1.1 This practice describes standard procedures for using electrical conductance measurement methods to locate leaks in exposed or covered waterproof membranes. 1.2 This practice addresses the need for a systematic procedure to test, verify, and monitor the integrity of waterproof membranes. 1.3 This practice is not intended to replace visual inspection by a certified roof inspector. It is to be used in conjunction with roof inspection when specified. 1.4 This practice requires that the leak location equipment, procedures, and survey parameters used are certified to meet established minimum leak detection sensitivity. The leak detection sensitivity calibration is to be verified and certified against calibrated standards on a regular basis. 1.5 Leak location surveys can be used on waterproofing membranes installed in roofs, plaza decks, pools, water features, covered reservoirs, landfills, landfill caps, and other containment facilities. 1.6 The procedures are applicable for membranes made of materials such as polyethylene, polypropylene, polyvinyl chloride, bituminous material, and numerous other electrical insulating materials. 1.7 This standard does not purport to address all of the safety concerns, 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.
Electronic leak detection is an emerging practice in the construction industry. Those involved in waterproofing will benefit from the establishment of a concensus practice for performing this type of investigation.
Keywordswaterproofing; nondestructive testing; leak testing
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Ballot Item Approved as D7877-2014 and Pending Publication