Structural · S-CY8YZ

Steel Beam to Column Cap Plate and Shear Tab Connection

Materials

Steel

Elements

Beams Roofs

Connections

Welded Connection Bolted Connection

About this detail

A steel beam frames into a steel column with a cap plate and shear plate connection at a floor or roof level. The steel beam web attaches to the shear plate using three seven-eighths-inch diameter erection bolts, reduced to two bolts for W8 or W10 shapes. The shear plate thickness equals the beam web thickness plus one-eighth inch. The steel column cap plate and stiffener plates are sized to the greater beam flange thickness plus one-eighth inch using 50 KSI steel. Complete joint penetration welds secure the beam flange to the cap plate, while five-sixteenth-inch fillet welds attach the shear plate to the beam web and the stiffener plates to the column web. Bevel welds of five-sixteenth and three-eighth inch size tie the column flange to the assembly as indicated.

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