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Significance and Use
This is not a routine test. The values recorded are applicable only to the manhole being tested and at the time of testing.
1.1 This test method covers procedures for testing precast concrete manhole sections when using the vacuum test method to demonstrate the integrity of the installed materials and the construction procedures. This test method is used for testing concrete manhole sections utilizing mortar, mastic, or gasketed joints.
1.2 This test method is intended to be used as a preliminary test to enable the installer to demonstrate the condition of the concrete manholes prior to backfill. Users are hereby cautioned that misuse or misapplication of the test criteria contained herein can cause permanent damage to the system being tested.
Note 1—Vacuum test criteria presented in this test method are similar to those in general use. The test and criteria have been widely and successfully used in testing manholes.
Note 2—The user of this test method is advised that no correlation has been found between vacuum (air) and hydrostatic tests.
1.3 This test method is the companion to metric Test Method C1244M; therefore, no SI equivalents are shown in this test method.
1.4 This standard does not purport to address all of the safety problems, if any, 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C822 Terminology Relating to Concrete Pipe and Related Products
C924 Practice for Testing Concrete Pipe Sewer Lines by Low-Pressure Air Test Method
C969 Practice for Infiltration and Exfiltration Acceptance Testing of Installed Precast Concrete Pipe Sewer Lines
C1244M Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test Prior to Backfill (Metric)
ICS Number Code 23.040.50 (Pipes and fittings of other materials)
UNSPSC Code 30121714(Manhole box)