Statistical Classification of Economic Activities NACE Rev. 2.1

This class includes the installation of equipment other than electrical, plumbing, heating and air-conditioning systems or industrial machinery in buildings and civil engineering structures.

This class includes:
- installation in buildings or other construction projects of:
elevators, escalators, including repair and maintenance
automated and revolving doors
lightning conductors
vacuum cleaning systems
thermal, sound or vibration insulation

This class excludes:
- installation of industrial machinery, see 33.20

This class includes:
- cleaning of new buildings after construction
- other building completion and finishing work n.e.c.

This class excludes:
- activities of interior decoration designers, see 74.10
- general interior cleaning of buildings and other structures, see 81.21
- specialised interior and exterior cleaning of buildings, see 81.22

This class includes:
- construction activities specialising in one aspect common to different kind of structures, requiring specialised skill or equipment:
construction of foundations, including pile driving
damp proofing and water proofing works
de-humidification of buildings
shaft sinking
erection of steel elements
steel bending
bricklaying and stone setting
scaffolds and work platform erecting and dismantling, excluding rental of scaffolds and work platforms
erection of chimneys and industrial ovens
work with specialist access requirements necessitating climbing skills and the use of related equipment, e.g. working at height on tall structures
- subsurface work
- construction of outdoor swimming pools
- steam cleaning, sand blasting and similar activities for building exteriors
- rental of cranes and other building equipment, which cannot be allocated to a specific construction type, with operator

This class excludes:
- rental of construction machinery and equipment without operator, see 77.32