Building of conveyance, distribution and water disposal networks
Terracing work: digging, grading of construction sites, opening of trenches, removal of rocks, destruction with explosives, etc.
Removal on construction sites
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
Other work of n.e.s. installation, including accessories installation
Making of repointing works
Chimney sweeping and cleaning of hearths, ovens, incinerators, boilers, air ducts and smoke removal appliances
Repair of metal products
Plumbing works
Retail trade in sanitary products and sanitary installation materials in specialised shops
Maintenance of the landscape
Installation of heating, air-conditioning and ventilation