More info
Description / Abstract:
This test method covers procedures for testing of precast
concrete pipe sections, prior to delivery, where maximum field
leakage rates are specified.
Tests described in this standard are intended to be used at the
point of manufacture of the concrete pipe and are not intended for
testing installed pipe (for field tests see Practices C924, C969,
and C1214). The user of this specification is advised that
individual or multiple pipe sections may be tested for the purpose
of testing the pipe barrel and additionally the joints in straight
alignment when multiple pipe sections are tested.
Test times are based on leakage rates and therefore are
proportional only to the pipe diameter and are constant for any
length of test pipe or pipeline.
Test times tabulated and the rate of air loss in this standard
are based on successful testing of installed pipelines. However,
since air and water have different physical properties, retests of
some pipelines not meeting field air tests have been successful
when tested with water. The leakage rates of 0.0017 CFM/ft2 and
0.0003 CFM/ft2, were determined empirically as the maximums for
pipe to meet the 50 and 200 gal/(in. of internal diameter) (mile of
sewer) (24h) test rates, respectively.
The values stated in inch-pound units are to be regarded as
standard. No other units of measurement are included in this
standard.
NOTE 1—The availability of this test procedure for concrete pipe
varies from location to location. Check with local supplier(s) for
availability and recommendations.
This standard does not purport to address all the safety
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish the appropriate safety
and health practices and to determine the applicability of
regulatory limitations prior to its use. See Section 6 for
specific safety precautions.