Structural · S-4DFXC

Typical Special Frame Collector Beam to Column Connection

Materials

Concrete Steel Glass / Glazing Metal (misc.)

Elements

Beams Roofs Decks Connections / Plates

Connections

Welded Connection Bolted Connection

About this detail

A steel beam connects to a steel column supporting a concrete floor or roof slab over metal deck. The connection features a shear plate attached to the beam web 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 with five-sixteenths-inch fillet welds on three sides. Horizontal stiffener plates match the greater beam flange thickness plus one-eighth inch and are fabricated from fifty ksi steel. The beam flanges connect to the stiffener plates with complete joint penetration welds, utilizing typical weld access holes. The stiffener plates are welded to the column web and flanges with five-sixteenths-inch fillet welds and partial joint penetration welds sized at one-half plate thickness plus one-sixteenth inch.

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