Terracing work: digging, grading of construction sites, opening of trenches, removal of rocks, destruction with explosives, etc.
Preparation of sites for mining: overburden removal and other work of planning and preparation for mining sites
Ground-water lowering and dredging of construction sites
Dredging of agricultural and silvicultural lands
Removal on construction sites
Test borings, test holes and corings for building and geophysical, geological and similar studies
Making of horizontal drillings for cables or pipes
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.
Installation in buildings or in other projects of building of: heating systems by electricity, gas and fuel, boilers, materials and pipes for ventilation and air conditioning, etc.
Installation in buildings or in other projects of building of: heating, cooling and ventilation systems (except heating)
Implementation in buildings or in other projects of building of: thermal insulation materials, acoustic and antivibrating insulation materials
Work of insulation of pipes for heating or cooling
Work of insulation of coolers or refrigerated warehouses
Work of general installation
Setting of antennas and lightning rods
Cleaning of new buildings and restoring after works
Other works of finishing in buildings n.e.s.
Cleaning with steam, sandblasting and similar activities used on the outside of buildings
Making of repointing works
Assembling of elements of metallic structures, not made by the unit making the works
Making of lifting works for third parties
Assembling and disassembling of scaffoldings and work platforms
Trade intermediaries for sanitary articles
Trade intermediaries for electric and electronic equipments, including installation equipments for industrial use
Trade intermediaries for machines and equipments used in tertiary sector
Repair of metal products
Plumbing works
Installation of heating, air-conditioning and ventilation
Intermediation of furniture, domestic products and ironwork
Intermediation of common goods
Wholesale in installation materials used by plumbers and for the installation of heating