§ 91.68  MINIMUM REQUIREMENTS.
   All plans and specifications must conform to the following minimum requirements before permit for construction or reconstruction shall be permitted:
   (A)   Driveways shall be constructed in a manner and of a material equal at lest to that existing for the paving in the public street adjacent thereto, except that where concrete pavement exists in the public street and bituminous surface is desired for the driveway.  Such surfaces shall be permitted provided it shall have a minimum depth of two inches without any loose material on top and have a base of water bound macadam at least six (6) inches thick, and provided that a Portland Cement concrete apron not less than three (3) feet in width be constructed between the existing concrete pavement and the proposed bituminous driveway surface.
   (B)   Where a driveway of any kind of material is constructed across the sidewalk space, it shall conform to the sidewalk grade as established.
   (C)   Where a driveway of any kind of material is constructed across an existing sidewalk, said sidewalk shall be removed and replaced with Portland Cement Concrete for the full width of the driveway and for a distance of at least twelve (12) inches on both sides of said walk.  This portion shall be not less than six (6) inches in thickness and constructed in accordance with common engineering practice.
   (D)   Macadam driveways where permitted herein shall be not less than six (6) inches thick, compacted depth.
   (E)   Where paving in the public street is of concrete and a concrete driveway is constructed, a one inch (1") bituminous premoulded expansion joint with load transmission unit shall be placed approximately three feet from the edge of the said concrete paving and normal to the center line of the driveway in accordance with common engineering practice.
   (F)   The width of the driveways for other than residential or dwelling, house shall not exceed thirty (30) feet at the outer or street edge of the sidewalk.  Where two (2) or more adjoining driveways are provided for the same property, a safety island of not less than ten (10) feet at the outer or street side of the sidewalk shall be provided.  Not more than two (2) such driveways shall be allowed to any one owner for any one (1) piece of property on any one street for each one hundred (100) feet of continuous frontage thereof.
   (G)   The width of the driveways for residential or dwelling house shall be not less than eight (8) feet or more than fourteen (14) feet at the outer or street edge of the sidewalk.
   (H)   The width of the driveway opening at the curb line shall not exceed the width of the driveway at the inner or property edge plus twenty (20) feet, nor be less than the width of the driveway at the inner or property edge of the sidewalk plus ten (10) feet.  In no instance should the radius be less than three (3) feet at curb corners, and this only when the driveway is flared; or more than ten (10) feet when the driveway is at right angles to the street line.  The center line of all driveways must be approximately at right angles to the curb line of the pavement in the public street for a distance of at least ten (10) feet from said curb line.
   (I)   All driveways shall be so graded between the gutter and the sidewalk that it will not be necessary to change the established grade of either and will not elevate or depress any portion of either. No part of said driveway shall extend beyond the curb line in such manner as to change the grade of said gutter or obstruct the free flow of water in said gutter.  Where elevations or depressions are necessary in the street right-of-way between the curb and sidewalk, said street right-of-way shall be graded on both sides of the driveway to a distance sufficient to create a gradual ascent or descent.  At no time shall the gradient exceed one (1) foot vertical to ten (10) feet horizontal.
   (J)   Where driveways cross open ditches in the street right-of-way, culverts shall be installed.  The size of the opening in said culverts shall be at least that obtained by a fifteen (15) inch diameter pipe unless the Building/Zoning Administrator shall determine that existing conditions require a smaller size.  Said culverts shall be constructed of state approved corrugated culvert pipe or equivalent.  The length of culvert shall be determined by the following method:  For ditch depth of two (2) feet or less the culvert shall extend not less than five (5) feet beyond both edges of the driveway where it crosses the ditch.  For each additional foot depth of ditch add two (2) feet to the above figure, except that no culvert shall be less than twenty (20) feet long and except that where headwalls are constructed at the ends of the culvert the length may be less than said minimum if the Building/Zoning Administrator determines that existing conditions require a shorter length.
   (K)   Where existing catch basin is in the area of the proposed driveway, the tops shall be removed and replaced with a manhole top with perforated lid at the sole cost of the contractor.
(Ord. 125, passed 5-22-62)  Penalty, see § 91.99