Archived - Standard Industrial Classification - Establishments (SIC-E) 1980

F - Construction Industries

42 - Trade Contracting Industries

While general contractors, in response to market demand, build complete structures classifiable to broad specialization groups, trade contractors are classified by the specific component they contribute to the total structure. The specialized trade contractors are engaged in one aspect common to different structures requiring specialized skills or equipment. Normally they supply the general contractor with their specialized service but in repair construction, and to a lesser degree in new construction, trade contractors are often engaged as "prime contractors", or jobbers, dealing directly with the principals involved. Establishments primarily engaged in maintenance, i.e. cleaning, rather than repair construction are classified in Industry Group 995 - Services to Buildings and Dwellings those primarily engaged in maintenance of highways, streets and bridges are classified in 4591 - Highway, Street and Bridge Maintenance Industry and those primarily engaged in maintaining wharves and docks are classified in 4559 - Other ServiceIndustries Incidental to Water Transport.

429 - Other Trade Work

Establishments primarily engaged in the installation of elevators and escalators, ornamental metal, residential swimming pools and other construction work not elsewhere classified.

4291 - Elevator and Escalator Installation

Establishments primarily engaged in the installation and repair of elevators and escalators, moving sidewalks and similar conveying equipment.

4292 - Ornamental and Miscellaneous Fabricated MetalInstallation

Establishments primarily engaged in the installation and repair of standard or custom fabricated sheet metal components (except for roofing and duct work), decorative iron or steel work, ornamental or architectural metal work. Establishments primarily engaged in installation of sheet metal roofing are classified in 4236 - Sheet Metal and Built-Up Roofing, construction and those primarily engaged in the installation of sheet metal duct work are classified in 4244 - Sheet Metal and Other Duct Work, construction.

4293 - Residential Swimming Pool Installation

Establishments primarily engaged in the installation of permanent and semi-permanent residential swimming pools of all types.

4299 - Other Trade Work n.e.c.

Establishments primarily engaged in specialized trade work not elsewhere classified.