All sidewalks and curbs or combination curb and gutter hereafter constructed in the city shall be composed of concrete or artificial stone, and shall be composed and constructed as follows: In the construction of all concrete walks, the surface of the ground shall be reduced to the proper grade and solidly tamped so as to give the walk when finished a slope toward the abutting street of one inch, if possible, to every four feet in width. In this, a foundation not less than four inches thick shall be laid, which shall be evenly and smoothly troweled. All cement walks shall be laid with a cutoff in at least every 50 feet of walk by inserting a strip of wood or an asphalt expansion joint, one-half-inch thick extending through to the ground. One-course cement construction in building sidewalks shall only be permitted and allowed.
(Prior Code, § 95.52)