1.1本规程涵盖了三类硬木和软木构件的质量要求，不包括用于建造箱子、板条箱、托盘以及垫块和支撑的人造或预制木复合材料。 1.2以英寸-磅为单位的数值应视为标准值。括号中给出的国际单位仅供参考。 1.3本规程无意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和健康实践，并确定监管限制的适用性。

1.1 This practice covers the quality requirements for three classes of hard and soft wood members, excluding man-made or fabricated wood composites, used in the construction of boxes, crates, pallets, and blocking and bracing. 1.2 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only. 1.3 This practice 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 and health practices and determine the applicability of regulatory limitations prior to use.