Bituminous concrete pavement shall have an equivalent structural depth of at least 7 1/2 inches for parking aisles, access drives, cartways, minor streets, and collector streets having a minimum wearing surface of not less than 1 1/2 inches of pavement, Mix 1-5, a minimum bituminous stabilized base course of not less than two inches, Mix 1-2, and a dense graded aggregate base course to provide the remaining depth.