31 00 00 Earthwork 31 05 16 Aggregates for Earthwork 31 10 00 Site Clearing 31 20 00 Earth Moving 31 22 00 Grading 31 23 00 Excavation and Fill 31 25 00 Erosion and Sedimentation Controls 31 30 00 Earthwork Methods 31 50 00 Excavation Support and Protection 32 05 16 Aggregates for Exterior Improvements 32 10 00 Bases, Ballasts, and Paving 32 18 00 Athletic and Recreational Surfacing 32 30 00 Site Improvements 32 32 00 Retaining Walls 32 80 00 Irrigation 32 90 00 Planting 33 00 00 Utilities 33 10 00 Water Utilities 33 30 00 Sanitary Sewerage 33 40 00 Stormwater Utilities 33 70 00 Electrical Utilities 34 71 00 Roadway Construction Highway Contractor Industrial Contractor Utility Contractor

Building Contractor General Contractors & Specialty Contractors Industrial Contractor

Construction Management Division 02 - Site Construction Division 05 - Metals Division 35 - Waterway and Marine Construction Industrial Contractor Steel Fabrication

31 00 00 Earthwork 31 10 00 Site Clearing 31 20 00 Earth Moving 31 40 00 Shoring and Underpinning 31 62 00 Driven Piles 31 63 00 Bored Piles 31 70 00 Tunneling and Mining 31 71 00 Tunnel Excavation 31 71 16 Tunnel Excavation by Drilling and Blasting 32 16 00 Curbs, Gutters, Sidewalks, and Driveways 33 10 00 Water Utilities 33 16 00 Water Utility Storage Tanks 33 30 00 Sanitary Sewerage 33 40 00 Stormwater Utilities Highway Contractor Industrial Contractor Rock/Gravel/Sand Specialty Contractor Utility Contractor

Building Contractor Design Build Industrial Contractor Residential/Multi Family Contractor

Building Contractor Design Build General Contractors & Specialty Contractors Highway Contractor Industrial Contractor Specialty Contractor Utility Contractor

07 10 00 Dampproofing and Waterproofing 07 81 00 Applied Fireproofing 09 62 00 Specialty Flooring 09 90 00 Painting and Coating Industrial Contractor Specialty Contractor

06 00 00 Wood, Plastics, & Composites 06 22 00 Millwork Design Build Industrial Contractor

Building Contractor Construction Management Design Build Industrial Contractor Residential/Multi Family Contractor

03 00 00 Concrete 03 01 00 Maintenance of Concrete 03 10 00 Concrete Forming and Accessories 03 20 00 Concrete Reinforcing 03 30 00 Cast-in-Place Concrete 03 31 00 Structural Concrete 03 33 00 Architectural Concrete 03 40 00 Precast Concrete 03 50 00 Cast Decks and Underlayment 03 80 00 Concrete Cutting and Boring 03 90 00 Mass Concrete Building Contractor Construction Management Design Build Division 03 - Concrete Industrial Contractor Steel Erection

Building Contractor Design Build Division 13 - Special Construction Industrial Contractor

Building Contractor Construction Management Design Build General Contractors & Specialty Contractors Industrial Contractor 03 00 00 Concrete 34 40 00 Transportation Signaling and Control Equipment Division 35 - Waterway and Marine Construction

Industrial Contractor 05 50 00 Metal Fabrications 07 60 00 Flashing and Sheet Metal 32 31 19 Decorative Metal Fences and Gates 05 10 00 Structural Metal Framing

Building Contractor Construction Management Design Build Industrial Contractor Residential/Multi Family Contractor

07 10 00 Dampproofing and Waterproofing 07 81 00 Applied Fireproofing 09 00 00 Finishes 09 62 00 Specialty Flooring 09 90 00 Painting and Coating Building Contractor Industrial Contractor

Building Contractor Industrial Contractor Construction Management Design Build

03 30 00 Cast-in-Place Concrete 03 31 00 Structural Concrete 05 50 00 Metal Fabrications 21 00 00 Fire Suppression 21 40 00 Fire Suppression Water Storage 22 11 00 Facility Water Distribution 26 05 83 Wiring Connections Division 35 - Waterway and Marine Construction Industrial Contractor Steel Erection Steel Fabrication

01 50 00 Temporary Facilities and Controls 02 41 00 Demolition 02 50 00 Site Remediation 02 60 00 Contaminated Site Material Removal 03 00 00 Concrete 06 10 00 Rough Carpentry 06 20 00 Finish Carpentry 06 22 00 Millwork Building Contractor Construction Management Developers Disposal Services Division 06 - Wood and Plastics Highway Contractor Industrial Contractor Residential/Multi Family Contractor Trucking and Hauling Utility Contractor 32 00 00 Exterior Improvements Division 32 - Exterior Improvements

Building Contractor Design Build Industrial Contractor

07 18 00 Traffic Coatings 07 50 00 Membrane Roofing 09 00 00 Finishes 09 60 00 Flooring 09 62 00 Specialty Flooring 09 70 00 Wall Finishes 09 90 00 Painting and Coating 31 23 00 Excavation and Fill Building Contractor Industrial Contractor Utility Contractor

Construction Management Construction Management Software Industrial Contractor

Construction Management Design Build Highway Contractor Industrial Contractor Utility Contractor

22 00 00 Plumbing 22 11 00 Facility Water Distribution 22 30 00 Plumbing Equipment 22 40 00 Plumbing Fixtures 23 00 00 Heating, Ventilating, and Air Conditioning 23 00 01 Operation and Maintenance of HVAC Systems 23 09 00 Instrumentation and Control for HVAC 23 30 00 HVAC Air Distribution Construction Management Design Build Industrial Contractor

02 00 00 Existing Conditions 02 41 00 Demolition 02 50 00 Site Remediation 02 60 00 Contaminated Site Material Removal 02 80 00 Facility Remediation 03 00 00 Concrete 03 01 00 Maintenance of Concrete 03 10 00 Concrete Forming and Accessories 03 20 00 Concrete Reinforcing 03 30 00 Cast-in-Place Concrete 03 31 00 Structural Concrete 03 33 00 Architectural Concrete 03 40 00 Precast Concrete 03 50 00 Cast Decks and Underlayment 03 80 00 Concrete Cutting and Boring 03 90 00 Mass Concrete 31 00 00 Earthwork 32 00 00 Exterior Improvements 32 05 16 Aggregates for Exterior Improvements 32 10 00 Bases, Ballasts, and Paving 32 16 00 Curbs, Gutters, Sidewalks, and Driveways 32 17 00 Paving Specialties 32 17 23 Pavement Markings 32 18 00 Athletic and Recreational Surfacing 32 30 00 Site Improvements 32 31 00 Fences and Gates 32 31 19 Decorative Metal Fences and Gates 32 32 00 Retaining Walls 32 32 26 Metal Crib Retaining Walls 32 34 00 Fabricated Bridges 32 80 00 Irrigation 32 90 00 Planting Building Contractor Construction Management Design Build General Contractors & Specialty Contractors Highway Contractor Industrial Contractor Residential/Multi Family Contractor Utility Contractor

02 00 00 Existing Conditions 02 41 00 Demolition 31 00 00 Earthwork 31 05 16 Aggregates for Earthwork 31 10 00 Site Clearing 31 20 00 Earth Moving 31 22 00 Grading 31 23 00 Excavation and Fill 31 25 00 Erosion and Sedimentation Controls Building Contractor Highway Contractor Industrial Contractor Utility Contractor

Building Contractor Design Build Industrial Contractor

Industrial Contractor 01 45 00 Quality Control 01 50 00 Temporary Facilities and Controls 01 52 19 Sanitary Facilities 01 55 26 Traffic Control 01 56 00 Temporary Barriers and Enclosures Building Contractor 02 00 00 Existing Conditions 02 41 00 Demolition 02 50 00 Site Remediation 02 60 00 Contaminated Site Material Removal 02 80 00 Facility Remediation 03 00 00 Concrete 06 00 00 Wood, Plastics, & Composites 06 01 00 Maintenance of Wood, Plastics, and Composites 06 10 00 Rough Carpentry 06 20 00 Finish Carpentry 06 22 00 Millwork 06 40 00 Architectural Woodwork 06 50 00 Structural Plastics 06 80 00 Composite Fabrications

07 00 00 Thermal & Moisture Protection 07 10 00 Dampproofing and Waterproofing 07 20 00 Thermal Protection Industrial Contractor Residential/Multi Family Contractor Thermal/Moisture Protection

Building Contractor Construction Management Design Build Industrial Contractor Residential/Multi Family Contractor

Design Build Highway Contractor Industrial Contractor

Building Contractor Construction Management Design Build Industrial Contractor Residential/Multi Family Contractor

Division 31 - Earthwork Division 32 - Exterior Improvements Division 33 - Utilities Division 34 - Transportation Division 35 - Waterway and Marine Construction Building Contractor Construction Management Design Build General Contractors & Specialty Contractors Highway Contractor Industrial Contractor Residential/Multi Family Contractor Specialty Contractor Utility Contractor

01 45 00 Quality Control 01 50 00 Temporary Facilities and Controls 01 56 00 Temporary Barriers and Enclosures 02 41 00 Demolition 31 22 00 Grading 31 23 00 Excavation and Fill 31 25 00 Erosion and Sedimentation Controls 31 30 00 Earthwork Methods 31 40 00 Shoring and Underpinning Industrial Contractor Residential/Multi Family Contractor Trucking and Hauling Utility Contractor 32 10 00 Bases, Ballasts, and Paving 32 80 00 Irrigation 33 10 00 Water Utilities 33 16 00 Water Utility Storage Tanks 33 30 00 Sanitary Sewerage 33 40 00 Stormwater Utilities

31 10 00 Site Clearing 31 30 00 Earthwork Methods 31 62 00 Driven Piles 33 10 00 Water Utilities 33 30 00 Sanitary Sewerage 34 80 00 Bridges Division 35 - Waterway and Marine Construction Industrial Contractor Utility Contractor

Construction Management Highway Contractor Industrial Contractor Utility Contractor 02 00 00 Existing Conditions 03 00 00 Concrete 31 62 00 Driven Piles 32 00 00 Exterior Improvements 33 00 00 Utilities 33 80 00 Communications Utilities 34 40 00 Transportation Signaling and Control Equipment