1.
Excavation
2.
Earthworks
3.
Construction
4.
Assembly and disassembly of prefabricated elements
5.
Conversion or fitting-out
6.
Alterations
7.
Renovation
8.
Repairs
9.
Dismantling
10.
Demolition
11.
Upkeep
12.
Maintenance — Painting and cleaning work
13.
Drainage