Verify vertical and horizontal alignment of the structural steel
Connect columns, beams, and girders with bolts or by welding them into place
Use metal shears, torches, and welding equipment to cut, bend, and weld the steel
Iron and steel are important elements in buildings, bridges, and other structures. Even though the primary metal involved in this work is steel, these workers often are known as ironworkers or erectors. When building a tall structure, such as a skyscraper, ironworkers will arrange the steel frames, reinforcing bars, buckets of concrete, lumber, and other materials and equipment around the construction site. Once this job has been completed, workers begin to connect steel columns, beams, and girders according to blueprints and instructions from construction supervisors.
As they work, they use a variety of tools. They use rope (called a tag line) to guide the steel while it is being lifted; they use spud wrenches (long wrenches with a pointed handle) to put the steel in place; and they use driftpins or the handle of the spud wrench to line up the holes in the steel with the holes in the framework. To check the alignment, they may use plumb bobs, laser equipment, or levels.
Structural steel generally comes to the construction site ready to be put up, and cut to the proper size, with holes drilled for bolts and numbered for assembly. Some ironworkers make structural metal in fabricating shops, which are usually located away from the construction site.
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Ironworkers perform physically demanding and dangerous work. They usually work outside in all types of weather, and some must work at great heights. As a result, workers must wear safety devices, such as harnesses, to reduce the risk of falling. Nearly all ironworkers work full time. Those who work at great heights do not work during wet, icy, or extremely windy conditions.