BS DD239(1998) : 1998

Committees responsible
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Use of these recommendations
Annex A (normative) Timber components grouped according
to service environments
Annex B (informative) Decision process for using preservative
treatment
Annex C (informative) Design factors in Table 9
Bibliography
Table 1 Service factors based on safety and economic
          considerations
Table 2 Natural durability recommendations for timber
          components
Table 3 Summary of penetration classes and analytical zones
          for determination of retention in accordance with
          BS EN 351-1
Table 4 Treatment recommendations for copper/chromium/arsenic
          (CCA) preservatives conforming to BS 4072-1
Table 5 Treatment recommendations for creosotes conforming
          to BS 144
Table 6 Treatment recommendations for organic solvent-based
          preservatives conforming to BS 5707
Table 7 Treatment recommendations for aqueous solutions
          of boron compounds applied by diffusion to
          green timber
Table 8 Treatment recommendations for aqueous solutions
          of boron compounds applied to dry timber
Table 9 Treatment recommendations for preservatives for
          which an appropriate CV as described in
          BS EN 599-1 is available
Table A.1 Examples of timber components within each component
          group listed in Table 2 and Tables 4 to 9
Table B.1 Stages of the decision process for using wood
          preservative treatment