Section 4146. Plastic Pipe.

4146.01 DESCRIPTION.
All plastic pipe shall be marked as required by the specification noted and be of the diameter specified. Plastic pipe shall be manufactured from polyethylene, polyvinyl chloride or Acrylonitrile-Butadiene-Styrene material. All pipe and fittings for an interconnected installation shall be of the same type of material except for connection to an existing pipe, be of the size specified and meet one of the specifications allowed by this section.

Approval and acceptance will be based on sampling and testing or on the Producer's certification subject to monitor testing as provided in Materials I.M. 443 and Materials I.M. 446.

4146.02 CORRUGATED POLYETHYLENE PIPE.
Pipe and fittings shall be a maximum diameter of 48 inches (1.2 m) meeting the requirements of AASHTO M 294. When perforated pipe is specified, the perforations shall be in accordance with AASHTO M 294 except circular perforations will not be allowed on 12 inch (300 mm) I.D. pipe. On perforated pipe larger than 12 inch (300 mm) I.D., the pipe shall be wrapped with engineering fabric meeting the requirements of Article 4196.01, B.

Aprons or other special end sections may also be specified. Aprons and special end sections shall be as for corrugated steel culverts, meeting requirements of Section 4141. They shall be adapted to couple to the sections of polyethylene pipe. When end sections are not specified, the ends of polyethylene culverts to be exposed in the finished structure shall have coupling fittings attached to form a double thickness of polyethylene for the full length of the fitting.

4146.03 POLYETHYLENE (PE) SEWER PIPE.
Pipe and fittings shall meet one of the following specifications for the size required:

Size Specification
12 to 48 inch (305 to 915 mm)
18 to 48 inch (455 to 1220 mm)		 AASHTO M 294 Type S
ASTM F 894 type and with a minimum ring stiffness constant of 160

4146.04 POLYVINYL CHLORIDE (PVC) SEWER PIPE.
Pipe and fittings shall meet one of the following ASTM specifications for the size required:

  Corrugated with Smooth Interior Smooth Wall Underdrain Type PSM SDR 35 ABS & PVC Composite Large Diameter Plastic, Gravity Profile, Gravity
Nominal Size
in. (mm)		 ASTM F 949
(Avg. I.D.)
in. (mm)		 ASTM F 758** (Avg. O.D.)
in. (mm)		 ASTM D 3034 (Avg. I.D.)
in. (mm)		 ASTM D 2680 (Min. I.D.)
in. (mm)		 ASTM F 679**
(Avg. O.D.)
in. (mm)		 ASTM F 794 (Min. I.D.)
in. (mm)
4 (100) 3.950 (100.3) 4.215 (107.06)       3.949 (100.30)
6 (150) 5.909 (150.1) 6.275 (159.38) 5.893 (149.68) 5.75 (146)   5.875 (149.20)
8 (200) 7.881 (200.2) 8.400 (213.36) 7.891 (200.43) 7.75 (197)   7.867 (199.80)
10 (250) 9.846 (250.1)   9.864 (250.54) 9.75 (248)   9.834 (249.80)
12 (300) 11.715 (297.6)   11.737 (298.12) 11.75 (298)   11.702 (297.20)
15 (300) 14.338 (364.2)   14.374 (365.10) 14.75 (375)   14.329 (363.90)
18 (450) 17.552 (445.8)       18.701 (475) 17.595 (446.91)
21 (525) 20.705       22.047 (560) 20.690 (525.53)
24 (600) 23.460       24.803 (630) 23.430 (595.12)
27 (675) 26.440       27.953 (710) 26.420 (671.01)
30 (750) 29.469       31.496 (800) 29.410 (747.01)
33 (825)         35.433 (900) 32.405 (823.09)
36 (900) 35.475       39.370 (1000) 35.395 (899.03)
39 (975)           38.385 (974.98)
42 (1050)           41.375 (1050.93)
45 (1125)           44.370 (1127.00)
48 (1200)           47.360 (1202.94)
** ASTM lists the outside diameter and notes subtracting pipe wall thickness to find the inside diameter.

4146.05 ACRYLONITRILE-BUTADINE-STYRENE (ABS) SEWER PIPE.
Pipe and fittings shall be a maximum diameter of 12 inches (305 mm) meeting the requirements of ASTM D 2751 with a minimum Standard Dimension Ratio (SDR) of 35.