Structural · S-2A36S

BRBF Column Base Plate

Materials

Concrete Steel Masonry / CMU

Elements

Columns Floors / Slabs Foundations / Footings Anchors / Embeds Connections / Plates

Connections

Braced Frame Connection Base Plate / Anchorage Welded Connection Bolted Connection Rebar Splice / Development

About this detail

A wide-flange column connects to a heavy base plate bearing on non-shrink grout over a concrete footing or pier. ASTM F1554 Grade 105 threaded anchor rods with jam nuts extend down to an embedded anchorage plate near the bottom of the footing, with three number 3 top and bottom ties reinforcing the anchor bolt group. A non-shrink grout pocket surrounds the lower anchor assembly with number 5 bars at twelve inches on center each way, providing a three-inch minimum concrete cover to all steel surfaces. Complete joint penetration welds connect the column flanges and web to the base plate, and nuts are tack welded to the rods typically. Leveling nuts or shims are provided per specifications, with leveling plates explicitly prohibited.

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