23 Construction

237110 Water and Sewer Line and Related Structures Construction

This industry comprises establishments primarily engaged in the construction of water and sewer lines, mains, pumping stations, treatment plants, and storage tanks. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to water, sewer line, and related structures construction. All structures (including buildings) that are integral parts of water and sewer networks (e.g., storage tanks, pumping stations, water treatment plants, and sewage treatment plants) are included in this industry.

Illustrative Examples:

Distribution line, sewer and water, construction
Sewer main, pipe and connection, construction
Fire hydrant installation
Storm sewer construction
Irrigation systems construction
Water main and line construction
Sewage disposal plant construction
Pumping station, water and sewage system, construction
Water system storage tank and tower construction
Reservoir construction
Water treatment plant construction
Water well drilling, digging, boring, or sinking (except water intake wells in oil and gas fields)

Establishments primarily engaged in constructing marine facilities (e.g., ports), flood control structures, dams, or hydroelectric power generation facilities are classified in Industry 237990, Other Heavy and Civil Engineering Construction.

237120 Oil and Gas Pipeline and Related Structures Construction

This industry comprises establishments primarily engaged in the construction of oil and gas lines, mains, refineries, and storage tanks. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to oil and gas pipeline and related structures construction. All structures (including buildings) that are integral parts of oil and gas networks (e.g., storage tanks, pumping stations, and refineries) are included in this industry.

Illustrative Examples:

Distribution line, gas and oil, construction
Oil refinery construction
Gas main construction
Petrochemical plant construction
Gathering line, gas and oil field, construction
Pumping station, gas and oil transmission, construction
Natural gas pipeline construction
Storage tank, natural gas or oil, tank farm or field, construction
Natural gas processing plant construction

Building chemical plants (except petrochemical) and similar process or batch facilities are classified in Industry 236210, Industrial Building Construction;

Oil well rig building, repairing, and dismantling, on a contract basis are classified in U.S. Industry 213112, Support Activities for Oil and Gas Operations;

Inspecting pipelines are classified in Industry 541990, All Other Professional, Scientific, and Technical Services.

Mining machinery and equipment repair and maintenance are classified in Industry 811310, Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance.

237130 Power and Communication Line and Related Structures Construction

This industry comprises establishments primarily engaged in the construction of power lines and towers, power plants, and radio, television, and telecommunications transmitting/receiving towers. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to power and communication line and related structures construction. All structures (including buildings) that are integral parts of power and communication networks (e.g., transmitting towers, substations, and power plants) are included.

Illustrative Examples:

Alternative energy (e.g., geothermal, ocean wave, solar, wind) structure construction
Power line stringing
Cellular phone tower construction
Radio transmitting tower construction
Co-generation plant construction
Satellite receiving station construction
Communication tower construction
Nuclear power plant construction
Telephone line stringing
Electric light and power plant (except hydroelectric) construction
Transformer station and substation, electric power, construction
Electric power transmission line and tower construction
Underground cable (e.g., cable television, electricity, telephone) laying

Constructing hydroelectric generating facilities are classified in Industry 237990, Other Heavy and Civil Engineering Construction;

Constructing broadcast studios and similar nonresidential buildings are classified in Industry 236220, Commercial and Institutional Building Construction;

Performing electrical work within buildings are classified in Industry 238210, Electrical Contractors and Other Wiring Installation Contractors;

Line slashing or cutting (except maintenance) are classified in Industry 238910, Site Preparation Contractors;

Installing and maintaining communication transmission lines performed by telecommunications companies are classified in Subsector 517, Telecommunications;

Locating underground utility lines prior to digging are classified in Industry 561990, All Other Support Services.

Tree and brush trimming for overhead utility lines are classified in Industry 561730, Landscaping Services.