1. Streets shall be designed and constructed to such a condition that the streets are passable for vehicles which are intended to use such streets. The township shall not be required to accept such streets for public dedication until the streets meet such additional standards and specifications as the municipality may require for public dedication. No plat shall be finally approved until the streets shown on such plat have been improved to a mud-free or otherwise permanently passable condition.
2. All streets shall be graded to the full width of the cartway and the adjacent side slopes graded to blend with the natural lay of the land or in accordance with the cross-section presented, to the satisfaction of the Township Engineer. Where fill material is necessary to establish uniform grades, compacting shall be required in accordance with the standards established by the municipality concerned. A slope of two horizontal to one vertical foot beyond the right-of-way line shall be the maximum allowable slope.
3. Street cross-section for local and secondary streets shall be in accordance with the standards established in the municipality involved. Where alternatives are available, the Planning Commission may designate the cross-sections to be used on the advice of the Township Engineer. All details of the cross-section, crowns, curbs, pavement, sub-grade and roadside ditches, shall conform to the designated cross-section. Arterial street cross-sections shall conform to the designated cross-section. Arterial street cross-sections shall be as designated by the Township Engineer and approved by the Planning Commission (state approval required where necessary).
4. Curbing shall be concrete or of a bituminous mix, either straight, battered or rolled.
5. The requirement of curbs or curbs and gutters will vary in accordance with the character of the area and density of development involved.
A. Curbs shall ordinarily be required where:
(1) Streets are designed to serve areas in which the net residential density of the area surrounding the proposed subdivision equals or exceeds three families per acre;
(2) Lot frontages are less than 75 feet; and
(3) Commercial development or other similar intensive urban uses exist.
B. The Supervisors may require curbs and gutters to be installed on arterial, collector or local streets or on highways if such construction is deemed necessary for public safety, control of water runoff for clearly defined driving and parking areas.
6. Streets shall be constructed with eight-inch thick (rolled measurement) native stone, limestone or crushed slag properly graded and meeting the requirements of the current specifications of the Pennsylvania Department of Transportation and subject to its complete tests. Lesser base courses, to a minimum of six inches, may be authorized by the Township Supervisors on the advice of the Township Engineer on smaller streets where the character of the drainage of the subgrade, the size of the subdivision and nature of the traffic warrants.
7. A two and one-half inch bituminous plant mixed surface shall be placed on the prepared base to meet the requirements of the specifications of the Pennsylvania Department of Transportation. Where a six-inch base is authorized, a bituminous surface treatment in accordance with an AT-1 specification complying with the Pennsylvania Department of Transportation may be used.
8. Where concrete pavement is used, the standard requirements of the Pennsylvania Department of Transportation shall govern and all work shall be performed in the manner prescribed in the standard specifications for road construction of said Department, and shall be approved by the engineer. Local streets shall be at least six inches in thickness and conform to other specifications of the Pennsylvania Department of Transportation.
9. Either type of pavement listed above must be approved by the Township Supervisors before application. Said installation shall be under the direct supervision of the Township Engineer.
(Ord. 1983-3, passed 12-12-1983)