This is the sixth edition of CSA Standard 080, Wood Preservation and it supersedes the fifth edition published in 1970 and incorporates CSA Preliminary Standard 080.15 published in 1973. Earlier editions were published in 1966, 1962, 1959, and 1954.
Originally, this Standard adopted by reference, certain Standards of the American Wood Preservers' Association, and of the American Society for Testing and Materials, which were supplemented, where necessary, to suit conditions peculiar to Canada. This basis is still used for all Standards other than the Commodity Standards but, in the case of the latter, it was found that the increasing incidence of supplements was adversely affecting clarity and usefulness. To correct this inadequacy, the Committee decided to prepare full Canadian Commodity Standards which could be used independently of the reference Standards. This task was completed and the inclusion of the resulting Commodity Standards, duly approved by CSA procedures, represented the primary difference between the fourth and fifth editions.
The practice of annually reviewing the AWPA and ASTM Standard changes has been continued up to this sixth edition and will be continued so that those CSA standards which are adopted by reference, can be kept current and so that new developments might be incorporated in the full Commodity Standards if applicable.
Revisions to this edition will be issued in loose leaf form to replace completely, those pages containing obsolete requirements. Where additional pages are required to contain an expanded text, these pages will be renumbered with a page number containing a suffix letter.
This Standard may be considered a minimum Standard, which may be modified, but which, if used without modification, will still protect the user, and provide satisfactory service.
This Standard was prepared by the Committee on Wood Preservation under the jurisdiction of the Sectional Committee on Timber, and was formally approved by these Committees.
This Standard sets forth requirements for materials, analysis of material, and operational practices for pressure and thermal impregnation for the chemical preservation of wood.