Concrete footings step down sequentially to maintain the required depth below grade or slab level. Footings incorporate continuous top and bottom reinforcing bars with standard ninety-degree hooks at terminations. Lap splices of length ls occur typically within the runs. Clearances of three inches at the bottom and sides and two inches at the top are maintained. Maximum step vertical dimensions of eighteen inches and minimum horizontal step dimensions of two feet zero inches apply, with slopes provided as required by soil conditions.
'D' 3" CLR. ℓ s TYP. 2" CLR. ℓ s TYP. FOOTING SLOPE IF REQ'D. BY SOIL CONDITION FOOTING BOTTOM REINF. BOTTOM FTG. TOP REINF. FOOTING TOP REINF. STD. 90° HK., TYP. REINF. NOTE: UNLESS OTHERWISE NOTED, STEP FOOTINGS AS REQUIRED TO PROVIDE SPECIFIED DEPTH BELOW GRADE/SLAB 2" CLR. 3" CLR. 3" CLR. 3'-0" MAX. 2' - 0" MIN. 'D' 18" MAX. 18" MAX. 6" TYP. 6" TYP
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