BOS 173:2013 ed.2

Description

timber and timber products (other than for composite board products and timber products that fall within the scopes of BOS 204-1, BOS 204-2, SANS 753 and BOS 176), that have a predicted service life at various levels of preservative treatment which are considered to be acceptable for a range of hazard conditions. This standard is not applicable to treatment with fire retardants or to treatments aimed at improving the physical properties of timber and timber products nor does it cover the inherent quality of timber or timber products or properties other than in respect of preservative treatment. NOTE 1 Except under the certification mark scheme, assessment of conformity with the requirements of 4.1, 4.3, 4.4 (in the cases of Class C and Class W preservatives), 4.6 (except where quantitative analysis has been agreed upon) and 4.7 requires special agreement between the supplier and the purchaser. NOTE 2 Where Class W preservatives have been used, previous grading of timber in respect of moisture content, splits, checks, warp, dimensions and finish may be invalidated. NOTE 2 This standard should be read in conjunction with BOS 174.