(A) Grading. Streets shall be graded to the full width and completely constructed with an all-weather surface roadway complete with curbs of the wall type or combined curbs and gutters. All construction shall be approved by the City Engineer or the County Engineer, as provided in Section 1220.12, according to the standards and specifications which are on file in their respective offices and which are incorporated herein by reference.
(B) Pavement; Construction Costs. The width of pavement on all streets shall be not less than twenty-eight feet, measured from curb face to curb face. In the case of highways and major and secondary streets, as designated in the Master Plan, arrangements shall be made through the City Engineer or the County Engineer to pave these streets to their recommended widths, the subdivider being required to bear the cost of the twenty-eight foot portion only. The cost of curb and gutter construction shall in all cases be borne by the subdivider.
(C) Master Plan. The Master Plan is hereby defined as the Comprehensive Plan (which may consist of several maps, data, etc.) prepared by Harland Bartholomew and Associates, City Planners, St. Louis, Missouri, in association with Carroll V. Hill and Associates, Dayton, Ohio, August, 1957, or any portion thereof, adopted by the Planning Commission on March 23, 1960, and any amendments thereto, showing the general location and extent of the physical facilities of the City, including major streets and main thoroughfares, parks, schools and other public open spaces and public building sides. (Ord. 72-70. Passed 4-13-70.)
(D) Design Standards.
(1) Generally. The design and improvement standards contained in Table 1 following Chapter 1222 are suggested minimums for all streets. All streets shall be designed and constructed in accordance with the standards specified in Table 1.
(2) Horizontal alignment. When there is an angle of deflection of more than five degrees between two centerline tangent sections of a street, a curve of adequate radius shall connect them (See Table 1.) Between reverse curves, a minimum tangent of 100 feet shall be introduced.
(3) Vertical alignment.
(a) All changes of grade shall be connected by vertical curves of minimum length in feet equal to twenty times the algebraic difference in the rate of grade for arterials and industrial streets and fifteen times such difference for collector and local streets.
(b) Minimum vertical visibility shall conform to Table 1 and the Ohio Department of Transportation's regulations in effect on the date of the approval of the preliminary plat.
(c) No street grade shall be less than 0.60 percent and in no case shall a street grade be more than three percent within 100 feet of an intersection.
(4) Intersection design standards.
(a) The design and improvement standards for intersections are suggested minimum standards for all street intersections in a subdivision. These standards are included in Table 1. Streets shall remain tangent for at least 100 feet beyond the point of intersection. The minimum angle of intersections shall be seventy-five degrees with ninety-degree intersections preferred.
(b) Multiple intersections involving junctions of more than two streets are not permitted.
(c) Four-way intersections of local streets should be avoided and threeway or T-intersections should be encouraged wherever possible.