1.1 本规程包括安装板式垫层的建议，包括可安装弹性地板的木基、纤维增强石膏和纤维水泥板垫层/底层地板组件。 1.2 底层地板组件的结构完整性受当地建筑规范管辖。 1.3 本规程不会以任何方式取代弹性地板、底层或粘合剂制造商的书面说明。有关具体建议，请咨询各个弹性地板、底层或粘合剂制造商。制造商的说明取代了本规程中的建议。 1.4 请参阅已提供的“选择警告”的补充要求。 1.5 以英寸表示的值- 磅单位应视为标准单位。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。 ====意义和用途====== 4.1 本规程提供了适用于铺设弹性地板覆盖物的木基、纤维增强石膏和纤维水泥板垫层的安装和制备的最低建议。所用材料、混合物和其他细节的实际要求通常包含在项目计划或规范细节中，可能与本实践中规定的最低建议不同。

1.1 This practice includes recommendations for the installation of panel type underlayments including wood based, fiber reinforced gypsum and fiber-cement panel underlayment/subfloor assemblies upon which resilient flooring may be installed. 1.2 The structural integrity of subfloor assemblies is governed by local building codes. 1.3 This practice does not supersede in any manner the resilient flooring, underlayment or adhesive manufacturer's written instructions. Consult the individual resilient flooring, underlayment or adhesive manufacturer for specific recommendations. Manufacturer's instructions supercede the recommendations included in this practice. 1.4 See Supplementary Requirements for “Select Warnings” that have been provided. 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. ====== Significance And Use ====== 4.1 This practice provides minimum recommendations for the installation and preparation of wood-based, fiber-reinforced gypsum and fiber-cement panel underlayments suitable to receive resilient floor coverings. Actual requirements for materials to be used, mixtures, and other details are generally included as part of project plans or specification detail and may vary from the minimum recommendations set forth in this practice.