A steel pan and riser stair system with a two-inch concrete infill at the tread pans. The assembly is supported by an HSS12x2x1/4 steel tube stringer, painted where exposed unless noted otherwise. A 2x2-inch steel angle welded to the stringer carries the tread assembly. Welds are specified at all seams and to angle clips at each stringer. Exposed underside surfaces are painted, and treads feature a scheduled finish with a two-inch contrast strip at the nosing.
3 1/2" SCHEDULED FINISH W/ 2" CONTRAST STRIP AT NOSING, TYP 2" CONCRETE INFILL @ TREAD PANS, TYP STEEL PAN & RISER STAIR SYSTEM. WELD @ SEAMS & TO ANGLE CLIPS @ EA. STRINGER. PAINT BOTTOMS IF EXPOSED HSS12X2X1/4 STEEL TUBE PAINTED WHERE EXPOSED, UNO L2" x 2" STEEL ANGLE PAINTED WHERE EXPOSED C1 A532
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