§ 91.020 SPECIFICATIONS OF SIDEWALKS AND CROSSINGS.
   (A)   Sidewalks shall be constructed in the following manner. The surface of the ground upon which sidewalks are to be laid shall be graded by excavating or filling, and a smooth surface made for the bed of the sidewalks four inches below the grade line of the sidewalk. The top of the walk when completed shall have a slope of one-eighth of an inch to the foot towards the center of the street along which the sidewalk is laid.
   (B)   The sidewalk shall be laid off in equal sections as follows. When a walk four feet wide is to be constructed, the sections or blocks shall be four feet square; where five feet wide, five feet square; where six feet wide, six feet square; where eight feet wide, four square; where ten feet wide, five feet square; and when 12 feet, six feet square.
   (C)   The sections shall be filled with concrete to a depth of four inches, composed of an acceptable concrete mix, as defined in the then-current issue of the Road and Bridge Specifications of the State of Illinois.
   (D)   (1)   Necessary street and alley crossings shall be constructed, and where street and alley crossings are to be constructed, the surface of the ground upon which the crossings are to be laid shall be graded by excavating and filling, and a smooth surface made for the bed of the crossing six inches below the grade line of the walk.
      (2)   The crossing shall be laid off in equal sections in the same manner as is provided for the squares of blocks of the walk, and the sections shall be filled with concrete of the same composition as set out in division (C) above, to a depth of six inches.
      (3)   In addition, a concrete reinforcing welded-wire fabric shall be placed of sufficient gauge, according to the State of Illinois Road and Bridge Specifications.
   (E)   The surface of all crossings shall be grooved parallel with the walk and shall also be grooved exactly over the joints between the concrete.
   (F)   Proper expansion joints shall be made and provided where the walk joins or abuts any other walk or crossing.
   (G)   All water must be clear and pure in that it is free from alkali, sulphur and discoloration.
   (H)   Mixing of material must comply with the then-current issue of State of Illinois Road and Bridge Specifications, and meet the approval of the Superintendent of the Street and Bridge Department.
(1986 Code, § 16.04.050) (Ord. 1261, passed - -1985)