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New Test Method for Determining the Drainage Efficiency of Engineered Polymeric Drainage and Ventilation Materials Used as Part of a Rainscreen Assembly
1. Scope
1. Scope 1.1 This test method determines the drainage efficiency of polymeric drainage and ventilation materials when subjected to a water spray rate in accordance with Test Method E 331. 1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parenthesis are for information only. 1.3 This standard may involve hazardous materials, operations and equipment. 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.
When ASTM E2925 was balloted and approve as a material specification, there were two test methods embedded in the standard (Annex A and Annex B). It was agreed during the voting process to split the test methods off and make them stand alone standards. This proposed new test method is to address this commitment and deals with Annex B of ASTM E2925. Once this test method is approved, a proposal will be made to E2925 to reference this test method rather than Annex B.
