42.11.Z - Works related to construction of roads and motorways
08.11.Z - Quarrying of ornamental and building stone, limestone, gypsum, chalk and slate
08.12.Z - Operation of gravel and sand pits; mining of clays and kaolin
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
43.21.Z - Electrical installation
46.73.Z - Wholesale of wood, construction materials and sanitary equipment
77.32.Z - Rental and leasing of construction machinery and equipment
81.29.Z - Other cleaning activities
81.30.Z - Landscape service activities