Structural · S-RGCBR

Typical Seismic Column Splice

Materials

Steel

Elements

Columns

Connections

Welded Connection Bolted Connection Rebar Splice / Development

About this detail

This seismic column splice detail connects upper and lower wide-flange steel columns sized per plan using complete joint penetration groove welds on the column flanges and webs, executed with ceramic backing plates under an approved PQR. The connection incorporates C-channel sections on each side—ranging from C6x10.5 for W8 columns up to C15x33.9 for W33 and W36 columns—fastened with three-quarter-inch diameter A325 bolts and two washers each, or alternatively welded with a five-sixteenth-inch fillet weld on three sides at the contractor's option. Shims are provided as required, and thirteenth-sixteenth-inch diameter holes are drilled in the column with fifteenth-sixteenth-inch diameter holes in the channel. The sequence requires welding the column flanges first, removing the channels, and then welding the column web.

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