本文件解释了确定耐火试验结果对实际应用的适用性的方法。 它适用于那些有基于ISO的ISO标准测试程序的承重和简单的垂直和水平分离元件？834系列，用于确定拟用于特定建筑或仅用于一般用途的结构的代表性样品的耐火性。这些要素是: —？承载元件； —？非承重元件: —？分区: —？螺柱结构隔板； —？复合板/SIPS隔板； —？天花板膜（水平隔断）: —？接缝天花板； —？复合板天花板。 测试结果的直接和扩展应用是确保改性元件具有获得与原始测试样品相同防火等级的可接受概率的两种可能方法。在这两种情况下，这些应用通常仅指如果建筑元件或其代表性样品根据参考测试中使用的标准防火测试条件在熔炉中进行测试，则建筑元件可以预期达到的防火等级。 最常见的变化之一是关于使用中的元件的尺寸。耐火性测试炉有尺寸限制，因此，当安装在最终建筑中时，根据标准方法测试的建筑元件获得的结果将以类似的方式表现，几乎没有信心。 本文件不提供关于门窗组件、线性间隙或维修穿透密封件测试结果的应用和扩展的指导，这些都包含在ISO/TR？12470-2. 对于一些（但不是所有）关键参数，可能影响的总结包含在给定的示例中。

This document explains a methodology to determine the applicability of the results of fire resistance tests to actual applications. It is applicable to those loadbearing and simple vertical and horizontal separating elements for which there is an ISO standard test procedure based upon the ISO？834 series for determining the fire resistance of a representative sample of the construction proposed for use in a specific building or just for general use. These elements are: —？loadbearing elements; —？non-loadbearing elements:

—？partitions:

—？stud construction partitions;

—？composite panel/SIPS partitions;

—？ceiling membranes (horizontal partitions):

—？jointed ceilings;

—？composite panel ceilings. Direct and extended applications of test results are the two possible ways to ensure that a modified element has an acceptable probability of obtaining the same fire rating as that of the original tested specimen. In both cases, these applications generally refer only to the fire rating that the building element can expect to reach if it, or a representative sample of it, were to be tested in a furnace according to the standard fire test conditions used in the reference test. One of the most common variations is in respect of the size of the element in use. Fire resistance testing furnaces have size restrictions and as a consequence, there is little confidence that the result obtained on an element of construction tested in accordance with the standard methods will behave in a similar manner when installed in the final building. This document does not provide guidance on the application and extension of results arising from testing carried out on door and window assemblies, linear gaps or service penetration seals, which is covered in ISO/TR？12470-2. For some, but not all of the critical parameters, a summary of the possible influences is incorporated in the given examples.