Structural · S-635MQ

Steel Beam to Column Collector Connection Detail

Materials

Concrete Steel Metal (misc.)

Elements

Roofs Decks

Connections

Welded Connection Bolted Connection Rebar Splice / Development

About this detail

Steel floor beams frame into a steel column with a cap plate and double-sided shear plates welded to the column flange. The cap plate is sized to the greater beam flange thickness plus one-eighth inch using fifty ksi steel, joined to the beam flange with a complete joint penetration weld and featuring typical weld access holes. Shear plates are sized to the beam web thickness plus one-eighth inch and secured with three seven-eighths-inch diameter erection bolts, reduced to two for W8 or W10 shapes. The shear plates are welded to the beam web on three sides with a five-sixteenth-inch fillet weld, while the column flange receives bevel welds measuring three-eighths by five-sixteenths of an inch. A concrete over metal floor deck bears above the assembly, and the connection serves as a seismic force-resisting system collector as indicated on plan.

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