1.1 本试验方法包括用机械方法测量沥青屋面板的抗拔性。它适用于使用工厂应用或现场应用密封剂的木瓦。 1.2 有几种类型的木瓦设计用于在没有工厂应用或现场应用密封剂的情况下使用。当按照制造商的使用说明使用这些木瓦时，可以采用其他方式来抵抗风的作用所产生的力，如几何形状和木瓦结构。现场经验表明，这些类型的木瓦在使用中能令人满意地发挥作用。由于这些木瓦的设计多种多样，因此在本测试方法中描述如何测试这些木瓦抗拔性是不现实的。因此，这些类型的木瓦的测试超出了该测试方法的范围。 1.3 该试验方法描述了测量木瓦抗拔性的两个程序。程序A采用了一种特殊设计的带有夹紧装置的设备，该设备有助于提升木瓦的边缘并测量打破密封所需的力。 步骤B采用粘附在木瓦耐候表面的金属“T”形截面，以便于施加和测量垂直力，从而破坏密封。 1.4 不禁止在一定的密封时间和温度组合以及测试温度范围内使用此测试方法来模拟各种实际现场使用条件。应在报告中说明使用的时间和温度。 1.5 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值可能不是完全相等的；因此，每个系统应独立使用。将两个系统的值结合起来可能会导致不符合标准。 1.6 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。 1.7 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 抗拔性是应用木瓦的特性之一，与其承受风力的能力有关。所述的机械测试是在指定条件下密封木瓦后，在指定温度下测量电阻的实验室方法。 5.1.1 该试验方法通过规定方式的直接测量来确定密封木瓦的机械抗拔性。参见测试方法 D7158/D7158米 对于这种机械上拔阻力与由风的作用产生的上拔力之间的关系。 5.2 许多因素影响现场木瓦的密封特性； 例如，温度、时间、污垢和碎屑的污染、屋顶坡度以及错位紧固件的干扰。本试验方法的目的不是解决所有这些影响。该试验方法旨在确定测试前在选定条件下密封木瓦代表性试样时的机械抗拔性。 5.3 程序A产生的结果低于程序B。程序A提供边缘提升载荷值，程序B提供垂直载荷值。适用于特定产品的程序取决于特定的产品设计、几何形状和刚度。本试验方法的使用者有责任根据具体产品和应用确定适当的程序。工程计算可能需要采用这两种程序，并在计算特定产品对风影响的阻力时使用这两种结果。 5.4 将此方法与试验方法结合使用时 D7158/D7158米 为了确定木瓦的抗拔性，作为确定木瓦风阻的一部分，根据试验方法第12.2节中木瓦几何形状和密封剂配置的讨论和示例，确定适当的程序（程序A、程序B或两者） D7158/D7158米 .

1.1 This test method covers measuring the uplift resistance of asphalt roofing shingles by mechanical means. It is applicable to shingles that use a factory-applied or field-applied sealant. 1.2 There are several types of shingles designed for service without a factory-applied or field-applied sealant. These shingles, when applied in accordance with the manufacturers' application instructions, employ other means to provide resistance against the forces generated by the action of wind such as geometry and shingle construction. Field experience has shown that these types of shingles function satisfactorily in service. Because there are a variety of these shingle designs, it is not practical to describe in this test method how to test these shingles for uplift resistance. The testing of these types of shingles, therefore, goes beyond the scope of this test method. 1.3 This test method describes two procedures for measuring shingle uplift resistance. Procedure A employs a specially designed apparatus with a clamping device which facilitates lifting of the edge of the shingle and measuring the force required to break the seal. Procedure B employs a metal “T” section adhered to the weather surface of the shingle to facilitate application and measurement of a perpendicular force to break the seal. 1.4 It is not prohibited to use this test method over a range of sealing time and temperature combinations and testing temperatures to simulate a variety of actual field use conditions. The times and temperatures used shall be stated in the report. 1.5 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. 1.6 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. 1.7 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 Uplift resistance is one of the properties of an applied shingle that relates to its ability to withstand wind forces. The mechanical tests described are laboratory methods to measure that resistance at a designated temperature after the shingles have been sealed under designated conditions. 5.1.1 This test method determines the mechanical uplift resistance of sealed shingles by direct measurement in a prescribed manner. See Test Method D7158/D7158M for the relationship between this mechanical uplift resistance and the uplift forces derived from the action of wind. 5.2 Many factors influence the sealing characteristics of shingles in the field; for example, temperature, time, contamination by dirt and debris, roof slope, and interference by misplaced fasteners. It is not the objective of this test method to address all of these influences. This test method is designed to determine the mechanical uplift resistance when representative specimens of shingles are sealed under selected conditions prior to testing. 5.3 Procedure A produces lower results than Procedure B. Procedure A provides an edge-lift load value and Procedure B provides a perpendicular load value. The procedure applicable to a specific product depends on the specific product design, geometry, and rigidity. It is the responsibility of the user of this test method to determine the appropriate procedure with reference to the specific product and application. It is possible that engineering calculations would require both procedures to be employed, and for both results to be used in the calculation of the resistance of that specific product to the effects of wind. 5.4 When using this method in conjunction with Test Method D7158/D7158M to determine the uplift resistance of shingles as part of the determination of wind resistance of the shingles, determine the appropriate procedure (Procedure A, Procedure B, or both) in accordance with the discussion, and examples, of shingle geometry and sealant configuration in Section 12.2 of Test Method D7158/D7158M .