Steel building
Clear span steel buildings tend to be less cost efficient than structures with interior columns.However, other practical considerations may influence the selection of framing style such as an occupancy where interior structural obstructions are undesirable (e.g. aircraft hangars or sport arenas).They use prefabricated metal frames combined with conventional joists to provide larger openings and clearances in buildings.Uniports, originating in the UK in 1965 after being pioneered by Alfred Booth & Co in 1948, have been widely deployed worldwide, including in Arctic Canada, the African jungle, and the Kuwait desert.Prefabrication offers the benefits of being less costly than traditional methods and is more environmentally friendly (since no waste is produced on-site).[7] The larger steel buildings require skilled construction workers, such as ironworkers, to ensure proper and safe assembly.