EI 11C201
CEMP-E
1 March 1997
completed installation must be tested for diameter deflection.
(1) PVC sewer pipe is available in diameters 100 mm (4-inch) through 1,200 mm
(48-inch), and in laying lengths of 3 to 6 meters (10 to 20 feet). Pipe dimensions comply with the
standard dimension ratio (SDR) system, which means that mechanical properties are constant
without regard to pipe sizes. Joints are integral bell and spigot type, and utilize elastomeric
gaskets.
(2) PVC pressure pipe is available in diameters 40 mm (1/2-inch) through 300 mm (12-
inch), and with screw, push-on, or solvent weld joints.
(3) For added strength against deflection, profile wall pipe is available in sizes from 100
to 1,200 mm (4 to 48 inches). Profile wall gravity sewer pipe has smooth interior walls and is
braced circumferentially or spirally with outside projections. When the projections are exposed,
such as ribbed pipe, the pipe is referred to as open profile wall pipe and when covered with a
continuous layer of PVC, the pipe is closed profile pipe. The bell and spigot joints use an
elastomeric gasket for water tightness.
(4) PVC corrugated sewer pipe with a smooth interior is available is sizes from 100 to
900 mm (4 to 36 inches) and also provides additional strength against deflection.
(5) PVC composite sewer pipe is manufactured in sizes from 8 to 15 inches in diameter
and can be used for gravity sewers or force mains. It consists of two layers or tubes of PVC
integrally connected with bracing. The space between the layers is filled with portland cement of
other inert filler to provide continuous support between the tubes. This construction allows it to
resist deflection better than standard PVC pipe. Joints can be solvent cement or elastomeric
gasket.
h. Acrylinitrile butadiene-styrene (ABS). ABS pipe is light in weight, and resists attack by
acids, alkalies and biological growths. Manufacturers' design and installation manuals will be
used for selecting pipe embedment, backfill and compaction requirements.
(1) ABS composite plastic pipe. ABS composite pipe consists of two concentric
thermoplastic tubes integrally connected across the annulus by a truss--like bracing. The annular
void space is filled with portland cement concrete, or other suitable material, to form a bond
between the inner and outer tubes. It is termed a "semi-rigid" pipe because it resists deflection
better than most other plastics. ABS composite pipe is available in diameters 200 mm (8-inch) to
380 mm (15-inch), and in one laying length of 3.8 meters (12.5 feet). All joints are the solvent
cement type using joints or fittings which may be factory installed or furnished loose.
(2) ABS solid wall plastic pipe. ABS solid wall plastic pipe, commonly referred to as ABS
sewer pipe, is manufactured from the same compounds as composite pipe, however the pipe
wall is of one solid material. The pipe is available in diameters 80 mm (3-inch) through 300 mm
(12-inch), and is used for nonpressure sewers. It does not match the stiffness of composite pipe.
ABS sewer pipe is joined by either socket type molded fittings, which are solvent fused to the
pipe, or by elastomeric gasket joints.
i. Polyethylene (PE). PE pipe is manufactured based on controlled outside diameters or
inside diameters, depending on the types of connections needed. It can be used for pressure or
gravity applications. Jointing using heat fusion shall be in accordance with ASTM D 2657 and
with a manufacturer's certified field representative present. Corrugated PE pipe with a smooth
8-4
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