CSA O153:19

Preface This is the fifth edition of CSA O153, Poplar plywood. It supersedes the previous editions published in 2013, 1980, 1976, and 1963. This Standard specifies an in-plant production and quality control system that includes auditing and control by a recognized certification body if applicable. It also provides a mechanism for the specification, quality control, and allows the use of alternative overlay systems. Changes in the fifth edition include the following: a) updated some reference publications; b) editorial changes for consistency with other recent CSA plywood standards; and c) updated the high-density and medium-density overlay plywood in Annex C. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope 1.1 This Standard applies to exterior bond, all-veneer plywood that has a minimum of three plies and whose outermost plies have parallel grain direction. 1.2 This Standard specifies requirements for a) a quality system; b) materials; c) panel construction; d) bonding; e) veneer and panel grades; f) dimensions and tolerances; g) marking; and h) testing. 1.3 In 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; "may" is used to express an option or that which is permissible within the limits of the standard; and "can" is used to express possibility or capability. 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.