| | | | 23621 | Industrial Building
Construction | Nonresidential Building
Construction 2362 | | | | Construction of Buildings 236 |
| | | | 23622 | Commercial and
Institutional Building
Construction | Nonresidential Building
Construction 2362 | | | | Construction of Buildings 236 |
| | | | 23711 | Water and Sewer Line and
Related Structures
Construction | Utility System
Construction 2371 | | | | Heavy and Civil
Engineering Construction 237 |
| | | | 23712 | Oil and Gas Pipeline and
Related Structures
Construction | Utility System
Construction 2371 | | | | Heavy and Civil
Engineering Construction 237 |
| | | | 23713 | Power and Communication
Line and Related
Structures Construction | Utility System
Construction 2371 | | | | Heavy and Civil
Engineering Construction 237 |
| | | | 23721 | Land Subdivision | Land Subdivision 2372 | | | | Heavy and Civil
Engineering Construction 237 |
| | | | 23731 | Highway, Street, and
Bridge Construction | Highway, Street, and
Bridge Construction 2373 | | | | Heavy and Civil
Engineering Construction 237 |
| | | | 23799 | Other Heavy and Civil
Engineering Construction | Other Heavy and Civil
Engineering Construction 2379 | | | | Heavy and Civil
Engineering Construction 237 |
| | | | 23811 | Poured Concrete
Foundation and Structure
Contractors | Foundation, Structure,
and Building Exterior
Contractors 2381 | | | | Specialty Trade
Contractors 238 |
| | | | 23812 | Structural Steel and
Precast Concrete
Contractors | Foundation, Structure,
and Building Exterior
Contractors 2381 | | | | Specialty Trade
Contractors 238 |
