1.1 本规范涵盖了用作土工泡沫的硬质多孔聚苯乙烯的类型、物理性能和尺寸。 1.2 本规范不包括硬质多孔聚苯乙烯土工泡沫正确安装和性能的布局、放置和工艺。 1.3 本规范涵盖的硬质多孔聚苯乙烯土工泡沫可能需要保护，免受某些化学品、环境暴露和集中荷载的影响。其他设计考虑因素可能包括导热性和浮力。 关于这些最终用途注意事项的指南包含在 附录X1 . 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不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.5 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。 1.6 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《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 types, physical properties, and dimensions of rigid cellular polystyrene intended for use as geofoam. 1.2 This specification does not cover the layout, placement, and workmanship for proper installation and performance of rigid cellular polystyrene geofoam. 1.3 Rigid cellular polystyrene geofoam covered by this specification may need protection from certain chemicals, environmental exposure, and concentrated loads. Additional design considerations may include thermal conductivity and buoyancy. Guidelines regarding these end-use considerations are included in Appendix X1 . 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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 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 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.