1.1本规范涵盖了由作为主要聚合物的聚氯乙烯树脂制成的柔性板，用于暴露在天气中的单层屋顶膜。板材应包含增强纤维或增强织物。 1.2用于表征板材特性的试验和性能极限值旨在确保达到预期目的的最低质量。现场屋顶系统设计标准，如耐火性、材料兼容性、抗风拔力、现场收缩等，是必须考虑的因素，但不在本规范的范围内。 1.3以国际单位制表示的数值应视为标准。括号中的数值仅供参考。 1.4本标准可能涉及危险材料、操作和设备。本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This specification covers flexible sheet made from poly(vinyl chloride) resin as the primary polymer intended for use in single-ply roofing membranes exposed to the weather. The sheet shall contain reinforcing fibers or reinforcing fabrics. 1.2 The tests and property limits used to characterize the sheet are values intended to ensure minimum quality for the intended purpose. In-place roof system design criteria, such as fire resistance, material compatibility, wind uplift resistance, in-situ shrinkage, among others, are factors that must be considered but are beyond the scope of this specification. 1.3 The values stated in SI units are to be regarded as the standard. The values stated in parentheses are for information only. 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 and health practices and determine the applicability of regulatory limitation prior to use.