ASTM International - ASTM C118-11

Standard Specification for Concrete Pipe for Irrigation or Drainage

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Organization:	ASTM International
Publication Date:	1 September 2011
Status:	inactive
Page Count:	4

scope:

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 developedC118M; 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 Pipe^A

Internal Designated Diameter, in.	Thickness of Wall, T, in.	Working Pressure, ^B ft	Minimum Internal Hydrostatic Test Pressure, psi	Minimum Three-Edge-Bearing Load, lbf/linear ft
6	⁷/₈	30	50	1300
8	1	30	50	1350
10	1 ¹/₈	30	50	1400
12	1¼	25	45	1500
14	1 ³/₈	25	45	1600
15	1½	25	45	1650
16	1½	25	45	1700
18	1¾	25	45	1800
20	2	25	40	1850
21	2 ¹/₈	25	40	1900
24	2¼	25	40	2000

^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.

abstract:

This specification covers nonreinforced concrete pipe to be used for the conveyance of irrigation water with working pressures, including hydraulic transients and for use in drainage. The concrete... View More