T3 WILLIAMSON MECHANICAL, L.L.C.

Plumbing, Heating, and Air-Conditioning Contractors

Establishments in this category are primarly engaged in installing and servicing plumbing, heating, and air-conditioning equipment. Contractors in this industry may provide both parts and labor when performing work. The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Cooling tower installation
Heating, ventilation, and air-conditioning (HVAC) contractors
Duct work (e.g., cooling, dust collection, exhaust, heating, ventilation) installation
Lawn sprinkler system installation
Fire sprinkler system installation
Mechanical contractors
Fireplace, natural gas, installation
Refrigeration system (e.g., commercial, industrial, scientific) installation
Furnace installation
Sewer hookup and connection, building

Other Building Equipment Contractors

Establishments in this category are primarly engaged in installing or servicing building equipment (except electrical, plumbing, heating, cooling, or ventilation equipment). The repair and maintenance of miscellaneous building equipment is included in this industry. The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Automated and revolving door installation
Lightning protection equipment (e.g., lightning rod) installation
Boiler and pipe insulation installation
Machine rigging
Commercial-type door installation
Millwrights
Conveyor system installation
Revolving door installation
Overhead door, commercial- or industrial-type, installation
Dismantling large-scale machinery and equipment
Elevator installation
Satellite dish, household-type, installation
Escalator installation
Vacuum cleaning system, built-in, installation
Gasoline pump, service station, installation

Flooring Contractors

Establishments in this category are primarly engaged in the installation of resilient floor tile, carpeting, linoleum, and hardwood flooring. The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Carpet, installation only
Resilient floor tile or sheet (e.g., linoleum, rubber, vinyl), installation only
Vinyl flooring contractors
Resurfacing hardwood flooring
Hardwood flooring, installation only
Floor laying, scraping, finishing, and refinishing

Other Building Finishing Contractors

Establishments in this category are primarly engaged in building finishing trade work (except drywall, plaster, and insulation work; painting and wall covering work; flooring work; tile and terrazzo work; and finish carpentry work). The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Bathtub refinishing, on-site
Fabricating metal cabinets or countertops on site
Closet organizer system installation
Modular furniture system attachment and installation
Concrete coating, glazing, or sealing
Trade show exhibit installation and dismantling
Countertop and cabinet, metal (except residential-type), installation
Waterproofing contractors
Drapery fixture (e.g., hardware, rods, tracks) installation
Window shade and blind installation

Other Millwork (including Flooring)

This includes establishments primarily engaged in manufacturing millwork (except wood windows, wood doors, and cut stock).

Illustrative Examples:

Clear and finger joint wood moldings manufacturing
Decorative wood moldings (e.g., base, chair rail, crown, shoe) manufacturing
Ornamental woodwork (e.g., cornices, mantel) manufacturing
Planing mills, millwork
Stairwork (e.g., newel posts, railings, stairs, staircases), wood, manufacturing
Wood flooring manufacturing
Wood shutters manufacturing

Plastics Pipe and Pipe Fitting Manufacturing

This includes establishments primarily engaged in converting plastics resins into plastics pipes and pipe fittings.

Cut Stone and Stone Product Manufacturing

This includes establishments primarily engaged in cutting, shaping, and finishing granite, marble, limestone, slate, and other stone for building and miscellaneous uses. Stone product manufacturing establishments may mine, quarry, or purchase stone.

Fabricated Pipe and Pipe Fitting Manufacturing

This includes establishments primarily engaged in fabricating, such as cutting, threading, and bending, metal pipes and pipe fittings made from purchased metal pipe.

Wood Kitchen Cabinet and Countertop Manufacturing

Establishments in this category are primarly engaged in manufacturing wood or plastics laminated on wood kitchen cabinets, bathroom vanities, and countertops (except freestanding). The cabinets and counters may be made on a stock or custom basis.

Other Airport Operations

This includes establishments primarily engaged in (1) operating international, national, or civil airports, or public flying fields or (2) supporting airport operations, such as rental of hangar space, and providing baggage handling and/or cargo handling services.

Engineering Services

Establishments in this category are primarly engaged in applying physical laws and principles of engineering in the design, development, and utilization of machines, materials, instruments, structures, processes, and systems. The assignments undertaken by these establishments may involve any of the following activities: provision of advice, preparation of feasibility studies, preparation of preliminary and final plans and designs, provision of technical services during the construction or installation phase, inspection and evaluation of engineering projects, and related services.

Illustrative Examples:

Civil engineering services
Environmental engineering services
Construction engineering services
Mechanical engineering services
Engineers' offices
Robotics automation engineering services

Building Inspection Services

Establishments in this category are primarly engaged in providing building inspection services. These establishments typically evaluate all aspects of the building structure and component systems and prepare a report on the physical condition of the property, generally for buyers or others involved in real estate transactions. Building inspection bureaus and establishments providing home inspection services are included in this industry.

Testing Laboratories and Services

Establishments in this category are primarly engaged in performing physical, chemical, and other analytical testing services, such as acoustics or vibration testing, assaying, biological testing (except medical and veterinary), calibration testing, electrical and electronic testing, geotechnical testing, mechanical testing, nondestructive testing, or thermal testing. The testing may occur in a laboratory or on-site.

Other Services to Buildings and Dwellings

Establishments in this category are primarly engaged in providing services to buildings and dwellings (except exterminating and pest control; janitorial; landscaping care and maintenance; and carpet and upholstery cleaning).

Illustrative Examples:

Building exterior cleaning services (except sandblasting, window cleaning)
Swimming pool cleaning and maintenance services
Chimney cleaning services
Ventilation duct cleaning services
Drain or gutter cleaning services

Electronic and Precision Equipment Repair and Maintenance

Establishments in this category are primarly engaged in repairing and maintaining one or more of the following: (1) consumer electronic equipment; (2) computers; (3) office machines; (4) communication equipment; and (5) other electronic and precision equipment and instruments, without retailing these products as new. Establishments in this industry repair items, such as microscopes, radar and sonar equipment, televisions, stereos, video recorders, computers, fax machines, photocopying machines, two-way radios, cellular telephones, and other communications equipment, scientific instruments, and medical equipment.