Structural · A-H3XV9

Stair Landing Support Column Connection

Materials

Steel Metal (misc.)

Elements

Columns Beams Stairs Floors / Slabs Decks Bracing Connections / Plates Reinforcing

Connections

HSS Connection Bracing Connection Bolted Connection

About this detail

A stair landing framing connection utilizes an HSS 4x4x3/8 steel column supporting a channel beam or C12x20.7. The steel beam connects to the column via a 3/8-inch by 3-1/2-inch by 9-inch shear tab plate secured with three 3/4-inch diameter ASTM A325-N bolts, with 5/16-inch fillet welds joining the plate to the assembly. The column is capped with a 1/2-inch thick cap plate underneath the landing beam. Diagonal L3x3x1/4 angles are provided as required for bracing the intermediate stair landings, which bear on the floor below. Additional notes specify providing edge angles, metal deck, and slab reinforcing as required, as well as framing landing beams into the column with shear tabs and connecting the column web to each floor beam with 8-long clip angles (L8x4x7/16 each side of the column typical) when continuous columns are used.

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