Notwithstanding the provisions of subsections (1),(2),(3) and (4) of section 5, the maximum allowable bearing pressure for non-cohesive soils where the least lateral dimension of the foundation is less than 1 meter shall be ascertained by the formula-

maximum allowable bearing pressure = P x b kilopascals
where-
P= the maximum allowable bearing pressure for that type of soil prescribed in subsections (1), (2), (3) and (4) of section 5 , in kilopascals; and
b = the least lateral dimension of the foundation, in meters.