1.1 本规范提供了试验方法和程序，以证明木质地板框架构件的防火性能等同于室内地板组件中使用的无保护2×10尺寸木材或同等尺寸结构复合木材（SCL）地板托梁。本规范适用于具有或不具有用于提高耐火性的处理或材料的地板框架构件，包括防火涂料、涂层或化学处理，包括机械连接或粘附的防火材料。它适用于任何木质住宅地板框架构件产品，包括但不限于预制木工字钢、开放式腹板木托梁以及带有木法兰和木或金属腹板构件的桁架。此外，火灾评估的具体要求- 包括与这些地板框架构件一起使用的电阻涂料、涂层或化学处理。 注1: 本规范提供了一种将地板框架构件的防火性能与未受保护的2×10尺寸木材或同等尺寸SCL地板托梁的基准性能进行比较的方法。它已成功地用于评估具有各种防火形式的预制木工字钢和木桁架的性能。虽然本规范的原则一般适用于所有地板框架构件，但本规范的制定并未考虑其他材料（如钢托梁或桁架）地板框架构件评估所需的额外要求或修改。 1.2 以英寸-磅单位表示的值应视为标准值。 括号中给出的值是对SI单位的数学转换，仅供参考，不被视为标准值。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。

1.1 This specification provides the test methodology and procedures to demonstrate that the fire performance of wood-based floor framing members is equivalent to unprotected 2 by 10 dimension lumber or equal-sized structural composite lumber (SCL) floor joists used in interior floor assemblies. This specification is applicable to floor framing members with or without applied treatments or materials used to increase fire resistance, including fire-resistive paints, coatings, or chemical treatments, and including mechanically attached or adhered fire protection materials. It is applicable to any wood-based residential floor framing member product including, but not limited to, prefabricated wood I-joists, open-web wood joists, and trusses with wood flanges and wood or metal web members. In addition, specific requirements for the evaluation of fire-resistive paints, coatings, or chemical treatments used with these floor framing members are included. Note 1: This specification provides a method of comparing the fire performance of floor framing members to benchmarked performance of unprotected 2 by 10 dimension lumber or equal-sized SCL floor joists. It has been successfully used to evaluate the performance of prefabricated wood I-joists and wood trusses with various forms of fire protection. While the principles of this specification are generally applicable to all floor framing members, the development of the specification did not consider additional requirements or modifications which may be necessary for the evaluation of floor framing members of other materials, such as steel joists or trusses. 1.2 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. 1.3 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. 1.4 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.