ISO 834的本部分规定了在以下情况下确定梁耐火性所需遵循的程序: 自行测试。 梁通常在其底面和两个垂直面完全暴露于加热的情况下进行测试。然而，当 曝光是从四面或少于三面进行的，需要适当的曝光条件。梁 是地板结构的一部分，按照ISO 834-5中所述的地板结构进行测试，并遵守 完整性和绝缘性评估。 当结构符合要求时，可将本试验应用于其他未经测试的结构形式 适用于ISO 834本部分中给出的直接应用领域，或适用于扩展应用时 根据ISO/TR 12470进行分析。由于ISO/TR 12470只给出了一般性指南，具体的 应用分析只能由火灾专家进行- 抗腐蚀结构。 本试验方法的一般指南见附录A。

This part of ISO 834 specifies the procedures to be followed for determining the fire resistance of beams, when tested on their own. Beams are normally tested with their underside and two vertical sides fully exposed to heating. However, when the exposure is from four sides or less than three sides, appropriate exposure conditions are necessary. Beams which are part of a floor construction are tested with the floor construction as described in ISO 834-5 and are subject to evaluation of integrity and insulation. 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 this part of ISO 834 or when subjected to an extended application analysis in accordance with ISO/TR 12470. Since ISO/TR 12470 gives only general guidelines, specific extended application analyses are to be performed only by persons expert in fire-resistant constructions. General guidance on this test method is given in annex A.