43909

Other Specialized Construction, Not Elsewhere Classified

This group encompasses other specialized construction activities that have not been classified in groups 43901 to 43905 and require specific skills or equipment. This includes activities such as moisture and waterproofing work, building dehumidification, shaft sinking, installation of smokestacks and ovens for industrial purposes, and work that requires climbing skills and related equipment, such as working on tall buildings. It also includes work below ground level, concrete pavement work, asphalt pavement work, granular pavement work, pressured cement drilling and injection work, structural concrete work, post-tensioned concrete construction work, waterproofing work for water, oil, gas storage tanks, and similar structures, as well as the installation of fire-resistant constructions (furnaces, annealing, flares, incinerators) for residential and non-residential buildings and other civil engineering structures.