Destruction of buildings and other kind of buildings
Terracing work: digging, grading of construction sites, opening of trenches, removal of rocks, destruction with explosives, etc.
Ground-water lowering and dredging of construction sites
Removal on construction sites
Installation in buildings or in other projects of building of: pumbling systems and hygiene appliances, pipes for gas and water (except for heating), setting of automatic extinguishers, etc.
Masonry
Making of repointing works
Development of residential building projects
Construction of residential buildings
Construction of office buildings
Construction of other types of non-residential buildings
Construction of sewerage systems
Electro-technical installation works at buildings
Electro-technical installation works, with the exception of those executed at buildings