The structural design of the roadbed shall include determination of the thickness of subbases, bases and surfacing to be placed over basement soil, based on the method specified in the City's Standard Specifications and Design Criteria according to the method as specified in the specifications. In no case shall the thickness of untreated base be less than six inches nor shall the thickness of plant-mixed surfacing be less than two inches.
(Ord. 143-76 § 2, 1976; amended during 1990 republication)