Two structural steel beams frame into opposing sides of a hollow structural section column using bolted flange plates and welded web connections. The top and bottom beam flanges connect to three-eighths by six-inch plates typically running across the column face. Each flange connection uses two three-quarters-inch diameter machine bolts on a three-inch gauge typically set one and one-half inches from the edge. The beam webs attach to the column with one-quarter-inch fillet welds featuring field weld symbols typically. This configuration provides a rigid moment frame joint in structural steel construction.
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