1.1 本试验方法描述了根据特定的产品标准规范或制造商的安装说明进行紧固时，测试和评估硬质塑料墙板抗锚载荷的方法。 1.2 正确使用此测试方法需要了解压力测量原理。 1.3 本试验方法描述了用于确定平均最大持续静态试验压力或极限试验压力值或两者的仪器和程序，其中静态压力均匀施加在试样上。 注1: 目前还没有与此测试方法等效的ISO。 1.4 以英寸-磅为单位表示的数值应视为标准。括号中的SI等效值仅供参考。 1.5 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. . 1.6 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 本试验方法是确定刚性塑料壁板在规定的均匀静压差下抗锚荷载的标准程序。这通常是为了表示风荷载对建筑外部表面的影响。建筑表面的实际荷载相当复杂，随风向、时间、地面高度、建筑形状、地形、周围结构和其他因素而变化。 5.2 根据各机构编制的风速图，以及ASCE 7、《国际住宅规范》、《国际建筑规范》或其他来源的参考资料，得出特定地理位置的设计风压。有关使用该试验方法评估风荷载阻力的更多详细信息，请参阅适用于聚合物墙板类型的标准规范附录A1。 注2: 在应用该试验方法的结果时，请注意，刚性PVC墙板的性能是安装的一个函数，样品可能真正代表实际应用，也可能不代表实际应用。在使用中，性能还将取决于支撑结构的刚度，以及其他部件对各种原因造成的退化、热膨胀和收缩等的抵抗力。

1.1 This test method describes methods for testing and evaluating windload resistance of rigid plastic siding when fastened in accordance with specific product standard specifications, or in accordance with the manufacturer’s installation instructions. 1.2 The proper use of this test method requires a knowledge of the principles of pressure measurement. 1.3 This test method describes the apparatus and the procedures to be used to determine an average maximum sustained static test pressure, or ultimate test pressure values, or both, with static pressure applied uniformly to a specimen. Note 1: There is no known ISO equivalent to this test method. 1.4 The values expressed in inch-pound units are to be regarded as the standard. The SI equivalents in parentheses are for information only. 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 precautionary 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 is a standard procedure for determining windload resistance of rigid plastic siding under specified uniform static pressure difference. This typically is intended to represent the effects of wind loads on exterior building surfaces. 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. 5.2 Design wind pressure is derived for specific geographical locations from wind velocity maps prepared by various agencies and found in references such as ASCE 7, the International Residential Code, International Building Code or other sources. For additional detailed information relating to the use of this test method for evaluation of wind load resistance, refer to Annex A1 of the standard specification appropriate for the type of polymeric siding. Note 2: In applying the results of this test method, note that the performance of rigid PVC siding is a function of installation, and the specimen may or may not truly represent the actual application. In service, performance will also depend on the rigidity of supporting construction, and on the resistance of other components to deterioration by various causes, to thermal expansion and contraction, etc.