(a) All streets and public ways shall be graded to their full width, including side slopes, to the appropriate grades as specified on the construction drawings and approved by the Engineering Department. Street and curb construction shall be in accordance with the current standards and specifications of the Ohio Department of Transportation with the exception that the Municipality prefers English over Metric units of measure. A copy of the manual is on file in the Engineering Department.
(b) Detailed construction drawings shall show a typical pavement cross section inclusive of curbing, pavement, stone base, and compacted subgrade. A detailed drawing of curbs should also be shown. The slope from pavement centerline to the flowline of the gutter should be a minimum one-fourth (1/4) inch per foot on twenty-six (26)-foot-wide pavements. The centerline grade for streets should be no less than fifty-two percent (52%), no more than eight percent (8%) for mid-block spans, and no greater than four percent (4%) within 100 feet of an intersection.
(c) All streets, walks, drives, and curbs shall be installed upon a suitable compacted subgrade in conformity with the line and grades on the construction drawings. Unsuitable subgrade material shall be removed and a controlled density fill of suitable material shall be installed to the level specified for subgrades. The Engineering Department shall inspect the subgrades and determine their suitability in accordance with ODOT practices.
(d) A compacted stone base of two (2) layers shall be placed on the compacted subgrade. The compacted thickness of the stone base shall be twelve (12) inches. Both layers of stone base shall conform to ODOT 304. Alternative stone bases may be considered by the Engineering Department. Compacted stone base shall conform with the line and grades established on the construction plans.
(e) Two (2) courses of asphaltic concrete shall be placed on the primed and compacted stone base. The prime coat shall conform to ODOT 448. The base course conforming with ODOT 448 shall be placed at a compacted thickness of a minimum of two (2) inches. The surface course conforming with ODOT 448 shall be placed at a compacted thickness of minimum of one and one-half (1.5) inches. The overall compacted thickness of the asphalt shall be three and one-half (3.5) inches.
(f) Concrete streets conforming to ODOT 452 may be considered an alternate to asphalt pavements. The minimum thickness for concrete street shall be six (6) inches, however the Engineering Department may require additional thickness upon review of subdivision plat.
(g) Curbing shall be installed on all streets, cul-de-sacs, and turnarounds in the subdivision with six (6)-inch underdrain at the back of the curb. The underdrain shall be perforated ADS tubing with a sock around the pipe, conforming to ODOT 707.47. The minimum radius for curbing at street intersections is twenty-five (25) feet. Curb and gutter may be ODOT type 2. The Engineering Department will review proposed curbing and make a recommendation to the Commission.
(h) The minimum pavement radius for a cul-de-sac shall be fifty (50) feet measured to back of curb. Cul-de-sacs shall drain from the center to collector basins at or behind the curb line. Cul-de-sacs shall not contain soil islands or landscape plantings.
(i) The minimum width of the paved street shall be twenty-six (26) feet measured back of curb to back of curb. (Ord. 2257. Passed 11-8-21.)