| 500 |
Construction and
maintenance of buildings |
| 500.1 |
Construction of
residential buildings including additions and alterations in the existing ones |
| 500.2 |
Construction of
non-residential buildings including additions and alterations in the existing ones |
| 500.3 |
Establishments
engaged in repair and maintenance of buildings |
| 501 |
Construction and
maintenance of roads, railbeds, bridges, tunnels, pipelines, ropeways, ports, harbours and
runways etc. |
| 502 |
Construction/erection
and maintenance of power, telecommunication and transmission lines |
| 503 |
Construction and
maintenance of waterways and water reservoirs such as bunds, embankments, dams, canals,
tanks, wells, tubewells and aquaducts etc. |
| 504 |
Construction and
maintenance of hydro-electric projects. |
| 505 |
Construction and
maintenance of power plants except hydro-electric projects |
| 506 |
Construction and
maintenance of industrial plants excluding power plants |
| 509 |
Construction and
maintenance not elsewhere classified |
| 510 |
Plumbing and
drainage |
| 511 |
Heating and
air-conditioning installation, lift installation, sound-proofing etc. |
| 512 |
Setting of tiles,
marble, bricks, glass and stonel |
| 513 |
Timber works (such
as fixing of doors, windows, panels); structural steel work; R.C.C. work and binding of
the bars and roof trusses |
| 513.1 |
Timber work such as
fixing of doors, windows and panels etc. |
| 513.2 |
Structural steel
work, R.C.C. work and binding of bars and roof trusses. |
| 514 |
Electrical
installation work for constructions |
| 515 |
Painting and
decorating work for constructions |
| 519 |
Other activities
allied to construction not elsewhere classified |