Structural · S-TT6M5

Typical Base Plate At Brace Frame Column

Materials

Steel

Elements

Columns Bracing Anchors / Embeds Connections / Plates Reinforcing

Connections

Gusset Plate Base Plate / Anchorage Bracing Connection Welded Connection Bolted Connection

About this detail

A structural steel frame column base plate connection incorporates a buckling-restrained brace gusset. The assembly consists of a two-and-one-quarter-inch-thick, 50 ksi base plate welded to the column flanges with complete-joint-penetration double-bevel welds, supported by a shear lug sized at two-and-one-quarter by eight-and-one-half inches by two feet eight inches. Anchor bolts are ASTM F1554 Grade 105 measuring one-and-one-quarter inches in diameter set in one-and-seven-eighths-inch-diameter holes with three-inch square by one-inch thick plate washers. Additional anchor bolts are provided as required to maintain maximum bolt spacing based on the required gusset length. The concrete footing includes sixteen total number seven hairpins arranged with four bars equally spaced on each side.

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