§ 16-631 ROADWAY CONSTRUCTION.
| |||||||
A. Roadways and all appurtenances, including subgrade, subbase, base courses and pavements, shall be constructed in accordance with the applicable requirements of the standard specifications as modified herein. All subsurface utilities including service connections (terminating at least two (2) feet behind sidewalk) to each lot and all storm drains shall be installed in all roadway areas prior to the construction of final pavement surfaces.
| |||||||
B. All roadways shall be constructed with either a bituminous concrete flexible pavement structure or a Portland cement concrete rigid pavement structure. Only one (1) type of pavement shall be utilized throughout any development.
| |||||||
C. The pavement structure design for each particular development utilizing either a flexible or rigid pavement type shall be the responsibility of the developer or his engineer.
| |||||||
1. The pavement design shall be based upon traffic loading projections and field sampling and laboratory analysis of the subgrade soils to be encountered in roadway areas in the development and shall follow current design recommendations of the Asphalt Institute, the Portland Cement Concrete Association or such other generally recognized standards as may be acceptable to the Township Engineer.
| |||||||
a. As minimum requirements, rigid Portland cement paving shall be expansion joint type paving utilizing joints similar to Type A expansion joints, according to the Standard Construction details of the New Jersey Department of Transportation.
| |||||||
b. Shall be reinforced, constructed with Class B air-entrained concrete and shall have a minimum thickness of six and one-half (6 1/2") inches for local, local collector, and minor collector streets and eight (8") inches for other classifications.
| |||||||
2. Flexible bituminous concrete pavements shall have an equivalent structural depth of at least ten (10") inches for local, local collector, and minor collector streets.
| |||||||
a. Having a minimum wearing surface of not less than one and one-half (1 1/2") inches of pavement, Type FABC-1, and a minimum bituminous stabilized base course of not less than two and one-half (2 1/2") inches and a dense graded aggregate base course to provide the remaining depth.
| |||||||
b. An equivalent structural depth of at least thirteen (13") inches for other street classifications, having a minimum wearing surface of not less than two (2") inches of pavement, Type FABC-1; a minimum bituminous stabilized base course of not less than three (3") inches, and a dense graded aggregate base to provide the remaining depth.
| |||||||
c. Bituminous stabilized base may be substituted for aggregate base on a one to three (1:3) ratio (stabilized base to aggregate base) all in accordance with the applicable requirements of the Standard Specifications.
| |||||||
D. All subgrade shall be prepared in accordance with the applicable requirements of the Standard Specifications for bituminous concrete and reinforced concrete pavements.
| |||||||
1. Prior to the construction of any subbase, base or pavement course, all soft or unyielding portions of the subgrade which do not attain the required stability will be removed and replaced with the suitable material, and the whole surface of the subgrade shall be compacted.
| |||||||
2. The provision of a uniform roadway subgrade meeting the requirements of the Standard Specifications shall be the full responsibility of the developer.
| |||||||
3. In certain cases, special treatment may be required because of the character or nature of the subsoil.
| |||||||
a. Such special treatment may include lime or cement stabilization, wet excavation, or construction of underdrainage fields.
| |||||||
b. Any proposal by the developer to stabilize subgrade shall be subject to the approval of the Township Engineer.
| |||||||
E. Where granular subbase courses are included in the pavement design section proposed by the developer, they shall be constructed in accordance with the applicable requirements of the Standard Specifications.
| |||||||
1. Bituminous concrete pavements (and stabilized bases) may be constructed on subgrade without subbase or aggregate base courses provided that the subgrade can be satisfactorily prepared as hereinbefore described.
| |||||||
2. Dense graded aggregate base courses shall comply with the requirements of the Standard Specifications for Soil Aggregate, Type 5, Class A, or Type 2, Class A or B.
| |||||||
3. Portland cement concrete pavements must be constructed with a minimum of six (6") inches of a granular type subbase meeting the requirements of the Standard Specifications for Soil Aggregate, Type 4, Class E.
| |||||||