Structural · S-KCS9W

Steel Beam to Column SFRS Collector Connection

Materials

Concrete Steel Metal (misc.)

Elements

Beams Roofs Decks Connections / Plates

Connections

Welded Connection Bolted Connection Deck Attachment

About this detail

A structural steel beam frames into a steel column for a special force-resisting system collector connection beneath a concrete over metal floor or roof deck. The steel beam connects to the column web via a shear plate with 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, welded to the beam web and column web with five-sixteenth-inch fillet welds on three sides. A structural steel cap plate at the top of the column has a thickness equal to the greater beam flange thickness plus one-eighth inch using 50 KSI steel, joined to the beam flange with a complete joint penetration weld. Stiffener plates matching the cap plate thickness and material grade are welded to the column cap plate, column web, and column flange with five-sixteenth-inch and bevel welds. A typical weld access hole is provided at the beam web and flange intersection.

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