A. Construction Specifications: Foundation footings of all buildings hereafter constructed, altered or repaired within the city shall be made of concrete of at least one part of Portland cement, three (3) parts of clean sand and five (5) parts of gravel passing a two and one-half inch (21/2") screen, and of sufficient thickness and area to safely sustain the weight to be imposed thereon, and shall be not less than that provided in the following table:
Height Of Wall | Width Of Wall | Width Of Footing | Thickness Of Footing | |
Garage footings | 6 inches | 6 inches | 12 inches | 6 inches |
Residence | 12 inches | 8 inches | 20 inches | 6 inches |
Business | 12 inches | 12 inches | 24 inches | 8 inches |
Business | 24 inches | 16 inches | 28 inches | 10 inches |
Business | 24 inches | 20 inches | 32 inches | 12 inches |
Business | 24 inches | 24 inches | 48 inches | 16 inches |
B. Additional Width Requirement:
1. The footing shall in all cases be a least twelve inches (12") wider on all sides than the piers and columns supported by such footings.
2. Provided, however, that if the superimposed load is such as to cause undue transverse strain on any footings projecting twelve inches (12"), the thickness of such footings shall be so increased as to safely support the load to be imposed thereon.
C. Reduction In Thickness And Projections: For light buildings or structures, and for small piers to sustain light loads and where soil conditions permit, the building inspector may, at his discretion, allow a reduction in the thickness and projections for footings as above provided. (Ord. 15.04)