A galvanized steel metal plate or channel stringer supports metal pan steel treads or concrete-filled steel pan treads. The stair assembly features a one and a half inch outer diameter tube and pipe rail, designed to meet safety clearance standards where a four inch and four and three-eighths inch diameter sphere shall not pass through. The stair connection is bolted with a steel angle to the concrete slab below. The guardrail stands at three feet six inches high with a one foot zero inch minimum extension.
A2 1 1/2" DIA. O.D. TUBE 1 1/2" DIA. PIPE RAIL METAL PLATE OR CHANNEL STRINGER, GALVANIZED MIN. 1'-0" 3'-6" 3'-0" 1 1/2" METAL PAN STEEL TREADS OR CONC. FILLED STEEL PAN TREADS BOLT STAIR CONNECTION W/ STEEL ANGLE 4" DIA. SPHERE SHALL NOT PASS THROUGH 4 3/8" DIA. SPHERE SHALL NOT PASS THROUGH 27" MAX Ar < Ar
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