1.1 这些试验方法包括测定木杆的弯曲强度和刚度。这些特性的知识用于提供不同种类、尺寸或等级的电杆的可靠和经济设计。 1.2 包括两种测试方法:悬臂测试方法和机器测试方法。 1.3 还规定了从对接部分提取小的透明试样，并根据试验方法确定平行于晶粒强度值的静态弯曲和压缩 D143 . 1.4 这些试验方法中规定的程序适用于处理或未处理材料的试验。 1.5 以英寸-磅为单位的数值应视为标准值。SI值在括号中给出，仅供参考。 1.6 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。 1.7 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====== 4.1 木杆测试旨在确定: 4.1.1 用于确定容许应力的数据， 4.1.2 经济极线设计所依据的数据， 4.1.3 杆尺寸不同物种的强度特性数据， 4.1.4 缺陷对电杆强度特性影响的数据， 4.1.5 防腐剂和防腐剂处理对电杆强度特性的影响数据，以及 4.1.6 将全尺寸电杆的强度特性与同一物种的小型透明试样的强度特性相关联的数据。 4. 2. 处理极点的过程可能会引入变量，禁止不同数据组之间的直接比较。处理技术的完整信息应构成测试记录的一部分。

1.1 These test methods cover determination of the bending strength and stiffness of wood poles. Knowledge of these properties is used in providing for reliable and economical design with poles of different species, size, or grade. 1.2 Two test methods are included: the cantilever test method and the machine test method. 1.3 Provision is also made for extracting small clear specimens from the butt section and determining static bending and compression parallel to grain strength values in accordance with Test Methods D143 . 1.4 The procedures specified in these test methods apply to tests of either treated or untreated material. 1.5 The values stated in inch-pound units are to be regarded as the standard. SI values are given in parentheses and are provided for information only. 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 ====== 4.1 Tests of wood poles are made to determine: 4.1.1 Data for use in establishing allowable stresses, 4.1.2 Data upon which to base economical pole line design, 4.1.3 Data on the strength properties of different species in pole sizes, 4.1.4 Data as to the influence of defects on the strength properties of poles, 4.1.5 Data as to the effect of preservatives and preservative treatments on the strength properties of poles, and 4.1.6 Data for correlating the strength properties of full-size poles with those of small clear specimens of the same species. 4.2 Treating procedures to which poles have been subjected may introduce variables that prohibit direct comparisons between different groups of data. Complete information on the treating techniques shall form a part of the test records.