Structural · S-VSBK5

Heavy Steel Column Base Plate Connection

Materials

Concrete Steel Masonry / CMU

Elements

Columns Anchors / Embeds Connections / Plates

Connections

Base Plate / Anchorage Welded Connection Bolted Connection Embed Plate

About this detail

A wide-flange steel column welds to a 3/4-inch-thick by 24-inch-wide by 2-foot-long embed plate centered on the column. Complete joint penetration groove welds attach the column flanges, and 5/16-inch fillet welds attach the column web according to AWS D1.8 structural welding code for seismic applications. Eight 1-1/4-inch-diameter ASTM F1554 Grade 105 anchor rods secure the base plate using 1/2-inch by 3-inch square plate washers, supplemented by two 3/4-inch-diameter ASTM F1554 Grade 36 anchor rods with 3/8-inch by 3-inch square plate washers. A center bar runs between the anchor rods, and twenty-five #8 reinforcing bars spaced at 6 inches on center each way reinforce the embedded concrete. Anchor bolt nuts are tightened after plate washers are welded, and grout access holes are provided as required.

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