1809.3 Stepped footings.

The top surface of footings shall be level. The bottom surface of footings shall be permitted to

have a slope not exceeding one unit vertical in 10 units horizontal (10-percent slope). Footings shall be stepped where it is necessary to change the elevation of the top surface of the footing or where the surface of the ground slopes more than one unit vertical in 10 units horizontal (10-percent slope).

For structures assigned to Seismic Design Category D, E or F, the stepping requirement shall also apply to the top surface of grade beams supporting walls. Footings shall be reinforced with four No. 4 bars. Two bars shall be place at the top and bottom of the footings as shown in Figure 1809.3.

FIGURE 1809.3 STEPPED FOOTING

(Ord. No. 3143, § 4, 12-13-22)