Hardrock concrete fills the metal pan stair treads and landing frame, with a maximum seven-inch riser height and an eleven-inch minimum tread depth. A solid and continuous two-inch stripe insert is embedded in each tread of each run at interior stairs, extending the full length of the step and aligning with the edge of the riser. The metal pan treads tie into channel stringers, while the landing framing consists of a channel frame supported per structural drawings. The stair assembly abuts a concrete wall or rated metal stud wall with a one-inch clearance.
HARDROCK CONCRETE IN METAL PAN PROVIDE SOLID AND CONTINUOUS 2" STRIPE INSERT, EMBEDDED IN EACH TREAD OF EACH RUN AT INTERIOR STAIRS, EXTENDING THE FULL LENGTH OF THE STEP, ALIGNING W/ EDGE OF RISER METAL PAN 'C" CHANNEL FRAME AT LANDING SEE STRUCTURAL CONC. WALL OR RATED METAL STUD WALL "C" CHANNEL STRINGER- SEE STRUCTURAL HARDROCK CONC. IN METAL PAN 1" A710 05 MAX. 7" MIN. 11"
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