scope:

Preface

This is the tenth edition of the CSA O80 Series of Standards, Wood preservation. It supersedes the previous editions published in 1997, 1989, 1983, 1974, 1970, 1966, 1962, 1959, and 1954.

This edition's technical requirements have been reorganized into a format called the Use Category System (UCS). The UCS is designed to facilitate selection of the appropriate wood species, preservative, penetration, and retention (loading) by the specifier and user of treated wood by more accurately matching the species, preservative, penetration, and retention for typical moisture conditions and wood biodeterioration agents to the intended end use.

This Series of Standards consists of six Standards, as follows:

• CSA O80.0, General requirements for wood preservation, specifies requirements and provides information applicable to the entire Series of Standards. It deals with subjects covered by CSA O80.0 in the previous edition.

• CSA O80.1, Specification of treated wood, is intended to help specifiers and users of treated wood products identify appropriate requirements for preservatives for various wood products and end use environments. It deals with subjects covered by portions of the Commodity Standards (CSA O80.1 to CSA O80.36) in the previous edition.

• CSA O80.2, Processing and treatment, specifies minimum requirements and process limitations for treating wood products. It deals with subjects covered by portions of the Commodity Standards (CSA O80.1 to CSA O80.36) in the previous edition.

• CSA O80.3, Preservative formulations, specifies requirements for creosote and copper naphthenate and deals with subjects covered by CSA O80.202 and CSA O80.203 in the previous edition. The Technical Committee on Wood Preservation intends that CSA O80.3 will be used to accommodate additional preservative formulations (if any) in future editions of this Series of Standards.

• CSA O80.4, Hydrocarbon solvents, specifies requirements for Type A and C hydrocarbon solvents and deals with subjects covered by CSA O80.201 in the previous edition. The Technical Committee intends that CSA O80.4 will be used to accommodate additional hydrocarbon solvents (if any) in future editions of this Series of Standards.

• CSA O80.5, Additives, specifies requirements for four types of additives and deals with subjects covered by CSA O80.204 to CSA O80.207 in the previous edition. The Technical Committee intends that CSA O80.5 will be used to accommodate additional additives (if any) in future editions of this Series of Standards.

Users of this Series of Standards should also note the following:

• In 2005, requirements for alkaline copper quat, Type C (ACQ-C), and copper azole, Type B (CA-B), were added to the CSA O80 Series of Standards by O80S2-05, Supplement No. 2 to O80 Series-97, Wood Preservation. The current edition of this Series of Standards also includes requirements for ACQ-C and CA-B.

Requirements for alkaline copper quat, Type D, have been added.

• Requirements for cooling towers and residential treated wood products have been added.

There are currently no fire retardant treatments that have been standardized by CSA. Clauses 9.9 of CSA O80.1 and 9.8 of CSA O80.2, however, specify minimum requirements for fire retardant treatments. The Technical Committee intends that Clauses 9.9 of CSA O80.1 and 9.8 of CSA O80.2 will be used to accommodate standardized fire retardant treatments (if any) in future editions of this Series of Standards.

The Technical Committee wishes to thank the American Wood Protection Association (AWPA) and its committee members for their assistance in developing CSA O80.1 and CSA O80.2 and adapting the UCS to Canadian needs. This Series of Standards incorporates requirements from Standards published by AWPA and the American Society for Testing and Materials (ASTM International), modified where necessary to suit Canadian conditions. AWPA Standards are copyrighted by AWPA. Content from AWPA Standards is reproduced in the CSA O80 Series of Standards with permission. To purchase AWPA Standards, updates, and amendments, visit http://www.awpa.com.

The Technical Committee's practice of annually reviewing changes to AWPA Standards has been discontinued. Revisions to AWPA Analytical (A), Evaluation (E), and Miscellaneous (M) Standards, and to AWPA Conversion Factors and Correction Tables, will be incorporated into future editions of this Series of Standards as a matter of course unless the Technical Committee decides otherwise. Revisions to AWPA U1 and T1 Standards (formerly Commodity (C) Standards) and to AWPA Preservative (P) Standards will be considered for incorporation into future editions of this Series of Standards only at the request of an interested party.

The Technical Committee's practice of annually reviewing changes to applicable ASTM Standards continues. Revisions to applicable ASTM Standards will be incorporated into future editions of this Series of Standards when appropriate.

This Series of Standards specifies minimum requirements that will provide satisfactory service and appropriate protection for users.

The technical changes to the current edition of this Series of Standards were developed and reviewed by Technical Committee members who volunteered their time and expertise. In addition, the publication of this Series of Standards has been made possible by the financial support of the Canadian Wood Council on behalf of Wood Preservation Canada and its member organizations.

These Standards were prepared by the Subcommittee on the Use Category System (UCS), under the jurisdiction of the Technical Committee on Wood Preservation and the Strategic Steering Committee on Forest Products, and have been formally approved by the Technical Committee. These Standards will be submitted to the Standards Council of Canada for approval as National Standards of Canada.

March 2008

Notes:

(1) Use of the singular does not exclude the plural (and vice versa) when the sense allows.

(2) Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.

(3) This publication was developed by consensus, which is defined by CSA Policy governing standardization - Code of good practice for standardization as "substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity". It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this publication.

(4) CSA Standards are subject to periodic review, and suggestions for their improvement will be referred to the appropriate committee.

(5) All enquiries regarding this Standard, including requests for interpretation, should be addressed to Canadian Standards Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6. Requests for interpretation should

(a) define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;

(b) provide an explanation of circumstances surrounding the actual field condition; and

(c) be phrased where possible to permit a specific "yes" or "no" answer.

Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are published in CSA's periodical Info Update, which is available on the CSA Web site at www.csa.ca.