The concrete steps feature a maximum riser height of two feet and are cast directly against undisturbed earth. If the excavation ravels, the void must be backfilled with concrete when the footing is cast. The vertical face and horizontal tread dimensions are specified by variables 'H' and 'D' with minimum thickness requirements.
8" 18" 36" FACE OF STEPS SHALL BE CAST AGAINST UNDISTURBED EARTH. IF EXCAVATION RAVELS, BACKFILL W/ CONC WHEN FTG IS CAST. 8" 2H MIN "H" 2' - 0" MAX D MIN "D"
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