1.1本耐火试验响应标准涵盖在规定的实验室条件下测定建筑材料的燃烧特性。它不适用于层压或涂层材料。 1.2本试验方法参考了提供解释信息的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应视为本试验方法的要求。 1.3以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.4 本标准用于测量和描述材料、产品或组件在受控条件下对热量和火焰的响应，但其本身并不包含火灾所需的所有因素- 实际火灾条件下材料、产品或组件的危险或火灾风险评估。 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 虽然没有复制实际的建筑火灾暴露条件，但本试验方法将有助于指示那些不起助于燃烧或向环境火灾中添加可观热量的材料。 通过测试的材料允许有限制的燃烧和其他燃烧迹象。

1.1 This fire-test-response standard covers the determination under specified laboratory conditions of combustion characteristics of building materials. It is not intended to apply to laminated or coated materials. 1.2 This test method references notes and footnotes that provide explanatory information. These notes and footnotes, excluding those in tables and figures, shall not be considered as requirements of this test method. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire-hazard or fire-risk assessment of the materials, products, or assemblies under actual fire conditions. 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== While actual building fire exposure conditions are not duplicated, this test method will assist in indicating those materials which do not act to aid combustion or add appreciable heat to an ambient fire. Materials passing the test are permitted limited flaming and other indications of combustion.