CPV: 45000000 Construction work, 45111250 Ground investigation work, 45112000 Excavating and earthmoving work, 45112450 Excavation work at archaeological sites, 45112500 Earthmoving work, 45220000 Engineering works and construction works, 45221250 Underground work other than tunnels, shafts and subways, 45230000 Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork, 45231110 Pipelaying construction work, 45232431 Wastewater pumping station, 45231300 Construction work for water and sewage pipelines, 45232150 Works related to water-distribution pipelines, 45232320 Cable broadcasting lines, 45233223 Carriageway resurfacing works, 45240000 Construction work for water projects, 45244000 Marine construction works, 45247270 Reservoir construction works, 45251000 Construction works for power plants and heating plants, 45251100 Construction work for power plant, 45252100 Sewage-treatment plant construction work, 45252126 Drinking-water treatment plant construction work, 45255110 Wells construction work, 45259000 Repair and maintenance of plant, 45259200 Purification-plant repair and maintenance work, 45262522 Masonry work, 45300000 Building installation work, 45310000 Electrical installation work, 45313000 Lift and escalator installation work, 45317200 Electrical installation work of transformers, 45421140 Installation of metal joinery except doors and windows, 45454000 Restructuring work, 45454100 Restoration work