(a) All sidewalks shall be constructed of portland cement concrete and shall be constructed to a true line and grade as established by the public works department. The subgrade shall be carefully prepared, and where existing subgrade material is, in the opinion of the public works department, unsuitable as a foundation material for sidewalks, the unsuitable material shall be removed and replaced with satisfactory compacted material. The portland cement concrete shall meet the city paving specifications for cement, water, aggregate and mixing. The operations of placing, finishing and curing shall also conform to the general requirements as specified in the city paving specifications.
(b) Unless otherwise specified, the sidewalks shall be constructed four (4) inches thick where subjected to pedestrian traffic only. They shall be five (5) inches thick at all residential driveways. At all business driveways or entrances the thickness shall be figured to meet the wheel loads expected, but in no case shall the walk across such entrances be less than six (6) inches thick. The edges of the walk may be bevelled and suitable allowance may be made with additional bevelling to protect the edges at all locations where it can be reasonably expected the walk will be crossed by vehicles. Planes of weakness shall be marked off on the surface in square blocks. These blocks shall contain not less than nine (9) square feet, nor shall they exceed twenty (20) square feet.
(c) On these lines the concrete shall be cut through for not less than one-fourth the thickness with a pointed trowel and the concrete edged on both sides. An expansion joint made of one-inch prefabricated asphalt material shall be placed at the ends of each lot, and against any curb that the sidewalk abuts, but these expansion joints shall not be placed more than one hundred (100) feet apart.
Source: Code 1962, § 9-1-4; Ord. No. 3058, § 1(31), 3-1-82