§ 903.01  CONSTRUCTION SPECIFICATIONS.
   (a)   All sidewalks and driveways hereafter constructed, reconstructed, replaced, altered or repaired in dedicated streets within the corporate limits of the city shall conform to the following requirements.
   (b)   For the purpose of this chapter all paved areas between the curb line and the property line in dedicated streets shall be considered as sidewalk or driveway.
      (1)   Width. Sidewalks shall be at least four feet wide on streets 40 feet or less in width and at least five feet wide on streets over 40 feet in width.
      (2)   Alignment. The property edge of sidewalks shall be laid on the property line abutting and fronting upon the street.
      (3)   Grades. The grade of sidewalks and driveways shall have a slope towards the curb of three-eighths of an inch per foot from the property line to the established grade of the top of the curb, except that driveway aprons may have a steeper slope in the tree lawn or curb lawn area in order to meet the lowered curb at the driveway apron. All paved or unpaved tree lawns or curb lawns shall slope uniformly from the grade at the edge of the sidewalk nearest to the curb to the grade at the top of the curb.
      (4)   Materials; thickness; specifications. All sidewalks and driveways shall be constructed in accordance with the specifications on file in the office of the Mayor. All sidewalks shall be at least two and one-half inches thick if constructed of stone and at least four inches thick if constructed of concrete. All driveways, including that portion of driveways across sidewalks, shall be at least four inches thick if constructed of stone and six inches thick if constructed of concrete. Materials other than stone or concrete proposed to be used for sidewalks or driveways and the thickness of such sidewalks or driveways shall be approved and established by the Mayor or his or her duly authorized representative.
      (5)   Exceptions. Notwithstanding the foregoing requirements, the Mayor or his or her duly authorized representative shall have authority to modify the provisions of divisions (b)(2) and (b)(3) above whenever in his or her judgment the existing grades, structures, plantings or other conditions render it impracticable, uneconomical or unsafe to enforce strict adherence to such requirements.
(Ord. 5273, passed 7-26-1960)