This assembly consists of a metal landing platform filled with concrete, as specified by CSI division 033000, supported by a metal stair structure per CSI division 055113. The guardrail system is centered on the support post, maintaining a typical handrail height of 3 feet 0 inches and a total guard height of 3 feet 6 inches. The stair treads are spaced at 11 inches typical with a 1 inch typical nosing overlap. The guard support post is positioned 1 1/2 inches from the edge of the landing platform, with the landing slab thickness measuring 3 inches.
LEADING EDGE OF TYP STAIR TREAD 033000 CONCRETE FILL IN 055113 - METAL LANDING PLATFORM CENTERLINE OF GUARD SUPPORT 4" 3" 3" 3' - 0" HANDRAIL (TYP) 3' - 6" GUARD (TYP) 11" TREAD (TYP) 1" TYP 1 1/2"
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