The bottom connection of a steel stair stringer bears onto a concrete floor slab. The steel stringer supports concrete-filled steel pan treads and is anchored to the concrete slab at each stringer using an expansion bolt anchor. The connection design references structural drawings for specific sizing and reinforcement requirements.
EXPANSION BOLT ANCHOR @ EACH STRINGER CONCRETE FILLED STEEL PAN TREADS STEEL STRINGER RE: STRUCTURAL 1 1/2"
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