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About This Item

 

Full Description

1.1 This specification covers nonreinforced concrete pipe to be used for the conveyance of irrigation water with working pressures, including hydraulic transients, as shown in Table 1 and for use in drainage.

1.2 A complete SI companion to Specification C118 has been developed-C118M; therefore, no SI equivalents are presented in this specification.

Note 1 - This specification is for manufacturing and purchase only and does not include requirements for bedding, backfill, installation, or field repairs. The owner is cautioned that he must correlate field conditions with the characteristics of the pipe specified and provide inspection during installation.

TABLE 1 Standard Dimensions, Working Pressure, and Test Requirements for Standard Concrete Irrigation PipeA

Internal Designated Diameter, in.Thickness
of Wall,
T, in.
Working
Pressure,B
ft
Minimum Internal Hydrostatic Test Pressure, psiMinimum
Three-Edge-Bearing
Load, lbf/linear ft
67/830501300
813050 1350
10 11/830501400
12 1¼25451500
14 1³/825451600
15 1½25451650
16 1½25451700
18 1¾25451800
20 225401850
21 21/825401900
24 2¼25402000

A For hydrostatic test requirements, refer to 10.5.

B Higher working pressures are not prohibited up to a maximum of 40 ft for 6 through 8-in. diameters, 35 ft for 10 through 12-in. diameters, and 30 ft. for 14-in. through 24-in. diameters. In these cases, the strength of the pipe shall be increased to give a minimum of at least four times the design working pressure when tested as specified in 10.5.

 

Document History

  1. ASTM C118-19


    Standard Specification for Concrete Pipe for Irrigation or Drainage

    • Most Recent
  2. ASTM C118-15


    Standard Specification for Concrete Pipe for Irrigation or Drainage

    • Historical Version
  3. ASTM C118-11

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    viewing


    Standard Specification for Concrete Pipe for Irrigation or Drainage

    • Historical Version
  4. ASTM C118-05a


    Standard Specification for Concrete Pipe for Irrigation or Drainage

    • Historical Version
  5. ASTM C118-05


    Standard Specification for Concrete Pipe for Irrigation or Drainage

    • Historical Version
  6. ASTM C118-03


    Standard Specification for Concrete Pipe for Irrigation or Drainage

    • Historical Version