A large horizontal beam that carries the weight of smaller beams and transfers it to columns.
A large, primary horizontal structural member that supports beams, joists, or other secondary members. Girders span between columns or walls and carry the accumulated loads from the framing they support. In steel construction, girders are typically wide-flange sections or plate girders fabricated for long spans.
A 60-foot-span plate girder carries the floor framing across the main lobby without intermediate columns.
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