Structural · S-SA2Q7

Wide Flange and Tube Column Base Plate Details

Materials

Concrete Steel Masonry / CMU

Elements

Columns Beams Anchors / Embeds

Connections

Welded Connection Bolted Connection Embed Plate

About this detail

Base plate configurations for both wide flange and tube or pipe columns bear on concrete foundations. The wide flange column base plate, designated Type W3, connects via five-sixteenths inch fillet welds on the web and flanges while omitting k. The tube or pipe column base plate, designated Type T3, utilizes a one-quarter inch fillet weld along the face of flats at the tube. Both assemblies sit atop a two inch layer of non-shrink grout and feature anchor rods with a nine inch minimum embedment depth and three inch typical hook embedment. Edge distances and plate dimensions are defined by formulas where G equals the workable gage of the supporting beam per the American Institute of Steel Construction manual and D equals the column width plus one inch or G plus three inches, whichever is greatest.

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