Concrete-filled steel pan treads with a slip-resistant finish are supported by slanted steel risers welded directly to the tread pans. The assembly is framed by a painted channel stringer tied to a landing structural support, with member and connection sizes referenced to the structural drawings. Riser heights range from 4.9 to 7 inches with a 1-inch radius nosing, incorporating a required radius or bevel between 6 millimeters and 10 millimeters in the horizontal dimension on all riser nosings as per code.
LANDING STRUCTURAL SUPPORT - REFER TO STRUCTURAL CONCRETE FILLED STEEL PAN TREAD w/ SLIP-RESISTANT FINISH CHANNEL STRINGER -PAINTED - REFER TO STRUCTURAL 4.9 to 7" 125 to 180mm REFER TO STRUCTURAL STRINGER SLANTED STEEL RISER WELDED TO TREAD PAN. REFER TO PLAN TREAD LENGTH 1'-0" 1" RADIUS NOSING -PROVIDE A RADIUS OR A BEVEL BETWEEN 6 mm AND 10 mm - IN HORIZONTAL DIMENSION - ON ALL RISER NOSINGS AS PER 3.4.6.8.(8)(a)
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