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ASTM D7492/D7492M-16a(2024)

Current Reaffirmation

Standard Guide for Use of Drainage System Media with Waterproofing Systems

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1.1 This guide makes recommendations for the selection and application of prefabricated drainage media used in conjunction with waterproofing systems on horizontal and vertical surfaces. Drainage media considered include rigid and semi-rigid insulation boards and rigid materials including plastics. This guide considers drainage media as it relates to the performance of the waterproofing system, so its primary focus is draining water away from the membrane. This guide does not cover in detail other aspects or functions of drainage system performance such as efficiency of soil dewatering. The scope of this guide does not cover other drainage media including gravel and filter fabric systems that can be constructed. The scope of this guide does not cover drainage materials or drainage system designs used for vegetative roof systems. Vegetative roof systems require specialized designs.

1.2 The committee with jurisdiction over this standard is not aware of any other comparable standards published by other organizations.

1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


5.1 This guide provides information and guidelines for the selection and installation of drainage systems media that are in conjunction with waterproofing systems. This guide is intended to be used in conjunction with Guides C898/C898M, C981, C1471/C1471M, D5898/D5898M, and D6622/D6622M and to provide guidelines for the total waterproofing and drainage system.

SDO ASTM: ASTM International
Document Number D7492
Publication Date Jan. 1, 2024
Language en - English
Page Count 10
Revision Level 16a(2024)
Supercedes
Committee D08.22
Publish Date Document Id Type View
Dec. 1, 2016 D7492_D7492M-16A Revision
Feb. 1, 2016 D7492_D7492M-16 Revision
Nov. 15, 2011 D7492_D7492M-11 Revision
Jan. 1, 2024 D7492_D7492M-16AR24 Reaffirmation