1121.09 STREET STANDARDS.
   (a)    Rights of Way, Business Streets. Where, in the opinion of the Planning Commission, a proposed street has a high potential of becoming a business street or secondary thoroughfare, the rights of way may be required to be greater than sixty feet. Sidewalks shall be installed.
   (b)    Rights of Way, Residential Streets. The minimum right-of-way width of any residential street shall be sixty feet. Exceptions to this minimum width may be granted by the Planning Commission and the City Engineer when such an exception is deemed necessary because of unusual topographic features, existing street widths or other unusual factors, and when such exception will not adversely affect the general public or nullify the intent of these regulations. For minimum construction requirements, see Typical Street Sections.
   (c)    Improvements on Development Side of Street. If a subdivision fronts on an existing street or highway, all required improvements shall be installed on the development side of the street.
   (d)    Paving Alleys. Alleys, where approved, shall be paved in accordance with the requirements of the Engineering Department.
   (e)    Width of Easements. Easements for the required utilities and improvements, where necessary, shall be not less than the width determined necessary by the City Engineer for the installation of the improvement of utilities concerned.
   (f)   Grades. Minimum grades on any street shall be 0.3 percent for the purpose of drainage. Maximum grades shall be as follows:
 
Percent
Major thoroughfares
6
Secondary thoroughfares
7
Residential streets
10
Alleys
10
   (g)    Vertical Curves. Major or secondary thoroughfares shall have a minimum sight distance of 500 feet measured between points five feet above the center line of the roadway. Minor streets shall have a minimum sight distance of 200 feet.
   (h)    Center Line Curvature. Minimum radii of curvature on the center line shall be at least 500 feet for major or secondary thoroughfares and shall be a minimum of one hundred feet for minor streets.
   
   (i)    Reverse Curves. Tangents between reverse curves shall be provided, not less than one hundred feet on major or secondary thoroughfares and not less than twenty-five feet for minor thoroughfares.
   (j)    Curbs at Intersecting Streets. Streets intersecting at right angles shall be rounded at the curb with a minimum radius of twenty-five feet. When streets intersect at other than right angles, the curbs shall be rounded with a curve of a radius acceptable to the City Engineer.
(Ord. 5921/62. Passed 5-14-62.)