Structural · S-5DSW4

Typical Joist and Girder Connection

Materials

Steel Metal (misc.)

Elements

Columns Beams Roofs Decks Connections / Plates

Connections

Welded Connection Bolted Connection

About this detail

A steel open web joist and girder connection bears onto a wide-flange steel column. The steel joist bearing end is secured with two ASTM A325 erection bolts, sized one-half inch in diameter for K-series joists or three-quarters inch in diameter for long-span LH-series joists. A three-eighths-inch by six-inch by six-inch stabilizer plate with a thirteen-sixteenths-inch diameter hole is welded to the column to receive the bottom chord, while bottom chords are left unwelded to the stabilizer plate unless noted otherwise. Erection bolts are required for all joists spanning forty feet or more and for any joists and girders framing directly into columns. A steel cap plate is provided at the column top, and beam web stiffener plates or connection plates are added to each side of the supporting steel beam as specified.

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