1.1 本实验室试验方法包括当规定的静水压头应用于屋面板外表面时，确定外部金属屋面板系统侧梁、端搭接和屋面板贯穿件的防水性。 注1: 本试验方法旨在评估防水层（而非排水）屋顶系统接缝和细节。这些系统也称为静水压屋顶系统。 1.2 该试验方法仅限于侧梁和附件清晰可见且易于观察到泄漏源的试样。 1.3 该试验方法不包括在屋顶周边条件下的性能。 1.4 该试验方法适用于评估静水压头下屋顶平面贯穿件（如紧固件、路缘石、管道和伸缩缝）的泄漏。 1.5 正确使用此测试方法需要了解水压原理。 1.6 本标准的文本包括注释和脚注，不包括提供解释材料的表格和数字。这些注释和脚注不应被视为本标准的要求。 1.7 以英寸-磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.8 本标准并非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制定适当的安全、健康和环境实践，并确定监管限制的适用性。 有关具体的预防说明，请参阅第节 7. 。 1.9 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 5.1 本试验方法是一种标准程序，用于确定当屋顶系统承受规定的静水压头时，通过金属屋面板系统侧梁、端搭接和屋顶平面贯穿件的漏水情况。 注2: 在应用该方法的测试结果时，请注意，屋顶或其部件或两者的性能在一定程度上是正确安装和调整的功能。 在使用中，性能还将取决于支撑结构、屋顶坡度的完整性，以及构件对各种原因（腐蚀性大气、老化、结冰、振动、热循环等）造成的退化的抵抗力。很难模拟使用中可能遇到的相同的复杂润湿、老化和其他可变条件，包括风吹的积水；温度和老化对密封胶性能的影响；由于风、雪和冰的堆积而造成的接缝压差；致密化和迁移；以及在热循环和其他天气事件期间可能发生的接头部件内的磨损。某些关节状况比其他关节状况对这些因素更敏感。 5.2 该试验方法将评估屋面板、侧梁、端搭接和屋面板贯穿件对浸水的抵抗力。它不会评估面板对风雨的抵抗力。 注3: 参见测试方法 E1646 用于评估对风力驱动的雨水的抵抗力的测试。 5.3 此测试方法不是结构充分性测试。 5.4 本试验方法适用于单层金属板、工厂组装复合材料板的外部蒙皮和现场组装复合材料系统的外部蒙皮，只要能够提供方法来区分通过外部面板侧梁/端搭接的泄漏和周边泄漏。

1.1 This laboratory test method covers the determination of the resistance to water penetration of exterior metal roof panel system sideseams, endlaps, and roof plane penetrations when a specified static water pressure head is applied to the outside face of the roof panel. Note 1: This test method is intended to evaluate water-barrier (not water-shedding) roof system joints and details. These systems are also referred to as hydrostatic roof systems. 1.2 This test method is limited to specimens in which the sideseams and attachments are clearly visible and in which the source of leakage is readily observable. 1.3 This test method excludes performance at roof perimeter conditions. 1.4 This test method is suitable for evaluating leakage at roof plane penetrations such as fasteners, curbs, pipes, and expansion joints under a static water pressure head. 1.5 The proper use of this test method requires a knowledge of the principles of water pressure. 1.6 The text of this standard includes notes and footnotes excluding tables and figures, which provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard. 1.7 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. 1.8 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 precautionary statements, see Section 7 . 1.9 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 water leakage through metal roof panel system sideseams, endlaps, and roof plane penetrations when the roof system is subjected to a specified static water pressure head. Note 2: In applying the results of tests by this method, note that the performance of a roof or its components or both, is in part a function of proper installation and adjustment. In service, the performance will also depend on the integrity of the supporting construction, roof slope, and on the resistance of components to deterioration by various causes: corrosive atmosphere, aging, ice, vibration, thermal cycling, etc. It is difficult to simulate the identical complex wetting, aging, and other variable conditions that can be encountered in service, including wind-blown ponded water; the effects of temperature and age on sealant performance; differential pressure across the joints due to wind, snow, and ice accumulation; densification and migration; and abrasions within the joint components which may occur during thermal cycling and other weather events. Some joint conditions are more sensitive than others to these factors. 5.2 This test method will evaluate the resistance of roof panels, sideseams, endlaps, and roof plane penetrations to water submersion. It will not evaluate panel resistance to wind driven rain. Note 3: See Test Method E1646 for a test which evaluates resistance to wind driven rain. 5.3 This test method is not a structural adequacy test. 5.4 This test method is applicable to single skin metal panels, the exterior skin of factory assembled composite panels, and the exterior skin of field assembled composite systems as long as means can be provided to distinguish leakage through the exterior panel sideseams/endlaps and perimeter leakage.