Structural · S-8MCSD

Buckling-Restrained Brace Base Plate and Gusset Connection

Materials

Concrete Reinforced Concrete Steel Masonry / CMU

Elements

Columns Floors / Slabs Foundations / Footings Arches Bracing Anchors / Embeds Connections / Plates Reinforcing

Connections

Gusset Plate Base Plate / Anchorage Bracing Connection Bolted Connection Rebar Splice / Development

About this detail

A structural steel column and buckling-restrained brace connect to a reinforced concrete footing using a two-inch thick base plate and a central shear lug. Twelve one-and-three-quarter-inch diameter high-strength anchor bolts secure the base plate over two and a half inches of maximum non-shrink grout. Transverse stiffener plates matching the column flange thickness are welded to the base plate between the anchor bolts with partial-joint-penetration welds and five-sixteenth-inch fillet welds. Gusset plates for the buckling-restrained braces attach above the base plate, flanked by one-inch asphalt boards on each side. A two-inch diameter grout hole is located four inches from the column center line in each direction, and three-quarter-inch by four-inch by zero-foot-four-inch plates are positioned at each anchor.

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