Steel stair construction features 13-gauge pre-galvanized small hole plank grating with traction tread supported by painted closed steel risers and stair stringers. A welded header connects to the landing flooring assembly with a three-and-a-half-inch clearance dimension. Full penetration welds are ground smooth. Dimensions indicate a seven-inch maximum rise and a one-foot run.
FULL PEN. GRIND SMOOTH CLOSED STEEL RISER PAINTED, TYP STRINGER - PAINTED WELDED HEADER - PAINTED McNICHOLS: 13GA PRE-GALVANIZED "SMALL HOLE PLANK GRATING - TRACTION TREAD" McNICHOLS: 13GA PRE-GALVANIZED "SMALL HOLE PLANK GRATING - TRACTION TREAD" FLOORING AT LANDING 3 1/2" MAX. 7" 1' - 0" 1" STAMP # 11/16/2022 12/08/2022
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