[Amended 11-6-2001 by Ord. No. 21-2001; 2-16-2021 by Ord. No. 2021-03]
A. 
Materials.
(1) 
Reinforced concrete pipe. Reinforced concrete pipe shall conform to the requirements of the American Society for Testing Materials Specification C-76, as amended and revised to date. Reinforced concrete pipe shall be Class 3, Wall B, except that reinforced concrete pipe with less than two feet of cover shall be Class 4, Wall B.
(2) 
Corrugated metal pipe. Corrugated metal pipe shall be permitted only by specific written approval of the Township Engineer.
(a) 
Corrugated metal pipe and pipe arch shall conform to the requirements of the American Association of State Highway Officials specifications therefore, as amended and revised to date, and conform to the following gauge requirements:
Diameter
(inches)
Gauge
Aluminum
Corrugated Metal
15
14
16
18
12
16
21
12
16
24
12
14
30
12
14
36
10
12
42
10
12
48
10
10
54
8
10
60
8
8
(b) 
For pipe diameters in excess of 60 inches, the specific design shall be approved by the Township Engineer.
(c) 
Corrugated metal pipe and pipe arch shall be in accordance with Article 909.02.06 and fully lined with asphalt material coated inside and outside in accordance with current American Association of State Highway Officials (AASHTO) M190 and/or American Society for Testing and Materials (ASTM) A849 Specifications, as applicable, and shall have asphalt material inverts. The asphalt material shall fill the valleys of the corrugations and cover the crests of the corrugations a minimum of 1/8 inch. For round pipe, the invert material shall cover not less than 25% of the inside perimeter of the pipe, and for pipe arch, the invert material shall cover not less than 40% of the inside perimeter of the pipe.
(3) 
Concrete: minimum 4,000-psi concrete conforming to the requirements set forth elsewhere herein shall be used for the construction of concrete cradles and in making connections to existing drainage structures.
(4) 
High density polyethylene pipe (HDPE). Material in accordance with Article 909.02.02.
(5) 
Plastic drainage pipe. Material in accordance with Article 909.02.03.
B. 
Methods of construction shall be in accordance with Article 601.03 and as generally outlined below: Should a conflict arise between Article 601.03 and the construction outlined below, the contractor shall notify the Township Engineer in writing and request a determination.
(1) 
Excavation and backfill. Excavation and backfill shall conform to the requirements for subsurface structure excavation. The contractor shall provide adequate equipment and so operate it as to maintain an essentially dry excavation, stable trench bottoms, suitable working conditions and protection from water damage throughout and until the completion of the work.
(2) 
Pipe shall be laid in straight lines between drainage structures except when otherwise specifically provided. When deviation from a straight line is permitted, the deflection of each joint shall not exceed the manufacturer's recommended maximum for the type of joint and size of pipe being installed. All pipe shall be laid to uniform grades. Each section of pipe shall be solidly bedded in the trench bottom and shall be supported for its full length except where excess excavation has been made for joints. Before making each joint, the ends of the pipes and all joint members shall be thoroughly cleaned. All jointing shall be done in strict accordance with the manufacturer's recommendations. Joints of tongue and groove pipe shall be filled with mortar around their entire circumference. Mortar shall be 1:2 parts cement to sand.
(a) 
No defective or leaking pipe, joints, connections, manholes, inlets or other parts of the work will be acceptable. All visible leakage of any description and no matter where located shall be corrected by the contractor in a manner satisfactory to the engineer.
(b) 
Except when necessary to maintain a flow, storm drains shall not be placed in embankment until the embankment has been constructed and consolidated to proposed finished grade or subgrade, or to an elevation not less than three feet above the proposed top of pipe, whichever is lower. After an embankment has been so constructed, trenches for storm drainage shall be excavated as herein above specified.
(3) 
Flushing of storm drains. The contractor shall flush such newly completed storm drains as designated by the engineer in order to remove any foreign matter which may have accumulated therein during construction. The contractor shall furnish all labor, material, equipment and water necessary for flushing and shall provide for the disposal of water used for flushing.
(4) 
Existing pipes and structures. The locations of existing pipes and structures shown on the plans are approximate, and before construction the contractor shall determine the exact locations of all existing pipes and structures in the vicinity of the proposed work. Connections to existing pipes and structures shall be made in a manner satisfactory to the engineer.
A. 
Materials. Materials for underdrains shall conform to the New Jersey Department of Transportation Standard Specifications, latest edition available here: https://www.state.nj.us/transportation/eng/specs/ as designated below:
(1) 
Pipe and fittings: Article 909.02;
(2) 
Coarse aggregate (broken stone or washed gravel): Article 901.03;
(3) 
Cast-iron soil pipe for cleanout: Cast Iron Soil Pipe Institute Specifications 301 and/or ASTM A74-20;
(4) 
Mortar: one part cement to two parts sand.
B. 
Methods of construction. All construction shall be governed by Article 601.03.04 of the New Jersey Department of Transportation Standard Specifications.
A. 
Materials. Materials for retention basins shall conform to the New Jersey Department of Transportation Standard Specifications as designated below:
(1) 
Embankment. Material obtained from project excavation, free from weeds, roots, stumps, pavement, concrete or other debris;
(2) 
Sod: Articles 808.03.01 and 917.07;
(3) 
Concrete for drainage swale (if required): 4,000 psi at 28 days air-entrained concrete;
(4) 
Riprap: six-inch stone for relief swale and headwalls.
B. 
Methods of construction. All construction shall be governed by the New Jersey Department of Transportation Standard Specifications except as otherwise permitted by the engineer.
A. 
Materials.
(1) 
Concrete. Concrete shall conform to the requirements specified elsewhere herein.
(2) 
Concrete block, brick, clay or shale, mortar, and castings (gray iron) shall conform to the appropriate subsection(s) of Article 910 of the New Jersey Department of Transportation Standard Specifications, latest edition.
(3) 
Ladder rungs. Article 909.03.6.
B. 
Method of construction shall be in accordance with the applicable subsection(s) of Article 602.03 in the NJDOT Standard Specifications.
In the case of a development storm sewer pipe system, which is to be dedicated to the Township, the developer shall:
A. 
Employ a video inspection service to obtain closed circuit color television examination of interior of each and every pipe system and provide a color video record of the examination to the Township Engineer. The video inspection service provided and the format of the recording shall be as approved by the Township Engineer.
B. 
Prepare as-constructed plans and submit two sets to the administrative officer and send a copy to the Township Engineer.