Structural · S-5NW8X

BRB Top Joint Bolted Connection - Weak Axis

Materials

Concrete Steel Metal (misc.)

Elements

Columns Beams Decks Bracing Connections / Plates

Connections

Gusset Plate Bracing Connection Welded Connection Bolted Connection Deck Attachment Expansion / Slip Connection

About this detail

A buckling-restrained brace top joint connection occurs at a weak axis column frame. A continuous gusset plate extends full height through the beam depth, centered on the column and beam web, and is welded to the connection plate. The wide-flange beam incorporates Grade 50 top and bottom stiffener plates matching the beam width and column flanges, with the bottom stiffener secured using two 7/8-inch diameter A325 finger-tight bolts with upset threads in 2-inch long slotted holes. A shim plate aligns the beam web with the gusset plate and column centerline, backed by a connection drag plate and a doubler plate on the far side as specified in the schedule. Continuous plates matching the largest flange thickness are provided at the column, and stiffener plates extend beyond the brace connection per the buckling-restrained brace designer.

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