1.1 本规范涵盖带有玻璃纤维增强的预制改性沥青板材，其使用无规聚丙烯（APP）作为主要改性剂，并用作多层屋面和防水膜制造中的基础板材。 1.2 这只是材料规范。关于特定屋顶结构或应用技术的适用性的问题超出了本规范的范围。 1.3 用于描述本规范所涵盖板材特性的规定试验和性能限制旨在确定最低财产。现场屋顶系统设计标准，如耐火性、现场强度、抗冲击/穿刺性、材料兼容性、抗隆起性、现场涂覆涂层的需要等，都超出了本材料规范的范围。 1.4 以国际单位制或英寸磅单位表示的数值应单独视为标准值。 每个系统中规定的值可能不完全相等；因此，每个系统应独立使用。合并两个系统的值可能导致不符合标准。 1.5 以下预防性声明仅适用于测试方法部分，第节 8. 。 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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers prefabricated modified bituminous sheet materials with glass fiber reinforcement, which use atactic polypropylene (APP) as the primary modifier and which are intended for use as a base sheet in the fabrication of multiple ply roofing and waterproofing membranes. 1.2 This is a material specification only. Issues regarding the suitability of specific roof constructions or application techniques are beyond the scope of this specification. 1.3 The specified tests and property limits used to characterize the sheet materials covered by this specification are intended to establish minimum properties. In-place roof system design criteria, such as fire resistance, field strength, impact/puncture resistance, material compatibility, uplift resistance, the need for field applied coatings, and others, are factors beyond the scope of this material specification. 1.4 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 non-conformance with the standard. 1.5 The following precautionary statement pertains only to the test method portion, Section 8 , of this specification. 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. 1.6 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.