From reinforced concrete towers to steel bridges it is hard not to observe the day-to-day work of an Ironworker. Ironworkers create the backbone of all large structures both concrete and steel. Reinforcing Ironworkers fabricate and place reinforcing steel and pre-stressing strands into concrete structures. Structural Ironworkers align, pin, bolt and weld structural steel members to create the framework from which other trades apply their craft. Ironworkers rig steel beams and bars while working with cranes to position these loads within the planned dimensions of a building. They coordinate their work to a blueprint and work to codes and standards to provide a building which is resilient and long-lasting.