1.1 本指南对水平和垂直表面上与防水系统结合使用的预制排水介质的选择和应用提出了建议。考虑的排水介质包括刚性和半刚性隔热板以及包括塑料在内的刚性材料。本指南考虑了排水介质，因为它与防水系统的性能有关，因此其主要重点是将水从膜中排出。本指南未详细介绍排水系统性能的其他方面或功能，如土壤脱水效率。本指南的范围不包括其他排水介质，包括可建造的砾石和过滤网系统。 本指南的范围不包括用于植被屋顶系统的排水材料或排水系统设计。植被屋顶系统需要专门的设计。 1.2 对本标准具有管辖权的委员会不知道其他组织发布的任何其他可比标准。 1.3 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值可能不是完全相等的；因此，每个系统应独立使用。将两个系统的值结合起来可能会导致不符合标准。 1.4 本标准可能涉及危险材料、操作和设备。 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 本指南为排水系统介质的选择和安装提供了信息和指南，这些介质与防水系统相结合。本指南旨在与指南一起使用 C898/C898M , C981 , 1471/C1471M , D5898/D5898米 和 D6622/D6622M 并为整个防水和排水系统提供指南。

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. ====== Significance And Use ====== 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.