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.

422 - Structural and Related Work

Establishments primarily engaged in piledriving, form work, steel reinforcing, concrete pouring and finishing, precast concrete installation, rough and framing carpentry, structural steel erection and other structural and related work.

4221 - Piledriving Work

Establishments primarily engaged in piledriving and related work.

4222 - Form Work

Establishments primarily engaged in placing and stripping forms for poured-in-place concrete, including steel forms and false work.

4223 - Steel Reinforcing

Establishments primarily engaged in the setting of reinforcing rod, bar, mesh, cage, etc., to reinforce poured-in-place concrete.

4224 - Concrete Pouring and Finishing

Establishments primarily engaged in concrete pouring or placement and concrete finishing. Establishments primarily engaged in masonry block foundation work are classified in 4231 - Masonry Work, construction those primarily engaged in producing ready-mix concrete are classified in 3551 - Ready-Mix Concrete Industry and those primarily engaged in asphalt paving are classified in 4216 - Asphalt Paving, construction, or in 4121 - Highways, Streets and Bridges, construction. Establishments primarily engaged in building and/or installing residential swimming pools of all types are classified in 4293 - Residential Swimming Pool Installation.

4225 - Precast Concrete Installation

Establishments primarily engaged in the installation of precast and manufactured concrete panels and other concrete shapes.

4226 - Rough and Framing Carpentry

Establishments primarily engaged in structural wood framing and sheathing, installation of pre-fabricated wood roof trusses, exterior and interior wall components and other related carpentry work. Establishments primarily engaged in finish carpentry are classified in 4274 - Finish Carpentry, construction.

4227 - Structural Steel Erection

Establishments primarily engaged in structural and related steel erection from purchased fabricated metal parts. Establishments primarily engaged in fabricating heavy steel parts classified in 3029 - Other Fabricated Structural Metal Products Industries may erect such parts as a sec-ondary activity.

4229 - Other Structural and Related Work

Establishments primarily engaged in structural and related work not elsewhere classified.