CHAPTER 1111
Design Standards
1111.01   Minimum pavement widths.
1111.02   Street grades.
1111.03   Grade changes.
1111.04   Curvature of streets.
1111.05   Intersections.
1111.06   Entrance gates and signs.
 
CROSS REFERENCES
Improvements - see P. & Z. Ch. 1109 
Design requirements - see P. & Z. 1109.01 
Street construction - see P. & Z. 1109.09 
Variances - see P. & Z. 1113.01
 
 
1111.01 MINIMUM PAVEMENT WIDTHS.
   Minimum pavement widths, back to back of curb, installed at subdivider's expense, shall be as follows:
   (a)    Primary streets - fifty feet; secondary streets - forty-four feet; collector streets - thirty-six feet; minor streets - thirty feet.
   (b)    Minor streets, including cul-de-sacs, shall not be over six hundred feet long. The pavement of a turning circle at the end of a dead-end street shall have a minimum outside diameter of eighty feet. A “T” or “Y” shaped paved space, when approved by the Planning Commission in place of a turning circle, shall extend entirely across the width of the street right-of-way, except for sidewalk space, and shall be at least ten feet wide with the flared portion rounded by minimum radii of twenty feet.
      (Ord. 1973-10. Passed 1-8-74.)
1111.02 STREET GRADES.
   (a)    The grades of streets shall not exceed the following, except that where unusual or exceptional conditions exist, the Engineer may modify these regulations:
      (1)    Primary streets: four percent (4%).
      (2)    Secondary and collector streets: seven percent (7%).
      (3)    Minor streets and service drives: ten percent (10%).
      (4)    Pedestrian ways or crosswalks: twelve percent (12%), unless steps of an acceptable design are to be constructed.
      (5)    In no event shall the minimum grade of any street be less than four-tenths of one percent (.4%).
         (Ord. 1973-10. Passed 1-8-74.)
1111.03 GRADE CHANGES.
   All changes in street grades in excess of one percent (1%) shall be connected by vertical curves of a minimum length equal to fifteen times the algebraic difference in the rates of grade, but not less than fifty feet.
(Ord. 1973-10. Passed 1-8-74.)
1111.04 CURVATURE OF STREETS.
   The radii of curvature on the centerline shall not be less than the following:
   (a)    Primary and secondary streets: 400 feet.
   (b)    Minor streets and service drives: 200 feet.
      (Ord. 1973-10. Passed 1-8-74.)
1111.05 INTERSECTIONS.
   (a)    At street intersections, property line corners shall be rounded by an arc, the minimum radius of which shall be twenty-five feet.
   (b)    Street curb intersections shall be rounded by radii of at least twenty feet.
(Ord. 1973-10. Passed 1-8-74.)
1111.06 ENTRANCE GATES AND SIGNS.
   Entrance gates, posts, columns, walls, fences or similar structures designed to indicate entrances to subdivisions or parts thereof, and signs designating the subdivision or development, are permissible either on public or private property, provided both the Planning Commission and Council determine such structures to be desirable. In no case will such approval be given unless provision is made, satisfactory to Council, for proper location and maintenance of such structures.
(Ord. 1973-10. Passed 1-8-74.)