71.12.Z - Engineering activities and related technical consultancy
42.11.Z - Works related to construction of roads and motorways
42.12.Z - Works related to construction of railways and underground railways
42.13.Z - Works related to construction of bridges and tunnels
42.21.Z - Works related to construction of transmission pipelines and distribution networks
42.22.Z - Works related to construction of telecommunications and electricity lines
42.91.Z - Works related to construction of water projects
42.99.Z - Works related to construction of other civil engineering projects not elsewhere classified
43.11.Z - Demolition
43.12.Z - Site preparation
43.13.Z - Test drilling and boring
43.22.Z - Plumbing, heat and air-conditioning installation
43.29.Z - Other construction installation
74.10.Z - Specialised design activities
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
