The following improvements shall be installed and constructed by the subdivider to the satisfaction of the Board, and after consultation with the Selectmen, and under the supervision of the Town Road Agent, the subdivider shall be required to file a bond or make other suitable surety as contained in Section 5.11 prior to approval of the final plat.
Monuments
Monuments constructed of stone or concrete, at least 4 X 4 inches on the top and at least 35” long, or holes with iron pins drilled in ledge or large boulders, shall be set at all block corners and permanent boundary markers, such as iron pins or equivalent markers at all lot corners.
All Streets
All work shall be done in conformance with the latest edition of the state of New Hampshire Department of Public Works and Highways standard specifications for road and bridge construction where applicable and any other standards and specifications as adopted by the Board and the Board of Selectmen, the most stringent requirements shall apply. Additional requirements and specifications may be specified by the Board as the individual subdivision (s) warrant.
Shall have a width in accordance with Section 6.19B.
The roadway or traveled way shall be in accordance with Section 6.19D Exceptions, see 6.13C.
The roadway will be constructed in accordance with the following specifications:
Grading: remove all topsoil, stumps, roots and rocks or outcroppings. Ledge shall be removed to a depth of 3’ (or more) below the finish grade of the sub-surface.
Minimum sub-base of 12” bank-run gravel or better material.
Minimum base of 3” crushed bank run gravel or better material.
4. Slopes: in cut - earth 2:1
ledge 1:2
in fill - under 10 ft. 4:1
over 10 ft. 2:1
All slopes loamed to a minimum depth of 2 inches and seeded, or as an
alternative rip-rap may be used.
Shoulders: (1/2” / ft. pitch) minimum width of 4 ft. each side.
Drainage swale minimum width of 3 feet and minimum depth of 16 inches except where well drained soils permit and the Planning Board accepts deviation. Stabilization of swale surfaces as dictated by pitch.
Surface: The road surface shall consist of hot bituminous mix, to be applied in two separate applications, consisting of 1 ½ inches of ¾ inch diameter stone base and 1 inch of ½ inch wearing surface of finish coat. The percentage of liquids will be determined by estimating the weight of vehicles that will use the road.
All culverts to be minimum of 18” or size deemed reasonable.
7.3 All proposed drainage facilities and culverts shall be installed. Erosion shall be controlled by placing mulch or matting on all surfaces disturbed by construction of the roadway and on all other surfaces where there is danger of eroded material being carried to the roadway area.
7.4 The roadway shall be graded to the final grade in accordance with profile and cross section submitted. They shall be properly crowned and contoured so that no water shall be permitted to collect in stagnant pools or to run across the street on its surface, but it shall be directed into ditches or catch basins and shall be piped underground in a pipe of sufficient size to carry the normal flood flow of water, provided no such pipe or culvert shall be less than 18 inches in diameter or size deemed suitable by the Board. All roadways shall be in the center of the right-of-way.
7.5 Any bridge or culvert shall be subject to the approval of the Board, in consultation with Town Road Agent or his designee. The design of said bridge or culvert shall be shown on the preliminary layout.
7.6 Approval of Roads – Street –Parks Playgrounds—etc. by the Planning Board does not signify acceptance by the Town. Acceptance can only be accomplished as per current state statutes.
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