Hardrock concrete fills metal pan treads supported by a one-inch channel stringer, maintaining a minimum eleven-inch tread depth and a maximum seven-inch riser height. The metal pan stair assembly lands on a channel frame. Stair shop drawings are required for fabrication and installation.
'C' CHANNEL FRAME AT LANDING PROVIDE STAIR SHOP DRAWINGS 1" 'C' CHANNEL STRINGER PROVIDE STAIR SHOP DRAWINGS HARDROCK CONCRETE OVER METAL PAN 2" A710 05 1" 11" MIN. 7" MAX HARDROCK CONCRETE IN METAL PAN
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