GCA – Classifications


Scope of Work 


A – Engineering

B – Building

C-01 Acoustical Tile

C-02 Aluminum Shingle & Siding

C-03 Asphalt Paving & Surfacing

C-04 Boiler, Hot Water Heating & Steam Fitting

C-05 Cabinet & Millwork

C-06 Carpentry Framing

C-07 Carpet Laying

C-08 Cement Concrete

C-09 Septic Tank

C-10 Concrete Paving & Surfacing

C-11 Demolition

C-12 Drywall

C-13 Electrical

C-13a Pole & Line

C-14 Electrical Sign

C-15 Electronic System

C-16 Elevator Installation

C-17 Excavating, Grading & Trenching

C-18 Fencing

C-19 Fire & Burglar Alarm

C-20 Fire Protection

C-21 Floor Covering

C-22 Glazing

C-23 Gunite

C-24 House & Building Moving & Wrecking

C-25 Institutional & Commercial Equipment

C-26 Insulation

C-27 Landscaping

C-28 Lathing

C-29 Lift Slab

C-30 Limited Home Improvement & Renovation

C-31 Masonry

C-32 Ornamental Metal

C-33 Painting & Decorating

C-34 Pest Control

C-35 Pile Driving & Foundation

C-36 Plastering

C-37 Plumbing

C-38 Post Tensioning

C-39 Reconditioning Concrete Pipeline

C-40 Refrigeration

C-41 Reinforcing Steel

C-42 Roofing

C-43 Sewer, Sewage Disposal, Drain, Cement Pipe Laying

C-44 Sheet Metal

C-45 Spray Texture Coatings

C-46 Stone Masonry

C-47 Structural Pest Control

C-48 Structural Steel

C-49 Swimming Pool

C-50 Tile

C-51 Warm Air Heating Ventilating & Air Conditioning

C-53 Solar

C-54 Water Chlorination

C-55 Waterproofing

C-56 Welding

C-57 Well Drilling

C-58 Wood Flooring

C-68 Classified Specialist – Communication

C-68 Classified Specialist – Environmental Consultants

C-68 Classified Specialist – Epoxy

C-68 Classified Specialist – Above/underground fuel tank installation & fuel leak monitoring system

C-68 Classified Specialist – Aviation/Airport Support Services

C-68 Classified Specialist – Electrical Cable Casing

C-68 Classified Specialist – Epoxy Coating

C-68 Classified Specialist – Epoxy Injection

C-68 Classified Specialist – Generator maintenance, installation of generator & shelter installation

C-68 Classified Specialist – Guard Railing, Painting & Road Marking

C-68 Classified Specialist – Horizontal Directional Drilling

C-68 Classified Specialist – Pipe Fitting

C-68 Classified Specialist – Sand Blasting

C-68 Classified Specialist – Shutter/Typhoon Shutter, Blinds and Window Covering & Installation

C-68 Classified Specialist – Signs

C-68 Classified Specialist – Solar Power System

C-68 Classified Specialist – Telecommunications

C-68 Classified Specialist – Toxic mold remediation, asbestos abatement, lead based paint abatement and removal of hazardous material

C-68 Classified Specialist – Water Blasting

C-68 Classified Specialist – Water Oil & Asbestos



Administrative/Research Services

Air Conditioning & Refrigeration (HVAC/R) Supplies

Apartment Rentals

Appliance Wholesale/Retail

Arbitration/Mediation Services

Architectural Services

Automotive Maintenance, Services & Dealership

Bonding Services

Business Valuation/Appraisal Services

Car Rental

Cash (Secured) Transit & Deposit

Civil Engineering

Commercial Automotive Wholesaler/Supplier


Construction Clean-Up

Construction Equipment Sales/Rental/Leasing

Construction Management Services

Construction Material Supplier

Construction Research, Data and Information Services

Construction Tool Supplier


Crane Inspection

Crane Services

Design Consultancy

Developers/Real Estate

Diesel Equipment Repair

Document Imaging Solutions Dealer

Doors, Windows & Shutter Suppliers

Education & Trades Training

Electrical Suppliers

Emergency Response Programs and Planning

Energy Management, BAS, DDC Systems- Sales/Design/ Service

Engineering Services

Environmental Services/Supplier

Equipment Supplier

Facilities Management

Film Production Services

Financial Institutions

Financial Planning

Fire Protection

Food Services

Freight Handling &/or Logistics

Fuel Management Services

Furniture Wholesale/Retail

Generator Sales & Service

Golf Wholesale/Retail

Hardware – Retail

Healthcare Insurance

Hearing Conservation

Heavy Equipment Sales/Rental/Leasing

Home & Garden Supplier

Hotels, Restaurants, Dinner Theater and Banquet Facilities

Human Resource Consultants & Training

Industrial Coatings

Information Technology & System Development

Inspection Services & Trading

Insulating Concrete Forms/Distributor

Insurance Services

Irrigation and Landscape Products

Janitorial Services


Land Surveying

Landscaping, Lawn Care Services

Legal Services

Life Insurance



Marketing & Communications

Media Publication


Metal Suppliers

Military Contractors

Munitions & Explosives of Concern (MEC)/ Unexploded Ordinance (UXO) Consulting

Network & Communications

Non-Profit Organization/Government

Occupational Health Screening/ Drug & Alcohol Testing

Office Supplies

Overseas Recruitment Agency

Paint Supplier

Petroleum & Lubricant Products/Services

Plumbing Supplier

Pre-cast Concrete

Pre-cast or Insulated Concrete


Procurement Counseling



Real Estate Brokerage

Real Estate Developers

Real Estate Sales

Real Estate Services


Renewable Energy Consulting

Residential Lending Institutions

Retirement Plans/Administrators

Risk Management

Safety Equipment Suppliers

Safety Training

Sanitary Ware Wholesaler/Retailer

Security Services

Ship Repair

Shipping & Transportation

Shredding and destruction

Sign Supplier

Solid Waste Disposal

Steel Manufacturer/Distributor


Temporary Employment Services

Therapeutic Massage

Third Party Administrator

Tiles & Tile Accessories

Title Insurance and Escrow Co.

Tools Rental

Tours and Transportation Services

Transportation and Logistics Consultant

Typhoon Shutters

Vehicle Sales, Rental, Leasing

Vessel Operating Common Carrier

Water & Wastewater Services

Water Filtration System for Residential & Commercial

Waterproofing Materials


Welding Consultants/Inspectors

Wholesale Distributor