1.1 本试验方法包括使用试验箱测定尺寸石材覆层系统在正负均匀静态气压差下的结构性能。 1.2 正确使用本试验方法需要了解压力和挠度测量原理。 1.3 本试验方法描述了将特定试验载荷或均匀分布试验载荷的未知极限值应用于试样的装置和程序。 1.3.1 程序A（参见 11.2 )当仅需要在最大载荷下偏转时，应使用。 1.3.2 程序B（参见 11.3 )当需要荷载-挠度曲线时，应使用。 1.4 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。 1.5 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。 有关具体的危险说明，请参阅第节 7. . 1.6 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 该试验方法提供了在均匀静态空气压差下确定结构性能的标准程序。这通常旨在表示风荷载对外部建筑表面元素的影响。 建筑物表面的实际荷载相当复杂，随风向、时间、地面高度、建筑物形状、地形、周围结构和其他因素而变化。这些因素在中的文献中进行了讨论 2.2和 2.3 以及脚注4和5。 注1: 在应用本试验方法的试验结果时，应记住，覆层系统的性能可能是制造、安装和调整的函数，并且试样可能真实地代表或不真实地代表实际结构。在使用中，性能还取决于支撑结构的刚度，以及组件对各种原因引起的劣化、振动、热膨胀和收缩等的抵抗力。

1.1 This test method covers the determination of the structural performance of dimension stone cladding systems under positive and negative uniform static air pressure differences, using a test chamber. 1.2 The proper use of this test method requires a knowledge of the principles of pressure and deflection measurement. 1.3 This test method describes the apparatus and the procedure to be used for applying either specific test loads or unknown ultimate values of uniformity distributed test loads to a specimen. 1.3.1 Procedure A (see 11.2 ) shall be used when deflections at maximum load only are required. 1.3.2 Procedure B (see 11.3 ) shall be used when a load-deflection curve is required. 1.4 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 non-conformance with the standard. 1.5 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 Section 7 . 1.6 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 gives a standard procedure for determining structural performance under uniform static air pressure difference. This typically is intended to represent the effects of wind loads on exterior building surface elements. The actual loading on building surfaces is quite complex, varying with wind direction, time, height above ground, building shape, terrain, surrounding structures, and other factors. These factors are discussed in the literature in 2.2 and 2.3 and Footnotes 4 and 5. Note 1: In applying the results of tests by this test method, it should be borne in mind that the performance of a cladding system may be a function of fabrication, installation, and adjustment, and that the specimen may or may not truly represent the actual structure. In service, the performance will also depend on the rigidity of supporting construction and on the resistance of components to deterioration by various causes, to vibration, to thermal expansion and contraction, etc.