This stair section details a steel stair assembly connecting a loading level at elevation 85'-0" to a platform at elevation 89'-0". The assembly features steel treads and risers configured with seven equal risers spaced at approximately 6.85 inches each over a four-foot vertical rise. A three-foot-six-inch high metal guardrail and a three-foot high metal handrail are mounted along the stair run.
P0 89' - 0" Loading 85' - 0" 7 E Q R I S E R S @ + / - 6 . 8 5 " E A 4 ' - 0 " 3'-0" H METAL HANDRAIL 3'-6" H METAL GUARDRAIL H A N D R A I L T Y P . 3 ' - 0 " G U A R D R A I L T Y P . 3 ' - 6 " STEEL TREAD AND RISER
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