The subdivider shall observe all design standards for land subdivision as hereinafter provided. These standards shall be considered as minimum stands and shall be varied or waived only as provided for in Section 6.

A. RELATIONS TO SURROUNDING AREA
The subdivision shall be in conformity with the respective zoning requirements, and the general layout shall harmonize and conform with plans for Plympton, as adopted by the Planning Board

B. "AS BUILT" ACCEPTANCE PLAN
The developer shall provide the Planning Board with one (1) set of reproducible plans and three (3) sets of prints of the completed subdivision. The plans must be prepared by a Registered Engineer and/or Surveyor and clearly indicate the as-built location and elevation of roadways, utilities, and other require improvements.

C. STREETS

1. Location and Alignment
   
   
   a. All streets in the subdivision shall be designed so that, in the opinion of the Planning Board, they will provide for safe vehicular travel. Due consideration shall also be given by the subdivider to the attractiveness of the street layout in order to obtain the maximum amenity of the subdivision. Long straight roadway sections should be avoided on minor streets where possible.
   
   b. Provision satisfactory to the Planning Board shall be made for the proper projection of streets, or for access to adjoining property which is not yet subdivided.
   
   c. Reserve strips prohibiting access to streets or adjoining property shall not be permitted, except where, in the opinion of the Planning Board, such strips shall be in the public interest.
   
   d. Street jobs with centerline offset of less than one hundred and twenty-five (125) feet shall be avoided.
   
   e. The minimum centerline radius of curved streets shall be one hundred fifty (150) feet. Greater radii may be required for secondary or major streets.
   
   f. All reverse curves shall be separated by a tangent at least one hundred (100) feet long.
   
   g. Streets shall be laid out so as to intersect as nearly as possible at right angels. No street shall intersect any other street at less than seventy-five (75) degrees.
   
   h. Property lines at street intersections shall be rounded or cut back to provide for a paved curb radius of not less than twenty-five (25) feet.
   
   
   
2. Width
   
   
   a. The minimum width of street rights-of-way shall be fifty (50) feet. Greater width shall be required by the Planning Board when deemed necessary for sight distance at the intersections. Right-of -way lines shall be rounded by tangent arcs with a minimum radius of fifty (50) feet. This will result in the right-of-way width totaling at least one hundred fifty (150) feet at the intersection.
   
   b. The typical cross section for minor streets shall conform to that indicated on Plate 4, (contained in the Appendix to the Regulations). The Planning Board may require greater paving sidewalk, and planting strip widths and curb requirements for major streets and secondary streets.
   
   
3. Grade
   
   
a. Grades of streets shall be not less than 1.0%. Grades shall not be more than 6.0% for major or secondary streets nor more than 8.0% for minor streets.

b. All changes in grade exceeding 1.0% shall be connected by vertical curves of sufficient length to afford, in the opinion of the Board, adequate sight distances.

c. At all intersections grades of streets shall not exceed 3.0% within a distance of one-hundred (100) feet within fifty (50) feet from the beginning of the intersection. Proposed streets shall also have a negative slope for a distance of at least fifty (50) feet from the beginning of the intersection.


4. Dead-end Streets
   
   
   a. Dead-end streets shall not be longer than eight hundred (800) feet unless, in the opinion of the Planning Board, topography or other local conditions necessitate a greater length. Each cul-de-sac shall contain no more than eight (8) housing units.
   
   b. Dead-end streets shall be provided at the closed end with a turn-around having an outside paved roadway diameter of at least one hundred and twenty (120) feet, or a temporary turn-around as directed by the Planning Board at its option. The width of pavement on the turn-around shall equal that of the servicing street.
   
   c. Permanent turn-arounds shall be profiled along the centerline turning radius, and the centers shall remain in a natural or landscaped condition in a manner acceptable to the Board. The maximum profile grade for a turn-around shall be 3.0%.
   
   
5. Street Cross-Section
   
   
   a. The following information shall be the minimum acceptable for all streets. The Planning Board may require more where circumstances and intended use dictate.
   
   
   1. Two (2) twelve (12) foot travel lanes for all minor, major and secondary streets.
      
   2. At least four feet (4') in width for road shoulder to be graded very closely to the profile of the street and sloped gradually toward the edge of the pave road unless otherwise directed.
      
   3. Location of roadway to conform to cross-section in Figure 4.
      
   4. All utilities including electric, telephone, gas and cable TV shall be underground unless directed otherwise by the Board.
      
   5. All poles servicing telephone, electric and other wires shall be located at least five (5) feet from the edge of all new roads.