Section R403.1.1 of the 2021 International Residential Code is hereby amended to read:

R403.1.1 Minimum size footing/foundation. Minimum sizes for concrete and masonry footings within the town of South Prairie shall be 16 inches for 1 story structures, 18 inches for 2 story structures, 20 inches for 3 story structures or as set forth in Table R403.1 and Figure R403.1(1), but in no case shall footing widths be less than the minimums set forth unless a geotechnical analysis has been submitted and approved by the Town demonstrating that less than the minimums listed can support the proposed loads. The footing width, W, shall be based on the load-bearing value of the soil in accordance with Table R401.4.1. Spread footings shall be at least 6 inches (152 mm) in thickness. Footing projections, P, shall be at least 2 inches (51 mm) and shall not exceed the thickness of the footing. The size of footings supporting piers and columns shall be based on the tributary load and allowable soil pressure in accordance with Table R401.4.1. Footings for wood foundations shall be in accordance with the details set forth in Section R403.2, and Figure R403.1(2), R403.1(3) and R403.1.3.2.