Standard Test Method for Low-Pressure Air Test of Vitrified Clay Pipe Lines
1.1 This test method defines procedures for testing vitrified clay pipe lines, using low-pressure air, to demonstrate the structural integrity of the installed line. Refer to Practice C12.
1.2 This test method shall be performed on lines after connection laterals, if any, have been plugged and braced adequately to withstand the test pressure, and after the trenches have been backfilled for a sufficient time to generate a significant portion of the ultimate trench load on the pipe line. The time between completion of the backfill operation and low-pressure air testing shall be determined by the approving authority.
1.3 This test method may also be used as a preliminary test, which enables the installer to demonstrate the condition of the line prior to backfill and further construction activities.
1.4 This test method is suitable for testing gravity-flow sewer pipe constructed of vitrified clay or combinations of clay and other pipe materials.
1.5 Terminology C896 is to be used for clarification of terminology in this test method.
1.6 The values stated in inch-pound units are to be regarded as the standard.
1.7 This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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