Major Classifications	Sub-Classifications
Building Construction	Acoustical/Drywall Treatments
	Asbestos Abatement or Removal
	Athletic Fields/Golf Courses
	Bleachers & grandstands
	Building Specialties
	Canopies
	Carpentry
	Chemical Cleaning
	Commercial Cooler
	Concrete
	Concrete Pumping
	Concrete Reinforcing
	Construction Management
	Conveyor Systems
	Demolition
	Detention Equipment
	Doors
	Driveways, Parking areas, Aspahalt/Concrete
	Elevated Storage Tanks
	Elevator & Escalators
	Exhibit Construction
	Fencing
	Fireproofing
	Floor Covering
	Food Service Equipment
	Foundation, Caissons, Pile driving
	Foundations for Buildings, Equipment,or Machinery
	Glass, Glazing, Windows & Skylights
	Grain Elevators & silos
	Greenhouse Construction
	Hazardous Material Abatement & Remediation
	Hydroblasting & Sandblasting
	Incinerator Construction
	Install. For Cold Storage & Bldgs.
	Install. Of Construction Specialties, Furniture & Equipment
	Install. Of Equipment, Machinery & Engines
	Install. Of Linings & Coatings
	Install. Of Pneumatic Tubes & Conveyors
	Insulation
	Landscaping, Grading & Beautification
	Lathing,Plastering , Stuccoing
	Loading Dock Equipment
	Marinas
	Masonry Restoration
	Masonry, Brick & Stone
	Millwork
	Millwright
	OrnamentalIron, Steel Buildings, misc. metals
	Painting
	Painting, Interior Decorationg, Wall covering
	Remodeling
	Rigging, house Moving, Wrecking & Dismantling
	Roof Decks
	Roofing, Sheet Metal & Siding
	Scaffolding
	Sign Eriction
	Structural Steel
	Swimming Pools
	Tennis Courts
	Towers
	Waterproofing
	Welding
	Window Treatments
	Wood Yard Systems
	
Electrical Work	Alarm Systems & Equipment/Access Systems & Security
	Cathodic Protection
	Communication Systems
	Electronic & Computer Installation
	Energy Management
	Transmission & Distribution Lines
	
Heavy Construction	Air Pollution Control
	Boring & Tunneling
	Chemical Cleaning
	Clearing, Grubbing & Snagging
	Commercial Coolers
	Concrete
	concrete pumping
	concrete Reinforcing
	Conveyor Systems
	Demolition
	Dredging
	Elevated Storage Tanks
	Fencing
	Fire Sprinkler Work
	Fireproofing
	Foundation, Caissons, Pile Driving
	Foundations for Buildings, Equipment or machinery
	Fueling Systems
	Geotextile and Membrane Liners
	Grain Elevators & Silos
	Incinerator Construction
	industrial Piping
	Industrial Plant Maintenance
	Install. Of Cold Storage & Buildings
	Install. Of Equipment, Machinery & Engines
	Install. Of Linings and coatings
	Install. Of Pneumatic Tubes & Conveyors
	Irrigation Systems
	Loading Dock Equipment
	Marinas
	Median Barrier Walls
	Millwright
	Oil Field Construction
	Ornamental Iron, Steel Buildings, misc. metals
	Railroads
	Retention Systems
	Rigging, House Moving, Wrecking & Dismantling
	Steel Tanks & Vessels
	Transmission & Distribution Lines
	Underwater Construction & repair
	Waterproofing
	Welding
	
Mechanical Work	Cathodic Protection
	Commercial Coolers
 	Detention Equipment
	Energy Management
	Fire Sprinkler Work
	Food Service Equipment
	Fueling Systems
	Gas Piping
	HVAC
	Industrial Piping
	Industrial Plant Maintenance
	Install. Of Pneumatic Tubes & Conveyors
	Instrumentation
	Insulation
	Irrigation Systems
	Plumbing
	Refrigeration
	Swimming Pools
	TV Inspection, Sewer Line & Inspection
	Underground Utilities
	Welding
	
Highway, Street & Bridge Construction	Asphalt Milling/Recycling
	Athletic Fields/Golf Courses
	Boring & Tunneling
	Clearing, Grubbing & Snagging
	Demolition
	Driveways, Parking Areas, Asphalt/Concrete
	Excavation, Grading & Drainage
	Fencing
	Foundations, Caissons, Pile Driving
	Hydroblasting & Sandblasting
	Landscaping, Grading & Beautification
	Median Barrier Walls
	soil Drainage Wicks
	Tennis Courts
	Traffic Control, Signs, Stripping, Guard Rails/med. Barriers
	Undersealing or Leveling of Roads
	
Municipal and Public Works Construction	Athletic Fields/ Golf Courses
	Boring & Tunneling
	Clearing, Grubbing & Snagging
	Concrete & Reinforcing
	Demolition
	Directional Boring/Pipe Install.
	Drainage, Storm Sewers & Structures
	Driveways & Parking Areas
	Elevated Storage Tanks
	Fencing
	Gas Piping
	Irrigation Systems
	Landfill & Garbage Disposal Construction
	Landscaping, Grading & Beautification
	Masonry, Brick & Stone
	Portable Water Distribution & Transmission Lines
	Rip Rap Placement
	Roads, Streets, Curbs, Gutter & Sidewalks
	Sanitary Sewage Collection Systems
	Sewage Disposal Lagoons
	Sewer Treatment Plants
	Slip Lining & Pipe Bursting
	Swimming Pools & Tennis Courts
	T.V. Inspection of Sewer Lines & Rehabilitation
	Underground utilities
	Water Purification & Filter Plants
	Well Drilling