Concrete-filled stair tread and riser pans are supported by stair stringers with a tread ledger and an end closure at the base. The stair assembly anchors to a concrete floor slab via floor anchors. Treads feature a one-inch nosing, a one-and-a-half-inch dimension typically, and a one-eighth-inch typical slope. Risers have a maximum height of seven inches with typical one-half-inch corner radii. A handrail mounts to the stair assembly with additional information referenced on another sheet.
END CLOSURE FLOOR ANCHOR TREAD LEDGER CONCRETE FILLED TREAD STAIR STRINGER STAIR TREAD & RISER PAN SEE SHEET A7.12 FOR ADDITIONAL HANDRAIL INFO. TREAD 1' - 0" 1" NOSING TREAD 1-1/2", TYP TYP. RISER 7" MAX. 1/8" SLOPE TYP. R= 1/2" TYP.
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