An exterior concrete stair assembly featuring seven equal risers of forty-eight inches total height and six treads at eleven inches. A one-and-a-half-inch diameter standard pipe railing and guardrail system provides fall protection along the stair run. Vertical pickets or intermediate rails maintain a maximum four-inch spacing on center. Dimensions note a forty-two-inch guardrail height and thirty-six-inch handrail height relative to the stair run.
A2 AD.4 7 EQUAL RISERS 48" 60" 42" 24" 1' - 0" MAX., TYP. 4" O.C. 18" 18" 36" 1-1/2" DIA STD. PIPE RAILING, TYP. GUARDRAIL, SEE DETAIL AD.4 C3 EDGE OF BUILDING 6 TREADS @ 11" 66" AD.4 B3
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