A reinforced concrete stair rests on nine-percent compacted fill over subgrade. The stair slab features number three reinforcing bars at twelve inches on center each way and number three nosing bars typically placed at each step. A concrete foundation footing at the base incorporates two number four bars and extends a minimum of one foot zero inches below grade with a ten-inch minimum width. The exact profile of steps is coordinated with architectural drawings, and adjacent paving or concrete slab is sized per site plan.
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