Structural · S-YDT4J

Bracing Connections at Moment Frame Beams and Columns

Materials

Steel

Elements

Columns Beams Bracing Connections / Plates

Connections

Shear Tab / Single Plate Gusset Plate Bolted Connection

About this detail

These structural details illustrate heavy steel moment frame bracing and beam-to-column connections. The first detail shows a bracing connection at a moment frame beam utilizing a five-eighths-inch thick gusset plate and shear tab welded with three-eighths-inch fillet welds on three sides, connecting an incoming beam with two seven-eighths-inch diameter A325-PT bolts in standard holes. Vertical slotted holes may be used in the shear tab plate at the contractor's option, with beam flanges coped as required. The second detail shows a bracing connection at a moment frame column with a half-inch thick column continuity plate, a three-quarter-inch thick plate, and a one-inch diameter A490-PT bolt connecting the beam gusset plate and stiffener plate. The third detail shows a moment frame beam connection with a wide-flange beam, seven-eighths-inch diameter A325 bolts in four rows, and half-inch stiffener plates on each side, increasing to five-eighths-inch plates where the beam weight exceeds 135 pounds per foot.

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