A cast-in-place concrete stair assembly transitions to a slab-on-grade over undisturbed soil. The stair run is reinforced with number four bars spaced at sixteen inches on center each way, featuring a number four nosing bar at each tread. A lap splice connects the stair reinforcement to the foundation footing, which contains two continuous number five bottom reinforcing bars. The concrete rests on a prepared sub-base over undisturbed soil, with riser dimensions coordinated per architectural drawings.
#4 NOSING BAR SLAB ON GRADE REF. PLAN UNDISTURBED SOIL #4 @ 16'' o.c. EACH WAY REF. ARCH.. FOR RISER DIMENSIONS 1' - 0" 1' - 0" MIN. 4" . . FOOTING BEYOND REF. PLAN UNDER SLAB PREPARATION 11 S510 _____ LAP SPLICE (2) #5 CONT. BOT.
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