1.1 本规程涵盖了确定结构胶合层压木材允许性能的程序。包括弯曲、平行于晶粒的拉伸和压缩、水平剪切、垂直于晶粒的压缩以及弯曲构件中的径向拉伸和压缩的容许应力。还包括弹性模量和刚度模量。 1.2 这种做法仅限于根据所考虑物种的木材等级选择和排列的给定程序计算允许特性。 1.3 生产、检验和认证要求不包括在内，但为了证明使用本规程中的程序开发的允许性能，制造商必须符合公认的制造标准。参考ANSI A190.1和CSA O122。 1.4 以英寸-磅为单位的数值应视为标准。以国际单位制给出的值是数学转换，仅供参考，不被视为标准。 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。 1.6 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。

1.1 This practice covers the procedures for establishing allowable properties for structural glued laminated timber. Included are the allowable stresses for bending, tension and compression parallel to the grain, horizontal shear, compression perpendicular to the grain, and radial tension and compression in curved members. Also included are modulus of elasticity and modulus of rigidity. 1.2 This practice is limited to the calculation of allowable properties subject to the given procedures for the selection and arrangement of grades of lumber of the species considered. 1.3 Requirements for production, inspection and certification are not included, but in order to justify the allowable properties developed using procedures in this practice, manufacturers must conform to recognized manufacturing standards. Refer to ANSI A190.1 and CSA O122. 1.4 The values stated in inch-pound units are to be regarded as standard. The values given in SI units are mathematical conversions that are provided for information only and are not considered 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. 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.