带密封TabsUL 23901 Scope1的抗风沥青瓦的试验方法。1本试验方法提供了一种测定沥青瓦在垂直于或穿过瓦表面的气流作用下的风扬系数（DCp’s）的方法。DCp是通过测量密封剂迎风侧和背风侧木瓦表面上方和下方的压力，并考虑木瓦刚度（El）来计算的。然后，根据ASCE 7中规定的基本风速，根据本标准中的规定计算作用在密封剂上的上拔力- 05（建筑物和其他结构的最小设计荷载），这也是建筑物高度、建筑物暴露类别和重要性系数的函数。1.1于20091年6月12日修订。2计算风扬系数所需的木瓦刚度（El）值通过以下两种方法之一确定:根据第3节“木瓦刚度”测试木瓦刚度，或为符合ASTM D225-07的木瓦选择2.5 lbf-in2（7.17 kN-mm2）的保守值，表面有矿物颗粒或ASTM D3462的沥青瓦（有机毡）的标准规范- 07，由玻璃毡制成并表面有矿物颗粒的沥青瓦的标准规范。1.2修订于20091年6月12日。3本试验方法适用于任何表面有矿物颗粒的沥青瓦，其中，上面的瓦用密封剂（工厂或现场应用）固定在下面的瓦表面，密封剂以与瓦迎风边缘平行的方式应用。1.4本试验方法不涉及以下内容:测定密封剂的阻力能力；由于风作用在用于将瓦应用于屋顶板的紧固件上而产生的上拔力； 以及其他影响荷载的因素，例如发生在周边边缘或贯穿件处的因素。1.5本实验室试验标准和用于确定瓦上作用力的计算基于风工程研究。ASCE 7-05《建筑物和其他结构的最小设计荷载》也包含相关的公认实践。使用本标准获得的结果提供了确定设计值的方法。实际现场性能受多种因素的影响，包括所采用的安装实践、工作现场条件、一年中的时间、天气、温度、小气候变化和其他特定情况。 1.5 2009年6月12日修订

Test Method for Wind Resistant Asphalt Shingles with Sealed TabsUL 23901 Scope1.1 This test method provides a means of determining wind uplift coefficients (DCp's) for asphalt shingles subjected to an air flow perpendicular to and across the shingle surface. DCp's are calculated by measuring pressures above and below the shingle surface at the windward and leeward sides of the sealant, taking into account shingle rigidity (El). Uplift force acting on the sealant is then calculated in accordance with the provisions described in this standard based on the basic wind speeds prescribed in ASCE 7-05 (Minimum Design Loads for Buildings and Other Structures), which are also a function of building height, building exposure category and importance factor.1.1 revised June 12, 20091.2 The value for shingle rigidity (El) needed to calculate wind uplift coefficients is determined by one of two methods: testing shingle rigidity in accordance with Section 3, Shingle Rigidity, or selecting a conservative value of 2.5 lbf-in2 (7.17 kN-mm2) for shingles that comply with ASTM D225-07, Standard Specification for Asphalt Shingles (Organic Felt) Surfaced with Mineral Granules, or ASTM D3462-07, Standard Specification for Asphalt Shingles Made from Glass Felt and Surfaced with Mineral Granules.1.2 revised June 12, 20091.3 This test method is applicable to any asphalt shingle surfaced with mineral granules where the shingle above is affixed to the surface of the shingle below with a sealant (factory or field applied) applied in a pattern aligned parallel to the windward edge of the shingle.1.4 This test method does not address the following: determination of the resistance-force capability of the sealant; uplift forces due to wind acting on the fasteners used to apply the shingles to roof deck; and other factors that affect loading such as those occurring at the perimeter edge or at penetrations.1.5 This laboratory test standard and the calculations used to determine the forces on shingles are based upon wind engineering studies. ASCE 7-05, Minimum Design Loads for Buildings and Other Structures, also contains related recognized practices. The findings obtained using this standard provide the means of determining a design value. Actual field performance is affected by numerous factors, including installation practices employed, job site conditions, time of year, weather, temperature, microclimate variations and other specific circumstances.1.5 revised June 12, 2009