Installation of secondary power supply systems (electrical generators)
Building of highways, roads, streets, pavements and other roads for vehicles and pedestrians (including the setting of guard rails)
Paint markings of roads and parking areas
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
Setting of electric cables and appliances
Setting of telecommunication systems and computer installations
Setting of monitoring systems and alarms against housebreakings
Setting of lighting and signalling systems for roads, railroads, port and airport installations (including the setting of notice boards)
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)
Setting of electrical installations of 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
Installation of blinds and florentine blinds
Installation of signs, lighted or not
Other work of n.e.s. installation, including accessories installation
Work of general installation
Making of repointing works
Assembling and disassembling of scaffoldings and work platforms
Cutting of trees and hedges
Design and maintenance of gardens, parks and green places for sport facilities
Maintenance and repair of computers and peripherical computer equipment
Repair of audio and video appliances
Repair of household appliances
Installation of industrial machines, devices and equipment
Construction of residential buildings
Construction of high roads and other types of roads
Insulation works
Other types of building installations
Other types of works with regard to the completion of buildings
Cleaning of frontages
Holdings
Maintenance of the landscape
Electro-technical installation works, with the exception of those executed at buildings
Plumbing works
Installation of heating, air-conditioning and ventilation