Structural · S-JQ8XN

Typical Steel Beam to Column Collector Connection

Materials

Concrete Steel Metal (misc.)

Elements

Beams Roofs Decks Connections / Plates

Connections

Welded Connection Bolted Connection

About this detail

A typical seismic force-resisting system collector connection has steel beams framing into a steel column web. The assembly features a shear plate welded to the column web with a five-sixteenths-inch fillet weld and bolted to the steel beam web using three seven-eighths-inch diameter erection bolts, reduced to two bolts for W8 or W10 profiles. Plate thicknesses are sized such that the plate thickness equals the beam web thickness plus one-eighth of an inch, and dimension B equals half the plate thickness plus one-sixteenth of an inch. Fifty KSI stiffener plates are provided on each side of the column web, matching the greater beam flange thickness plus one-eighth of an inch, and are connected to the column web with five-sixteenths-inch fillet welds. Complete joint penetration welds connect the beam flanges to the stiffener plates, accompanied by standard weld access holes at the beam ends. Concrete over metal floor deck bears continuously across the top of the steel framing at the floor or roof level.

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