标准摘要
[中文适用范围]： ISO 834 的这一部分规定了当样本尺寸足以证明小于全尺寸耐火炉的合理性时，确定非承重分隔元件在一面受热时的耐火性时应遵循的程序。 这种情况在运输应用中的分离元件测试中尤其常见，因为阻隔产品的最终使用尺寸通常小于 ISO 834 其他部分中规定的尺寸。 在以下情况下也会发现需要小于全尺寸电阻炉的样本尺寸：测试安装在分离元件中的元件，例如管道穿透系统、管道、阻尼器和电缆穿隔系统。 该测试不适用于评估幕墙（从楼板末端悬挂的非承重外墙）或包含门或玻璃的墙壁。 ISO 3008 涵盖了包含门的墙壁的测试； ISO 3009 涵盖了包含玻璃的墙壁的测试。 当结构符合 ISO 834 本部分中给出的直接应用领域或当其经受现场时，该测试应用于其他未经测试的结构形式是可接受的根据 ISO/TR 12470 进行扩展应用分析。 注：由于 ISO/TR 12470 仅给出一般准则，因此特定的扩展应用分析只能由耐火结构专家进行。 注意 — 请注意防火测试可能是危险的，并且测试过程中可能会产生有毒和/或有害的烟雾和气体。 在测试元件或结构的建造、测试和测试残留物的处理过程中也可能出现机械和操作危险。 应评估所有潜在的健康危害和风险，并确定和提供安全预防措施。 应发布书面安全说明。 应对相关人员进行适当的培训。 实验室人员应确保始终遵守书面安全说明。 [外文原描述]： ISO 834-12:2012 specifies the procedures to be followed for determining the fire resistance of non-load-bearing separating elements when exposed to heating on one face when the specimen size is such that a less than full scale fire resistance furnace is justified. This condition is particularly found in the testing of separating elements in transport applications since the end-use dimensions of the barrier products are often smaller than those specified in other parts of ISO 834. Specimen sizes requiring less than full size resistance furnaces are also found when testing elements to be fitted into a separating element, such as pipe penetration systems, ducts, dampers and cable transits. The test is not appropriate for the evaluation of curtain walls (non-load-bearing external walls suspended from the ends of floor slabs) or walls containing doors or glazing. Tests of walls containing doors are covered by ISO 3008; tests of walls containing glazing are covered by ISO 3009. The application of this test to other untested forms of construction is acceptable when the construction complies with the direct field of application as given in ISO 834-12:2012 or when it is subjected to a field of extended application analysis in accordance with ISO/TR 12470.
英文名称Fire resistance tests — Elements of building construction — Part 12: Specific requirements for separating elements evaluated on less than full scale furnaces