Structural · S-6JGGX

Steel Beam-to-Column Moment Connection with Continuity Plates

Materials

Steel

Elements

Columns Beams Connections / Plates

Connections

Moment Connection Welded Connection

About this detail

A rigid moment connection between a wide-flange frame beam and a frame column incorporates top and bottom continuity plates welded to both sides of the column. The continuity plates are aligned with the column flanges and sized with a thickness equal to the beam flange thickness, with a three-quarter-inch minimum. Complete joint penetration groove welds attach the continuity plates to the column flanges, leaving the backing in place with a five-sixteenth-inch fillet weld added underneath. The beam flanges connect to the column via complete joint penetration welds, while the beam web is bolted with a vertical row of fasteners. A double plate is provided on the exterior column face where required per the buckling-restrained braced frame manufacturer. Additional notes mandate specific fillet weld sizes, compliance with AISC design dimensions for 'k' and 'k1', and prohibition of weld tabs adjacent to the column web and flange juncture.

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