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   1111.15 TYPICAL STREET STANDARDS.
   The Planning Commission will determine the required minimum dimensional standards of all rights-of-way, pavements, sidewalks and other public improvements but shall consider the advice and recommendations of the Engineer in doing so. The typical street requirements shall be as follows:
 
Road
Feet
(a)
Residential
26
Industrial
30
Apartment
30
   (b)   Easements. Easements across lots or centered on rear or side lot lines shall be provided for utilities where necessary and shall be at least ten feet wide. Easements shall also be provided for watercourses, channels or streams, and shall be adequate for the purpose.
      (Ord. 120-91. Passed 8-9-93.)
   1111.16 MINIMUM AND MAXIMUM GRADES.
   Minimum grades on any street shall be one-half of one percent (.5%) at gutters for purposes of drainage and not more than six percent for major streets nor ten percent for minor streets wherever feasible. Streets shorter than 600 feet shall be not more than twelve percent.
(Ord. 120-91. Passed 8-9-93.)
   1111.17 STREET ALIGNMENT.
   (a)   Vertical. The profile grades for major streets shall be connected by vertical curves of a minimum length equivalent to at least forty times the algebraic difference between the rates of grade, expressed in feet per hundred; for secondary and minor streets, at least twenty times.
   (b)   Minimum Horizontal; Radii of Centerline Curvature.
 
Type of Street
Degrees
Feet
Major
12
475
Secondary
19
300
Minor
28
200
Cul-de-sac
58
100
   A tangent at least 100 feet long shall be introduced between reverse curves on major or collector streets and at least fifty feet on minor streets.
   (c)   Visibility.
      (1)   Minimum vertical visibility (measured four and one-half feet eye level to eighteen inches tail light) shall be:
         500 feet on main thoroughfares;
         300 feet on secondary thoroughfares;
         200 feet on minor streets; and
         100 feet on streets shorter than 600 feet.
      (2)   Minimum horizontal visibility shall be:
         300 feet on main thoroughfares;
         200 feet on secondary thoroughfares; and
         100 feet on all other streets, as measured on such centerlines.
         (Ord. 120-91. Passed 8-9-93.)
   1111.18 INTERSECTIONS.
   Property lines at street intersections shall be rounded with a radius of at least twenty feet for residential and thirty feet for industrial or major street intersections and curbs or edges of street pavements shall be rounded by radii of at least thirty-seven feet for residential and fifty-five feet for industrial or major street intersections.
(Ord. 120-91. Passed 8-9-93.)
   1111.19 BLOCKS.
   (a)   Block lengths should usually not exceed 1,600 to 1,800 feet or be less than 600 feet. Pedestrian crosswalks may be required under certain conditions, but should be avoided through proper block length and street arrangement whenever possible.
   (b)   The width of a block shall normally be sufficient to allow two tiers of lots or to provide building sites suitable to the special needs of the type of use contemplated.
   (c)   The depth and width of properties laid out or reserved for commercial and industrial purposes shall be adequate to provide for the off-street parking and service facilities required by the type of use and development contemplated. The permanent reservation of suitable buffer and easement areas may be required where deemed essential. Such areas shall normally be made a part of abutting lots or building sites.
(Ord. 120-91. Passed 8-9-93.)
   1111.20 LOTS.
   (a)   Size, Shape and Orientation. The lot size, width, depth, shape orientation shall be appropriate for the location of the subdivision and type of development and use contemplated. A length and width ratio of approximately two to one is considered desirable. Lot depth in relation to width shall normally not exceed a ratio of three to one.
   (b)   Lot Dimensions. Lots shall conform in size to at least the minimum area and width requirements specified in the Zoning Code of the particular use district in which it is located. Business and industrial sites should be sufficient in width and depth to allow for proper vehicular access and appropriate parking area and spacing.
   (c)   Corner Lots. Corner lots for residential use shall normally be platted wider than interior lots to permit appropriate building setback from, and orientation to, both streets.
   (d)   Side Lot Lines. Side lot lines shall normally be at right angles to the street or radial to curved streets, except when natural or cultural features suggest other suitable and appropriate locations.
   (e)   Double Frontage Lots. Double frontage lots shall be avoided except where essential to provide separation of residential development from major arteries or specific disadvantages of topography.
   (f)   Building Setback Line.
      (1)   Building setback lines shall conform to the requirements specified in the Zoning Code for the use district in which it is located.
      (2)   The established setback for detached accessory buildings at the rear of a corner lot shall not be closer to the street than the existing or established setback line for the main building on the adjoining lot.
   (g)   Access to Streets. Every lot shall abut on a public street.
(Ord. 120-91. Passed 8-9-93.)