Tekkotsutobi is a workman who operates a crane to hoist and assemble (also called 'takekata' or 'tatekomi') steel members such as columns and beams manufactured in iron factories to construct steel buildings.
鉄骨構造の建築物において、鉄工所などで製作された柱や梁になる鋼材をクレーンなどで吊り上げて組み立てる(建て方・建て込みとも呼ばれる)鳶。