1.1 本规范涵盖了工厂和现场应用中制造成无加强PVC土工膜的接缝的最小值。 1.2 本规范涵盖厚度为0.25至1.52 mm（0.010至0.060 in.）的PVC土工膜。 1.3 除结构特征外，规范人还应评估本规范范围外影响最终施工选择的其他特征。这些因素包括但不限于功能、法律、保险和经济因素。 1.4 本规范无意排除参考文件未涵盖的产品或系统。 1.5 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.6 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、健康和环境实践，并确定监管限制的适用性。 1.7 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《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers the minimum values for seams fabricated into unreinforced PVC geomembranes in factory and field applications. 1.2 This specification covers PVC geomembranes in thickness of 0.25 through 1.52 mm (0.010 through 0.060 in.). 1.3 In addition to structural characteristics, the specifier shall evaluate other characteristics beyond the scope of this specification that affect the final choice of construction. These include, but are not limited to, functional, legal, insurance, and economic considerations. 1.4 This specification is not intended to exclude products or systems not covered by the referenced documents. 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 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. 1.7 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.