A typical stair connection ties a steel plate stringer into a concrete slab at the basement level. Poured concrete treads sit inside sheet metal bent plate risers and pans. The bottom of the stair stringer is bolted directly to the structural slab using a tab welded to the interior of the stringer plate.
BASEMENT T.O.S. 413' - 7 3/4" 1 1/2" 7" MAX 1/4" / 1'-0" POURED CONCRETE TREAD SHEET METAL BENT PLATE RISER AND PAN. SEE STRUC. STEEL PLATE STRINGER. SEE STRUC. F1 BOTTOM OF STRINGER BOLTED TO SLAB WITH TAB WELDED TO INTERIOR OF STRINGER PLATE
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