All sidewalks hereafter constructed shall have a six inch sub-base or foundation to consist of cinder or gravel. If a sidewalk is to be constructed of concrete, all concrete work shall be not less than four inches in thickness. The materials shall be of first grade quality, and in proportions of three parts sand, two parts gravel and one part cement. If brick is to be used in the construction of any sidewalk, the sub-base or foundation shall be six inches of cinder or gravel and the brick shall be a good hard vitrified brick.
(Ord. 827. Passed 11-14-29.)