Classifications

Contractors/Artistic Rock & Water Habitats	Contractors/Highway
Contractors/Asbestos	Contractors/Industrial
Contractors/Bridge	Contractors/International
Contractors/Bridge & Tunneling	Contractors/Landscaping
Contractors/Buildings	Contractors/Marine
Contractors/Carpentry	Contractors/Masonry
Contractors/Communications	Contractors/Mechanical
Contractors/Concrete	Contractors/Multi-Family Housing
Contractors/Construction Management	Contractors/Painting
Contractors/Design-Build	Contractors/Remodeling
Contractors/Electrical	Contractors/Residential
Contractors/Environmental	Contractors/Roofing
Contractors/Erosion Control	Contractors/Sheet Metal
Contractors/Fireproofing	Contractors/Tenant Improvement
Contractors/Heavy Civil	Contractors/Utility
Contractors/Heavy Highway	Contractors/Window Coverings

Accountants	Hiring Consultant
Accountants/Taxation/Federal & State	Human Resources
Architects	HVAC - Sales/Service/Repair
Attorneys/Antitrust/Trade Regulation	Hydro-Excavating
Attorneys/Bankruptcy/Reorganization	Industrial Cleaning
Attorneys/Claims/Arbitration/Litigation	Information Services
Attorneys/Construction Law	Insurance/Bonds & Surety
Attorneys/Corporate/Partnership/JV/LLC	Insurance/Commercial
Attorneys/Environmental	Insurance/Employee Benefits
Attorneys/Government Contracting	Insurance/Property and Casualty
Attorneys/Insurance Matters	Insurance/Self Risk Management
Attorneys/Labor and Employment	Internet/Construction & Information Services
Attorneys/Liens/Bonds/Retainage	Janitorial Service
Attorneys/Pension/Profit Sharing Plans	Job Placement Services
Attorneys/Real Estate	Maintenance - Lawn Care
Attorneys/Safety (OSHA/DOSH)	Manufacturing
Attorneys/Taxation/Federal/State	Materials/Drywall
Attorneys/Workers Compensation	Mining
Attorneys/Zoning/Land Use	Mobile/Trailer Offices
Auctions/Online	Occupational Medicine
Banks	Outreach Specialist
Bid Tools	Painting & Coatings
Building Materials	Parking Lot Maintenance
Business Capital	Payroll
Cabinetry	Permitting
Certification/Training - Crane & Rigging	Plan Center/Internet
Chemical Suppliers	Plumbing Systems
Cleaning & Restoration Services	Pre-Apprentice Placement Agency
Commercial Divers	Printing/Publications
Commercial Lending	Project Executive
Constructability Reviews	Project Management
Construction Management	Project Management Tools
Construction Management Software	Project Management/Training
Construction Management Tools	Promotional Merchandise
Construction Software	Property Management
Construction Software - Sales/Training/Consulting	Quality Control/Assurance/Requirements
Consultant Management Firm	Real Estate Development
Consultants	Recycling Services
Consultants/Asbestos	Refrigeration
Consultants/Claims	Rentals/Sales - Containers
Consultants/Claims/Litigation	Rentals/Sales - Equipment
Consultants/Construction Management	Rentals/Sales - Fence
Consultants/Education and Training	Rentals/Sales - Traffic Control Devices
Consultants/Engineering	Reprographics
Consultants/Environmental	Rock/Gravel/Sand
Consultants/Fixtures, Furniture, and Equipment	Safety Equipment
Consultants/Forestry	Safety Supplies
Consultants/Human Resources	Safety Training
Consultants/Meteorological	Sandbags (empty/prefilled)
Consultants/Risk Management	Sanitary Facilities
Consultants/Roofing	Scheduling
Consultants/Roofing and Waterproofing	Security Guard Services
Consultants/Safety	Security Systems
Consultants/Technology	Sewer & Septic/Cleaning & Maintenance
Cybersecurity	Small Business Outreach Professionals
Delay Resolution	Staffing
Demolition Waste Disposal Facility	Steel Fabrication
Detectable Warnings/Truncated Domes	Stormwater Management Products
Developers/Land and Property	Subsurface Investigation
Directories	Supplier - Geosynthetics
Disposal Services	Supplies - Asphalt
Document Management	Supplies - Cement
Earthwork Services	Supplies - Concrete
Educational Institutions - Construction Curriculums	Supplies - Erosion Control
Electrical Services	Supplies - Finishes
Employee Benefits	Supplies - Glass
Employee Verification	Supplies - Industrial Maintenance & Repair
Employee/Development/Training	Supplies - Metals
Employment Specialist	Surveyors
Engineering	Talent Acquisition Strategist
Engineering/Geotechnical	Telecommunications Services
Engineers/Civil	Testing/Inspecting Services
Engineers/Structural	Thermal/Moisture Protection
Equipment Accessories	Time & Attendance
Estate and Investment Planning	Time Impact Analysis
Estimating System Provider	Track-Out Plates
Executive Search Firm	Traffic Control
Financial Advisors	Transportation - Shuttles
Fire Safety Services	Travel
Fire Suppression Services	Trucking
Fleet Management	Utilities - Maintenance/Locating
Flood Control	Waste Collection
Generators - Sales/Service/Installation	Water & Wastewater
Geophysical Investigations	Woods, Plastics & Composites
Glass Fabrication	Workforce Employment
Ground Penetrating Radar

Construction Progress Documentation	Temporary Elevators
Construction Progress Reporting	Temporary Lighting
Project Coordination	Temporary Telecommunications
Project Management and Coordination	Temporary Utilities
Sanitary Facilities

Asbestos Abatement	Precautions for Mold Remediation
Asbestos Assessment	Recycling
Asbestos Remediation	Remediation Soil Stabilization
Comingled	Removal and Disposal of Asbestos Containing Materials
Contaminated Site Material Removal	Removal and Disposal of Asbestos Contaminated Soils
Demolition	Removal and Disposal of Contaminated Soils
Demolition and Structure Moving	Removal and Disposal of Materials with Mold
Environmental Assessment	Removal and Disposal of Organically Contaminated Soils
Excavation and Handling of Contaminated Material	Removal and Disposal of Polychlorinate Biphenyl Contaminated Soils
Exploratory Excavations	Removal and Disposal of Polychlorinate Biphenyls
Facility Remediation	Removal and Salvage of Construction Materials
Geomembrane Waste Containment	Removal and Salvage of Historic Construction Materials
Handling of Lighting Ballasts and Lamps Containing PCBs and Mercury	Scrap Metal
Hazardous Material Assessment	Site Containment
Lead Remediation	Site Remediation
Maintenance of Facility Remediation	Soil Vapor Extraction
Maintenance of Site Remediation	Structure Demolition
Maintenance of Underground Storage Tank Removal	Surface Cleaning Decontamination
Mold Remediation	Surface Removal Decontamination
Mold Remediation Clearance Air Sampling	Transportation and Disposal of Hazardous Materials
Mold Remediation Preparation and Containment	Underground Storage Tank Removal
Physical Decontamination	Waste Containment
Plastics	Water Decontamination
Polychlorinate Biphenyl Remediation	Wood

Architectural Cast-in Place Concrete Forming	High-Tolerance Concrete Floor Finishing
Architectural Concrete	Insulating Concrete Forming
Bonded Post-Tensioned Concrete	Lift-Slab Concrete
Cast Underlayment	Low Density Concrete
Cast-in-Place Concrete	Maintenance of Concrete
Chain Concrete Wall Sawing	Permanent Stair Forming
Colored Concrete Finishing	Pneumatically Placed Concrete
Concrete	Post-Tensioned Concrete
Concrete Core Drilling	Post-Tensioned Concrete Preparation
Concrete Curing	Precast Architectural Concrete
Concrete Cutting	Precast Concrete Specialties
Concrete Cutting and Boring	Precast Structural Concrete
Concrete Finishing	Pumped Concrete
Concrete Forming	Reinforcing Steel
Concrete Forming and Accessories	Roller-Compacted Concrete
Concrete Reinforcing	Shotcrete
Concrete Shoring	Site-Cast Concrete
Concrete Slip Forming	Specialty Placed Concrete
Concrete Topping	Stamped Concrete Finishing
Exposed Aggregate Concrete Finishing	Stressing Tendons
Faced Architectural Precast Concrete	Structural Cast-in-Place Concrete Forming
Falsework	Structural Concrete
Flat Concrete Sawing	Tilt-Up Concrete
Glass-Fiber-Reinforced Concrete	Tooled Concrete Finishing
Grooved Concrete Surface Finishing	Track Mounted Concrete Wall Sawing
Grouting	Unbonded Post-Tensioned Concrete
Hand Concrete Wall Sawing	Underwater Placed Concrete
Heavy-Duty Concrete Floor Finishing	Wire Concrete Wall Sawing

Adobe Unit Masonry	Masonry Anchorage and Reinforcing
Architectural Concrete Unit Masonry	Masonry Anchors
Brick Masonry	Masonry Cavity Drainage, Weepholes, and Vents
Brick Veneer Masonry	Masonry Control and Expansion Joints
Calcium Silicate Manufactured Brick Masonry	Masonry Embedded Flashing
Calcium Silicate Manufactured Stone Masonry	Masonry Fireplaces
Cast Stone Masonry	Masonry Grouting
Castable Refractory Masonry	Masonry Mortaring
Cavity Wall Unit Masonry	Masonry Reinforcing Bars
Ceramic Glazed Clay Masonry	Masonry Restoration Mortaring
Chemical-Resistant Brick Masonry	Masonry Unit Schedule
Chemical-Resistant Masonry Grouting	Masonry-Supported Stone Cladding
Chemical-Resistant Masonry Mortaring	Metal-Supported Unit Masonry Panels
Clay Tile Masonry	Molded-Face Concrete Unit Masonry
Clay Unit Masonry	Mortar-Set, Concrete-Filled Masonry Units
Combustion Chamber Masonry	Multiple-Wythe Unit Masonry
Commissioning of Masonry	Prefaced Concrete Unit Masonry
Common Work Results for Masonry	Refractory Brick Masonry
Composite Unit Masonry	Refractory Masonry
Concrete Form Masonry Units	Refractory Masonry Mortaring
Concrete Unit Masonry	Schedules for Corrosion-Resistant Masonry
Concrete Unit Veneer Masonry	Schedules for Manufactured Masonry
Corrosion-Resistant Masonry	Schedules for Masonry
Dry-Placed Stone	Schedules for Refractory Masonry
Dry-Stacked, Concrete-Filled Masonry Units	Schedules for Stone Assemblies
Engineered Masonry Grouting	Schedules for Unit Masonry
Engineered Masonry Mortaring	Site-Cast Adobe Unit Masonry
Epoxy Masonry Mortaring	Sound-Absorbing Concrete Unit Masonry
Exposed Aggregate Concrete Unit Masonry	Split-Face Concrete Unit Masonry
Exterior Stone Cladding	Steel-Stud-Supported Stone Cladding
Flue Liner Masonry	Stone Anchors
Fluted Concrete Unit Masonry	Stone Assemblies
Glass Unit Masonry	Stone Cleaning
Glass Unit Masonry Floors	Stone Maintenance
Glass Unit Masonry Skylights	Stone Masonry
Glazed Structural Clay Tile Masonry	Stone Panels for Curtain Walls
Grid-System-Supported Stone Cladding	Stone Restoration
Insulated Concrete Unit Masonry	Strongback-Frame-Supported Stone Cladding
Interlocking Concrete Unit Masonry	Structural Clay Tile Masonry
Maintenance of Corrosion-Resistant Masonry	Surface Bonding Masonry Mortaring
Maintenance of Manufactured Masonry	Surface-Bonded Brick Masonry
Maintenance of Masonry	Surface-Bonded Concrete Unit Masonry
Maintenance of Refractory Masonry	Terra Cotta Masonry
Maintenance of Stone Assemblies	Testing and Sampling Brick Units for Restoration
Maintenance of Unit Masonry	Truss-Supported Stone Cladding
Manufactured Adobe Unit Masonry	Unit Masonry
Manufactured Brick Masonry	Unit Masonry Cleaning
Manufactured Masonry	Unit Masonry Maintenance
Manufactured Stone Masonry	Unit Masonry Panels
Masonry	Unit Masonry Restoration
Masonry Accessories	Vertical Glass Unit Masonry

Aluminum Decking	Metal Specialties
Continuous Joint Reinforcing	Metal Stair Nosings
Decorative Formed Metal	Metal Stair Treads
Decorative Metal	Metal Stairs
Decorative Metal Railings	Metal Support Assemblies
Decorative Metal Stairs	Metals
Formed Metal Fabrications	Pipe and Tube Railings
Metal Castings	Shop-Applied Coatings for Metal
Metal Decking	Steel Decking
Metal Fabrications	Steel Joist Framing
Metal Floor Plates	Structural Metal Framing
Metal Gratings	Structural Steel Framing
Metal Joists	Vitrified Clay Liner Plate
Metal Railings

Finish Carpentry	Rough Carpentry
Architectural Millwork	Sheathing
Wall Paneling	Structural Panels
Heavy Timber Construction	Wood Decking
Heavy Timber Framing	Wood Framing

Architectural Wood Casework	Sheet Metal Flashing and Trim
Architectural Woodwork	Sheet Metal Roofing
Dampproofing and Waterproofing	Shop-Fabricated Structural Wood
Finish Carpentry	Siding
Firestopping	Steel Siding
Flashing and Sheet Metal Restoration	Thermal and Moisture Protection
Foamed-In-Place Insulation	Thermal Insulation
Glued-Laminated Construction	Thermal Protection
Membrane Roofing	Vehicular Traffic Coatings
Metal Roof Panels	Wood Paneling
Millwork	Wood Stairs and Railings

Wood Doors and Frames	Openings
Curtain Wall and Glazed Assemblies	Operation and Maintenance of Metal Doors and Frames
Entrances and Storefronts	Operation and Maintenance of Openings
Entrances, Storefronts, and Curtain Walls	Roof Windows
Glazing	Roof Windows and Skylights
Metal Doors and Frames	Windows

Abrasion-Resistant Coatings	Maintenance of Painting and Coating
Acoustical Ceilings	Masonry Flooring
Specialty Ceilings	Painting
Wood Ceiling Panels	Painting and Coating
Carpeting	Signage
Ceramic Tiling	Special Coatings
Concrete and Masonry Coatings	Specialty Flooring
Exterior Painting	Staining and Transparent Finishing
Exterior Staining and Finishing	Stone Tiling
Finishes	Terrazzo Flooring
Fire-Retardant Coatings	Tiling
Flexible Wood Sheets	Wall Carpeting
Flooring	Wall Coverings
High-Performance Coatings	Wall Finishes
Interior Painting	Wood Flooring

Awnings	Interior Specialties
Electronic Message Signage

Laboratory Fume Hoods	Healthcare Equipment
Laboratory Equipment	Foodservice Equipment

Laboratory Casework	Countertops
Casework	Manufactured Wood Casework
Concrete Countertops	Specialty Casework

Fabricated Engineered Structures	Special Construction
Metal Building Systems	Special Facility Components
Sound, Vibration, and Seismic Control

Conveying Equipment

Elevators

Fire Pumps	Fire-Suppression Standpipes
Fire Suppression	Fire-Suppression Water Storage
Fire-Extinguishing Systems	Water-Based Fire-Suppression Systems
Fire-Suppression Sprinkler Systems

Plumbing

Central Cooling Equipment	HVAC Air Cleaning Devices
Central Heating Equipment	HVAC Air Distribution
Central HVAC Equipment	HVAC Ducts and Casings
Decentralized HVAC Equipment	HVAC Insulation
Duct Insulation	HVAC Piping and Pumps
Heating, Ventilating, and Air Conditioning (HVAC)	Instrumentation and Control for HVAC

Integrated Automation

Integrated Automation Facility Controls

Composite Piles	Lighting
Electrical	Low-Voltage Electrical Transmission
Electrical and Cathodic Protection	Medium-Voltage Electrical Distribution
Exterior Athletic Lighting	Operation and Maintenance of Electrical Systems
Facility Electrical Power Generating and Storing Equipment	Roadway Lighting
Instrumentation and Control for Electrical Systems

Communications	Structured Cabling
Data Communications	Voice Communications

Electronic Access Control and Intrusion Detection	Electronic Safety and Security
Electronic Detection and Alarm	Electronic Surveillance
Electronic Monitoring and Control	Fire Detection and Alarm

Aggregates for Earthwork	Erosion and Sedimentation Controls
Anchor Tiebacks	Excavation
Auger Cast Grout Piles	Excavation and Fill
Bored and Augered Test Piles	Excavation Support and Protection
Bored and Socketed Piles	Foundation Anchors
Bored Concrete Piles	Foundation Performance Instrumentation
Bored Piles	Gabions
Clearing and Grubbing	Geosynthetic Soil Stabilization and Layer Separation
Cofferdams	Grading
Concrete Piles	Riprap
Dewatering	Shoring and Underpinning
Drilled Caissons	Shotcrete Soil Slope Stabilization
Drilled Concrete Piers and Shafts	Site Clearing
Drilled Micropiles	Slope Protection
Driven Piles	Soil Mixing Stabilization
Earth Moving	Soil Stabilization
Earthwork	Soil Treatment
Earthwork Methods	Steel Piles
Embankments	Timber Piles

Aggregate Surfacing	Paving Specialties
Asphalt Paving	Planting
Athletic Surfacing	Planting Accessories
Base Courses	Planting Irrigation
Bases, Ballasts, and Paving	Planting Preparation
Constructed Wetlands	Plants
Exterior Improvements	Retaining Walls
Fabricated Bridges	Site Improvements
Fences and Gates	Synthetic Resilient Surfacing
Flexible Paving	Transplanting
Flexible Paving Rehabilitation	Turf and Grasses
Flexible Paving Repair	Unit Paving
Flexible Paving Surface Treatment	Wetlands
Irrigation	Wetlands Restoration

Communications Distribution	Sanitary Utility Sewerage Piping
Communications Structures	Sanitary Utility Sewerage Structures
Communications Utilities	Site Grounding
Culverts	Storm Drainage Structures
Electrical Utilities	Storm Drainage Utilities
Electrical Utility Services	Storm Utility Drainage Piping
Electrical Utility Transmission and Distribution	Storm Utility Drainage Pumps
Fuel Distribution Utilities	Storm Utility Water Drains
High-Voltage Switchgear and Protection Devices	Subdrainage
Instrumentation and Control for Water Utilities	Utilities
Low Pressure Utility Sewerage	Utility Septic Tanks
Medium-Voltage Utility Switchgear and Protection Devices	Utility Substations
Ponds and Reservoirs	Utility Transformers
Sanitary Sewerage Utilities	Wastewater Utility Pumping Stations
Sanitary Utility Sewerage	Water Utilities
Sanitary Utility Sewerage Force Mains	Wireless Communications Distribution

Airfield Signaling and Control Equipment	Roadway Signaling and Control Equipment
Bridge Signaling and Control Equipment	Traffic Signals
Bridges	Transportation Construction and Equipment
Impact Attenuating Devices	Transportation Signaling and Control Equipment
Railway Signaling and Control Equipment	Vehicle Barriers
Roadway Construction	Vehicle Delineators

Concrete Gravity Dams	Waterway and Marine Construction
Dam Construction and Equipment	Waterway and Marine Construction and Equipment
Marine Construction and Equipment	Waterway Construction and Equipment
Underwater Construction

Instrumentation and Control for Process Systems

Cranes	Material Storage
Cranes and Hoists	Trucks/Trucking
Derricks

Water Pollution Control Equipment

Industry-Specific Manufacturing Equipment

Electrical Power Generation