Poured-in-place concrete over steel pan treads or precast concrete treads are supported by steel channel or steel plate stringers. The treads rest on 1 1/4 inch by 1 1/4 inch by 0 foot 9 inch tread support angles attached to the stringers. Dimensions indicate clearances from the finish face of wall where stair stringers occur.
FINISH FACE OF WALL WHRE OCCURS STEEL CHANNEL OR STEEL PLATE STRINGER POURED IN PLACE CONCRETE OVER STEEL PAN TREADS OR PRECAST CONCRETE TREADS, SEE PLAN FOR TYPE 1 1/4"x1 1/4"x0'-9" TREAD SUPPORT ANGLES UP 0' - 0 1/2" MIN DN 0' - 0 1/2" MIN PER PLAN 4" MIN
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