1.1 本试验标准应用于确定雨水过滤元件的水力特性。 1.2 测试的元件应为通常制造的尺寸，而不是比例模型。 1.3 测试期间所有滤芯的位置和方向应与正常操作期间使用的位置和方向相同。 1.4 测试期间的流向应与正常操作期间的流向相同。 1.5 由于每个雨水处理装置的设计和水力容量都是独特的，因此需要足够数量的精确测量数据点来正确定义每个测试元件的水力特性。因此，必须定义并执行元素设置和后续测试方法，以确保准确的流量和高程数据。 1.6 该测试确定雨水过滤系统的水力能力。测试结果不是固体或其他材料捕集过滤性能的指标。 1.7 单位- 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 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）。本标准的用户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。 1.9 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《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 每个元件都有独特的流型，每个元件都有独特的水力特性（即流量和水头损失）。此外，当滤芯过滤器堵塞、过滤介质膨胀或收缩以及水粘度（即水温）变化时，每个滤芯可能表现出可变的水力容量。在某些情况下，过滤器在填充和清空方面会出现滞后现象。 第节中的测试程序 7. 将有助于开发必要的参数，以确定某一时刻元件的水力能力。可以按所需的时间增量重复测试，以确定液压能力如何随时间变化。

1.1 This test standard shall be used to determine the hydraulic characteristics of stormwater filtration elements. 1.2 Elements tested shall be of a size commonly manufactured, not a scale model. 1.3 The position and orientation of all filter elements during testing shall be identical to the position and orientation used during normal operation. 1.4 The direction of flow during testing shall be identical to the direction of flow during normal operation. 1.5 As each stormwater treatment device is unique in design and hydraulic capacity, a sufficient number of accurately measured data points are needed to properly define the hydraulic characteristics of each test element. Therefore, it is imperative that the element setup and subsequent testing methodologies be well defined and executed to assure accurate flow and elevation data. 1.6 This test determines the hydraulic capacity of stormwater filtration systems. Test results are not an indicator of the filtration performance with respect to the capture of solids or other materials. 1.7 Units— The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the 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. 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 Each element has unique flow patterns and each element has unique hydraulic characteristics (that is, flow and head loss). In addition, each element may exhibit variable hydraulic capacity as the element filters become occluded, the filter media swells or shrinks, and water viscosity (that is, water temperature) changes. In some cases filters experience hysteresis with respect to filling and emptying. The testing procedure in Section 7 will help develop the parameters necessary to determine the hydraulic capacity of an element at one instance in time. The test can be repeated at desired time increments to determine how the hydraulic capacity varies over time.