Structural · A-FDDBV

Steel Stair Landing Support and Beam Connection Detail

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

An intermediate stair landing steel channel beam, specified as C12x20.7 or equal, bears onto a galvanized hollow structural section steel column measuring 4x4x3/8 inches through a one-half-inch thick cap plate. The steel beam connects to the support using a three-eighths by three-and-one-half by nine-inch shear tab secured with three three-quarter-inch diameter A-325 N bolts, welded with five-sixteenths-inch fillet welds. Diagonal angle braces measuring L3x3x1/4 provide lateral stability and are coped as required. Additional notes specify that stair landing support columns may be continuous, intermediate stair landings bear on the floor below, and edge angles, metal deck, and slab reinforcing are provided per typical requirements.

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