Structural · S-P5CYD

Steel Beam to Column SFRS Collector Connection

Materials

Concrete Steel Metal (misc.)

Elements

Roofs Decks Connections / Plates

Connections

Welded Connection Bolted Connection Deck Attachment

About this detail

A steel beam frames into a steel column with a special seismic force resisting system (SFRS) collector connection. The steel beam web connects to the column via a shear plate secured by 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 of an inch, welded to the beam web on three sides with a five-sixteenths-inch fillet weld. A steel beam cap plate sized to the greater beam flange thickness plus one-eighth of an inch at fifty ksi is welded to the top of the column with a complete joint penetration weld. A standard weld access hole is provided at the beam web, and the column flange features a three-eighths-to-five-sixteenths-inch bevel. Concrete over metal floor or roof deck bears above the steel framing members.

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