EMCOR Group - - Responsibilities: Locates and marks reference points for columns or plates on foundation, sing master straight edge, squares, transit and measuring tape and applying knowledge of geometry.; Attaches rigging or signals crane operator to lift components to specified position.; Aligns structures or plates sections to assemble boiler frame, tanks or vats sing plumb bobs, levels, wedges, dogs or turnbuckles.; Hammers, flame-cuts, files and/or grind irregular edges of sections or structural parts to facilitate fitting edges together.; Bolts or arc-welds structures and sections together.