ASTM D5957-98(R2021) pdf free download

ASTM D5957-98(R2021) pdf free download.Standard Guide for Flood Testing Horizontal Waterproofing Installations
1. Scope
1.1 This guide provides the user with a method for testing the watertightness of waterproofing installations applied to horizontal surfaces having a slope not greater than 20 mm/m (2 % slope) ( 1 ⁄ 4 in. per ft). 1.2 This guide is intended for waterproofing installation on parking garages and plaza deck type applications over habit- able spaces or on elevated structures, but is not intended for use on building roofing systems. Applicable waterproofing mem- brane installations that may be tested using this guide are fully adhered or bonded sheet membranes, liquid or fluid-applied membranes, or loose-laid sheet membranes. 1.3 The procedures presented here are not intended for use on those waterproofing installation applications that are for long-term water storage or continuously submerged environments, such as swimming pools, fountains, tank liners with hydrostatic pressure, or water storage units (storage period greater than 48 h). 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 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 appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. 1.6 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
4. Summary of Guide
4.1 This guide uses a series of temporary containment assemblies of pond water on horizontal surfaces to determine the watertightness of waterproofing installations. 4.2 The area to be tested is subdivided as required by the containment assemblies, and drains within the subdivided area are temporarily blocked to prevent water leakage into the drainage system. 4.3 Water is ponded in the subdivided area and maintained for a minimum period of 24 h. The space below the test location is monitored for leakage during the test period.
5. Significance and Use
5.1 This guide describes the techniques used to test for watertightness of waterproofing installations on horizontal services having a slope not greater than 20 mm/m (2 % slope) ( 1 ⁄ 4 in./ft). See also ACI 515.5.2 The structural capacity of the substrate to which the waterproofing system is to be installed should be reviewed by a licensed structural engineer to verify that the loads associated with the use of procedures described in this guide do not exceed code and design restrictions. Lateral loads will be imposed on curbs or walls used for containment of the water during the test procedures and their effect should be accounted for. The effects of equipment, planters, or other movable objects present within the test area should be considered. N OTE 1—Potable water weighs approximately 1000 kg/cubic m (62.3 lb per cubic ft) at 22 °C (71.6 °F) or 1 g/cm 2 /cm depth (5.19 lb/ft 2 per in. depth). 5.3 This guide describes a procedure to test for watertight- ness of waterproofing installations under ponded water with a short-term hydrostatic head measuring not more than 100 mm (4 in.). N OTE 2—Increasing the amount of water forming a hydrostatic head beyond 100 mm (4 in.) of water may be considered provided the impact of increased loads on the substrate has been reviewed and approved by a licensed structural engineer. 5.4 For the purposes of this guide, the installation of the waterproofing membrane and flashing should be completed and the materials fully cured. Manufacturers should specify a minimum time period for materials to cure prior to performing flood test, however, no testing should be performed during the first 24 h following installation of system materials (48 h min if materials are installed at a time when ambient temperatures are below 10 °C (50 °F)). 5.5 The additional loads imposed upon the structure during the test period will affect the deflection of structural items. The effects shall be analyzed by a licensed structural engineer prior to placement of additional loads. Critical locations shall be monitored during the duration of the test period.