Poured-in-place concrete over steel pan treads supported by one and one-quarter inch by one and one-quarter inch by nine-foot tread support angles. The stair structure ties into a floor support beam or channel beneath a six-inch floor slab. A four-inch block-out is filled with concrete simultaneously with the stair tread pour.
11" POURED IN PLACE CONCRETE OVER STEEL PAN TREADS 4" 6" 1 1/4" x 1 1/4" x 9' TREAD SUPPORT ANGLES BLOCK OUT. FILL CONCRETE AT TIME OF TREAD POUR FLOOR SLAB 6" FLOOR SUPPORT BEAM/CHANNEL.
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