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§ 154.165 STREET DESIGN.
   (A)   Sight distance, measured along the centerline of the street shall not be less than 300 feet on arterial streets, 250 feet on collector streets and 200 feet on minor (and local) streets.
   (B)   Local streets shall have a centerline radius of not less than 100 feet on hilly terrain, 175 feet on rolling terrain and 250 feet on ordinary terrain.
   (C)   Collector streets shall have a centerline radius of not less than 150 feet on hilly terrain, 250 feet on rolling terrain and 250 feet on ordinary terrain.
   (D)   Streets, curbs and walks may also be required in those areas where the absence of such improvements would create a hazard to the area environment and to the health, safety and welfare of its residents.
   (E)   Maximum length of a cul-de-sac shall be 750 feet.
   (F)   Minimum radius of a cul-de-sac shall be 60 feet for right-of-way and 50 feet for pavement.
   (G)   No islands or obstructions may be placed or constructed in cul-de-sac.
(Ord. passed 7-20-1992)
§ 154.166 INTERSECTIONS.
   (A)   The clear sight distance shall be 90 feet on ordinary terrain, 90 feet on rolling terrain and 70 feet on hilly terrain.
   (B)   The vertical alignment shall be flat on ordinary terrain, 2% on rolling terrain and 4% on hilly terrain.
   (C)   Streets shall intersect at 90 degrees whenever possible, but not less than 75 degrees at collector streets or less than 60 degrees at local street intersections, unless specific provisions are made for traffic control and visibility.
   (D)   The subdivider shall provide, at each street intersection, substantial, legible, permanent street signs, as approved by the Plan Commission. No street names shall be used which duplicate or may be confused with names of existing streets.
   (E)   The minimum centerline offset of intersections shall be 150 feet for local-local streets and local-collector streets, and 200 feet for collector-collector streets.
(Ord. passed 7-20-1992)
§ 154.167 DESIGN SPEED.
   All streets shall be designed for the maximum following speed in subdivisions for the described classifications (all other speeds for classifications remain for the existence of the thoroughfare plan).
Cul-de-sac
15 mph
Local
25 mph
Major collector
40 mph
Major residential
35 mph
Minor collector
35 mph
Minor residential
25 mph
Primary arterial
55 mph
Secondary arterial
55 mph
 
(Ord. passed 7-20-1992; Ord. 1996-7-1, passed 7-1-1996)
§ 154.168 EASEMENTS.
   (A)   Suitable easements shall be provided for the installation and maintenance of utilities. Such easements may be located as may be required to properly serve the utilities, but shall, whenever possible, be along rear and/or side lot lines. Utility easements shall as provided for in § 154.117 equally divided between adjacent lots, where such exist, and shall provide reasonable continuity from block to block.
   (B)   The rights-of-way for all drains shall conform to I.C. 36-9-27-33.
(Ord. passed 7-20-1992)
§ 154.169 GRADES.
   (A)   Maximum grades.
      (1)   The maximum grade of major residential streets shall not exceed 3%.
      (2)   The maximum grade of minor residential streets shall not exceed 4%.
      (3)   The maximum grade of cul-de-sac streets shall not exceed 7%, except for those portions of streets not to exceed 600 feet in length where the maximum grade shall not exceed 12%.
   (B)   Minimum grades.
      (1)   The minimum grade of concrete streets and gutters shall be 0.3%.
      (2)   The minimum grade for all other types of streets and gutters and for ditches shall be 0.4%.
(Ord. passed 7-20-1992; Ord. 1996-7-1, passed 7-1-1996)
§ 154.170 GUTTERS AND CURBS.
   (A)   Gutters and curbs may not be required for streets when the proposed subdivision consists of two dwelling units or less per acre.
   (B)   Gutters and curbs shall be required for all streets when the propose subdivision consists of two or more dwelling units per acre.
   (C)   Gutters and curbs may be in integral concrete curb or combined gutter and curb type and may be either straight or rolled.
(Ord. passed 7-20-1992)
§ 154.171 PAVEMENT.
   (A)   Flexible type pavement (asphaltic surface). Flexible type pavement (asphaltic surface) minimum design characteristics shall be as described in Table 2 below.
   [Table follows on next page]
Table 2: Minimum Pavement Section Requirements
Dedicated
Nondedicated
Major
Minor
Cul-de-Sac
Unsurfaced Alternate
A Stone Base
B Full Depth
C Stone Base
D Stone Base (Alt)
E Full Depth
F Stone Base
G Stone Base (Alt)
H Stone Base
I Stone Base (Alt)
Layer
Material
Table 2: Minimum Pavement Section Requirements
Dedicated
Nondedicated
Major
Minor
Cul-de-Sac
Unsurfaced Alternate
A Stone Base
B Full Depth
C Stone Base
D Stone Base (Alt)
E Full Depth
F Stone Base
G Stone Base (Alt)
H Stone Base
I Stone Base (Alt)
Layer
Material
Surface
HAC #11 surf
“ (PSY)
1.5
(165)
1.5
(165)
1.5
(165)
1.5
(165)
1.5
(165)
1.5
(165)
1.5
(165)
Binder
HAC #3 bind
“ (PSY)
25 (275)
2.5 (275)
2.0 (220)
2.0 (220)
Base
HAC #5 base
“(PSY)
3 (330)
8.0 (880)
3 (330)
3 (330)
6.0 (660)
Subbase
Cr. St. #73
-
2
2
Subbase
Cr. St. #53
8
8
8
8
8
6
6
Subbase
Cr. St. #2
4
4
4
Geotextile
Nonwoven
OZ/SY
10
10
10
10
Geotextiles will be required for all locations where soils are classified as having severe limitations according to the U.S. Soil Conservation Service
 
   (B)   Rigid type pavement (cement concrete).
      (1)   Minimum design characteristics of rigid street pavement shall be as follows:
 
Concrete *(Reinforced)
Major Residential
Minor Residential
Cul-de-Sac
Uniform thickness
**8 in. to 9 in.
7-1/2 in.
6 in.
Leveling course
1 in.
1 in.
1 in.
Compaction
95% mod. proctor
95% mod. proctor
95% mod. proctor
*Wire mesh continuous between expansion joints with steel dowels at expansion joints
**9 in. required at all intersections and where heavy truck traffic is proposed by developer or subdivider
 
      (2)   The Plan Commission shall determine the subbase requirements for rigid pavement based upon the area’s characteristics. The developer shall submit with the preliminary plan supporting data on the subbase being proposed for rigid pavement streets. Final required pavement must be installed prior to final plat approval.
(Ord. passed 7-20-1992; Ord. 1996-7-1, passed 7-1-1996)
CONSERVATION SUBDIVISION
§ 154.185 PURPOSE/INTRODUCTION.
   (A)   (1)   A conservation subdivision provides an alternative lot size and layout option which generally utilizes the clustering of houses and the dedication of remaining land to conservation areas.
      (2)   The purposes of this subchapter, among others, are as follows:
         (a)   To implement adopted land use, transportation and community policies, as identified in the County Comprehensive Plan;
         (b)   To conserve open land, including those areas containing unique and sensitive natural features such as woodlands, steep slopes, streams, floodplains and wetlands, by setting them aside from development;
         (c)   To protect areas of the county with productive agricultural soils for continued or future agricultural use, by conserving blocks of land large enough to allow for efficient farm operation;
         (d)   To provide greater design flexibility and efficiency in the siting of services and infrastructure, including the opportunity to reduce the length of roads, utility runs and the amount of paving required for residential development;
         (e)   To reduce erosion and sedimentation by the retention or existing vegetation and the minimization of development on steep slopes;
         (f)   To provide for a diversity of lot sizes, building densities and housing choices to accommodate a variety of age and income groups, and residential preferences, so that the county’s population diversity may be maintained;
         (g)   To implement adopted county policies to conserve a variety of irreplaceable and environmentally sensitive resource lands as set forth in the County Comprehensive Plan;
         (h)   To create neighborhoods with direct visual access to open land, with amenities in the form or neighborhood open space, and with a strong neighborhood identity;
         (i)   To provide for the conservation and maintenance of open land in the county to achieve the above mentioned goals and for active or passive recreational use by residents;
         (j)   To provide multiple options for landowners in order to minimize impacts on environmental resources (sensitive lands such as wetlands, floodplain and steep slopes) and disturbance of natural or cultural features (such as mature woodlands, hedgerows and tree lines, wildlife habitats, historic buildings and other cultural features);
         (k)   To provide standards reflecting the varying circumstances and interests of individual landowners, and the individual characteristics of their properties; and
         (l)   To conserve scenic views and elements of the county’s rural character, and to minimize perceived density, by minimizing views of new developments from existing roads.
   (B)   In order to achieve these purposes, this subchapter provides the process and standards for the development of conservation subdivisions.
(Ord. 1999-4-19, passed 4-19-1999)
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