A stair mid-landing features two-inch-thick concrete-filled steel-pan treads supported by painted two-by-twelve hollow structural section steel stringers below. The assembly includes two-by-two-inch stainless steel guardrails with one-and-a-half-inch diameter handrails mounted to them, alongside a separate one-and-a-half-inch diameter wall-mounted handrail. Fourteen-gauge sheet metal reinforcing for bracket mounting is indicated with dashed lines at the wall boundary. One-inch-wide contrasting photoluminescent nosing striping is applied across the treads.
2" THICK CONCRETE FILLED STEEL PAN TREADS. TYP. CONTRASTING PHOTOLUMINESCENT NOSING STRIP. TYP. PAINTED 2"X12" HSS STEEL STRINGER BELOW. TYP. 1 1/2" DIA. HAND RAIL MOUNTED TO GUARD RAIL 2" X 2" SS GUARD RAIL UP LANDING BOTTOM OF RISER SHOWN DASHED. TYP. TYP 11" TYP. 11" 1" WIDE PHOTOLUMINESCENT STRIPING TYP. 1 63/128" EQ EQ 1' - 11" 1' - 0" 14 GA. SHEET METAL REINFORCING FOR BRACKET MOUNTING SHOWN DASHED 1 1/2" DIA. WALL MOUNTED HANDRAIL 1 1/2" DIA. HAND RAIL MOUNTED TO GUARD RAIL 8" SEE PLAN SEE PLAN SEE PLAN UP SEE PLAN FOR WALL TYPE PAINTED 2"X12" HSS STEEL STRINGER BELOW. TYP.
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