Ironworker standing on scissor lift work platform tightens bolts with electric impact wrench that connect horizontal wide flange beam to vertical wide flange column. This connecting phase of structural steel construction, which follows the erection phase, consists of plumbing up the frame and installing permanent bolts/welds to complete the structural design and detailing connections. Ashley Terrace, Ann Arbor, Michigan April, 2007.
Constructioncranestructuralsteelerectironworkercolumnwide flangebuildingbeamimpact wrenchboltconnectionsstructureAshley TerraceAnn ArborMichiganApril2007steel connecting 5673
From Steel Construction: erect, connect, bolt, weld, crane, fall protection, pipe, ironworker,