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AWWA C150/A21.50 Document Information:
Title
Thickness Design of Ductile-Iron Pipe
American Water Works Association
Publication Date:
Jun 8, 2008
Scope:
This standard describes the thickness design of ductile-iron
pipe complying with the requirements of ANSI*/AWWA C151/A21.51,
Ductile-Iron Pipe, Centrifugally Cast, for Water. Sec. 4.1 outlines
the design procedure, and Sec. 4.2 gives a design example. Sec. 4.3
explains the basis of design. As opposed to using procedures in
Sec. 4.1 or Sec. 4.3, the designer may reference Tables 12 through
14 directly.
Table 12 lists thicknesses for standard laying conditions and
certain depths of cover. Table 13 lists thicknesses for 150 psi–350
psi (1,034 kPa–2,413 kPa)† water working pressure.
The greater thickness from Table 12 or Table 13 for given trench
load or internal pressure should be used.
Table 14 lists working pressures and maximum depths of cover for
standard laying conditions and standard pressure classes. Table 15
lists special thickness classes of ductile-iron pipe.
Purpose
The purpose of this standard is to provide the minimum
requirements for the thickness design of ductile-iron pipe,
including basis of design and design procedure.
*American National Standards Institute, 25 West 43rd Street,
Fourth Floor, New York, NY 10036.
†Metric conversions given in this standard are direct
conversions of US customary units and are not those specified in
International Organization for Standardization (ISO) standards.
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