前言:这是CSA O122《结构胶合层压木材》的第四版。它取代了2006年、1989年和1980年出版的以前版本。本标准包含道格拉斯冷杉落叶松、西部铁杉、哼哼冷杉/道格拉斯冷杉落叶松、罗德波尔松、杰克松和云杉的应力等级。本标准拟与CSA O177《结构胶合层压木材制造商资格认证规范》结合使用。本版本的变更包括以下内容:a）16c-E道格拉斯冷杉/落叶松集成材的等级组合已变更b）制造具有1小时和2小时耐火等级的集成材产品的公差c）程序允许使用边缘- 已批准集成材中的胶合薄板。d）已将要求添加到端部接缝真空压力循环试验的标准中。t）增加了面粘结真空压力循环试验的取样要求，减少了面粘结块剪切试验的取样要求。f）道格拉斯冷杉/落叶松24f-E和24f EX集成材的新等级组合，该标准包含在CSA O122的2009年修订版中，是本标准的一部分，并且g）增加了规范性附录B，用于制定集材镜的规定强度和弹性模量:1.1本标准规定了CSA O86中规定种类的集材制造的最低要求。 本标准不包括制造后产品的储存、搬运和安装。1.2 CSA O86涵盖了根据本标准制造的集成材的设计标准。本标准附录B.1.3中提供了集材规定强度和弹性模量的开发要求，其中“应”用于表示要求，即用户有义务满足的规定，以符合本标准；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。 注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）以定义其应用。1.4国际单位制给出的数值为本标准中的记录单位。括号中给出的值仅供参考和比较。注:关于换算成码/磅（英制）当量的信息，请参见附录A。

Preface:This is the fourth edition of CSA O122,Structural glued-laminated timber. It supersedes the previous editions published in 2006, 1989, and 1980.This Standard contains stress grades for Douglas Fir-Larch, Western Hemlock, Hem-Fir/Douglas Fir-Larch, Lodgepole Pine, Jack Pine, and Spruce. This Standard is intended to be used in conjunction with CSA O177,Qualification code for manufacturers of structural glued-laminated timber.Changes to this edition include the following:a) the grade combination for 16c-E Douglas fir/Larch glulam has been changedb) allowances have been made for the manufacturing glulam products that will have a 1 h and 2 h fire ratingc) procedures to allow the use of edge-glued lamina in glulam have been approvedd) requirements have been added to the Standard for vacuum pressure cycle testing of end jointse) the sampling requirements have been increased for the vacuum pressure cycle testing of face bonds and reduced for the block shear testing of face bondsf) a new grade combination for Douglas fir/Larch 24f-E and 24f-EX glulam, which was included in the 2009 revision of CSA O122, is part of this Standard andg) normative Annex B has been added, for the development of specified strengths and modulus of elasticity for glulamScope:1.1This Standard provides minimum requirements for the manufacture of glulam of those species specified in CSA O86. Storage, handling, and installation of products subsequent to manufacture are not covered by this Standard.1.2The design criteria for glulam manufactured in accordance with this Standard are covered in CSA O86. Requirements for the development of specified strengths and modulus of elasticity for glulam are provided in Annex B.1.3In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.1.4The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.Note:For conversion into yard/pound (imperial) equivalents, see Annex A.