San Francisco County Municipal Code § 703 Concrete Sidewalks

Except where special permits are issued as specified in Section 703.1, 704, and 705, sidewalk supported on the ground in any public street or other public way as defined in Section 185 of this Code, shall be of concrete. The concrete sidewalk shall be at least 3½" inches thick with a non-skid cement mortar finishing coat at least ½ inch thick, except that the finishing coat on terrazzo sidewalks shall be at least of one inch thick and shall contain an abrasive aggregate mixed into the finish coat for its entire thickness in the proportion by weight of two parts of abrasive aggregate to three parts of other aggregate. All sidewalks shall be placed in accordance with specifications and rules which the Director of Public Works is hereby authorized to prepare in conformity herewith and as required for public convenience and safety, such specifications and rules to apply to the quality and proportions of the required materials, the method of construction, and the type of finish. The finished surface of the sidewalk shall rise 1/5 inch per foot from curb grade to the property line unless a deviation therefrom is approved by order of the Director of Public Works. Sidewalk topping and wearing surface, when poured monolithic with the slab, may be included as a structural part of the slab, but the overall thickness shall not be less than 3½" inches. Sidewalks when unsupported by ground or constructed over excavated areas shall be constructed in accordance with Section 4301 of Article 43 of the Building Code of the City and County of San Francisco. (Amended by Ord. 137-66, App. 6/14/66)