Structural · S-KQ54C

Typical Steel Beam Stiffener Plate Details

Materials

Steel

Elements

Columns Connections / Plates

Connections

Welded Connection

About this detail

Stiffener plate configurations for steel framing members carrying concentrated loads feature full-height or partial-height stiffener plates welded to both sides of the member web matching the member dimensions and flange widths. Fillet welds are sized per AISC standards, with specific top or bottom flange welding required depending on whether the load is applied to the top flange or bottom flange as a hanger. Maximum beam k-distances per AISC guidelines govern the placement and fit of the plates. General notes mandate full-height stiffeners unless otherwise detailed and require minimum fillet welds per AISC table J2.4.

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