The arrangement, character, extent, width, grade, construction and location of all streets shall conform to Construction Regulations of the City, or subsequent amendments thereto, and shall be considered in their relation to existing and planned streets, topographical conditions and public convenience and safety; and in their appropriate relation to the proposed uses of the land to be served by such streets. The street patterns shall discourage through traffic in the interior of a subdivision.
(a) Standards for All Streets. The design and improvement standards are suggested minimums for all streets. Hillside lots with grades of more than fifteen percent (15%) are subject to exceptions as provided under Chapter 1167.
(b) Horizontal Alignment. When there is an angle of deflection of more than ten degrees between two centerline tangent sections of a street, a curve of adequate radius shall connect them. Between reverse curves a minimum tangent of 100 feet shall be introduced.
(c) Vertical Alignment.
(1) All changes of grade shall be connected by vertical curves of a minimum length in feet equal to fifteen times the algebraic difference in the rate of grade.
(2) Minimum vertical visibility shall conform to the Ohio Department of Transportation regulation in effect on the date of the approval of the preliminary plat.
(d) Intersection Design Standards.
(1) The design and improvement standards for intersections are suggested minimums for all street intersections in subdivisions.
(2) Multiple intersections involving junctions of more than two streets shall be avoided.
(3) Four-way intersections of local streets should be avoided and three-way or T-intersections should be encouraged wherever possible.
(e) Special Street Types.
(1) Permanent dead-end streets are discouraged. Temporary dead-end streets shall be permitted only as a part of a continuing street plan, and only if a temporary turn-around satisfactory to Council in design is provided, and provisions for maintenance and removal are advanced. Temporary dead-end streets longer than 200 feet shall not be permitted.
(2) Dedication of new half-streets shall not be permitted. Where a dedicated or platted half-street exists adjacent to the tract being subdivided, the other half shall be platted.
(3) Where a subdivision adjoins an arterial street, a marginal access street shall be designed, if the subdivision design is such that residential lots would require direct vehicular access onto the arterial highway. Points of access to the arterial street shall be spaced at a minimum of 1,320 feet. A planting strip having a minimum width of twenty feet shall be provided between the pavement of the arterial street and the pavement of the marginal access street.
(4) Alleys shall not be approved in residential subdivisions, except where justified hy extreme conditions. Alleys may be required in commercial districts if other provisions cannot be made for adequate service access. The minimum widths for alleys shall be twenty-five feet for the right of way and eighteen feet for the pavement width.
(f) Streets for Commercial Subdivisions. Streets serving business developments and accessory parking areas shall be planned to connect with arterial streets so as not to generate traffic on local streets. The intersections of driveways from parking areas with arterial or collector streets shall be located so as to cause the least possible interference with traffic movement of the streets, and shall be located not less than 200 feet from each other. The Commission and/or CounciI may require marginal access streets to provide maximum safety and convenience.
(g) Street Improvements. All streets shall be graded to their full width, including side slopes, and improved in conformance with the standards given or referred to in these Regulations, the City's ordinances, resolutions and Construction Regulations.
(h) Street Widths. All streets, utilities, sidewalks, storm sewer systems, drainage systems, etc. shall be constructed in accordance with the City's Construction Regulations, these Regulations, ordinances and resolutions.
(i) Street Plans.
(1) Indicate right-of-way line, centerline, departing lot lines, lot numbers, subdivision limits and limits of construction.
(2) Indicate centerline curve data, including delta, radius, arc, chord and tangent.
(3) Indicate radius of all curb returns to back of curb.
(4) Indicate approved street name.
(5) Indicate stations at every 100 feet on centerline. Indicate stations at points of curve and tangent at the beginning and end of all returns at centerline, intersection and at subdivision or section limits.
(6) Indicate the back of curb for full length of all streets.
(7) Indicate the width of right-of-way distance between curbs and relation to centerline.
(8) When proposed streets intersect with or join existing streets or traveled way, indicate both edges of existing pavement, surface or curb and gutter for a minimum of 100 feet, or the length of connection, whichever is the greater distance.
(9) Indicate all existing or proposed drainage easements.
(10) Indicate direction of all drainage flow in streets, storm sewer, streams, subdrains and the like.
(11) Indicate all water mains, their sizes, valves and fire hydrants, and location of mains to centerline of street.
(12) Indicate all storm sewers and appurtenances. Identify storm sewer appurtenances by type and a number. Indicate the top and invert elevation of each structure. Tabulation in the plan view may be permitted. Storm sewer appurtenances and locations should be referenced to the property lines or street control.
(13) Provide the contributing area in acres at all culvert pipe, curb inlets and other entrances.
(14) Indicate the location of all or any springs either within or draining to street right of way and indicate proposed treatment of same.
(15) All springs will be capped and piped in a minimum six-inch diameter perforated pipe encased in washed gravel, and connected into the nearest storm manhole or curb inlet.
(16) Indicate proposed stream or channel relations. Show existing and proposed locations. Furnish detailed typical section and type of stabilization to be provided.
(17) Provide guard posts or barricades at the end of streets which are to be extended in the future.
(18) Indicate protection of ends of curb and gutter by providing for erosion control and temporary drainage where required.
(19) Where special typical section is approved, provide detail on plan.
(20) Add notes that may be necessary to explain the intent and purposes of the plan profile.
(21) Indicate symmetrical transition of pavement at intersection with existing street.
(Ord. 85-11. Passed 4-1-85.)