AWWA C301 Prestressed Concrete Pressure Pipe, Steel-Cylinder Type
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AWWA C301 Document Information:
Title
Prestressed Concrete Pressure Pipe, Steel-Cylinder Type
American Water Works Association
Publication Date:
Jan 21, 2007
Scope:
This standard describes the manufacture of circumferentially
prestressed concrete pressure pipe with a steel cylinder and wire
reinforcement in sizes 16 in. (410 mm) through 144 in. (3,660 mm).
Larger sizes have been manufactured based on the concepts presented
in this standard. The standard describes two types of prestressed
pipe: (1) lined-cylinder pipe with a core composed of a steel
cylinder lined with concrete and subsequently wire-wrapped and
coated with premixed mortar, and (2) embedded-cylinder pipe with a
core composed of a steel cylinder encased in concrete and
subsequently wire wrapped and coated with premixed cement mortar.
The design of prestressed concrete pipe is not presented in this
standard but is the subject of ANSI/AWWA C304, Design of
Prestressed Concrete Cylinder Pipe. ANSI/ AWWA C301 also does not
include requirements for handling, delivering, laying, field
testing, or disinfecting of pipe. See AWWA Manual M9, Concrete
Pressure Pipe, for this information.
Essential requirements. The pipe shall have the
following principal features: a welded steel cylinder with steel
joint rings welded to its ends; for lined-cylinder pipe, a core
consisting of a lining of concrete within the steel cylinder, or
for embedded-cylinder pipe, a core consisting of the steel cylinder
encased in concrete; reinforcement consisting of high-tensile wire
wound around the outside of the core in one or more layers at a
predetermined stress and fastened securely at its ends; a coating
of dense mortar covering the core and wire, except for the
necessarily exposed surfaces of the joint rings; and a
self-centering joint with a preformed gasket of rubber, designed so
that the joint will be watertight under all conditions of service.
Lined-cylinder pipe shall be used for pipe sizes up to and
including 20 in. (510 mm) and may be used for pipe sizes up to and
including 60 in. (1,520 mm). Embedded-cylinder pipe may be used for
pipe sizes 24 in. (610 mm) through 60 in. (1,520 mm) and shall be
used for larger pipe. For embedded-cylinder pipe, at least one
third of the total core thickness shall be outside the
cylinder.
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