1.1 本试验方法包括在室外表面和暴露边缘同时施加水且室外表面的均匀静态空气压力高于室内表面的压力时，测定外窗、幕墙、天窗和门的抗渗水性。 1.2 本试验方法适用于任何幕墙区域，或仅适用于窗户、天窗或门。 1.3 本试验方法解决了制造组件的渗水问题。渗透组件但不会导致此处定义的故障的水可能会对所含材料（如密封剂和绝缘或夹层玻璃）的性能产生不利影响。该测试方法不能解决这些问题。 1.4 正确使用该测试方法需要了解压力测量原理。 1.5 以国际单位制表示的值应视为标准值。SI单位后括号中给出的值仅供参考，不视为标准值。 1.6 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。 有关具体危险说明，请参见 7.1 . 1.7 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。 =====意义和用途====== 5.1 该试验方法是在均匀静态气压差下测定水渗透阻力的标准程序。作用在建筑围护结构上的空气压力差变化很大。在指定要使用的试验压差之前，应充分考虑这些因素。 注1: 在应用本试验方法的试验结果时，应注意墙壁或其部件的性能，或两者的性能，可能是正确安装和调整的函数。在使用中，性能还将取决于支撑结构的刚度，以及部件对各种原因、振动、热膨胀和收缩等造成的劣化的抵抗力。很难模拟在使用中遇到的相同的复杂潮湿条件，例如大风- 吹出的水滴，随着风速的增加而增加的水滴冲击压力，以及侧向或向上移动的空气和水。一些设计比其他设计对这种向上流动的水更敏感。 注2: 该试验方法不能识别可能渗透到试样中的不可观察液态水。

1.1 This test method covers the determination of the resistance of exterior windows, curtain walls, skylights, and doors to water penetration when water is applied to the outdoor face and exposed edges simultaneously with a uniform static air pressure at the outdoor face higher than the pressure at the indoor face. 1.2 This test method is applicable to any curtain-wall area or to windows, skylights, or doors alone. 1.3 This test method addresses water penetration through a manufactured assembly. Water that penetrates the assembly, but does not result in a failure as defined herein, may have adverse effects on the performance of contained materials such as sealants and insulating or laminated glass. This test method does not address these issues. 1.4 The proper use of this test method requires a knowledge of the principles of pressure measurement. 1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.6 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. For specific hazard statements, see 7.1 . 1.7 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. ====== Significance And Use ====== 5.1 This test method is a standard procedure for determining the resistance to water penetration under uniform static air pressure differences. The air-pressure differences acting across a building envelope vary greatly. These factors should be fully considered prior to specifying the test pressure difference to be used. Note 1: In applying the results of tests by this test method, note that the performance of a wall or its components, or both, may be a function of proper installation and adjustment. In service, the performance will also depend on the rigidity of supporting construction and on the resistance of components to deterioration by various causes, vibration, thermal expansion and contraction, etc. It is difficult to simulate the identical complex wetting conditions that can be encountered in service, with large wind-blown water drops, increasing water drop impact pressures with increasing wind velocity, and lateral or upward moving air and water. Some designs are more sensitive than others to this upward moving water. Note 2: This test method does not identify unobservable liquid water which may penetrate into the test specimen.