",
    "label": "Hydrogen Sulfide Monitors",
    "level": 4
  },
  {
    "code": "40 76 36",
    "label": "Sulfur Dioxide Analyzers",
    "level": 4
  },
  {
    "code": "40 76 39",
    "label": "Carbon Dioxide Analyzers",
    "level": 4
  },
  {
    "code": "40 76 43",
    "label": "Carbon Monoxide Analyzers",
    "level": 4
  },
  {
    "code": "40 76 53",
    "label": "Dewpoint/Moisture Analyzers",
    "level": 4
  },
  {
    "code": "40 76 56",
    "label": "Gas Density Analyzers",
    "level": 4
  },
  {
    "code": "40 76 63",
    "label": "Flue Gas Analyzers",
    "level": 4
  },
  {
    "code": "40 76 66",
    "label": "NO/NOX Analyzers",
    "level": 4
  },
  {
    "code": "40 76 73",
    "label": "Hydrocarbon Analyzers",
    "level": 4
  },
  {
    "code": "40 76 76",
    "label": "Gas Chromatograph Analyzers",
    "level": 4
  },
  {
    "code": "40 76 79",
    "label": "Vapor Pressure Analyzers",
    "level": 4
  },
  {
    "code": "40 76 83",
    "label": "Mass Spectrometers",
    "level": 4
  },
  {
    "code": "40 77 00",
    "label": "Position and Motion Measurement",
    "level": 3
  },
  {
    "code": "40 77 13",
    "label": "Acceleration Measurement Devices",
    "level": 4
  },
  {
    "code": "40 77 16",
    "label": "Proximity Measurement Devices",
    "level": 4
  },
  {
    "code": "40 77 19",
    "label": "Vibration Velocity Measurement Devices",
    "level": 4
  },
  {
    "code": "40 77 23",
    "label": "Vibration Monitoring Systems",
    "level": 4
  },
  {
    "code": "40 77 26",
    "label": "Position, Speed, and Motion Measurement Devices",
    "level": 4
  },
  {
    "code": "40 78 00",
    "label": "Panel Mounted Instruments",
    "level": 3
  },
  {
    "code": "40 78 13",
    "label": "Indicators and Meters",
    "level": 4
  },
  {
    "code": "40 78 16",
    "label": "Indicating Lights",
    "level": 4
  },
  {
    "code": "40 78 19",
    "label": "Switches and Push Buttons",
    "level": 4
  },
  {
    "code": "40 78 23",
    "label": "Potentiometers and Manual Controllers",
    "level": 4
  },
  {
    "code": "40 78 26",
    "label": "Chart Recorders",
    "level": 4
  },
  {
    "code": "40 78 33",
    "label": "Annunciators",
    "level": 4
  },
  {
    "code": "40 78 43",
    "label": "Single-Loop Controllers",
    "level": 4
  },
  {
    "code": "40 78 53",
    "label": "Relays",
    "level": 4
  },
  {
    "code": "40 78 56",
    "label": "Isolators, Intrinsically-Safe Barriers, and Surge Suppressors",
    "level": 4
  },
  {
    "code": "40 78 59",
    "label": "Power Supplies",
    "level": 4
  },
  {
    "code": "40 78 63",
    "label": "Alarm Dialers",
    "level": 4
  },
  {
    "code": "40 79 00",
    "label": "Miscellaneous Instruments, Calibration Equipment, Instrument Valves, and Fittings",
    "level": 3
  },
  {
    "code": "40 79 13",
    "label": "Nuclear Mass-Measuring Scales",
    "level": 4
  },
  {
    "code": "40 79 23",
    "label": "Instrument Calibration Equipment",
    "level": 4
  },
  {
    "code": "40 79 26",
    "label": "Instrument Programming Equipment",
    "level": 4
  },
  {
    "code": "40 79 33",
    "label": "Current-to-Pressure Converters",
    "level": 4
  },
  {
    "code": "40 79 36",
    "label": "Voltage-to-Pressure Converters",
    "level": 4
  },
  {
    "code": "40 79 39",
    "label": "Signal Conditioners and Converters",
    "level": 4
  },
  {
    "code": "40 79 43",
    "label": "Deadweight Testers",
    "level": 4
  },
  {
    "code": "40 79 46",
    "label": "Flame Scanners",
    "level": 4
  },
  {
    "code": "40 79 63",
    "label": "Instrument Tubing",
    "level": 4
  },
  {
    "code": "40 79 66",
    "label": "Instrument Valve Manifolds, Valves, and Fittings",
    "level": 4
  },
  {
    "code": "40 80 00",
    "label": "Commissioning of Process Systems",
    "level": 2
  },
  {
    "code": "40 90 00",
    "label": "Primary Control Devices",
    "level": 2
  },
  {
    "code": "40 91 00",
    "label": "Primary Control Valves",
    "level": 3
  },
  {
    "code": "40 91 13",
    "label": "Electrically-Operated Primary Control Valves",
    "level": 4
  },
  {
    "code": "40 91 16",
    "label": "Hydraulically-Operated Primary Control Valves",
    "level": 4
  },
  {
    "code": "40 91 19",
    "label": "Pneumatically-Operated Primary Control Valves",
    "level": 4
  },
  {
    "code": "40 91 23",
    "label": "Solenoid Primary Control Valves",
    "level": 4
  },
  {
    "code": "40 91 26",
    "label": "Specialty Primary Control Valves",
    "level": 4
  },
  {
    "code": "40 92 00",
    "label": "Self-Contained Flow Controllers",
    "level": 3
  },
  {
    "code": "40 93 00",
    "label": "Linear Actuators and Positioners",
    "level": 3
  },
  {
    "code": "40 94 00",
    "label": "Self-Contained Pressure Regulators",
    "level": 3
  },
  {
    "code": "40 95 00",
    "label": "Rotary Actuators",
    "level": 3
  },
  {
    "code": "40 96 00",
    "label": "Saturable Core Reactors",
    "level": 3
  },
  {
    "code": "40 97 00",
    "label": "Variable Frequency Drives",
    "level": 3
  },
  {
    "code": "41 00 00",
    "label": "Material Processing and Handling Equipment",
    "level": 1
  },
  {
    "code": "41 01 00",
    "label": "Operation and Maintenance of Material Processing and Handling Equipment",
    "level": 3
  },
  {
    "code": "41 01 52",
    "label": "Operation and Maintenance of Bulk Materials Storage",
    "level": 4
  },
  {
    "code": "41 01 52.13",
    "label": "Storage Bin and Hopper Cleaning",
    "level": 5
  },
  {
    "code": "41 01 52.16",
    "label": "Silo Cleaning",
    "level": 5
  },
  {
    "code": "41 05 00",
    "label": "Common Work Results for Material Processing and Handling Equipment",
    "level": 3
  },
  {
    "code": "41 05 05",
    "label": "Selective Demolition for Material Processing and Handling Equipment",
    "level": 4
  },
  {
    "code": "41 06 00",
    "label": "Schedules for Material Processing and Handling Equipment",
    "level": 3
  },
  {
    "code": "41 06 10",
    "label": "Schedules for Bulk Material Processing Equipment",
    "level": 4
  },
  {
    "code": "41 06 20",
    "label": "Schedules for Piece Material Handling Equipment",
    "level": 4
  },
  {
    "code": "41 06 30",
    "label": "Schedules for Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "41 06 40",
    "label": "Schedules for Container Processing and Packaging",
    "level": 4
  },
  {
    "code": "41 06 50",
    "label": "Schedules for Material Storage",
    "level": 4
  },
  {
    "code": "41 06 60",
    "label": "Schedules for Mobile Plant Equipment",
    "level": 4
  },
  {
    "code": "41 08 00",
    "label": "Commissioning of Material Processing and Handling Equipment",
    "level": 3
  },
  {
    "code": "41 08 10",
    "label": "Commissioning of Bulk Material Processing Equipment",
    "level": 4
  },
  {
    "code": "41 08 20",
    "label": "Commissioning of Piece Material Handling Equipment",
    "level": 4
  },
  {
    "code": "41 08 30",
    "label": "Commissioning of Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "41 08 40",
    "label": "Commissioning of Container Processing and Packaging",
    "level": 4
  },
  {
    "code": "41 08 50",
    "label": "Commissioning of Material Storage",
    "level": 4
  },
  {
    "code": "41 08 60",
    "label": "Commissioning of Mobile Plant Equipment",
    "level": 4
  },
  {
    "code": "41 10 00",
    "label": "Bulk Material Processing Equipment",
    "level": 2
  },
  {
    "code": "41 11 00",
    "label": "Bulk Material Sizing Equipment",
    "level": 3
  },
  {
    "code": "41 11 13",
    "label": "Bulk Material Agglomerators",
    "level": 4
  },
  {
    "code": "41 11 16",
    "label": "Bulk Material Air Mill Classifiers",
    "level": 4
  },
  {
    "code": "41 11 19",
    "label": "Bulk Material Centrifuges",
    "level": 4
  },
  {
    "code": "41 11 23",
    "label": "Bulk Material Crushers",
    "level": 4
  },
  {
    "code": "41 11 26",
    "label": "Bulk Material Cyclones",
    "level": 4
  },
  {
    "code": "41 11 29",
    "label": "Bulk Material Fluid Bed Separators",
    "level": 4
  },
  {
    "code": "41 11 33",
    "label": "Bulk Material Grinders",
    "level": 4
  },
  {
    "code": "41 11 36",
    "label": "Bulk Material Homogenizers",
    "level": 4
  },
  {
    "code": "41 11 39",
    "label": "Bulk Material Lump Breakers",
    "level": 4
  },
  {
    "code": "41 11 43",
    "label": "Bulk Material Mills",
    "level": 4
  },
  {
    "code": "41 11 46",
    "label": "Bulk Material Pulverizers",
    "level": 4
  },
  {
    "code": "41 11 49",
    "label": "Bulk Material Screens",
    "level": 4
  },
  {
    "code": "41 11 53",
    "label": "Bulk Material Shredders",
    "level": 4
  },
  {
    "code": "41 11 56",
    "label": "Bulk Material Sieves",
    "level": 4
  },
  {
    "code": "41 12 00",
    "label": "Bulk Material Conveying Equipment",
    "level": 3
  },
  {
    "code": "41 12 13",
    "label": "Bulk Material Conveyors",
    "level": 4
  },
  {
    "code": "41 12 13.13",
    "label": "Airslide Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.16",
    "label": "Auger Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.19",
    "label": "Belt Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.23",
    "label": "Container Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.26",
    "label": "Drag Chain Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.29",
    "label": "Hopper Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.33",
    "label": "Reciprocating Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.36",
    "label": "Screw Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.39",
    "label": "Stacking and Reclaim Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.43",
    "label": "Trough Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.46",
    "label": "Tube Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.49",
    "label": "Vibratory Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 13.53",
    "label": "Weigh-Belt Bulk Material Conveyors",
    "level": 5
  },
  {
    "code": "41 12 16",
    "label": "Bucket Elevators",
    "level": 4
  },
  {
    "code": "41 12 19",
    "label": "Pneumatic Conveyors",
    "level": 4
  },
  {
    "code": "41 12 19.13",
    "label": "Dense Phase Pneumatic Conveyors",
    "level": 5
  },
  {
    "code": "41 12 19.16",
    "label": "Dilute Phase Pneumatic Conveyors",
    "level": 5
  },
  {
    "code": "41 13 00",
    "label": "Bulk Material Feeders",
    "level": 3
  },
  {
    "code": "41 13 13",
    "label": "Bin Activators/Live Bin Bottoms",
    "level": 4
  },
  {
    "code": "41 13 23",
    "label": "Feeders",
    "level": 4
  },
  {
    "code": "41 13 23.13",
    "label": "Airlock Bulk Material Feeders",
    "level": 5
  },
  {
    "code": "41 13 23.16",
    "label": "Apron Bulk Material Feeders",
    "level": 5
  },
  {
    "code": "41 13 23.19",
    "label": "Rotary-Valve Bulk Material Feeders",
    "level": 5
  },
  {
    "code": "41 13 23.23",
    "label": "Screw Bulk Material Feeders",
    "level": 5
  },
  {
    "code": "41 13 23.26",
    "label": "Vibratory Bulk Material Feeders",
    "level": 5
  },
  {
    "code": "41 13 23.29",
    "label": "Volumetric Bulk Material Feeders",
    "level": 5
  },
  {
    "code": "41 13 23.33",
    "label": "Weigh Bulk Material Feeders",
    "level": 5
  },
  {
    "code": "41 14 00",
    "label": "Batching Equipment",
    "level": 3
  },
  {
    "code": "41 14 13",
    "label": "Bag-Handling Batching Equipment",
    "level": 4
  },
  {
    "code": "41 14 16",
    "label": "Batch Cars/Transports",
    "level": 4
  },
  {
    "code": "41 14 19",
    "label": "Batch Hoppers",
    "level": 4
  },
  {
    "code": "41 14 23",
    "label": "Bulk Bag-Handling Batching Equipment",
    "level": 4
  },
  {
    "code": "41 14 26",
    "label": "Blenders",
    "level": 4
  },
  {
    "code": "41 14 29",
    "label": "Drum-Handling Batching Equipment",
    "level": 4
  },
  {
    "code": "41 14 33",
    "label": "Mixers",
    "level": 4
  },
  {
    "code": "41 14 36",
    "label": "Weigh Scales",
    "level": 4
  },
  {
    "code": "41 20 00",
    "label": "Piece Material Handling Equipment",
    "level": 2
  },
  {
    "code": "41 21 00",
    "label": "Conveyors",
    "level": 3
  },
  {
    "code": "41 21 13",
    "label": "Automatic Guided Vehicle Systems",
    "level": 4
  },
  {
    "code": "41 21 23",
    "label": "Piece Material Conveyors",
    "level": 4
  },
  {
    "code": "41 21 23.13",
    "label": "Belt Piece Material Conveyors",
    "level": 5
  },
  {
    "code": "41 21 23.16",
    "label": "Container Piece Material Conveyors",
    "level": 5
  },
  {
    "code": "41 21 23.19",
    "label": "Drag-Chain Piece Material Conveyors",
    "level": 5
  },
  {
    "code": "41 21 23.23",
    "label": "Hopper Piece Material Conveyors",
    "level": 5
  },
  {
    "code": "41 21 23.26",
    "label": "Monorail Piece Material Conveyors",
    "level": 5
  },
  {
    "code": "41 21 23.29",
    "label": "Power and Free Piece Material Conveyors",
    "level": 5
  },
  {
    "code": "41 21 23.33",
    "label": "Reciprocating Piece Material Conveyors",
    "level": 5
  },
  {
    "code": "41 21 23.36",
    "label": "Roller Piece Material Conveyors",
    "level": 5
  },
  {
    "code": "41 21 23.39",
    "label": "Vibratory Piece Material Conveyors",
    "level": 5
  },
  {
    "code": "41 21 23.43",
    "label": "Walking-Beam Piece Material Conveyors",
    "level": 5
  },
  {
    "code": "41 21 23.46",
    "label": "Weigh-Belt Piece Material Conveyors",
    "level": 5
  },
  {
    "code": "41 21 23.53",
    "label": "Postal Conveyors",
    "level": 5
  },
  {
    "code": "41 21 26",
    "label": "Piece Material Diverter Gates",
    "level": 4
  },
  {
    "code": "41 21 29",
    "label": "Piece Material Gravity Slides",
    "level": 4
  },
  {
    "code": "41 21 33",
    "label": "Piece Material Transfer Cars",
    "level": 4
  },
  {
    "code": "41 21 36",
    "label": "Piece Material Turntables",
    "level": 4
  },
  {
    "code": "41 21 39",
    "label": "Piece Material Feeders",
    "level": 4
  },
  {
    "code": "41 21 39.13",
    "label": "Piece Material Vibratory Feeders",
    "level": 5
  },
  {
    "code": "41 22 00",
    "label": "Cranes and Hoists",
    "level": 3
  },
  {
    "code": "41 22 13",
    "label": "Cranes",
    "level": 4
  },
  {
    "code": "41 22 13.13",
    "label": "Bridge Cranes",
    "level": 5
  },
  {
    "code": "41 22 13.16",
    "label": "Gantry Cranes",
    "level": 5
  },
  {
    "code": "41 22 13.19",
    "label": "Jib Cranes",
    "level": 5
  },
  {
    "code": "41 22 13.23",
    "label": "Mobile Cranes",
    "level": 5
  },
  {
    "code": "41 22 13.26",
    "label": "Tower Cranes",
    "level": 5
  },
  {
    "code": "41 22 13.29",
    "label": "Specialty Cranes",
    "level": 5
  },
  {
    "code": "41 22 23",
    "label": "Hoists",
    "level": 4
  },
  {
    "code": "41 22 23.13",
    "label": "Fixed Hoists",
    "level": 5
  },
  {
    "code": "41 22 23.16",
    "label": "Portable Hoists",
    "level": 5
  },
  {
    "code": "41 22 23.19",
    "label": "Monorail Hoists",
    "level": 5
  },
  {
    "code": "41 22 23.23",
    "label": "Specialty Hoists",
    "level": 5
  },
  {
    "code": "41 22 33",
    "label": "Derricks",
    "level": 4
  },
  {
    "code": "41 23 00",
    "label": "Lifting Devices",
    "level": 3
  },
  {
    "code": "41 23 13",
    "label": "Clamps",
    "level": 4
  },
  {
    "code": "41 23 16",
    "label": "Grabs",
    "level": 4
  },
  {
    "code": "41 23 19",
    "label": "Hooks",
    "level": 4
  },
  {
    "code": "41 23 23",
    "label": "Lifts",
    "level": 4
  },
  {
    "code": "41 23 26",
    "label": "Slings",
    "level": 4
  },
  {
    "code": "41 23 29",
    "label": "Spreader Bars/Beams",
    "level": 4
  },
  {
    "code": "41 23 33",
    "label": "Tongs",
    "level": 4
  },
  {
    "code": "41 24 00",
    "label": "Specialty Material Handling Equipment",
    "level": 3
  },
  {
    "code": "41 24 13",
    "label": "Aeration Devices",
    "level": 4
  },
  {
    "code": "41 24 16",
    "label": "Bin Vibrators",
    "level": 4
  },
  {
    "code": "41 24 19",
    "label": "Dehydrators",
    "level": 4
  },
  {
    "code": "41 24 23",
    "label": "Hydrators",
    "level": 4
  },
  {
    "code": "41 24 26",
    "label": "Hydraulic Power Systems",
    "level": 4
  },
  {
    "code": "41 24 29",
    "label": "Lubrication Systems",
    "level": 4
  },
  {
    "code": "41 24 33",
    "label": "Magnetic Separators",
    "level": 4
  },
  {
    "code": "41 24 36",
    "label": "Metal Detectors",
    "level": 4
  },
  {
    "code": "41 24 39",
    "label": "Railcar Movers",
    "level": 4
  },
  {
    "code": "41 24 43",
    "label": "Turnheads/Distributors",
    "level": 4
  },
  {
    "code": "41 24 46",
    "label": "Sorting Machines",
    "level": 4
  },
  {
    "code": "41 24 46.13",
    "label": "Postal Sorting Machines",
    "level": 5
  },
  {
    "code": "41 30 00",
    "label": "Manufacturing Equipment",
    "level": 2
  },
  {
    "code": "41 31 00",
    "label": "Manufacturing Lines and Equipment",
    "level": 3
  },
  {
    "code": "41 31 13",
    "label": "Manufacturing Lines",
    "level": 4
  },
  {
    "code": "41 31 13.13",
    "label": "Assembly Lines",
    "level": 5
  },
  {
    "code": "41 31 13.16",
    "label": "Casting Lines",
    "level": 5
  },
  {
    "code": "41 31 13.19",
    "label": "Coating Lines",
    "level": 5
  },
  {
    "code": "41 31 13.23",
    "label": "Converting Lines",
    "level": 5
  },
  {
    "code": "41 31 13.26",
    "label": "Disassembly Lines",
    "level": 5
  },
  {
    "code": "41 31 13.29",
    "label": "Extrusion Lines",
    "level": 5
  },
  {
    "code": "41 31 13.33",
    "label": "Machining Lines",
    "level": 5
  },
  {
    "code": "41 31 13.36",
    "label": "Molding Lines",
    "level": 5
  },
  {
    "code": "41 31 13.39",
    "label": "Finishing/Painting Lines",
    "level": 5
  },
  {
    "code": "41 31 13.43",
    "label": "Painting Lines",
    "level": 5
  },
  {
    "code": "41 31 13.46",
    "label": "Pickling Lines",
    "level": 5
  },
  {
    "code": "41 31 13.49",
    "label": "Plating Lines",
    "level": 5
  },
  {
    "code": "41 31 13.53",
    "label": "Polishing Lines",
    "level": 5
  },
  {
    "code": "41 31 13.56",
    "label": "Press Lines",
    "level": 5
  },
  {
    "code": "41 31 13.59",
    "label": "Rolling/Calendaring Lines",
    "level": 5
  },
  {
    "code": "41 31 13.63",
    "label": "Web Processing Lines",
    "level": 5
  },
  {
    "code": "41 31 16",
    "label": "Pick and Place Systems",
    "level": 4
  },
  {
    "code": "41 31 19",
    "label": "Manufacturing-Line Robots",
    "level": 4
  },
  {
    "code": "41 31 23",
    "label": "Specialty Assembly Machines",
    "level": 4
  },
  {
    "code": "41 32 00",
    "label": "Forming Equipment",
    "level": 3
  },
  {
    "code": "41 32 13",
    "label": "Bending Equipment",
    "level": 4
  },
  {
    "code": "41 32 16",
    "label": "Blow-Molding Equipment",
    "level": 4
  },
  {
    "code": "41 32 19",
    "label": "Brake-Forming Equipment",
    "level": 4
  },
  {
    "code": "41 32 23",
    "label": "Cold-Forming Equipment",
    "level": 4
  },
  {
    "code": "41 32 26",
    "label": "Die-Casting Equipment",
    "level": 4
  },
  {
    "code": "41 32 29",
    "label": "Drawing Equipment",
    "level": 4
  },
  {
    "code": "41 32 33",
    "label": "Electroforming Equipment",
    "level": 4
  },
  {
    "code": "41 32 36",
    "label": "Forging Equipment",
    "level": 4
  },
  {
    "code": "41 32 39",
    "label": "Extruding Equipment",
    "level": 4
  },
  {
    "code": "41 32 43",
    "label": "Metal-Spinning Equipment",
    "level": 4
  },
  {
    "code": "41 32 46",
    "label": "Piercing Equipment",
    "level": 4
  },
  {
    "code": "41 32 49",
    "label": "Powder Metal-Forming Equipment",
    "level": 4
  },
  {
    "code": "41 32 53",
    "label": "Pressing Equipment",
    "level": 4
  },
  {
    "code": "41 32 56",
    "label": "Roll-Forming Equipment",
    "level": 4
  },
  {
    "code": "41 32 59",
    "label": "Shearing Equipment",
    "level": 4
  },
  {
    "code": "41 32 63",
    "label": "Spinning Equipment",
    "level": 4
  },
  {
    "code": "41 32 66",
    "label": "Stretching/Leveling Equipment",
    "level": 4
  },
  {
    "code": "41 32 69",
    "label": "Swaging Equipment",
    "level": 4
  },
  {
    "code": "41 33 00",
    "label": "Machining Equipment",
    "level": 3
  },
  {
    "code": "41 33 13",
    "label": "Automatic Screw Machining Equipment",
    "level": 4
  },
  {
    "code": "41 33 16",
    "label": "Boring Equipment",
    "level": 4
  },
  {
    "code": "41 33 19",
    "label": "Broaching Equipment",
    "level": 4
  },
  {
    "code": "41 33 23",
    "label": "Drilling Equipment",
    "level": 4
  },
  {
    "code": "41 33 26",
    "label": "Electro-Discharge Machining Equipment",
    "level": 4
  },
  {
    "code": "41 33 29",
    "label": "Grinding Equipment",
    "level": 4
  },
  {
    "code": "41 33 33",
    "label": "Hobbing Equipment",
    "level": 4
  },
  {
    "code": "41 33 36",
    "label": "Lapping Equipment",
    "level": 4
  },
  {
    "code": "41 33 39",
    "label": "Lathe Equipment",
    "level": 4
  },
  {
    "code": "41 33 43",
    "label": "Leveling Equipment",
    "level": 4
  },
  {
    "code": "41 33 46",
    "label": "Machining Center Equipment",
    "level": 4
  },
  {
    "code": "41 33 53",
    "label": "Milling Equipment",
    "level": 4
  },
  {
    "code": "41 33 53.13",
    "label": "Horizontal Milling Equipment",
    "level": 5
  },
  {
    "code": "41 33 53.16",
    "label": "Vertical Milling Equipment",
    "level": 5
  },
  {
    "code": "41 33 60",
    "label": "Multi-Axis Machine Equipment",
    "level": 4
  },
  {
    "code": "41 33 63",
    "label": "Planing Equipment",
    "level": 4
  },
  {
    "code": "41 33 66",
    "label": "Reaming Equipment",
    "level": 4
  },
  {
    "code": "41 33 69",
    "label": "Routing Equipment",
    "level": 4
  },
  {
    "code": "41 33 73",
    "label": "Sawing Equipment",
    "level": 4
  },
  {
    "code": "41 33 76",
    "label": "Shaping Equipment",
    "level": 4
  },
  {
    "code": "41 33 79",
    "label": "Threading Equipment",
    "level": 4
  },
  {
    "code": "41 34 00",
    "label": "Finishing Equipment",
    "level": 3
  },
  {
    "code": "41 34 13",
    "label": "Anodizing Equipment",
    "level": 4
  },
  {
    "code": "41 34 16",
    "label": "Barrel Tumbling Equipment",
    "level": 4
  },
  {
    "code": "41 34 23",
    "label": "Coating Equipment",
    "level": 4
  },
  {
    "code": "41 34 23.13",
    "label": "Diffusion Coating Equipment",
    "level": 5
  },
  {
    "code": "41 34 23.16",
    "label": "Dipping Coating Equipment",
    "level": 5
  },
  {
    "code": "41 34 23.19",
    "label": "Film Coating Equipment",
    "level": 5
  },
  {
    "code": "41 34 23.23",
    "label": "Phosphatizing Coating Equipment",
    "level": 5
  },
  {
    "code": "41 34 23.26",
    "label": "Plasma Coating Equipment",
    "level": 5
  },
  {
    "code": "41 34 23.29",
    "label": "Hardface Welding Coating Equipment",
    "level": 5
  },
  {
    "code": "41 34 23.33",
    "label": "Spray Painting Booth",
    "level": 5
  },
  {
    "code": "41 34 26",
    "label": "Deburring Equipment",
    "level": 4
  },
  {
    "code": "41 34 36",
    "label": "Electroplating Equipment",
    "level": 4
  },
  {
    "code": "41 34 46",
    "label": "Grinding Equipment",
    "level": 4
  },
  {
    "code": "41 34 49",
    "label": "Honing Equipment",
    "level": 4
  },
  {
    "code": "41 34 53",
    "label": "Lapping Equipment",
    "level": 4
  },
  {
    "code": "41 34 56",
    "label": "Shot Peening Equipment",
    "level": 4
  },
  {
    "code": "41 34 59",
    "label": "Superfinishing/Polishing Equipment",
    "level": 4
  },
  {
    "code": "41 35 00",
    "label": "Dies and Molds",
    "level": 3
  },
  {
    "code": "41 35 13",
    "label": "Dies",
    "level": 4
  },
  {
    "code": "41 35 13.13",
    "label": "Drawing Dies",
    "level": 5
  },
  {
    "code": "41 35 13.16",
    "label": "Extrusion Dies",
    "level": 5
  },
  {
    "code": "41 35 13.19",
    "label": "Press Dies",
    "level": 5
  },
  {
    "code": "41 35 13.23",
    "label": "Rotary Dies",
    "level": 5
  },
  {
    "code": "41 35 13.26",
    "label": "Rule Dies",
    "level": 5
  },
  {
    "code": "41 35 33",
    "label": "Molds",
    "level": 4
  },
  {
    "code": "41 36 00",
    "label": "Assembly and Testing Equipment",
    "level": 3
  },
  {
    "code": "41 36 13",
    "label": "Applicators",
    "level": 4
  },
  {
    "code": "41 36 13.13",
    "label": "Adhesive Applicators",
    "level": 5
  },
  {
    "code": "41 36 13.16",
    "label": "Lubricant Applicators",
    "level": 5
  },
  {
    "code": "41 36 13.19",
    "label": "Sealer Applicators",
    "level": 5
  },
  {
    "code": "41 36 16",
    "label": "Fixtures and Jigs",
    "level": 4
  },
  {
    "code": "41 36 19",
    "label": "Joining Equipment",
    "level": 4
  },
  {
    "code": "41 36 19.13",
    "label": "Adhesive Joining Equipment",
    "level": 5
  },
  {
    "code": "41 36 19.16",
    "label": "Arc-Welding Equipment",
    "level": 5
  },
  {
    "code": "41 36 19.19",
    "label": "Brazing Equipment",
    "level": 5
  },
  {
    "code": "41 36 19.23",
    "label": "Resistance-Welding Equipment",
    "level": 5
  },
  {
    "code": "41 36 19.26",
    "label": "Riveting Equipment",
    "level": 5
  },
  {
    "code": "41 36 19.29",
    "label": "Sintering Equipment",
    "level": 5
  },
  {
    "code": "41 36 19.33",
    "label": "Soldering Equipment",
    "level": 5
  },
  {
    "code": "41 36 23",
    "label": "Cutting Equipment",
    "level": 4
  },
  {
    "code": "41 36 23.13",
    "label": "Cutting Torches",
    "level": 5
  },
  {
    "code": "41 36 23.16",
    "label": "High-Pressure Water Cutting Equipment",
    "level": 5
  },
  {
    "code": "41 36 23.19",
    "label": "Laser Cutting Equipment",
    "level": 5
  },
  {
    "code": "41 36 23.23",
    "label": "Plasma Cutting Equipment",
    "level": 5
  },
  {
    "code": "41 36 26",
    "label": "Process Tools",
    "level": 4
  },
  {
    "code": "41 36 26.13",
    "label": "Air Process Tools",
    "level": 5
  },
  {
    "code": "41 36 26.16",
    "label": "Electric Process Tools",
    "level": 5
  },
  {
    "code": "41 36 26.19",
    "label": "Hydraulic Process Tools",
    "level": 5
  },
  {
    "code": "41 36 26.23",
    "label": "Manual Process Tools",
    "level": 5
  },
  {
    "code": "41 36 29",
    "label": "Manufacturing Measurement and Testing Equipment",
    "level": 4
  },
  {
    "code": "41 36 29.13",
    "label": "Gages, Rules, and Blocks",
    "level": 5
  },
  {
    "code": "41 36 29.16",
    "label": "Penetrant Measurement and Testing Equipment",
    "level": 5
  },
  {
    "code": "41 36 29.19",
    "label": "Laser Measurement and Testing Equipment",
    "level": 5
  },
  {
    "code": "41 36 29.23",
    "label": "Magnaflux Measurement and Testing Equipment",
    "level": 5
  },
  {
    "code": "41 36 29.26",
    "label": "Optical Comparators",
    "level": 5
  },
  {
    "code": "41 36 29.29",
    "label": "Profilometers",
    "level": 5
  },
  {
    "code": "41 36 29.33",
    "label": "Radiograph Measurement and Testing Equipment",
    "level": 5
  },
  {
    "code": "41 36 29.36",
    "label": "Surface Tables",
    "level": 5
  },
  {
    "code": "41 36 29.39",
    "label": "Ultrasonic Measurement and Testing Equipment",
    "level": 5
  },
  {
    "code": "41 36 29.43",
    "label": "Test Weigh Scales",
    "level": 5
  },
  {
    "code": "41 40 00",
    "label": "Container Processing and Packaging",
    "level": 2
  },
  {
    "code": "41 41 00",
    "label": "Container Filling and Sealing",
    "level": 3
  },
  {
    "code": "41 41 13",
    "label": "Bulk Container Fillers/Packers",
    "level": 4
  },
  {
    "code": "41 41 16",
    "label": "Container Cappers",
    "level": 4
  },
  {
    "code": "41 41 19",
    "label": "Container Fillers",
    "level": 4
  },
  {
    "code": "41 41 19.13",
    "label": "Bag Fillers",
    "level": 5
  },
  {
    "code": "41 41 19.16",
    "label": "Box Fillers",
    "level": 5
  },
  {
    "code": "41 41 19.19",
    "label": "Bottle Fillers",
    "level": 5
  },
  {
    "code": "41 41 23",
    "label": "Container Sealers",
    "level": 4
  },
  {
    "code": "41 42 00",
    "label": "Container Packing Equipment",
    "level": 3
  },
  {
    "code": "41 42 13",
    "label": "Box Packing Equipment",
    "level": 4
  },
  {
    "code": "41 42 13.13",
    "label": "Box Makers",
    "level": 5
  },
  {
    "code": "41 42 13.16",
    "label": "Box Packers",
    "level": 5
  },
  {
    "code": "41 42 16",
    "label": "Bulk Material Loaders",
    "level": 4
  },
  {
    "code": "41 42 16.13",
    "label": "Container Bulk Material Loaders",
    "level": 5
  },
  {
    "code": "41 42 16.23",
    "label": "Truck Bulk Material Loaders",
    "level": 5
  },
  {
    "code": "41 42 16.26",
    "label": "Railcar Bulk Material Loaders",
    "level": 5
  },
  {
    "code": "41 42 16.29",
    "label": "Ship Bulk Material Loaders",
    "level": 5
  },
  {
    "code": "41 42 16.33",
    "label": "Barge Bulk Material Loaders",
    "level": 5
  },
  {
    "code": "41 42 19",
    "label": "Carton Packers",
    "level": 4
  },
  {
    "code": "41 42 23",
    "label": "Carton Sealers",
    "level": 4
  },
  {
    "code": "41 42 26",
    "label": "Carton Shrink Wrappers",
    "level": 4
  },
  {
    "code": "41 42 29",
    "label": "Carton Stackers",
    "level": 4
  },
  {
    "code": "41 43 00",
    "label": "Shipping Packaging",
    "level": 3
  },
  {
    "code": "41 43 13",
    "label": "Banding/Strapping Equipment",
    "level": 4
  },
  {
    "code": "41 43 16",
    "label": "Barcode Equipment",
    "level": 4
  },
  {
    "code": "41 43 16.13",
    "label": "Barcode Readers",
    "level": 5
  },
  {
    "code": "41 43 16.16",
    "label": "Barcode Printers",
    "level": 5
  },
  {
    "code": "41 43 19",
    "label": "Labeling Equipment",
    "level": 4
  },
  {
    "code": "41 43 23",
    "label": "Pallet Stacking/Wrapping Equipment",
    "level": 4
  },
  {
    "code": "41 50 00",
    "label": "Material Storage",
    "level": 2
  },
  {
    "code": "41 51 00",
    "label": "Automatic Material Storage",
    "level": 3
  },
  {
    "code": "41 51 13",
    "label": "Automatic Storage/Automatic Retrieval Systems",
    "level": 4
  },
  {
    "code": "41 52 00",
    "label": "Bulk Material Storage",
    "level": 3
  },
  {
    "code": "41 52 16.13",
    "label": "Concrete Flat-Bottom Silos",
    "level": 5
  },
  {
    "code": "41 52 16.16",
    "label": "Concrete Masonry Flat-Bottom Silos",
    "level": 5
  },
  {
    "code": "41 52 16.23",
    "label": "Concrete Cone-Bottom Silos",
    "level": 5
  },
  {
    "code": "41 52 16.26",
    "label": "Concrete Masonry Cone-Bottom Silos",
    "level": 5
  },
  {
    "code": "41 52 16.29",
    "label": "Steel Cone-Bottom Silos",
    "level": 5
  },
  {
    "code": "41 52 19",
    "label": "Bulk Materials Storage Tanks",
    "level": 4
  },
  {
    "code": "41 52 19.13",
    "label": "Stationary Bulk Materials Storage Tanks",
    "level": 5
  },
  {
    "code": "41 52 19.33",
    "label": "Mobile Bulk Materials Storage Tanks",
    "level": 5
  },
  {
    "code": "41 52 41",
    "label": "Pneumatic, Block-Distributed Materials Fluidizing System for Flat-Bottom Bins and Silos",
    "level": 4
  },
  {
    "code": "41 52 43",
    "label": "Aerated Trough Materials Fluidizing System for Flat-Bottom Bins and Silos",
    "level": 4
  },
  {
    "code": "41 52 46",
    "label": "Pad-Mounted Aerated Disc Materials Fluidizing System for Cone-Bottom Bins and Silos",
    "level": 4
  },
  {
    "code": "41 53 00",
    "label": "Storage Equipment and Systems",
    "level": 3
  },
  {
    "code": "41 53 13",
    "label": "Storage Cabinets",
    "level": 4
  },
  {
    "code": "41 53 16",
    "label": "Container Storage Systems",
    "level": 4
  },
  {
    "code": "41 53 19",
    "label": "Flat Files",
    "level": 4
  },
  {
    "code": "41 53 23",
    "label": "Storage Racks",
    "level": 4
  },
  {
    "code": "41 53 23.13",
    "label": "Mobile Storage Racks",
    "level": 5
  },
  {
    "code": "41 53 26",
    "label": "Mezzanine Storage Systems",
    "level": 4
  },
  {
    "code": "41 60 00",
    "label": "Mobile Plant Equipment",
    "level": 2
  },
  {
    "code": "41 61 00",
    "label": "Mobile Earth Moving Equipment",
    "level": 3
  },
  {
    "code": "41 61 13",
    "label": "Backhoes",
    "level": 4
  },
  {
    "code": "41 61 16",
    "label": "Bulldozers",
    "level": 4
  },
  {
    "code": "41 61 19",
    "label": "Compactors",
    "level": 4
  },
  {
    "code": "41 61 23",
    "label": "Excavators",
    "level": 4
  },
  {
    "code": "41 61 26",
    "label": "Graders",
    "level": 4
  },
  {
    "code": "41 61 29",
    "label": "Payloaders",
    "level": 4
  },
  {
    "code": "41 61 33",
    "label": "Trenchers",
    "level": 4
  },
  {
    "code": "41 62 00",
    "label": "Trucks",
    "level": 3
  },
  {
    "code": "41 62 13",
    "label": "Cement Mixer Trucks",
    "level": 4
  },
  {
    "code": "41 62 16",
    "label": "Dump Trucks",
    "level": 4
  },
  {
    "code": "41 62 19",
    "label": "Flatbed Trucks",
    "level": 4
  },
  {
    "code": "41 62 23",
    "label": "Forklift Trucks",
    "level": 4
  },
  {
    "code": "41 62 26",
    "label": "Pickup Trucks",
    "level": 4
  },
  {
    "code": "41 62 29",
    "label": "Tank Trucks",
    "level": 4
  },
  {
    "code": "41 63 00",
    "label": "General Vehicles",
    "level": 3
  },
  {
    "code": "41 63 13",
    "label": "Bicycles",
    "level": 4
  },
  {
    "code": "41 63 16",
    "label": "Carts",
    "level": 4
  },
  {
    "code": "41 63 19",
    "label": "Maintenance Vehicles",
    "level": 4
  },
  {
    "code": "41 63 23",
    "label": "Utility Vehicles",
    "level": 4
  },
  {
    "code": "41 63 26",
    "label": "Vans",
    "level": 4
  },
  {
    "code": "41 63 29",
    "label": "Wagons",
    "level": 4
  },
  {
    "code": "41 64 00",
    "label": "Rail Vehicles",
    "level": 3
  },
  {
    "code": "41 64 13",
    "label": "Locomotives",
    "level": 4
  },
  {
    "code": "41 64 13.13",
    "label": "Diesel Locomotives",
    "level": 5
  },
  {
    "code": "41 64 13.23",
    "label": "Electric Locomotives",
    "level": 5
  },
  {
    "code": "41 64 16",
    "label": "Mobile Railcar Movers",
    "level": 4
  },
  {
    "code": "41 65 00",
    "label": "Mobile Support Equipment",
    "level": 3
  },
  {
    "code": "41 65 13",
    "label": "Mobile Air Compressors",
    "level": 4
  },
  {
    "code": "41 65 16",
    "label": "Mobile Generators",
    "level": 4
  },
  {
    "code": "41 65 19",
    "label": "Mobile Welders",
    "level": 4
  },
  {
    "code": "41 66 00",
    "label": "Miscellaneous Mobile Equipment",
    "level": 3
  },
  {
    "code": "41 66 13",
    "label": "Mobile Boring and Drilling Rigs",
    "level": 4
  },
  {
    "code": "41 66 16",
    "label": "Mobile Lifts and Cherrypickers",
    "level": 4
  },
  {
    "code": "41 66 19",
    "label": "Mobile Paving Equipment",
    "level": 4
  },
  {
    "code": "41 66 23",
    "label": "Mobile Sweepers/Vacuums",
    "level": 4
  },
  {
    "code": "41 67 00",
    "label": "Plant Maintenance Equipment",
    "level": 3
  },
  {
    "code": "41 67 13",
    "label": "Plant Lube Oil System",
    "level": 4
  },
  {
    "code": "41 67 16",
    "label": "Plant Fall Protection Equipment",
    "level": 4
  },
  {
    "code": "41 67 19",
    "label": "Plant Safety Equipment",
    "level": 4
  },
  {
    "code": "41 67 23",
    "label": "Plant Maintenance Tools",
    "level": 4
  },
  {
    "code": "41 67 26",
    "label": "Plant Maintenance Washing Equipment",
    "level": 4
  },
  {
    "code": "42 00 00",
    "label": "Process Heating, Cooling, and Drying Equipment",
    "level": 1
  },
  {
    "code": "42 01 00",
    "label": "Operation and Maintenance of Process Heating, Cooling, and Drying Equipment",
    "level": 3
  },
  {
    "code": "42 01 10",
    "label": "Operation and Maintenance of Process Heating Equipment",
    "level": 4
  },
  {
    "code": "42 01 20",
    "label": "Operation and Maintenance of Process Cooling Equipment",
    "level": 4
  },
  {
    "code": "42 01 30",
    "label": "Operation and Maintenance of Process Drying Equipment",
    "level": 4
  },
  {
    "code": "42 05 00",
    "label": "Common Work Results for Process Heating, Cooling, and Drying Equipment",
    "level": 3
  },
  {
    "code": "42 05 05",
    "label": "Selective Demolition for Process Heating, Cooling, and Drying Equipment",
    "level": 4
  },
  {
    "code": "42 06 00",
    "label": "Schedules for Process Heating, Cooling, and Drying Equipment",
    "level": 3
  },
  {
    "code": "42 06 10",
    "label": "Schedules for Process Heating Equipment",
    "level": 4
  },
  {
    "code": "42 06 20",
    "label": "Schedules for Process Cooling Equipment",
    "level": 4
  },
  {
    "code": "42 06 30",
    "label": "Schedules for Process Drying Equipment",
    "level": 4
  },
  {
    "code": "42 08 00",
    "label": "Commissioning of Process Heating, Cooling, and Drying Equipment",
    "level": 3
  },
  {
    "code": "42 08 10",
    "label": "Commissioning of Heating Equipment",
    "level": 4
  },
  {
    "code": "42 08 20",
    "label": "Commissioning of Cooling Equipment",
    "level": 4
  },
  {
    "code": "42 08 30",
    "label": "Commissioning of Drying Equipment",
    "level": 4
  },
  {
    "code": "42 10 00",
    "label": "Process Heating Equipment",
    "level": 2
  },
  {
    "code": "42 11 00",
    "label": "Process Boilers",
    "level": 3
  },
  {
    "code": "42 11 13",
    "label": "Low-Pressure Process Boilers",
    "level": 4
  },
  {
    "code": "42 11 16",
    "label": "Intermediate-Pressure Process Boilers",
    "level": 4
  },
  {
    "code": "42 11 19",
    "label": "High-Pressure Process Boilers",
    "level": 4
  },
  {
    "code": "42 11 23",
    "label": "Specialty Process Boilers",
    "level": 4
  },
  {
    "code": "42 12 00",
    "label": "Process Heaters",
    "level": 3
  },
  {
    "code": "42 12 13",
    "label": "Electric Process Heaters",
    "level": 4
  },
  {
    "code": "42 12 16",
    "label": "Fuel-Fired Process Heaters",
    "level": 4
  },
  {
    "code": "42 12 19",
    "label": "Thermoelectric Process Heaters",
    "level": 4
  },
  {
    "code": "42 12 23",
    "label": "Solar Process Heaters",
    "level": 4
  },
  {
    "code": "42 12 26",
    "label": "Specialty Process Heaters",
    "level": 4
  },
  {
    "code": "42 13 00",
    "label": "Industrial Heat Exchangers and Recuperators",
    "level": 3
  },
  {
    "code": "42 13 13",
    "label": "Industrial Gas-to-Gas Heat Exchangers",
    "level": 4
  },
  {
    "code": "42 13 16",
    "label": "Industrial Liquid-to-Gas/Gas-to-Liquid Heat Exchangers",
    "level": 4
  },
  {
    "code": "42 13 19",
    "label": "Industrial Liquid-to-Liquid Heat Exchangers",
    "level": 4
  },
  {
    "code": "42 13 23",
    "label": "Industrial Gas Radiation Heat Exchangers",
    "level": 4
  },
  {
    "code": "42 13 26",
    "label": "Industrial Solar Radiation Heat Exchangers",
    "level": 4
  },
  {
    "code": "42 14 00",
    "label": "Industrial Furnaces",
    "level": 3
  },
  {
    "code": "42 14 13",
    "label": "Annealing Furnaces",
    "level": 4
  },
  {
    "code": "42 14 16",
    "label": "Atmosphere Generators",
    "level": 4
  },
  {
    "code": "42 14 19",
    "label": "Industrial Baking Furnaces",
    "level": 4
  },
  {
    "code": "42 14 23",
    "label": "Industrial Brazing Furnaces",
    "level": 4
  },
  {
    "code": "42 14 26",
    "label": "Industrial Calcining Furnaces",
    "level": 4
  },
  {
    "code": "42 14 29",
    "label": "Industrial Heat-Treating Furnaces",
    "level": 4
  },
  {
    "code": "42 14 33",
    "label": "Industrial Melting Furnaces",
    "level": 4
  },
  {
    "code": "42 14 33.13",
    "label": "Ceramics and Glass Melting Furnaces",
    "level": 5
  },
  {
    "code": "42 14 33.16",
    "label": "Ferrous Melting Furnaces",
    "level": 5
  },
  {
    "code": "42 14 33.19",
    "label": "Non-Ferrous Melting Furnaces",
    "level": 5
  },
  {
    "code": "42 14 36",
    "label": "Primary Refining Furnaces",
    "level": 4
  },
  {
    "code": "42 14 43",
    "label": "Reactor Furnaces",
    "level": 4
  },
  {
    "code": "42 14 46",
    "label": "Industrial Reheat Furnaces",
    "level": 4
  },
  {
    "code": "42 14 53",
    "label": "Industrial Sintering Furnaces",
    "level": 4
  },
  {
    "code": "42 14 56",
    "label": "Industrial Vacuum Furnaces",
    "level": 4
  },
  {
    "code": "42 15 00",
    "label": "Industrial Ovens",
    "level": 3
  },
  {
    "code": "42 15 13",
    "label": "Industrial Drying Ovens",
    "level": 4
  },
  {
    "code": "42 15 16",
    "label": "Industrial Curing Ovens",
    "level": 4
  },
  {
    "code": "42 15 19",
    "label": "Industrial Specialty Ovens",
    "level": 4
  },
  {
    "code": "42 20 00",
    "label": "Process Cooling Equipment",
    "level": 2
  },
  {
    "code": "42 21 00",
    "label": "Process Cooling Towers",
    "level": 3
  },
  {
    "code": "42 21 13",
    "label": "Open-Circuit Process Cooling Towers",
    "level": 4
  },
  {
    "code": "42 21 16",
    "label": "Closed-Circuit Process Cooling Towers",
    "level": 4
  },
  {
    "code": "42 22 00",
    "label": "Process Chillers and Coolers",
    "level": 3
  },
  {
    "code": "42 22 13",
    "label": "Centrifugal Process Chillers and Coolers",
    "level": 4
  },
  {
    "code": "42 22 16",
    "label": "Reciprocating Process Chillers and Coolers",
    "level": 4
  },
  {
    "code": "42 22 19",
    "label": "Refrigerant Process Chillers and Coolers",
    "level": 4
  },
  {
    "code": "42 22 23",
    "label": "Rotary Process Chillers and Coolers",
    "level": 4
  },
  {
    "code": "42 22 26",
    "label": "Thermoelectric Process Chillers and Coolers",
    "level": 4
  },
  {
    "code": "42 23 00",
    "label": "Process Condensers and Evaporators",
    "level": 3
  },
  {
    "code": "42 23 13",
    "label": "Process Condensers",
    "level": 4
  },
  {
    "code": "42 23 16",
    "label": "Process Cooling Evaporators",
    "level": 4
  },
  {
    "code": "42 23 19",
    "label": "Process Humidifiers",
    "level": 4
  },
  {
    "code": "42 30 00",
    "label": "Process Drying Equipment",
    "level": 2
  },
  {
    "code": "42 31 00",
    "label": "Gas Dryers and Dehumidifiers",
    "level": 3
  },
  {
    "code": "42 31 13",
    "label": "Drying Evaporators",
    "level": 4
  },
  {
    "code": "42 31 16",
    "label": "Desiccant Equipment",
    "level": 4
  },
  {
    "code": "42 31 19",
    "label": "Regenerative Dryers",
    "level": 4
  },
  {
    "code": "42 31 23",
    "label": "Refrigerant Dryers",
    "level": 4
  },
  {
    "code": "42 32 00",
    "label": "Material Dryers",
    "level": 3
  },
  {
    "code": "42 32 13",
    "label": "Centrifugal Material Dryers",
    "level": 4
  },
  {
    "code": "42 32 16",
    "label": "Conveyor Material Dryers",
    "level": 4
  },
  {
    "code": "42 32 19",
    "label": "Flash Material Dryers",
    "level": 4
  },
  {
    "code": "42 32 23",
    "label": "Fluid-Bed Material Dryers",
    "level": 4
  },
  {
    "code": "42 32 26",
    "label": "Material Roasters",
    "level": 4
  },
  {
    "code": "42 32 29",
    "label": "Rotary-Kiln Material Dryers",
    "level": 4
  },
  {
    "code": "42 32 33",
    "label": "Spray Material Dryers",
    "level": 4
  },
  {
    "code": "42 32 36",
    "label": "Tower Material Dryers",
    "level": 4
  },
  {
    "code": "42 32 39",
    "label": "Vacuum Material Dryers",
    "level": 4
  },
  {
    "code": "42 32 43",
    "label": "Specialty Material Dryers",
    "level": 4
  },
  {
    "code": "43 00 00",
    "label": "Process Gas and Liquid Handling, Purification, and Storage Equipment",
    "level": 1
  },
  {
    "code": "43 01 00",
    "label": "Operation and Maintenance of Process Gas and Liquid Handling, Purification, and Storage Equipment",
    "level": 3
  },
  {
    "code": "43 01 10",
    "label": "Operation and Maintenance of Gas Handling Equipment",
    "level": 4
  },
  {
    "code": "43 01 10.13",
    "label": "Gas Blowers Maintenance and Rehabilitation",
    "level": 5
  },
  {
    "code": "43 01 10.16",
    "label": "Gas Compressors Maintenance and Rehabilitation",
    "level": 5
  },
  {
    "code": "43 01 20",
    "label": "Operation and Maintenance of Liquid Handling Equipment",
    "level": 4
  },
  {
    "code": "43 01 20.13",
    "label": "Liquid Pumps Maintenance and Rehabilitation",
    "level": 5
  },
  {
    "code": "43 01 20.16",
    "label": "Liquid Process Equipment Maintenance and Rehabilitation",
    "level": 5
  },
  {
    "code": "43 01 30",
    "label": "Operation and Maintenance of Gas and Liquid Hi-Purification Equipment",
    "level": 4
  },
  {
    "code": "43 01 40",
    "label": "Operation and Maintenance of Gas and Liquid Storage",
    "level": 4
  },
  {
    "code": "43 01 40.13",
    "label": "Non-pressurized Tanks Cleaning, Maintenance, and Rehabilitation",
    "level": 5
  },
  {
    "code": "43 01 40.16",
    "label": "Pressurized Tanks Cleaning, Maintenance, and Rehabilitation",
    "level": 5
  },
  {
    "code": "43 05 00",
    "label": "Common Work Results for Process Gas and Liquid Handling",
    "level": 3
  },
  {
    "code": "43 05 05",
    "label": "Selective Demolition for Process Gas and Liquid Handling, Purification, and Storage Equipment.",
    "level": 4
  },
  {
    "code": "43 05 10",
    "label": "Common Work Results for Gas Handling Equipment",
    "level": 4
  },
  {
    "code": "43 05 20",
    "label": "Common Work Results for Liquid Handling Equipment",
    "level": 4
  },
  {
    "code": "43 05 30",
    "label": "Common Work Results for Gas and Liquid Hi-Purification Equipment",
    "level": 4
  },
  {
    "code": "43 05 40",
    "label": "Common Work Results for Gas and Liquid Storage",
    "level": 4
  },
  {
    "code": "43 06 00",
    "label": "Schedules for Process Gas and Liquid Handling, Purification, and Storage Equipment",
    "level": 3
  },
  {
    "code": "43 06 10",
    "label": "Schedules for Gas Handling Equipment",
    "level": 4
  },
  {
    "code": "43 06 20",
    "label": "Schedules for Liquid Handling Equipment",
    "level": 4
  },
  {
    "code": "43 06 30",
    "label": "Schedules for Gas and Liquid Hi-Purification Equipment",
    "level": 4
  },
  {
    "code": "43 06 40",
    "label": "Schedules for Gas and Liquid Storage",
    "level": 4
  },
  {
    "code": "43 08 00",
    "label": "Commissioning of Process Gas and Liquid Handling, Purification, and Storage Equipment",
    "level": 3
  },
  {
    "code": "43 08 10",
    "label": "Commissioning of Gas Handling Equipment",
    "level": 4
  },
  {
    "code": "43 08 20",
    "label": "Commissioning of Liquid Handling Equipment",
    "level": 4
  },
  {
    "code": "43 08 30",
    "label": "Commissioning of Gas and Liquid Purification Equipment",
    "level": 4
  },
  {
    "code": "43 08 40",
    "label": "Commissioning of Gas and Liquid Storage",
    "level": 4
  },
  {
    "code": "43 10 00",
    "label": "Gas Handling Equipment",
    "level": 2
  },
  {
    "code": "43 11 00",
    "label": "Gas Fans, Blowers, Pumps and Boosters",
    "level": 3
  },
  {
    "code": "43 11 11",
    "label": "Direct Drive Single Stage Centrifugal Blowers",
    "level": 4
  },
  {
    "code": "43 11 12",
    "label": "Integrally Geared Single Stage Centrifugal Blowers",
    "level": 4
  },
  {
    "code": "43 11 13",
    "label": "Separately Geared Single Stage Centrifugal Blowers",
    "level": 4
  },
  {
    "code": "43 11 14",
    "label": "Direct Drive Integral Shaft Single Stage Centrifugal Blowers",
    "level": 4
  },
  {
    "code": "43 11 17",
    "label": "Horizontally Split Multistage Centrifugal Blowers",
    "level": 4
  },
  {
    "code": "43 11 18",
    "label": "Vertically Split Multistage Centrifugal Blowers",
    "level": 4
  },
  {
    "code": "43 11 19",
    "label": "Centrifugal Fans",
    "level": 4
  },
  {
    "code": "43 11 23",
    "label": "Axial Blowers",
    "level": 4
  },
  {
    "code": "43 11 26",
    "label": "Axial Fans",
    "level": 4
  },
  {
    "code": "43 11 31",
    "label": "Rotary Helical Screw Blowers",
    "level": 4
  },
  {
    "code": "43 11 33",
    "label": "Rotary Lobe Blowers",
    "level": 4
  },
  {
    "code": "43 11 34",
    "label": "Regenerative Rotary Blowers",
    "level": 4
  },
  {
    "code": "43 11 36",
    "label": "Rotary Vane Blowers",
    "level": 4
  },
  {
    "code": "43 11 41",
    "label": "Gas-handling Venturi Jet Pumps",
    "level": 4
  },
  {
    "code": "43 11 43",
    "label": "Gas-handling Vacuum Pumps",
    "level": 4
  },
  {
    "code": "43 11 46",
    "label": "Gas Boosters",
    "level": 4
  },
  {
    "code": "43 12 00",
    "label": "Gas Compressors",
    "level": 3
  },
  {
    "code": "43 12 11",
    "label": "Centrifugal Compressors",
    "level": 4
  },
  {
    "code": "43 12 13",
    "label": "Diagonal or Mixed-flow Compressors",
    "level": 4
  },
  {
    "code": "43 12 16",
    "label": "Axial-flow Compressors",
    "level": 4
  },
  {
    "code": "43 12 33",
    "label": "Single-acting Reciprocating Compressors",
    "level": 4
  },
  {
    "code": "43 12 34",
    "label": "Double-acting Reciprocating Compressors",
    "level": 4
  },
  {
    "code": "43 12 37",
    "label": "Diaphragm Reciprocating Compressors",
    "level": 4
  },
  {
    "code": "43 12 51",
    "label": "Rotary Screw Compressors",
    "level": 4
  },
  {
    "code": "43 12 53",
    "label": "Rotary Vane Compressors",
    "level": 4
  },
  {
    "code": "43 12 56",
    "label": "Rotary Liquid-ring Compressors",
    "level": 4
  },
  {
    "code": "43 12 57",
    "label": "Rotary Scroll Compressors",
    "level": 4
  },
  {
    "code": "43 13 00",
    "label": "Gas Process Equipment",
    "level": 3
  },
  {
    "code": "43 13 13",
    "label": "Gas Blenders",
    "level": 4
  },
  {
    "code": "43 13 19",
    "label": "Gas Mixers",
    "level": 4
  },
  {
    "code": "43 13 23",
    "label": "Gas Pressure Regulators",
    "level": 4
  },
  {
    "code": "43 13 31",
    "label": "Gas Separation Equipment",
    "level": 4
  },
  {
    "code": "43 13 33",
    "label": "Gas Dehydration Equipment",
    "level": 4
  },
  {
    "code": "43 13 36",
    "label": "Combined Gas Separation and Dehydration Equipment",
    "level": 4
  },
  {
    "code": "43 13 39",
    "label": "Gas Recovery and Condensing Equipment",
    "level": 4
  },
  {
    "code": "43 13 43",
    "label": "Waste Gas Burner System",
    "level": 4
  },
  {
    "code": "43 13 46",
    "label": "Gas Control and Safety Equipment",
    "level": 4
  },
  {
    "code": "43 15 00",
    "label": "Process Air and Gas Filters",
    "level": 3
  },
  {
    "code": "43 15 13",
    "label": "Blower Intake and Turbine Air Filters",
    "level": 4
  },
  {
    "code": "43 15 13.13",
    "label": "Static Prefilters",
    "level": 5
  },
  {
    "code": "43 15 13.16",
    "label": "Static Final Filters",
    "level": 5
  },
  {
    "code": "43 15 13.19",
    "label": "Static HEPA Filters",
    "level": 5
  },
  {
    "code": "43 15 13.23",
    "label": "Pulse Filters",
    "level": 5
  },
  {
    "code": "43 15 33",
    "label": "Grease Filters",
    "level": 4
  },
  {
    "code": "43 15 43",
    "label": "Mist Eliminators",
    "level": 4
  },
  {
    "code": "43 15 63",
    "label": "High-temperature Air Filters",
    "level": 4
  },
  {
    "code": "43 15 73",
    "label": "Multiple-application Air Filters",
    "level": 4
  },
  {
    "code": "43 15 73.11",
    "label": "Air Filter Media",
    "level": 5
  },
  {
    "code": "43 15 73.12",
    "label": "Permanent Washable Filters",
    "level": 5
  },
  {
    "code": "43 15 73.13",
    "label": "Poly-ring Air Filters",
    "level": 5
  },
  {
    "code": "43 15 73.15",
    "label": "Rigid Cell Filters",
    "level": 5
  },
  {
    "code": "43 15 73.17",
    "label": "Automatic Roll-type Air Filters",
    "level": 5
  },
  {
    "code": "43 15 76",
    "label": "Chemical Media for Air and Gas Filters",
    "level": 4
  },
  {
    "code": "43 20 00",
    "label": "Liquid Handling Equipment",
    "level": 2
  },
  {
    "code": "43 22 00",
    "label": "Liquid Process Equipment",
    "level": 3
  },
  {
    "code": "43 22 13",
    "label": "Liquid Aeration Devices",
    "level": 4
  },
  {
    "code": "43 22 16",
    "label": "Liquid Agitators",
    "level": 4
  },
  {
    "code": "43 22 19",
    "label": "Liquid Blenders",
    "level": 4
  },
  {
    "code": "43 22 23",
    "label": "Liquid Centrifuges",
    "level": 4
  },
  {
    "code": "43 22 26",
    "label": "Liquid Deaerators",
    "level": 4
  },
  {
    "code": "43 22 29",
    "label": "Drum Handling Liquid Process Equipment",
    "level": 4
  },
  {
    "code": "43 22 33",
    "label": "Liquid Emulsifiers",
    "level": 4
  },
  {
    "code": "43 22 36",
    "label": "Liquid Evaporators",
    "level": 4
  },
  {
    "code": "43 22 39",
    "label": "Liquid Feeders",
    "level": 4
  },
  {
    "code": "43 22 56",
    "label": "Liquid Process Mixers",
    "level": 4
  },
  {
    "code": "43 22 59",
    "label": "Liquid Process Pressure Regulators",
    "level": 4
  },
  {
    "code": "43 22 63",
    "label": "Liquid Separation Towers",
    "level": 4
  },
  {
    "code": "43 22 66",
    "label": "Liquid Weigh Systems",
    "level": 4
  },
  {
    "code": "43 22 69",
    "label": "Liquid Grease Receiving and Dewatering Systems",
    "level": 4
  },
  {
    "code": "43 22 73",
    "label": "Liquid Fillers",
    "level": 4
  },
  {
    "code": "43 22 76",
    "label": "Liquid Screeners",
    "level": 4
  },
  {
    "code": "43 22 79",
    "label": "Liquid Clarifiers",
    "level": 4
  },
  {
    "code": "43 22 83",
    "label": "Liquid Classifiers",
    "level": 4
  },
  {
    "code": "43 22 86",
    "label": "Liquid Homogenizers",
    "level": 4
  },
  {
    "code": "43 22 89",
    "label": "Liquid Presses",
    "level": 4
  },
  {
    "code": "43 22 96",
    "label": "Liquid Versators",
    "level": 4
  },
  {
    "code": "43 22 99",
    "label": "Liquid Votators",
    "level": 4
  },
  {
    "code": "43 23 00",
    "label": "Dry Location Liquid Pumps",
    "level": 3
  },
  {
    "code": "43 23 13",
    "label": "Overhung Horizontal Centrifugal Pumps",
    "level": 4
  },
  {
    "code": "43 23 13.13",
    "label": "Overhung Flexibly-coupled Horizontal Axial Flow Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 13.14",
    "label": "Overhung Flexibly-coupled Horizontal Frame-mounted Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 13.17",
    "label": "Overhung Flexibly-coupled Horizontal Foot-mounted Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 13.19",
    "label": "Overhung Flexibly-coupled Horizontal Foot-mounted Self-priming Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 13.21",
    "label": "Overhung Flexibly-coupled Horizontal Centerline-mounted Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 13.23",
    "label": "Overhung Flexibly-coupled, Magnetic Drive, Sealless Horizontal Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 13.24",
    "label": "Overhung Close-coupled High-speed Integral Gear Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 13.27",
    "label": "Overhung Close-coupled Horizontal Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 13.29",
    "label": "Overhung Close-coupled Sealless with Canned Motor Horizontal Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 21",
    "label": "Between-Bearings Impeller Centrifugal Pumps",
    "level": 4
  },
  {
    "code": "43 23 21.13",
    "label": "Between-bearings Impeller, One- and Two-stage Axially-split Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 21.14",
    "label": "Between-bearings Impeller, One- and Two-stage, Radially-split Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 21.17",
    "label": "Between-bearings Impeller, Multiple-stage, Axially-split Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 21.19",
    "label": "Between-bearings Impeller, Multiple-stage, Radially-split Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 21.21",
    "label": "Between-bearings Impeller, Multiple-stage, Radially-split, Single Casing Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 21.23",
    "label": "Between-bearings Impeller, Multiple-stage, Radially-split, Double Casing Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 31",
    "label": "Vertical Centrifugal Pumps",
    "level": 4
  },
  {
    "code": "43 23 31.13",
    "label": "Overhung Flexibly-coupled Vertical Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 31.14",
    "label": "Overhung Flexibly-coupled Vertical Inline Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 31.17",
    "label": "Overhung Flexibly-coupled Vertical End-suction Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 31.19",
    "label": "Overhung Flexibly-coupled, Magnetic Drive, Sealless Vertical Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 31.21",
    "label": "Overhung Close-coupled Vertical Inline Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 31.23",
    "label": "Overhung Close-coupled Vertical End Suction Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 31.24",
    "label": "Overhung Close-coupled Sealless with Canned Motor Vertical Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 31.27",
    "label": "Overhung Rigidly-coupled Vertical Inline Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 31.29",
    "label": "Overhung Close-coupled Vertical Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 23 51",
    "label": "Vane Pumps",
    "level": 4
  },
  {
    "code": "43 23 53",
    "label": "Piston Pumps",
    "level": 4
  },
  {
    "code": "43 23 53.13",
    "label": "Piston Axial Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 53.23",
    "label": "Piston Radial Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 53.33",
    "label": "Circumferential Single-Piston Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 53.36",
    "label": "Circumferential Multiple-Piston Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 54",
    "label": "Flexible Member Pumps",
    "level": 4
  },
  {
    "code": "43 23 54.13",
    "label": "Flexible Tube Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 54.23",
    "label": "Flexible Vane Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 54.33",
    "label": "Flexible Liner Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 56",
    "label": "Gear Pumps",
    "level": 4
  },
  {
    "code": "43 23 56.13",
    "label": "External Gear Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 56.23",
    "label": "Internal Gear Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 57",
    "label": "Progressing Cavity Pumps",
    "level": 4
  },
  {
    "code": "43 23 58",
    "label": "Lobe Pumps",
    "level": 4
  },
  {
    "code": "43 23 58.13",
    "label": "Single-Lobe Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 58.23",
    "label": "Multiple-Lobe Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 59",
    "label": "Screw Pumps",
    "level": 4
  },
  {
    "code": "43 23 59.13",
    "label": "Single-Screw Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 59.23",
    "label": "Multiple-Screw Rotary Pumps",
    "level": 5
  },
  {
    "code": "43 23 71",
    "label": "Air-Operated Diaphragm Reciprocating Pumps",
    "level": 4
  },
  {
    "code": "43 23 71.13",
    "label": "Air-Operated Diaphragm Simplex Single-Acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 71.23",
    "label": "Air-Operated Diaphragm Simplex Double-Acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 71.33",
    "label": "Air-Operated Diaphragm Duplex Single-acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 71.43",
    "label": "Air-Operated Diaphragm Duplex Double-acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 72",
    "label": "Air-Operated Bellows Reciprocating Pumps",
    "level": 4
  },
  {
    "code": "43 23 72.13",
    "label": "Air-Operated Bellows Simplex Single-Acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 72.23",
    "label": "Air-Operated Bellows Simplex Double-Acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 72.33",
    "label": "Air-Operated Bellows Duplex Single-Acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 72.43",
    "label": "Air-Operated Bellows Duplex Double-Acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 73",
    "label": "Air-Operated Piston Reciprocating Pumps",
    "level": 4
  },
  {
    "code": "43 23 73.13",
    "label": "Air-Operated Piston Simplex Single-Acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 73.23",
    "label": "Air-Operated Piston Simplex Double-Acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 73.33",
    "label": "Air-Operated Piston Duplex Single-Acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 73.43",
    "label": "Air-Operated Piston Duplex Double-Acting Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 74",
    "label": "Steam Horizontal Reciprocating Pumps",
    "level": 4
  },
  {
    "code": "43 23 74.13",
    "label": "Steam Horizontal Double-Acting Piston Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 74.23",
    "label": "Steam Horizontal Double-Acting Piston Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 74.33",
    "label": "Steam Horizontal Double-Acting Plunger Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 74.43",
    "label": "Steam Horizontal Double-Acting Plunger Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 75",
    "label": "Steam Vertical Reciprocating Pumps",
    "level": 4
  },
  {
    "code": "43 23 75.13",
    "label": "Steam Vertical Double-Acting Piston Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 75.23",
    "label": "Steam Vertical Double-Acting Piston Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 75.33",
    "label": "Steam Vertical Double-Acting Plunger Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 75.43",
    "label": "Steam Vertical Double-acting Plunger Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76",
    "label": "Power Horizontal Reciprocating Pumps",
    "level": 4
  },
  {
    "code": "43 23 76.11",
    "label": "Power Horizontal Single-Acting Piston Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76.12",
    "label": "Power Horizontal Single-Acting Piston Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76.13",
    "label": "Power Horizontal Single-Acting Piston Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76.21",
    "label": "Power Horizontal Single-Acting Plunger Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76.22",
    "label": "Power Horizontal Single-Acting Plunger Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76.23",
    "label": "Power Horizontal Single-Acting Plunger Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76.31",
    "label": "Power Horizontal Double-Acting Piston Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76.32",
    "label": "Power Horizontal Double-Acting Piston Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76.33",
    "label": "Power Horizontal Double-Acting Piston Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76.41",
    "label": "Power Horizontal Double-Acting Plunger Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76.42",
    "label": "Power Horizontal Double-Acting Plunger Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 76.43",
    "label": "Power Horizontal Double-Acting Plunger Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77",
    "label": "Power Vertical Reciprocating Pumps",
    "level": 4
  },
  {
    "code": "43 23 77.11",
    "label": "Power Vertical Single-Acting Piston Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77.12",
    "label": "Power Vertical Single-Acting Piston Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77.13",
    "label": "Power Vertical Single-Acting Piston Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77.21",
    "label": "Power Vertical Single-Acting Plunger Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77.22",
    "label": "Power Vertical Single-Acting Plunger Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77.23",
    "label": "Power Vertical Single-Acting Plunger Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77.31",
    "label": "Power Vertical Double-Acting Piston Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77.32",
    "label": "Power Vertical Double-Acting Piston Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77.33",
    "label": "Power Vertical Double-Acting Piston Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77.41",
    "label": "Power Vertical Double-Acting Plunger Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77.42",
    "label": "Power Vertical Double-Acting Plunger Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 77.43",
    "label": "Power Vertical Double-Acting Plunger Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78",
    "label": "Controlled Volume Horizontal Reciprocating Pumps",
    "level": 4
  },
  {
    "code": "43 23 78.11",
    "label": "Controlled Volume Horizontal Packed Plunger Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78.12",
    "label": "Controlled Volume Horizontal Packed Plunger Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78.13",
    "label": "Controlled Volume Horizontal Packed Plunger Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78.21",
    "label": "Controlled Volume Horizontal Packed Piston Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78.22",
    "label": "Controlled Volume Horizontal Packed Piston Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78.23",
    "label": "Controlled Volume Horizontal Packed Piston Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78.31",
    "label": "Controlled Volume Horizontal Mechanically-Coupled Diaphragm Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78.32",
    "label": "Controlled Volume Horizontal Mechanically-Coupled Diaphragm Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78.33",
    "label": "Controlled Volume Horizontal Mechanically-Coupled Diaphragm Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78.34",
    "label": "Controlled Volume Horizontal Hydraulically-Coupled Diaphragm Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78.35",
    "label": "Controlled Volume Horizontal Hydraulically-Coupled Diaphragm Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 78.36",
    "label": "Controlled Volume Horizontal Hydraulically-Coupled Diaphragm Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79",
    "label": "Controlled Volume Vertical Reciprocating Pumps",
    "level": 4
  },
  {
    "code": "43 23 79.11",
    "label": "Controlled Volume Vertical Packed Plunger Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79.12",
    "label": "Controlled Volume Vertical Packed Plunger Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79.13",
    "label": "Controlled Volume Vertical Packed Plunger Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79.21",
    "label": "Controlled Volume Vertical Packed Piston Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79.22",
    "label": "Controlled Volume Vertical Packed Piston Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79.23",
    "label": "Controlled Volume Vertical Packed Piston Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79.31",
    "label": "Controlled Volume Vertical Mechanically-Coupled Diaphragm Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79.32",
    "label": "Controlled Volume Vertical Mechanically-Coupled Diaphragm Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79.33",
    "label": "Controlled Volume Vertical Mechanically-Coupled Diaphragm Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79.34",
    "label": "Controlled Volume Vertical Hydraulically-Coupled Diaphragm Simplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79.35",
    "label": "Controlled Volume Vertical Hydraulically-Coupled Diaphragm Duplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 23 79.36",
    "label": "Controlled Volume Vertical Hydraulically-Coupled Diaphragm Multiplex Reciprocating Pumps",
    "level": 5
  },
  {
    "code": "43 24 00",
    "label": "Suspended Liquid Pumps",
    "level": 3
  },
  {
    "code": "43 24 11",
    "label": "Vertically Suspended Single-Casing Submersible Centrifugal Pumps",
    "level": 4
  },
  {
    "code": "43 24 13",
    "label": "Vertically Suspended Single-Casing Discharge-through-column Centrifugal Pumps",
    "level": 4
  },
  {
    "code": "43 24 13.13",
    "label": "Vertically Suspended Single-Casing Discharge-through-column Diffuser Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 24 13.23",
    "label": "Vertically Suspended Single-Casing Discharge-through-column Volute Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 24 13.33",
    "label": "Vertically Suspended Single-Casing Discharge-through-column Axial Flow Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 24 16",
    "label": "Vertically Suspended Single-casing Separate Discharge (Sump) Centrifugal Pumps",
    "level": 4
  },
  {
    "code": "43 24 16.13",
    "label": "Vertically Suspended Single-Casing Separate Discharge (Sump) Line Shaft Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 24 16.23",
    "label": "Vertically Suspended Single-Casing Separate Discharge (Sump) Cantilever Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 24 21",
    "label": "Vertically Suspended Double-Casing Centrifugal Pumps",
    "level": 4
  },
  {
    "code": "43 24 21.13",
    "label": "Vertically Suspended Double-Casing Diffuser Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 24 21.23",
    "label": "Vertically Suspended Double-Casing Volute Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 24 26",
    "label": "Vertically Suspended Inline Casing Diffuser Centrifugal Pumps",
    "level": 4
  },
  {
    "code": "43 24 41",
    "label": "Archimedes Screw Pumps",
    "level": 4
  },
  {
    "code": "43 24 41.13",
    "label": "Positive-Displacement Inclined Open Archimedes Screw-type Pumps",
    "level": 5
  },
  {
    "code": "43 24 41.23",
    "label": "Positive-Displacement Inclined Closed-casing Archimedes Screw-type Pumps",
    "level": 5
  },
  {
    "code": "43 25 00",
    "label": "Submersible/Immersible Liquid Pumps",
    "level": 3
  },
  {
    "code": "43 25 13",
    "label": "Overhung Close-Coupled Submersible Centrifugal Pumps",
    "level": 4
  },
  {
    "code": "43 25 13.13",
    "label": "Overhung Close-Coupled Submersible Diffuser Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 25 13.23",
    "label": "Overhung Close-Coupled Submersible Volute Centrifugal Pumps",
    "level": 5
  },
  {
    "code": "43 25 50",
    "label": "Positive Displacement Submersible Liquid Pumps",
    "level": 4
  },
  {
    "code": "43 26 00",
    "label": "Specialized Liquid Pumps",
    "level": 3
  },
  {
    "code": "43 26 13",
    "label": "Submersible Grinder Pumps",
    "level": 4
  },
  {
    "code": "43 26 30",
    "label": "Regenerative Centrifugal Pumps",
    "level": 4
  },
  {
    "code": "43 26 30.13",
    "label": "Overhung Impeller Regenerative Turbine Pumps",
    "level": 5
  },
  {
    "code": "43 26 30.21",
    "label": "Overhung Impeller Single-Stage Regenerative Turbine Pumps",
    "level": 5
  },
  {
    "code": "43 26 30.23",
    "label": "Overhung Impeller Two-Stage Regenerative Turbine Pumps",
    "level": 5
  },
  {
    "code": "43 26 30.26",
    "label": "Between-Bearings Impeller Regenerative Turbine Pumps",
    "level": 5
  },
  {
    "code": "43 26 30.27",
    "label": "Between-Bearings Impeller Single-Stage Regenerative Turbine Pumps",
    "level": 5
  },
  {
    "code": "43 26 30.29",
    "label": "Between-Bearings Impeller Two-Stage Regenerative Turbine Pumps",
    "level": 5
  },
  {
    "code": "43 26 40",
    "label": "Regenerative Turbine Pumps",
    "level": 4
  },
  {
    "code": "43 26 60",
    "label": "Regenerative Vacuum Pumps",
    "level": 4
  },
  {
    "code": "43 26 70",
    "label": "Rotating-Case Pumps",
    "level": 4
  },
  {
    "code": "43 27 00",
    "label": "Process Liquid Filters",
    "level": 3
  },
  {
    "code": "43 27 13",
    "label": "Cyclonic Liquid Filters",
    "level": 4
  },
  {
    "code": "43 27 16",
    "label": "Centrifugal Horizontal Pressure Leaf Liquid Filters",
    "level": 4
  },
  {
    "code": "43 27 19",
    "label": "Press Liquid Filters",
    "level": 4
  },
  {
    "code": "43 27 23",
    "label": "Liquid Bag Filters",
    "level": 4
  },
  {
    "code": "43 27 33",
    "label": "Mechanically Cleaned Liquid Filters",
    "level": 4
  },
  {
    "code": "43 27 43",
    "label": "Tubular Backwashing Liquid Filters",
    "level": 4
  },
  {
    "code": "43 27 53",
    "label": "Vacuum Belt Liquid Filters",
    "level": 4
  },
  {
    "code": "43 27 63",
    "label": "Woven Media Liquid Filters",
    "level": 4
  },
  {
    "code": "43 27 63.13",
    "label": "Disc Liquid Filters",
    "level": 5
  },
  {
    "code": "43 27 63.23",
    "label": "Rotating Drum Liquid Filters",
    "level": 5
  },
  {
    "code": "43 27 63.33",
    "label": "Layer Liquid Filters",
    "level": 5
  },
  {
    "code": "43 27 63.43",
    "label": "Candle Liquid Filters",
    "level": 5
  },
  {
    "code": "43 27 63.53",
    "label": "Vertical Leaf Liquid Filters",
    "level": 5
  },
  {
    "code": "43 27 73",
    "label": "Nonwoven Media Liquid Filters",
    "level": 4
  },
  {
    "code": "43 27 73.13",
    "label": "Surface Liquid Filters",
    "level": 5
  },
  {
    "code": "43 27 73.23",
    "label": "Depth Liquid Filters",
    "level": 5
  },
  {
    "code": "43 30 00",
    "label": "Gas and Liquid Purification Equipment",
    "level": 2
  },
  {
    "code": "43 31 00",
    "label": "Gas and Liquid Purification Filtration Equipment",
    "level": 3
  },
  {
    "code": "43 31 13",
    "label": "Gas and Liquid Purification Filters",
    "level": 4
  },
  {
    "code": "43 31 13.13",
    "label": "Activated Carbon-Gas and Liquid Purification Filters",
    "level": 5
  },
  {
    "code": "43 31 13.16",
    "label": "Gas and Liquid Purification Filter Presses",
    "level": 5
  },
  {
    "code": "43 31 13.19",
    "label": "High-Purity Cartridge Gas and Liquid Purification Filters",
    "level": 5
  },
  {
    "code": "43 31 13.23",
    "label": "Membrane Diaphragm Gas and Liquid Purification Filters",
    "level": 5
  },
  {
    "code": "43 31 13.26",
    "label": "Multimedia Gas and Liquid Purification Filters",
    "level": 5
  },
  {
    "code": "43 31 13.29",
    "label": "Pretreatment Cartridge Gas and Liquid Purification Filters",
    "level": 5
  },
  {
    "code": "43 31 13.33",
    "label": "Ultrafilter Units",
    "level": 5
  },
  {
    "code": "43 32 00",
    "label": "Gas and Liquid Purification Process Equipment",
    "level": 3
  },
  {
    "code": "43 32 13",
    "label": "Gas and Liquid Purification Process Beds",
    "level": 4
  },
  {
    "code": "43 32 13.13",
    "label": "Anion-Gas and Liquid Purification Process Beds",
    "level": 5
  },
  {
    "code": "43 32 13.16",
    "label": "Cation-Gas and Liquid Purification Process Beds",
    "level": 5
  },
  {
    "code": "43 32 23",
    "label": "Gas and Liquid Purification Process Clarifier Systems",
    "level": 4
  },
  {
    "code": "43 32 26",
    "label": "Gas and Liquid Purification Decarbonators",
    "level": 4
  },
  {
    "code": "43 32 29",
    "label": "Electronic Deionization Purification Units",
    "level": 4
  },
  {
    "code": "43 32 33",
    "label": "External Regeneration Systems",
    "level": 4
  },
  {
    "code": "43 32 36",
    "label": "Mixed-Bed Ion-Exchange Vessels",
    "level": 4
  },
  {
    "code": "43 32 39",
    "label": "Gas and Liquid Purification Mixed Beds",
    "level": 4
  },
  {
    "code": "43 32 39.13",
    "label": "Externally Regenerable Gas and Liquid Purification Mixed Beds",
    "level": 5
  },
  {
    "code": "43 32 39.16",
    "label": "In-Situ Regenerable Gas and Liquid Purification Mixed Beds",
    "level": 5
  },
  {
    "code": "43 32 53",
    "label": "Packed-Bed Ion-Exchange Vessels",
    "level": 4
  },
  {
    "code": "43 32 56",
    "label": "Reverse-Osmosis Purification Units",
    "level": 4
  },
  {
    "code": "43 32 59",
    "label": "Gas and Liquid Purification Scrubbers",
    "level": 4
  },
  {
    "code": "43 32 63",
    "label": "Ultraviolet Sterilizers",
    "level": 4
  },
  {
    "code": "43 32 66",
    "label": "Vacuum Degasifiers",
    "level": 4
  },
  {
    "code": "43 32 69",
    "label": "Chemical Feed Systems",
    "level": 4
  },
  {
    "code": "43 32 73",
    "label": "Ozonation Equipment",
    "level": 4
  },
  {
    "code": "43 32 76",
    "label": "Chlorination Equipment",
    "level": 4
  },
  {
    "code": "43 40 00",
    "label": "Gas and Liquid Storage",
    "level": 2
  },
  {
    "code": "43 41 00",
    "label": "Non-pressurized Tanks and Vessels",
    "level": 3
  },
  {
    "code": "43 41 11",
    "label": "Bolted Steel Tanks",
    "level": 4
  },
  {
    "code": "43 41 13",
    "label": "Welded Steel Tanks",
    "level": 4
  },
  {
    "code": "43 41 13.13",
    "label": "Glass-lined Welded Steel Tanks",
    "level": 5
  },
  {
    "code": "43 41 13.23",
    "label": "Rubber-lined Welded Steel Tanks",
    "level": 5
  },
  {
    "code": "43 41 13.33",
    "label": "Epoxy-lined Welded Steel Tanks",
    "level": 5
  },
  {
    "code": "43 41 13.43",
    "label": "Ceramic-lined Welded Steel Tanks",
    "level": 5
  },
  {
    "code": "43 41 23",
    "label": "Stainless Steel Tanks",
    "level": 4
  },
  {
    "code": "43 41 26",
    "label": "Aluminum Tanks",
    "level": 4
  },
  {
    "code": "43 41 31",
    "label": "Metallic Specialty Tanks",
    "level": 4
  },
  {
    "code": "43 41 41",
    "label": "Polyvinyl Chloride Tanks",
    "level": 4
  },
  {
    "code": "43 41 43",
    "label": "Polyethylene Tanks",
    "level": 4
  },
  {
    "code": "43 41 45",
    "label": "Fiberglass Reinforced Plastic Tanks",
    "level": 4
  },
  {
    "code": "43 41 53",
    "label": "Wood Stave Tanks",
    "level": 4
  },
  {
    "code": "43 41 63",
    "label": "Precast Concrete Tanks",
    "level": 4
  },
  {
    "code": "43 41 73",
    "label": "Ceramic Tanks",
    "level": 4
  },
  {
    "code": "43 41 83",
    "label": "Non-metallic Specialty Tanks",
    "level": 4
  },
  {
    "code": "43 42 00",
    "label": "Pressurized Tanks and Vessels",
    "level": 3
  },
  {
    "code": "43 42 11",
    "label": "Cast Iron Pressure Tanks",
    "level": 4
  },
  {
    "code": "43 42 13",
    "label": "Ductile Iron Pressure Tanks",
    "level": 4
  },
  {
    "code": "43 42 21",
    "label": "Welded Steel Pressure Tanks",
    "level": 4
  },
  {
    "code": "43 42 23",
    "label": "Glass-lined Steel Pressure Tanks",
    "level": 4
  },
  {
    "code": "43 42 26",
    "label": "Welded Steel Gas Storage Sphere",
    "level": 4
  },
  {
    "code": "43 42 33",
    "label": "Stainless Steel Pressure Tanks",
    "level": 4
  },
  {
    "code": "43 42 36",
    "label": "Aluminum Pressure Tanks",
    "level": 4
  },
  {
    "code": "43 42 41",
    "label": "Metallic Specialty Pressure Tanks",
    "level": 4
  },
  {
    "code": "43 42 53",
    "label": "Fiberglass Reinforced Plastic Pressure Tanks",
    "level": 4
  },
  {
    "code": "43 42 83",
    "label": "Non-metallic Specialty Pressure Tanks",
    "level": 4
  },
  {
    "code": "44 00 00",
    "label": "Pollution and Waste Control Equipment",
    "level": 1
  },
  {
    "code": "44 01 00",
    "label": "Operation and Maintenance of Pollution and Waste Control Equipment",
    "level": 3
  },
  {
    "code": "44 01 10",
    "label": "Operation and Maintenance of Air Pollution Control",
    "level": 4
  },
  {
    "code": "44 01 20",
    "label": "Operation and Maintenance of Noise Pollution Control",
    "level": 4
  },
  {
    "code": "44 01 30",
    "label": "Operation and Maintenance of Odor Control Equipment",
    "level": 4
  },
  {
    "code": "44 01 40",
    "label": "Operation and Maintenance of Water Pollution Control Equipment",
    "level": 4
  },
  {
    "code": "44 01 50",
    "label": "Operation and Maintenance of Solid Waste Control and Reuse",
    "level": 4
  },
  {
    "code": "44 01 60",
    "label": "Operation and Maintenance of Waste Thermal Processing Equipment",
    "level": 4
  },
  {
    "code": "44 05 00",
    "label": "Common Work Results for Pollution and Waste Control Equipment",
    "level": 3
  },
  {
    "code": "44 05 05",
    "label": "Selective Demolition for Pollution and Waste Control Equipment",
    "level": 4
  },
  {
    "code": "44 06 00",
    "label": "Schedules for Pollution and Waste Control Equipment",
    "level": 3
  },
  {
    "code": "44 06 10",
    "label": "Schedules for Air Pollution Control",
    "level": 4
  },
  {
    "code": "44 06 20",
    "label": "Schedules for Noise Pollution Control",
    "level": 4
  },
  {
    "code": "44 06 30",
    "label": "Schedules for Odor Control Equipment",
    "level": 4
  },
  {
    "code": "44 06 40",
    "label": "Schedules for Water Pollution Control Equipment",
    "level": 4
  },
  {
    "code": "44 06 50",
    "label": "Schedules for Solid Waste Control and Reuse",
    "level": 4
  },
  {
    "code": "44 06 60",
    "label": "Schedules for Waste Thermal Processing Equipment",
    "level": 4
  },
  {
    "code": "44 08 00",
    "label": "Commissioning of Pollution and Waste Control Equipment",
    "level": 3
  },
  {
    "code": "44 08 10",
    "label": "Commissioning of Air Pollution Control",
    "level": 4
  },
  {
    "code": "44 08 20",
    "label": "Commissioning of Noise Pollution Control",
    "level": 4
  },
  {
    "code": "44 08 30",
    "label": "Commissioning of Odor Control Equipment",
    "level": 4
  },
  {
    "code": "44 08 40",
    "label": "Commissioning Water Pollution Control Equipment",
    "level": 4
  },
  {
    "code": "44 08 50",
    "label": "Commissioning Solid Waste Control and Reuse",
    "level": 4
  },
  {
    "code": "44 08 60",
    "label": "Commissioning of Waste Thermal Processing Equipment",
    "level": 4
  },
  {
    "code": "44 10 00",
    "label": "Air Pollution Control",
    "level": 2
  },
  {
    "code": "44 11 00",
    "label": "Particulate Control Equipment",
    "level": 3
  },
  {
    "code": "44 11 13",
    "label": "Fugitive Dust Control",
    "level": 4
  },
  {
    "code": "44 11 16",
    "label": "Fugitive Dust Barrier Systems",
    "level": 4
  },
  {
    "code": "44 11 19",
    "label": "Atmospheric Air Quality Monitoring Equipment",
    "level": 4
  },
  {
    "code": "44 11 20",
    "label": "Gravitational Separators",
    "level": 4
  },
  {
    "code": "44 11 31",
    "label": "Venturi Scrubbing Equipment",
    "level": 4
  },
  {
    "code": "44 11 33",
    "label": "Spray Tower/Chamber Scrubbing Equipment",
    "level": 4
  },
  {
    "code": "44 11 36",
    "label": "Cyclone Scrubbing Equipment",
    "level": 4
  },
  {
    "code": "44 11 51",
    "label": "Pulse Jet Fabric Filtration Equipment",
    "level": 4
  },
  {
    "code": "44 11 53",
    "label": "Reverse Flow Fabric Filtration Equipment",
    "level": 4
  },
  {
    "code": "44 11 54",
    "label": "Shake/Deflate Fabric Filtration Equipment",
    "level": 4
  },
  {
    "code": "44 11 56",
    "label": "Cartridge Filtration Equipment",
    "level": 4
  },
  {
    "code": "44 11 59",
    "label": "Disposable Dry Filtration Equipment",
    "level": 4
  },
  {
    "code": "44 11 71",
    "label": "Cyclone Dust Collection Equipment",
    "level": 4
  },
  {
    "code": "44 11 73",
    "label": "Multicylone Dust Collection Equipment",
    "level": 4
  },
  {
    "code": "44 11 76",
    "label": "Mist Elimination Equipment",
    "level": 4
  },
  {
    "code": "44 11 93",
    "label": "Wet Electrostatic Precipitator Equipment",
    "level": 4
  },
  {
    "code": "44 11 96",
    "label": "Dry Plate Electrostatic Precipitator Equipment",
    "level": 4
  },
  {
    "code": "44 13 00",
    "label": "Gaseous Air Pollution Control Equipment",
    "level": 3
  },
  {
    "code": "44 13 11",
    "label": "Spray Tower/Chamber Absorption Equipment",
    "level": 4
  },
  {
    "code": "44 13 13",
    "label": "Packed Tower/Chamber Absorption Equipment",
    "level": 4
  },
  {
    "code": "44 13 14",
    "label": "Tray Tower Absorption Equipment",
    "level": 4
  },
  {
    "code": "44 13 16",
    "label": "Jet Bubbling Reactor Equipment",
    "level": 4
  },
  {
    "code": "44 13 17",
    "label": "Venturi Absorption Equipment",
    "level": 4
  },
  {
    "code": "44 13 20",
    "label": "Vacuum Extraction Systems",
    "level": 4
  },
  {
    "code": "44 13 31",
    "label": "Powdered Injection Adsorption Equipment",
    "level": 4
  },
  {
    "code": "44 13 33",
    "label": "Fluidized Bed Adsorption Equipment",
    "level": 4
  },
  {
    "code": "44 13 34",
    "label": "Fixed Bed Adsorption Equipment",
    "level": 4
  },
  {
    "code": "44 13 36",
    "label": "Rotary Bed Adsorption Equipment",
    "level": 4
  },
  {
    "code": "44 13 39",
    "label": "Radial Bed Adsorption Equipment",
    "level": 4
  },
  {
    "code": "44 13 51",
    "label": "Thermal Oxidation Equipment",
    "level": 4
  },
  {
    "code": "44 13 53",
    "label": "Catalytic Oxidation Equipment",
    "level": 4
  },
  {
    "code": "44 13 56",
    "label": "Flare Oxidation Equipment",
    "level": 4
  },
  {
    "code": "44 13 59",
    "label": "Claus Sulfur Recovery Equipment",
    "level": 4
  },
  {
    "code": "44 13 71",
    "label": "Thermal Reduction Equipment",
    "level": 4
  },
  {
    "code": "44 13 73",
    "label": "Catalytic Reduction Equipment",
    "level": 4
  },
  {
    "code": "44 13 76",
    "label": "Non-catalytic Reduction Equipment",
    "level": 4
  },
  {
    "code": "44 13 77",
    "label": "Selective Non-catalytic Reduction Equipment",
    "level": 4
  },
  {
    "code": "44 13 81",
    "label": "Condensation Systems",
    "level": 4
  },
  {
    "code": "44 13 83",
    "label": "Contact Condensing Equipment",
    "level": 4
  },
  {
    "code": "44 13 86",
    "label": "Solvent Recovery Equipment",
    "level": 4
  },
  {
    "code": "44 13 91",
    "label": "Biofilter Media",
    "level": 4
  },
  {
    "code": "44 13 93",
    "label": "Fixed Bed Biofilter Equipment",
    "level": 4
  },
  {
    "code": "44 13 96",
    "label": "Fixed Bed Biotrickling Filter Equipment",
    "level": 4
  },
  {
    "code": "44 13 97",
    "label": "Fixed Bed Bioscrubbing Equipment",
    "level": 4
  },
  {
    "code": "44 20 00",
    "label": "Noise Pollution Control",
    "level": 2
  },
  {
    "code": "44 21 00",
    "label": "Noise Pollution Control Equipment",
    "level": 3
  },
  {
    "code": "44 21 13",
    "label": "Fixed Noise Abatement Barriers",
    "level": 4
  },
  {
    "code": "44 21 16",
    "label": "Flexible Noise Abatement Barriers",
    "level": 4
  },
  {
    "code": "44 21 19",
    "label": "Portable Noise Abatement Barriers",
    "level": 4
  },
  {
    "code": "44 21 23",
    "label": "Noise Pollution Silencers",
    "level": 4
  },
  {
    "code": "44 21 26",
    "label": "Frequency Cancellers",
    "level": 4
  },
  {
    "code": "44 30 00",
    "label": "Odor Control",
    "level": 2
  },
  {
    "code": "44 31 00",
    "label": "Odor Treatment Equipment",
    "level": 3
  },
  {
    "code": "44 31 11",
    "label": "Wet Chemical Packed Tower Odor Control Equipment",
    "level": 4
  },
  {
    "code": "44 31 13",
    "label": "Chemical Mist System Odor Control Equipment",
    "level": 4
  },
  {
    "code": "44 31 16",
    "label": "Activated Carbon Adsorption Odor Control Equipment",
    "level": 4
  },
  {
    "code": "44 31 19",
    "label": "Packaged Odor Control Systems",
    "level": 4
  },
  {
    "code": "44 31 21",
    "label": "Odor Control Biofilters",
    "level": 4
  },
  {
    "code": "44 31 28",
    "label": "Odor Control Biofilter Aeration Floor",
    "level": 4
  },
  {
    "code": "44 31 29",
    "label": "Odor Control Biofilter Media",
    "level": 4
  },
  {
    "code": "44 31 31",
    "label": "Odor Control Biotrickling Filter Equipment",
    "level": 4
  },
  {
    "code": "44 31 33",
    "label": "Odor Control Bioscrubbing Equipment",
    "level": 4
  },
  {
    "code": "44 31 41",
    "label": "Odor Control Vapor Combustion Equipment",
    "level": 4
  },
  {
    "code": "44 31 83",
    "label": "Adjusting and Balancing Odor Control Systems",
    "level": 4
  },
  {
    "code": "44 32 00",
    "label": "Odor Dispersing and Masking/Counteracting Equipment",
    "level": 3
  },
  {
    "code": "44 32 13",
    "label": "Odor Dispersing Exhaust Stacks",
    "level": 4
  },
  {
    "code": "44 32 13.13",
    "label": "Fan-equipped Odor Dispersing Exhaust Stacks",
    "level": 5
  },
  {
    "code": "44 32 23",
    "label": "Odor Masking/Counteracting Equipment",
    "level": 4
  },
  {
    "code": "44 40 00",
    "label": "Water Pollution Control Equipment",
    "level": 2
  },
  {
    "code": "44 41 00",
    "label": "Water Pollution Containment and Cleanup Equipment",
    "level": 3
  },
  {
    "code": "44 41 13",
    "label": "Spill Cleanup",
    "level": 4
  },
  {
    "code": "44 41 21",
    "label": "Containment Booms",
    "level": 4
  },
  {
    "code": "44 41 23",
    "label": "Marine Spill Accessories",
    "level": 4
  },
  {
    "code": "44 41 31",
    "label": "Spill Decks",
    "level": 4
  },
  {
    "code": "44 41 32",
    "label": "Drum Containment Units",
    "level": 4
  },
  {
    "code": "44 41 33",
    "label": "Containment Pallets",
    "level": 4
  },
  {
    "code": "44 41 34",
    "label": "Prefabricated Spill Containment Curbing",
    "level": 4
  },
  {
    "code": "44 41 36",
    "label": "Prefabricated Spill Containment Berms",
    "level": 4
  },
  {
    "code": "44 41 37",
    "label": "Prefabricated Berms for Tank Containment",
    "level": 4
  },
  {
    "code": "44 41 41",
    "label": "Collapsible Storage Tanks",
    "level": 4
  },
  {
    "code": "44 50 00",
    "label": "Solid Waste Control and Reuse",
    "level": 2
  },
  {
    "code": "44 51 00",
    "label": "Solid Waste Collection, Transfer, and Hauling Equipment",
    "level": 3
  },
  {
    "code": "44 51 13",
    "label": "Solid Waste Portable Containers",
    "level": 4
  },
  {
    "code": "44 51 16",
    "label": "Solid Waste Stationary Containers",
    "level": 4
  },
  {
    "code": "44 51 23",
    "label": "Solid Waste Transfer Trailers",
    "level": 4
  },
  {
    "code": "44 53 00",
    "label": "Solid Waste Processing Equipment",
    "level": 3
  },
  {
    "code": "44 53 11",
    "label": "Live-floor Storage Bins",
    "level": 4
  },
  {
    "code": "44 53 13",
    "label": "Refuse Cranes and Accessories",
    "level": 4
  },
  {
    "code": "44 53 16",
    "label": "Solid Waste Screens",
    "level": 4
  },
  {
    "code": "44 53 21",
    "label": "Car Crushers",
    "level": 4
  },
  {
    "code": "44 53 23",
    "label": "Shears and Guillotines",
    "level": 4
  },
  {
    "code": "44 53 26",
    "label": "Shredders and Grinders",
    "level": 4
  },
  {
    "code": "44 53 27",
    "label": "Perforators",
    "level": 4
  },
  {
    "code": "44 53 31",
    "label": "Bag Breakers",
    "level": 4
  },
  {
    "code": "44 53 33",
    "label": "Granulators",
    "level": 4
  },
  {
    "code": "44 53 36",
    "label": "Crumb Rubber Systems",
    "level": 4
  },
  {
    "code": "44 53 39",
    "label": "Briquetters",
    "level": 4
  },
  {
    "code": "44 53 41",
    "label": "Vibratory Table Separation Equipment",
    "level": 4
  },
  {
    "code": "44 53 43",
    "label": "Ferrous Metals Separation Equipment",
    "level": 4
  },
  {
    "code": "44 53 44",
    "label": "Eddy Current Separators",
    "level": 4
  },
  {
    "code": "44 53 46",
    "label": "Single-stream Materials Separation Equipment",
    "level": 4
  },
  {
    "code": "44 53 49",
    "label": "Ballistic Separators",
    "level": 4
  },
  {
    "code": "44 53 51",
    "label": "Air Classifying Equipment",
    "level": 4
  },
  {
    "code": "44 53 52",
    "label": "Air Knives",
    "level": 4
  },
  {
    "code": "44 53 53",
    "label": "Optical Sorting Equipment",
    "level": 4
  },
  {
    "code": "44 53 56",
    "label": "Packaged Sorting Stations",
    "level": 4
  },
  {
    "code": "44 53 59",
    "label": "Packaged Reclaimer Stations",
    "level": 4
  },
  {
    "code": "44 53 61",
    "label": "Solid Waste Compactors",
    "level": 4
  },
  {
    "code": "44 53 63",
    "label": "Solid Waste Baling Equipment",
    "level": 4
  },
  {
    "code": "44 53 64",
    "label": "Bagging Equipment",
    "level": 4
  },
  {
    "code": "44 53 66",
    "label": "Wrappers",
    "level": 4
  },
  {
    "code": "44 53 73",
    "label": "Solid Waste Liquid Extraction Equipment",
    "level": 4
  },
  {
    "code": "44 55 00",
    "label": "Composting Equipment",
    "level": 3
  },
  {
    "code": "44 55 11",
    "label": "Electromechanical Composters",
    "level": 4
  },
  {
    "code": "44 55 13",
    "label": "Compost Screening Equipment",
    "level": 4
  },
  {
    "code": "44 55 16",
    "label": "Compost Shredding Equipment",
    "level": 4
  },
  {
    "code": "44 55 23",
    "label": "Compost Pile Turning Equipment",
    "level": 4
  },
  {
    "code": "44 55 26",
    "label": "Compost Mixing and Blending Equipment",
    "level": 4
  },
  {
    "code": "44 55 33",
    "label": "In-vessel Composing Equipment",
    "level": 4
  },
  {
    "code": "44 55 43",
    "label": "Compost Pad System",
    "level": 4
  },
  {
    "code": "44 55 73",
    "label": "Compost Liquid Extraction Equipment",
    "level": 4
  },
  {
    "code": "44 60 00",
    "label": "Waste Thermal Processing Equipment",
    "level": 2
  },
  {
    "code": "44 61 00",
    "label": "Waste-to-Energy Plants",
    "level": 3
  },
  {
    "code": "44 61 13",
    "label": "Waste Receiving, Management, and Feed Equipment",
    "level": 4
  },
  {
    "code": "44 61 16",
    "label": "Mass Burn Combustion Equipment",
    "level": 4
  },
  {
    "code": "44 61 23",
    "label": "Refuse-derived Fuel Feed Equipment",
    "level": 4
  },
  {
    "code": "44 61 26",
    "label": "Refuse-derived Fuel Combustion Equipment",
    "level": 4
  },
  {
    "code": "44 61 29",
    "label": "Modular Combustion System Equipment",
    "level": 4
  },
  {
    "code": "44 61 31",
    "label": "Ash Handling Equipment",
    "level": 4
  },
  {
    "code": "44 61 33",
    "label": "Post-combustion Ferrous Metals Recovery Equipment",
    "level": 4
  },
  {
    "code": "44 61 36",
    "label": "Post-combustion Non-ferrous Metals Recovery Equipment",
    "level": 4
  },
  {
    "code": "44 62 00",
    "label": "Fluidized Bed Combustion Equipment",
    "level": 3
  },
  {
    "code": "44 63 00",
    "label": "Rotary Kiln Incinerators",
    "level": 3
  },
  {
    "code": "44 64 00",
    "label": "Gasification Equipment",
    "level": 3
  },
  {
    "code": "44 64 13",
    "label": "Counter-current Fixed Bed Gasification Equipment",
    "level": 4
  },
  {
    "code": "44 64 23",
    "label": "Co-current Fixed Bed Gasification Equipment",
    "level": 4
  },
  {
    "code": "44 64 33",
    "label": "Fluidized Bed Gasification Equipment",
    "level": 4
  },
  {
    "code": "44 64 43",
    "label": "Entrained Flow Gasification Equipment",
    "level": 4
  },
  {
    "code": "44 64 53",
    "label": "Plasma Arc Gasification Equipment",
    "level": 4
  },
  {
    "code": "44 65 00",
    "label": "Pyrolysis Equipment",
    "level": 3
  },
  {
    "code": "44 66 00",
    "label": "Hazardous Waste and Medical Waste Incinerators",
    "level": 3
  },
  {
    "code": "44 67 00",
    "label": "Heat Recovery Equipment for Waste Thermal Processing",
    "level": 3
  },
  {
    "code": "44 68 00",
    "label": "Synthesis Gas Cleanup and Handling Equipment",
    "level": 3
  },
  {
    "code": "45 00 00",
    "label": "Industry-Specific Manufacturing Equipment",
    "level": 1
  },
  {
    "code": "45 05 00",
    "label": "Common Work Results for Industry-Specific Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 05 05",
    "label": "Selective Demolition for Industry-Specific Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 08 00",
    "label": "Commissioning of Industry-Specific Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 11 00",
    "label": "Oil and Gas Extraction Equipment",
    "level": 3
  },
  {
    "code": "45 11 01",
    "label": "Operation and Maintenance of Oil and Gas Extraction Equipment",
    "level": 4
  },
  {
    "code": "45 11 06",
    "label": "Schedules for Oil and Gas Extraction Equipment",
    "level": 4
  },
  {
    "code": "45 11 10",
    "label": "User-Defined Oil and Gas Extraction Equipment",
    "level": 4
  },
  {
    "code": "45 12 00",
    "label": "User-Defined Oil and Gas Extraction Equipment",
    "level": 3
  },
  {
    "code": "45 13 00",
    "label": "Mining Machinery and Equipment",
    "level": 3
  },
  {
    "code": "45 13 01",
    "label": "Operation and Maintenance of Mining Machinery and Equipment",
    "level": 4
  },
  {
    "code": "45 13 06",
    "label": "Schedules for Mining Machinery and Equipment",
    "level": 4
  },
  {
    "code": "45 13 10",
    "label": "User-Defined Mining Machinery and Equipment",
    "level": 4
  },
  {
    "code": "45 14 00",
    "label": "User-Defined Mining Machinery and Equipment",
    "level": 3
  },
  {
    "code": "45 15 00",
    "label": "Food Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 15 01",
    "label": "Operation and Maintenance of Food Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 15 06",
    "label": "Schedules for Food Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 15 10",
    "label": "User-Defined Food Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 16 00",
    "label": "User-Defined Food Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 17 00",
    "label": "Beverage and Tobacco Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 17 01",
    "label": "Operation and Maintenance of Beverage and Tobacco Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 17 06",
    "label": "Schedules for Beverage and Tobacco Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 17 10",
    "label": "User-Defined Beverage and Tobacco Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 18 00",
    "label": "User-Defined Beverage and Tobacco Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 19 00",
    "label": "Textiles and Apparel Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 19 01",
    "label": "Operation and Maintenance of Textiles and Apparel Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 19 06",
    "label": "Schedules for Textiles and Apparel Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 19 10",
    "label": "User-Defined Textiles and Apparel Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 20 00",
    "label": "User-Defined Textiles and Apparel Manufacturing Equipment",
    "level": 2
  },
  {
    "code": "45 21 00",
    "label": "Leather and Allied Product Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 21 01",
    "label": "Operation and Maintenance of Leather and Allied Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 21 06",
    "label": "Schedules for Leather and Allied Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 21 10",
    "label": "User-Defined Leather and Allied Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 22 00",
    "label": "User-Defined Leather and Allied Product Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 23 00",
    "label": "Wood Product Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 23 01",
    "label": "Operation and Maintenance of Wood Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 23 06",
    "label": "Schedules for Wood Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 23 10",
    "label": "User-Defined Wood Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 24 00",
    "label": "User-Defined Wood Product Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 25 00",
    "label": "Paper Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 25 01",
    "label": "Operation and Maintenance of Paper Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 25 06",
    "label": "Schedules for Paper Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 25 10",
    "label": "User-Defined Paper Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 26 00",
    "label": "User-Defined Paper Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 27 00",
    "label": "Printing and Related Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 27 01",
    "label": "Operation and Maintenance of Printing and Related Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 27 06",
    "label": "Schedules for Printing and Related Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 27 10",
    "label": "User-Defined Printing and Related Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 28 00",
    "label": "User-Defined Printing and Related Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 29 00",
    "label": "Petroleum and Coal Products Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 29 01",
    "label": "Operation and Maintenance of Petroleum and Coal Products Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 29 06",
    "label": "Schedules for Petroleum and Coal Products Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 29 10",
    "label": "User-Defined Petroleum and Coal Products Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 30 00",
    "label": "User-Defined Petroleum and Coal Products Manufacturing Equipment",
    "level": 2
  },
  {
    "code": "45 31 00",
    "label": "Chemical Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 31 01",
    "label": "Operation and Maintenance of Chemical Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 31 06",
    "label": "Schedules for Chemical Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 31 10",
    "label": "User-Defined Chemical Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 32 00",
    "label": "User-Defined Chemical Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 33 00",
    "label": "Plastics and Rubber Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 33 01",
    "label": "Operation and Maintenance of Plastics and Rubber Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 33 06",
    "label": "Schedules for Plastics and Rubber Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 33 10",
    "label": "User-Defined Plastics and Rubber Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 34 00",
    "label": "User-Defined Plastics and Rubber Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 35 00",
    "label": "Nonmetallic Mineral Product Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 35 01",
    "label": "Operation and Maintenance of Nonmetallic Mineral Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 35 06",
    "label": "Schedules for Nonmetallic Mineral Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 35 10",
    "label": "User-Defined Nonmetallic Mineral Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 36 00",
    "label": "User-Defined Nonmetallic Mineral Product Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 37 00",
    "label": "Primary Metal Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 37 01",
    "label": "Operation and Maintenance of Primary Metal Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 37 06",
    "label": "Schedules for Primary Metal Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 37 10",
    "label": "User-Defined Primary Metal Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 38 00",
    "label": "User-Defined Primary Metal Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 39 00",
    "label": "Fabricated Metal Product Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 39 01",
    "label": "Operation and Maintenance of Fabricated Metal Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 39 06",
    "label": "Schedules for Fabricated Metal Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 39 10",
    "label": "User-Defined Fabricated Metal Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 40 00",
    "label": "User-Defined Fabricated Metal Product Manufacturing Equipment",
    "level": 2
  },
  {
    "code": "45 41 00",
    "label": "Machinery Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 41 01",
    "label": "Operation and Maintenance of Machinery Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 41 06",
    "label": "Schedules for Machinery Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 41 10",
    "label": "User-Defined Machinery Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 42 00",
    "label": "User-Defined Machinery Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 43 00",
    "label": "Computer and Electronic Product Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 43 01",
    "label": "Operation and Maintenance of Computer and Electronic Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 43 06",
    "label": "Schedules for Computer and Electronic Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 43 10",
    "label": "User-Defined Computer and Electronic Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 44 00",
    "label": "User-Defined Computer and Electronic Product Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 45 00",
    "label": "Electrical Equipment, Appliance, and Component Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 45 01",
    "label": "Operation and Maintenance of Electrical Equipment, Appliance, and Component Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 45 06",
    "label": "Schedules for Electrical Equipment, Appliance, and Component Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 45 10",
    "label": "User-Defined Electrical Equipment, Appliance, and Component Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 46 00",
    "label": "User-Defined Electrical Equipment, Appliance, and Component Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 47 00",
    "label": "Transportation Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 47 01",
    "label": "Operation and Maintenance of Transportation Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 47 06",
    "label": "Schedules for Transportation Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 47 10",
    "label": "User-Defined Transportation Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 48 00",
    "label": "User-Defined Transportation Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 49 00",
    "label": "Furniture and Related Product Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 49 01",
    "label": "Operation and Maintenance of Furniture and Related Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 49 06",
    "label": "Schedules for Furniture and Related Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 49 10",
    "label": "User-Defined Furniture and Related Product Manufacturing Equipment",
    "level": 4
  },
  {
    "code": "45 50 00",
    "label": "User-Defined Furniture and Related Product Manufacturing Equipment",
    "level": 2
  },
  {
    "code": "45 52 00",
    "label": "User-Defined Other Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "45 53 00",
    "label": "Biopharmaceutical Manufacturing Equipment",
    "level": 3
  },
  {
    "code": "46 00 00",
    "label": "Water and Wastewater Equipment",
    "level": 1
  },
  {
    "code": "46 01 00",
    "label": "Operation and Maintenance of Water and Wastewater Equipment",
    "level": 3
  },
  {
    "code": "46 01 07",
    "label": "Operation and Maintenance of Packaged Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 01 20",
    "label": "Operation and Maintenance of Preliminary Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 01 30",
    "label": "Operation and Maintenance of Chemical Feed Equipment",
    "level": 4
  },
  {
    "code": "46 01 40",
    "label": "Operation and Maintenance of Clarification and Mixing Equipment",
    "level": 4
  },
  {
    "code": "46 01 50",
    "label": "Operation and Maintenance of Secondary Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 01 60",
    "label": "Operation and Maintenance of Advanced Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 01 70",
    "label": "Operation and Maintenance of Residuals Handling and Treatment",
    "level": 4
  },
  {
    "code": "46 05 00",
    "label": "Common Work Results for Water and Wastewater Equipment",
    "level": 3
  },
  {
    "code": "46 05 05",
    "label": "Selective Demolition for Water and Wastewater Equipment",
    "level": 4
  },
  {
    "code": "46 06 00",
    "label": "Schedules for Water and Wastewater Equipment",
    "level": 3
  },
  {
    "code": "46 06 07",
    "label": "Schedules for Packaged Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 06 20",
    "label": "Schedules for Preliminary Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 06 30",
    "label": "Schedules for Chemical Feed Equipment",
    "level": 4
  },
  {
    "code": "46 06 40",
    "label": "Schedules for Clarification and Mixing Equipment",
    "level": 4
  },
  {
    "code": "46 06 50",
    "label": "Schedules for Secondary Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 06 60",
    "label": "Schedules for Advanced Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 06 70",
    "label": "Schedules for Residuals Handling and Treatment",
    "level": 4
  },
  {
    "code": "46 07 00",
    "label": "Packaged Water and Wastewater Treatment Equipment",
    "level": 3
  },
  {
    "code": "46 07 13",
    "label": "Packaged Water Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 07 53",
    "label": "Packaged Wastewater Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 08 00",
    "label": "Commissioning of Water and Wastewater Equipment",
    "level": 3
  },
  {
    "code": "46 08 07",
    "label": "Commissioning of Packaged Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 08 20",
    "label": "Commissioning of Preliminary Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 08 30",
    "label": "Commissioning of Chemical Feed Equipment",
    "level": 4
  },
  {
    "code": "46 08 40",
    "label": "Commissioning of Clarification and Mixing Equipment",
    "level": 4
  },
  {
    "code": "46 08 50",
    "label": "Commissioning of Secondary Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 08 60",
    "label": "Commissioning of Advanced Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 08 70",
    "label": "Commissioning of Residuals Handling and Treatment",
    "level": 4
  },
  {
    "code": "46 20 00",
    "label": "Water and Wastewater Preliminary Treatment Equipment",
    "level": 2
  },
  {
    "code": "46 21 00",
    "label": "Screening Equipment",
    "level": 3
  },
  {
    "code": "46 21 11",
    "label": "Climber-type Bar Screens",
    "level": 4
  },
  {
    "code": "46 21 13",
    "label": "Chain-and-Rake Bar Screens",
    "level": 4
  },
  {
    "code": "46 21 16",
    "label": "Flexible Rake Bar Screens",
    "level": 4
  },
  {
    "code": "46 21 17",
    "label": "Catenary Bar Screens",
    "level": 4
  },
  {
    "code": "46 21 19",
    "label": "Continuous Belt Screens",
    "level": 4
  },
  {
    "code": "46 21 23",
    "label": "Cylindrical Bar Screens",
    "level": 4
  },
  {
    "code": "46 21 26",
    "label": "Step Screens",
    "level": 4
  },
  {
    "code": "46 21 33",
    "label": "Rotary Drum Screens",
    "level": 4
  },
  {
    "code": "46 21 39",
    "label": "Spiral Screens",
    "level": 4
  },
  {
    "code": "46 21 43",
    "label": "Band Screens",
    "level": 4
  },
  {
    "code": "46 21 46",
    "label": "Disc Screens",
    "level": 4
  },
  {
    "code": "46 21 51",
    "label": "Traveling Water Screens",
    "level": 4
  },
  {
    "code": "46 21 53",
    "label": "Perforated Plate Screens",
    "level": 4
  },
  {
    "code": "46 21 56",
    "label": "Wedge Wire Screens",
    "level": 4
  },
  {
    "code": "46 21 57",
    "label": "Element Screens",
    "level": 4
  },
  {
    "code": "46 21 71",
    "label": "Trash Raking Equipment",
    "level": 4
  },
  {
    "code": "46 21 73",
    "label": "Screenings Washing and Compacting Equipment",
    "level": 4
  },
  {
    "code": "46 21 76",
    "label": "Vacuum Screenings Conveying Equipment",
    "level": 4
  },
  {
    "code": "46 21 79",
    "label": "Screenings Storage Containers",
    "level": 4
  },
  {
    "code": "46 21 83",
    "label": "Septage Receiving Equipment",
    "level": 4
  },
  {
    "code": "46 23 00",
    "label": "Grit Removal and Handling Equipment",
    "level": 3
  },
  {
    "code": "46 23 13",
    "label": "Chain-and-Bucket Grit Removal Equipment",
    "level": 4
  },
  {
    "code": "46 23 16",
    "label": "Chain-and-Flight Grit Removal Equipment",
    "level": 4
  },
  {
    "code": "46 23 23",
    "label": "Vortex Grit Removal Equipment",
    "level": 4
  },
  {
    "code": "46 23 27",
    "label": "Cyclone Degritters",
    "level": 4
  },
  {
    "code": "46 23 33",
    "label": "Aerated Grit Removal Equipment",
    "level": 4
  },
  {
    "code": "46 23 43",
    "label": "Inline Baffled Grit Removal Equipment",
    "level": 4
  },
  {
    "code": "46 23 53",
    "label": "Traveling Bridge Grit Removal Equipment",
    "level": 4
  },
  {
    "code": "46 23 63",
    "label": "Grit Classifying and Washing Equipment",
    "level": 4
  },
  {
    "code": "46 23 66",
    "label": "Grit Storage Containers",
    "level": 4
  },
  {
    "code": "46 24 00",
    "label": "Grinding and Shredding Equipment",
    "level": 3
  },
  {
    "code": "46 24 13",
    "label": "Macerators",
    "level": 4
  },
  {
    "code": "46 24 16",
    "label": "Comminutors",
    "level": 4
  },
  {
    "code": "46 24 23",
    "label": "Inline Grinders",
    "level": 4
  },
  {
    "code": "46 24 33",
    "label": "Open-channel Grinders",
    "level": 4
  },
  {
    "code": "46 24 36",
    "label": "Modular Grinding-Screening-Compacting Equipment",
    "level": 4
  },
  {
    "code": "46 25 00",
    "label": "Oil and Grease Separation and Removal Equipment",
    "level": 3
  },
  {
    "code": "46 25 13",
    "label": "Coalescing Oil-Water Separators",
    "level": 4
  },
  {
    "code": "46 25 16",
    "label": "API Oil-Water Separators",
    "level": 4
  },
  {
    "code": "46 25 23",
    "label": "Grease Traps",
    "level": 4
  },
  {
    "code": "46 25 33",
    "label": "Dissolved Air Flotation Grease and Oil Separation Equipment",
    "level": 4
  },
  {
    "code": "46 25 41",
    "label": "Helical Scum Skimming and Removal Equipment",
    "level": 4
  },
  {
    "code": "46 25 43",
    "label": "Tipping Trough Scum Skimming and Removal Equipment",
    "level": 4
  },
  {
    "code": "46 25 46",
    "label": "Chain and Flight Scum Collection and Removal Equipment",
    "level": 4
  },
  {
    "code": "46 25 47",
    "label": "Floating Scum Skimming and Removal Equipment",
    "level": 4
  },
  {
    "code": "46 30 00",
    "label": "Water and Wastewater Chemical Feed Equipment",
    "level": 2
  },
  {
    "code": "46 31 00",
    "label": "Gas Chemical Feed Equipment",
    "level": 3
  },
  {
    "code": "46 31 11",
    "label": "Chlorine Gas Feed Equipment",
    "level": 4
  },
  {
    "code": "46 31 13",
    "label": "Sulfur Dioxide Gas Feed Equipment",
    "level": 4
  },
  {
    "code": "46 31 16",
    "label": "Ammonia Gas Feed Equipment",
    "level": 4
  },
  {
    "code": "46 31 23",
    "label": "Gas Storage, Weighing, and Leak Detection Equipment",
    "level": 4
  },
  {
    "code": "46 31 26",
    "label": "Emergency Gas Treatment Systems",
    "level": 4
  },
  {
    "code": "46 31 33",
    "label": "Chlorine Dioxide Reactors",
    "level": 4
  },
  {
    "code": "46 31 43",
    "label": "Carbon Dioxide Gas Feed Equipment",
    "level": 4
  },
  {
    "code": "46 31 53",
    "label": "Ozone Generating and Feed Equipment",
    "level": 4
  },
  {
    "code": "46 31 56",
    "label": "Liquid Oxygen Storage and Feed Equipment",
    "level": 4
  },
  {
    "code": "46 31 59",
    "label": "Cleaning Requirements for Oxygen Service",
    "level": 4
  },
  {
    "code": "46 31 83",
    "label": "Gas Chemical Feed Accessories and Safety Equipment",
    "level": 4
  },
  {
    "code": "46 33 00",
    "label": "Liquid Chemical Feed Equipment",
    "level": 3
  },
  {
    "code": "46 33 13",
    "label": "Sodium Hypochlorite Generating Equipment",
    "level": 4
  },
  {
    "code": "46 33 23",
    "label": "Liquid Chemical Weighing Equipment",
    "level": 4
  },
  {
    "code": "46 33 33",
    "label": "Polymer Blending and Feed Equipment",
    "level": 4
  },
  {
    "code": "46 33 41",
    "label": "Liquid Chemical Feed System Coordination and Integration",
    "level": 4
  },
  {
    "code": "46 33 42",
    "label": "Diaphragm-type Metering Pumps",
    "level": 4
  },
  {
    "code": "46 33 44",
    "label": "Peristaltic Metering Pumps",
    "level": 4
  },
  {
    "code": "46 33 46",
    "label": "Progressing Cavity Metering Pumps",
    "level": 4
  },
  {
    "code": "46 33 48",
    "label": "Lobe Metering Pumps",
    "level": 4
  },
  {
    "code": "46 33 53",
    "label": "Drum Pumps",
    "level": 4
  },
  {
    "code": "46 33 66",
    "label": "Liquid Chemical Transfer Pumps",
    "level": 4
  },
  {
    "code": "46 33 73",
    "label": "Liquid Chemical Diffusers",
    "level": 4
  },
  {
    "code": "46 33 83",
    "label": "Liquid Chemical Feed Accessories and Safety Equipment",
    "level": 4
  },
  {
    "code": "46 36 00",
    "label": "Dry Chemical Feed Equipment",
    "level": 3
  },
  {
    "code": "46 36 11",
    "label": "Dry Chemical Feed System Coordination and Integration",
    "level": 4
  },
  {
    "code": "46 36 13",
    "label": "Storage Silos",
    "level": 4
  },
  {
    "code": "46 36 23",
    "label": "Dry Chemical Weighing Equipment",
    "level": 4
  },
  {
    "code": "46 36 33",
    "label": "Volumetric Feed Equipment",
    "level": 4
  },
  {
    "code": "46 36 36",
    "label": "Gravimetric Feed Equipment",
    "level": 4
  },
  {
    "code": "46 36 43",
    "label": "Lime Slaking Equipment",
    "level": 4
  },
  {
    "code": "46 36 53",
    "label": "Chemical Tablet Feeding Equipment",
    "level": 4
  },
  {
    "code": "46 36 83",
    "label": "Dry Chemical Feed Accessories and Safety Equipment",
    "level": 4
  },
  {
    "code": "46 40 00",
    "label": "Water and Wastewater Clarification and Mixing Equipment",
    "level": 2
  },
  {
    "code": "46 41 00",
    "label": "Mixing Equipment",
    "level": 3
  },
  {
    "code": "46 41 11",
    "label": "Rapid Mixers",
    "level": 4
  },
  {
    "code": "46 41 13",
    "label": "Inline Blender-type Rapid Mixers",
    "level": 4
  },
  {
    "code": "46 41 16",
    "label": "Induction-type Rapid Mixing Equipment",
    "level": 4
  },
  {
    "code": "46 41 17",
    "label": "Inline Static Mixers",
    "level": 4
  },
  {
    "code": "46 41 21",
    "label": "Jet Mixing Equipment",
    "level": 4
  },
  {
    "code": "46 41 23",
    "label": "Submersible Mixers",
    "level": 4
  },
  {
    "code": "46 41 26",
    "label": "Floating Mechanical Mixers",
    "level": 4
  },
  {
    "code": "46 41 27",
    "label": "Paddle Mixers",
    "level": 4
  },
  {
    "code": "46 41 29",
    "label": "Pin Mixers",
    "level": 4
  },
  {
    "code": "46 41 31",
    "label": "Vertical Reel Flocculation Equipment",
    "level": 4
  },
  {
    "code": "46 41 33",
    "label": "Horizontal Reel Flocculation Equipment",
    "level": 4
  },
  {
    "code": "46 41 34",
    "label": "Vertical Turbine Flocculation Equipment",
    "level": 4
  },
  {
    "code": "46 41 36",
    "label": "Walking-beam Flocculation Equipment",
    "level": 4
  },
  {
    "code": "46 41 38",
    "label": "Horizontal Oscillating Flocculation Equipment",
    "level": 4
  },
  {
    "code": "46 41 41",
    "label": "Top-entering Tank Mixers",
    "level": 4
  },
  {
    "code": "46 41 43",
    "label": "Side-entry Tank Mixers",
    "level": 4
  },
  {
    "code": "46 41 46",
    "label": "Portable Tank Mixers",
    "level": 4
  },
  {
    "code": "46 43 00",
    "label": "Clarifier Equipment",
    "level": 3
  },
  {
    "code": "46 43 11",
    "label": "Chain-and-Flight Clarifier Equipment",
    "level": 4
  },
  {
    "code": "46 43 14",
    "label": "Traveling Bridge Clarifier Equipment",
    "level": 4
  },
  {
    "code": "46 43 16",
    "label": "Differential Head Clarifier Equipment",
    "level": 4
  },
  {
    "code": "46 43 18",
    "label": "Oscillating Scraper-type Clarifier Equipment",
    "level": 4
  },
  {
    "code": "46 43 21",
    "label": "Circular Clarifier Equipment",
    "level": 4
  },
  {
    "code": "46 43 53",
    "label": "Solids Contact Clarifier Equipment",
    "level": 4
  },
  {
    "code": "46 43 61",
    "label": "Flocculating Clarifier, Pulsating Sludge Blanket Type",
    "level": 4
  },
  {
    "code": "46 43 63",
    "label": "Dissolved Air Flotation Equipment for Water Treatment",
    "level": 4
  },
  {
    "code": "46 43 66",
    "label": "Ballasted High-rate Clarifier Equipment",
    "level": 4
  },
  {
    "code": "46 43 67",
    "label": "High rate Clarification/Thickening Equipment",
    "level": 4
  },
  {
    "code": "46 43 73",
    "label": "Tube Settlers",
    "level": 4
  },
  {
    "code": "46 43 76",
    "label": "Inclined Plate Settlers",
    "level": 4
  },
  {
    "code": "46 46 00",
    "label": "Sediment Removal Equipment",
    "level": 3
  },
  {
    "code": "46 46 13",
    "label": "Tipping Sediment Flushing Tanks",
    "level": 4
  },
  {
    "code": "46 46 16",
    "label": "Flushing Gates",
    "level": 4
  },
  {
    "code": "46 46 23",
    "label": "Water Cannon",
    "level": 4
  },
  {
    "code": "46 46 26",
    "label": "Nozzle Systems",
    "level": 4
  },
  {
    "code": "46 50 00",
    "label": "Water and Wastewater Secondary Treatment Equipment",
    "level": 2
  },
  {
    "code": "46 51 00",
    "label": "Air and Gas Diffusion Equipment",
    "level": 3
  },
  {
    "code": "46 51 11",
    "label": "Fixed Mechanical Aerators",
    "level": 4
  },
  {
    "code": "46 51 13",
    "label": "Floating Mechanical Aerators",
    "level": 4
  },
  {
    "code": "46 51 16",
    "label": "Submersible Aspirating Aerator Equipment",
    "level": 4
  },
  {
    "code": "46 51 17",
    "label": "Jet Aeration Equipment",
    "level": 4
  },
  {
    "code": "46 51 21",
    "label": "Coarse Bubble Diffusers",
    "level": 4
  },
  {
    "code": "46 51 23",
    "label": "Swing-type Channel Aeration Equipment",
    "level": 4
  },
  {
    "code": "46 51 26",
    "label": "Shear Box Diffusers",
    "level": 4
  },
  {
    "code": "46 51 31",
    "label": "Flexible Membrane Tube Diffusers",
    "level": 4
  },
  {
    "code": "46 51 33",
    "label": "Flexible Membrane Disc Diffusers",
    "level": 4
  },
  {
    "code": "46 51 36",
    "label": "Ceramic Disc Fine Bubble Diffusers",
    "level": 4
  },
  {
    "code": "46 51 43",
    "label": "Floating Membrane Diffusers",
    "level": 4
  },
  {
    "code": "46 51 46",
    "label": "Membrane Diffusers",
    "level": 4
  },
  {
    "code": "46 51 53",
    "label": "Cascading Aerators",
    "level": 4
  },
  {
    "code": "46 51 63",
    "label": "Pure-oxygen Generating Equipment",
    "level": 4
  },
  {
    "code": "46 53 00",
    "label": "Biological Treatment Systems",
    "level": 3
  },
  {
    "code": "46 53 13",
    "label": "Rotating Biological Contactors",
    "level": 4
  },
  {
    "code": "46 53 23",
    "label": "Trickling Filter Rotary Distributor Equipment",
    "level": 4
  },
  {
    "code": "46 53 24",
    "label": "Trickling Filter Media",
    "level": 4
  },
  {
    "code": "46 53 26",
    "label": "Bio-towers",
    "level": 4
  },
  {
    "code": "46 53 33",
    "label": "Moving-bed Biological Reactors",
    "level": 4
  },
  {
    "code": "46 53 36",
    "label": "Integrated Fixed-film Activated Sludge Equipment",
    "level": 4
  },
  {
    "code": "46 53 41",
    "label": "Intermittent Sand Filters for Wastewater Treatment",
    "level": 4
  },
  {
    "code": "46 53 43",
    "label": "Deep-bed Denitrification Filters",
    "level": 4
  },
  {
    "code": "46 53 46",
    "label": "Biologically Activated Filters",
    "level": 4
  },
  {
    "code": "46 53 49",
    "label": "Membrane Biological Reactors",
    "level": 4
  },
  {
    "code": "46 53 53",
    "label": "Sequencing Batch Reactors",
    "level": 4
  },
  {
    "code": "46 53 61",
    "label": "Oxidation Ditch Equipment",
    "level": 4
  },
  {
    "code": "46 53 63",
    "label": "Vertical Loop Reactors",
    "level": 4
  },
  {
    "code": "46 60 00",
    "label": "Water and Wastewater Advanced Treatment Equipment",
    "level": 2
  },
  {
    "code": "46 61 00",
    "label": "Filtration Equipment",
    "level": 3
  },
  {
    "code": "46 61 13",
    "label": "Filter Media",
    "level": 4
  },
  {
    "code": "46 61 16",
    "label": "Filter Surface Wash Agitators",
    "level": 4
  },
  {
    "code": "46 61 17",
    "label": "Filter Air Scour Equipment",
    "level": 4
  },
  {
    "code": "46 61 19",
    "label": "Wash Water Troughs",
    "level": 4
  },
  {
    "code": "46 61 21",
    "label": "Pressure Filters",
    "level": 4
  },
  {
    "code": "46 61 23",
    "label": "Gravity Filters",
    "level": 4
  },
  {
    "code": "46 61 26",
    "label": "High-rate Sand Filters",
    "level": 4
  },
  {
    "code": "46 61 29",
    "label": "Traveling Bridge Filters",
    "level": 4
  },
  {
    "code": "46 61 33",
    "label": "Microfiltration and Ultrafiltration Membrane Equipment",
    "level": 4
  },
  {
    "code": "46 61 41",
    "label": "Disc Cloth Filters",
    "level": 4
  },
  {
    "code": "46 61 43",
    "label": "Rotary Drum Cloth Filters",
    "level": 4
  },
  {
    "code": "46 61 46",
    "label": "Automatic Backwash Cloth Filter Equipment",
    "level": 4
  },
  {
    "code": "46 61 53",
    "label": "Cartridge Filters",
    "level": 4
  },
  {
    "code": "46 61 63",
    "label": "Bag Filters",
    "level": 4
  },
  {
    "code": "46 61 73",
    "label": "Automatic Straining Equipment",
    "level": 4
  },
  {
    "code": "46 63 00",
    "label": "Demineralization Equipment",
    "level": 3
  },
  {
    "code": "46 63 11",
    "label": "Ion-exchange Vessel Media",
    "level": 4
  },
  {
    "code": "46 63 13",
    "label": "Mixed Bed Ion-exchange Vessel Systems",
    "level": 4
  },
  {
    "code": "46 63 16",
    "label": "Packed Bed Ion-exchange Vessel Systems",
    "level": 4
  },
  {
    "code": "46 63 17",
    "label": "Electrodialysis Reversal Equipment",
    "level": 4
  },
  {
    "code": "46 63 23",
    "label": "Reverse-Osmosis and Nanofiltration Membrane Equipment",
    "level": 4
  },
  {
    "code": "46 63 31",
    "label": "Multiple-effect Distillation Equipment",
    "level": 4
  },
  {
    "code": "46 63 32",
    "label": "Water Vapor Compression Distillation Equipment",
    "level": 4
  },
  {
    "code": "46 63 33",
    "label": "Desalination Mechanical Vapor Compression Equipment",
    "level": 4
  },
  {
    "code": "46 63 34",
    "label": "Desalination Thermal Vapor Compression Equipment",
    "level": 4
  },
  {
    "code": "46 63 36",
    "label": "Desalination Multi-stage Flash Equipment",
    "level": 4
  },
  {
    "code": "46 63 41",
    "label": "Desalination Falling Film Evaporators",
    "level": 4
  },
  {
    "code": "46 63 43",
    "label": "Desalination Rising Film Evaporators",
    "level": 4
  },
  {
    "code": "46 63 53",
    "label": "Desalination Forced-circulation Crystallizing Equipment",
    "level": 4
  },
  {
    "code": "46 63 63",
    "label": "Desalination Spray Dry Evaporation Equipment",
    "level": 4
  },
  {
    "code": "46 63 73",
    "label": "Demineralization Energy Recovery Equipment",
    "level": 4
  },
  {
    "code": "46 66 00",
    "label": "Ultraviolet Equipment",
    "level": 3
  },
  {
    "code": "46 66 13",
    "label": "Closed-vessel Low-pressure/Low-intensity Ultraviolet Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 66 16",
    "label": "Closed-vessel Low-pressure/High-intensity Ultraviolet Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 66 23",
    "label": "Closed-vessel Medium-pressure Ultraviolet Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 66 53",
    "label": "Open-channel Low-pressure/Low-intensity Ultraviolet Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 66 56",
    "label": "Open-channel Low-pressure/High-intensity Ultraviolet Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 66 63",
    "label": "Open-channel Medium-pressure Ultraviolet Treatment Equipment",
    "level": 4
  },
  {
    "code": "46 70 00",
    "label": "Water and Wastewater Residuals Handling and Treatment",
    "level": 2
  },
  {
    "code": "46 71 00",
    "label": "Residuals Thickening Equipment",
    "level": 3
  },
  {
    "code": "46 71 13",
    "label": "Circular Gravity Thickeners",
    "level": 4
  },
  {
    "code": "46 71 16",
    "label": "Gravity Belt Thickeners",
    "level": 4
  },
  {
    "code": "46 71 23",
    "label": "Dissolved Air Flotation Thickening Equipment",
    "level": 4
  },
  {
    "code": "46 71 33",
    "label": "Rotary Drum Thickening Equipment",
    "level": 4
  },
  {
    "code": "46 71 36",
    "label": "Centrifuge Thickening Equipment",
    "level": 4
  },
  {
    "code": "46 71 43",
    "label": "Disc Thickeners",
    "level": 4
  },
  {
    "code": "46 71 46",
    "label": "Thickening Screw Press",
    "level": 4
  },
  {
    "code": "46 71 53",
    "label": "Scum Concentrator Equipment",
    "level": 4
  },
  {
    "code": "46 73 00",
    "label": "Residuals Stabilization",
    "level": 3
  },
  {
    "code": "46 73 11",
    "label": "Radial Beam Fixed Digester Covers",
    "level": 4
  },
  {
    "code": "46 73 12",
    "label": "Dual Deck Truss-type Fixed Digester Covers",
    "level": 4
  },
  {
    "code": "46 73 14",
    "label": "Radial Beam Floating Digester Covers",
    "level": 4
  },
  {
    "code": "46 73 16",
    "label": "Dual Deck Truss-type Floating Digester Covers",
    "level": 4
  },
  {
    "code": "46 73 17",
    "label": "Radial Beam Floating Gas-holding Digester Covers",
    "level": 4
  },
  {
    "code": "46 73 18",
    "label": "Dual Deck Truss-type Floating Gas-holding Digester Covers",
    "level": 4
  },
  {
    "code": "46 73 19",
    "label": "Digester Appurtenances",
    "level": 4
  },
  {
    "code": "46 73 21",
    "label": "Aerobic Digester Aeration Equipment",
    "level": 4
  },
  {
    "code": "46 73 24",
    "label": "Autothermal Thermophilic Aerobic Digestion Equipment",
    "level": 4
  },
  {
    "code": "46 73 26",
    "label": "Egg-shaped Digesters",
    "level": 4
  },
  {
    "code": "46 73 31",
    "label": "External Draft Tube Digester Mixing System",
    "level": 4
  },
  {
    "code": "46 73 32",
    "label": "Internal Draft Tube Digester Mixing System",
    "level": 4
  },
  {
    "code": "46 73 33",
    "label": "Confined Gas Mixing System",
    "level": 4
  },
  {
    "code": "46 73 34",
    "label": "Unconfined Gas Mixing System",
    "level": 4
  },
  {
    "code": "46 73 41",
    "label": "Digester Heating Equipment",
    "level": 4
  },
  {
    "code": "46 73 63",
    "label": "Residuals Pasteurization Equipment",
    "level": 4
  },
  {
    "code": "46 76 00",
    "label": "Residuals Dewatering Equipment",
    "level": 3
  },
  {
    "code": "46 76 13",
    "label": "Vacuum Filters",
    "level": 4
  },
  {
    "code": "46 76 21",
    "label": "Belt Filter Presses",
    "level": 4
  },
  {
    "code": "46 76 23",
    "label": "Plate-and-Frame Filter Presses",
    "level": 4
  },
  {
    "code": "46 76 26",
    "label": "Rotary Presses",
    "level": 4
  },
  {
    "code": "46 76 27",
    "label": "Screw Presses",
    "level": 4
  },
  {
    "code": "46 76 33",
    "label": "Dewatering Centrifuges",
    "level": 4
  },
  {
    "code": "46 76 53",
    "label": "Belt Dryers",
    "level": 4
  },
  {
    "code": "46 76 60",
    "label": "Direct-heat Residuals Drying Equipment",
    "level": 4
  },
  {
    "code": "46 76 70",
    "label": "Indirect-heat Residuals Drying Equipment",
    "level": 4
  },
  {
    "code": "46 78 00",
    "label": "Thermal Treatment of Residuals",
    "level": 3
  },
  {
    "code": "46 78 13",
    "label": "Multiple-hearth Sludge Incinerators",
    "level": 4
  },
  {
    "code": "46 78 23",
    "label": "Fluidized-bed Sludge Incinerators",
    "level": 4
  },
  {
    "code": "46 78 33",
    "label": "Ash Handling Equipment",
    "level": 4
  },
  {
    "code": "46 78 41",
    "label": "Recuperative Air Preheating Equipment",
    "level": 4
  },
  {
    "code": "46 78 46",
    "label": "Regenerative Thermal Oxidizers",
    "level": 4
  },
  {
    "code": "46 78 47",
    "label": "Waste Heat Recovery Boilers",
    "level": 4
  },
  {
    "code": "46 78 49",
    "label": "Waste Heat Recovery Heat Exchangers",
    "level": 4
  },
  {
    "code": "46 78 73",
    "label": "Thermal Oxidation Equipment",
    "level": 4
  },
  {
    "code": "48 00 00",
    "label": "Electrical Power Generation",
    "level": 1
  },
  {
    "code": "48 01 00",
    "label": "Operation and Maintenance for Electrical Power Generation",
    "level": 3
  },
  {
    "code": "48 01 10",
    "label": "Operation and Maintenance of Electrical Power Generation Equipment",
    "level": 4
  },
  {
    "code": "48 01 70",
    "label": "Operation and Maintenance of Electrical Power Generation Testing",
    "level": 4
  },
  {
    "code": "48 05 00",
    "label": "Common Work Results for Electrical Power Generation",
    "level": 3
  },
  {
    "code": "48 05 05",
    "label": "Selective Demolition for Electrical Power Generation",
    "level": 4
  },
  {
    "code": "48 06 00",
    "label": "Schedules for Electrical Power Generation",
    "level": 3
  },
  {
    "code": "48 06 10",
    "label": "Schedules for Electrical Power Generation Equipment",
    "level": 4
  },
  {
    "code": "48 06 70",
    "label": "Schedules for Electrical Power Generation Testing",
    "level": 4
  },
  {
    "code": "48 08 00",
    "label": "Commissioning of Electrical Power Generation",
    "level": 3
  },
  {
    "code": "48 09 00",
    "label": "Instrumentation and Control for Electrical Power Generation",
    "level": 3
  },
  {
    "code": "48 10 00",
    "label": "Electrical Power Generation Equipment",
    "level": 2
  },
  {
    "code": "48 11 00",
    "label": "Fossil Fuel Plant Electrical Power Generation Equipment",
    "level": 3
  },
  {
    "code": "48 11 13",
    "label": "Fossil Fuel Electrical Power Plant Boilers",
    "level": 4
  },
  {
    "code": "48 11 16",
    "label": "Fossil Fuel Electrical Power Plant Condensers",
    "level": 4
  },
  {
    "code": "48 11 19",
    "label": "Fossil Fuel Electrical Power Plant Steam Turbines",
    "level": 4
  },
  {
    "code": "48 11 23",
    "label": "Fossil Fuel Electrical Power Plant Gas Turbines",
    "level": 4
  },
  {
    "code": "48 11 26",
    "label": "Fossil Fuel Electrical Power Plant Generators",
    "level": 4
  },
  {
    "code": "48 12 00",
    "label": "Nuclear Fuel Plant Electrical Power Generation Equipment",
    "level": 3
  },
  {
    "code": "48 12 13",
    "label": "Nuclear Fuel Reactors",
    "level": 4
  },
  {
    "code": "48 12 13.13",
    "label": "Nuclear Fuel Fission Reactors",
    "level": 5
  },
  {
    "code": "48 12 13.16",
    "label": "Nuclear Fuel Fusion Reactors",
    "level": 5
  },
  {
    "code": "48 12 23",
    "label": "Nuclear Fuel Electrical Power Plant Steam Generators",
    "level": 4
  },
  {
    "code": "48 12 26",
    "label": "Nuclear Fuel Electrical Power Plant Condensers",
    "level": 4
  },
  {
    "code": "48 12 29",
    "label": "Nuclear Fuel Electrical Power Plant Turbines",
    "level": 4
  },
  {
    "code": "48 12 33",
    "label": "Nuclear Fuel Electrical Power Generators",
    "level": 4
  },
  {
    "code": "48 13 00",
    "label": "Hydroelectric Plant Electrical Power Generation Equipment",
    "level": 3
  },
  {
    "code": "48 13 13",
    "label": "Hydroelectric Power Plant Water Turbines",
    "level": 4
  },
  {
    "code": "48 13 16",
    "label": "Hydroelectric Power Plant Electrical Power Generators",
    "level": 4
  },
  {
    "code": "48 14 00",
    "label": "Solar Energy Electrical Power Generation Equipment",
    "level": 3
  },
  {
    "code": "48 14 13",
    "label": "Solar Energy Collectors",
    "level": 4
  },
  {
    "code": "48 14 13.13",
    "label": "Amorphous Solar Energy Collectors",
    "level": 5
  },
  {
    "code": "48 14 13.16",
    "label": "Plate Cell Solar Energy Collectors",
    "level": 5
  },
  {
    "code": "48 14 13.19",
    "label": "Vacuum Tube Solar Energy Collectors",
    "level": 5
  },
  {
    "code": "48 15 00",
    "label": "Wind Energy Electrical Power Generation Equipment",
    "level": 3
  },
  {
    "code": "48 15 13",
    "label": "Wind Turbines",
    "level": 4
  },
  {
    "code": "48 15 16",
    "label": "Wind Energy Electrical Power Generators",
    "level": 4
  },
  {
    "code": "48 16 00",
    "label": "Geothermal Energy Electrical Power Generation Equipment",
    "level": 3
  },
  {
    "code": "48 16 13",
    "label": "Geothermal Energy Heat Pumps",
    "level": 4
  },
  {
    "code": "48 16 16",
    "label": "Geothermal Energy Condensers",
    "level": 4
  },
  {
    "code": "48 16 19",
    "label": "Geothermal Energy Steam Turbines",
    "level": 4
  },
  {
    "code": "48 16 23",
    "label": "Geothermal Energy Electrical Power Generators",
    "level": 4
  },
  {
    "code": "48 17 00",
    "label": "Electrochemical Energy Electrical Power Generation Equipment",
    "level": 3
  },
  {
    "code": "48 17 13",
    "label": "Electrical Power Generation Batteries",
    "level": 4
  },
  {
    "code": "48 18 00",
    "label": "Fuel Cell Electrical Power Generation Equipment",
    "level": 3
  },
  {
    "code": "48 18 13",
    "label": "Electrical Power Generation Fuel Cells",
    "level": 4
  },
  {
    "code": "48 18 16",
    "label": "Hydrogen Control Equipment",
    "level": 4
  },
  {
    "code": "48 19 00",
    "label": "Electrical Power Control Equipment",
    "level": 3
  },
  {
    "code": "48 19 13",
    "label": "Electrical Power Generation Battery Charging Equipment",
    "level": 4
  },
  {
    "code": "48 19 16",
    "label": "Electrical Power Generation Inverters",
    "level": 4
  },
  {
    "code": "48 19 19",
    "label": "Electrical Power Generation Solar Tracking Equipment",
    "level": 4
  },
  {
    "code": "48 19 23",
    "label": "Electrical Power Generation Transformers",
    "level": 4
  },
  {
    "code": "48 19 26",
    "label": "Electrical Power Generation Voltage Regulators",
    "level": 4
  },
  {
    "code": "48 30 00",
    "label": "Combined Heat and Power Generation",
    "level": 2
  },
  {
    "code": "48 31 00",
    "label": "Combustion Combined Heat and Power Generation",
    "level": 3
  },
  {
    "code": "48 31 13",
    "label": "Natural Gas-Fueled Combined Heat and Power Generation",
    "level": 4
  },
  {
    "code": "48 31 16",
    "label": "Biomass-Fueled Combined Heat and Power Generation",
    "level": 4
  },
  {
    "code": "48 70 00",
    "label": "Electrical Power Generation Testing",
    "level": 2
  },
  {
    "code": "48 71 00",
    "label": "Electrical Power Generation Test Equipment",
    "level": 3
  },
  {
    "code": "48 71 13",
    "label": "Electrical Power Generation Corona Test Equipment",
    "level": 4
  },
  {
    "code": "48 71 16",
    "label": "Electrical Power Generation Current Test Equipment",
    "level": 4
  },
  {
    "code": "48 71 19",
    "label": "Electrical Power Generation Power Test Equipment",
    "level": 4
  },
  {
    "code": "48 71 23",
    "label": "Electrical Power Generation Resistance Test Equipment",
    "level": 4
  },
  {
    "code": "48 71 26",
    "label": "Electrical Power Generation Voltage Test Equipment",
    "level": 4
  }
]