1.1 本试验方法可用于通过非限制区域洪水试验方法测定合成草坪运动场系统、带垫板或预成型排水板的运动场系统或两者、带预成型面板基层系统的运动场系统、多孔和非多孔路面系统或场地内基石系统或其组合的渗透率。该系统适用于精加工人造草坪运动表面和运动系统下方的石基系统。 1.2 本试验方法适用于人造草坪运动场系统和石材基层，其中系统设计为通过人造草坪表面和/或通过石材表面的渗透性。它也适用于直接强调弹性和非弹性预成型排水板系统和多孔路面基层系统的合成草坪系统。 该方法比密闭环试验方法测试更大的表面积，并由于试验表面积与合成草皮播放系统和石基系统厚度的比率大幅增加，减少了表面和/或石基系统内的横向流动影响。该方法旨在通过消除水柱高度产生的水头压力的影响，更准确地模拟自然风暴流条件，水柱高度在试验区域表面产生了自然不存在的压力流条件。 1.3 本试验方法适用于横坡坡度小于2.0%或在高系统渗透性缓解横坡影响的条件下安装的精整级配和压实石材或精整表面。高坡度系统往往具有高坡度的基础系统，这可能会影响结果，因为较大坡度导致的水力能量增加会导致截面内的横向流量增加。 1.4 本试验方法不适用于由于高表面横坡或邻近性导致表面水流将水流从试验现场输送至表面和地下排水沟或结构的条件或位置。 1.5 此外，如果直接在重大降雨事件后进行，则在接收排水系统的下游容量被征税到下游系统中水回的程度的情况下，该试验方法可能会受到影响。 1.6 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.7 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。 1.8 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 本试验方法可用于测定合成草坪运动场系统、带垫板和/或预成型排水板的运动场系统、带预成型面板基层系统的运动场系统、多孔和非多孔路面系统的现场渗透性，以确认符合设计规范和/或评估现有竣工条件。测试方法的简单性、程序的快速性以及对专用工具和仪器的有限要求，使其非常适合在运动场等大面积上进行大量测试。 5.2 在几种流态下，人造草坪系统往往会排水。第一种流态是表面流，水在表面上从典型的高海拔流向低海拔。第二种流态是流经草坪表面和基层系统。第三种流态为侧向流，分为两部分。草皮表面部分内的横向流动，以及草皮下方预成型排水板、多孔路面和/或基石系统内的横向流动。这些内容在中以图表形式描述 图1 . 图1 基本流态图 5.3 该测试方法可以为业主、设计师和草坪系统建造者提供现场渗透流速的明确指示，通过基础系统的横向流的影响有限，且不受水头压力的影响。 5.4 该试验方法可用于确定旨在降低疏水性影响的处理的有效性，疏水性已被认为会降低某些合成草坪填充材料和组件的渗透性。 5.5 测试方法的可观察性能使我们能够通过定量和定性测量来确定渗透率。

1.1 This test method may be used to determine the permeability rate of synthetic turf playing field systems, playing field systems with pad or premolded drainage boards, or both, playing field systems with premolded panel base systems, porous and non porous pavement systems, or base stone systems in the field, or a combination thereof, by non-confined area flood test method. This system is suitable for use on the finish synthetic turf playing surface and on the stone base system below the playing system. 1.2 This test method is applicable for synthetic turf playing field systems and stone bases where system is designed for permeability through the synthetic turf surface and or through a base stone surface. It is also suitable for synthetic turf playing systems that are directly underlined with resilient and nonresilient pre-molded drainage boards systems and porous pavement base systems. The method tests a larger surface area than confined ring test methods and decreases the effect lateral flow within the surface and or stone base system due to the large increase in the ratio of test surface area to the synthetic turf playing system and stone base system thickness. The method is intended to more accurately mimic natural storm flow conditions by eliminating the effect of head pressure created by the water column height which creates a pressure flow condition at the surface of the test area that does not exist naturally. 1.3 This test method is intended for finish-graded and compacted stone or finished surfaces that are installed with cross-slope gradients of less than 2.0 % or under conditions where the effect of cross-slope is mitigated by high system permeability. High sloping systems tend to have high sloping base systems which may impact results due to increases in the lateral flow within the section caused increased hydraulic energy caused by larger slopes. 1.4 This test method is not applicable for conditions or locations in-which surface flow, due to high surface cross-slope or proximity, carries water flow from the test site to surface and subsurface drainage trenches or structures. 1.5 Further, this test method may be impacted if preformed directly after a significant rainfall event in cases where the downstream capacity of the receiving drainage system is taxed to the extent that water backs up in the downstream system. 1.6 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. 1.7 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. 1.8 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 can be used to determine in-place permeability of synthetic turf playing field systems, playing field systems with pad and or premolded drainage boards, playing field systems with premolded panel base systems, porous and non porous pavement systems in order to confirm compliance with design specifications and or evaluate existing as-built conditions. The simplicity of the test method, the quickness of the procedure, and the limited requirement for special tools and apparatus’ makes this ideal for performing a large quantity of tests over a large area such as a sports field. 5.2 Synthetic turf field systems tend to drain under several flow regimes. The first flow regime is surface flow where water travels across the surface from typically higher elevations to lower elevations. The second flow regime is flow through the turf surface and base system. The third flow regime is lateral flow, which has two parts. Lateral flow within the section of the turf surface and lateral flow within the pre-molded drainage board, porous pavement and or base stone system below the turf. These are depicted diagrammatically in Fig. 1 . FIG. 1 Basic Flow Regime Diagram 5.3 This test method can provide owners, designers and turf system builders with a clear indication of actual in-field permeability flow rates with limited effect of lateral flow through base systems and no effect from head pressure. 5.4 This test method can be used to determine the effectiveness of treatments intended to reduce the effect of hydrophobicity which has been known to decrease the permeability of some synthetic turf infill materials and components. 5.5 The observable performance of the test method enables one to determine permeability by both a quantitative and qualitative measure.