10-1-12: FOUNDATION FOOTINGS:
   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)