11. BS EN 789 : 1996 Timber Structures – Test Methods - Determination of mechanical properties of wood-based panels.

(This standard is new work and, therefore, does not supersede any existing British Standard)

  The standard describes tests specifically designed for determining the mechanical properties of wood-based panels used in load-bearing timber structures.  These properties are intended for the calculation of characteristic values according to BS EN 1058 : 1996 Wood-based panels – Determination of characteristic values of mechanical properties and density.  These characteristic values are used in obtaining the design values for plywood applications in timber structures designed to Eurocode 5. Also, changes appearing in BS 5268-2 : 2002 Structural use of timber – Code of Practice for permissible stress design, materials and workmanship will reference BS EN 789 and BS EN 1058 for some plywood types acceptable for load-bearing applications in the United Kingdom.  Characteristic values determined under BS EN 1058 will have to be converted to permissible stress values as directed in BS 5268-2.