This document gives methods of determination of duration of load and creep factors under bending actions at ambient temperatures for a defined population of structural timber products such as solid timber, LVL, OSB, plywood, particleboard, I-beams calculated from test values.


It presents methods for


a)       determining the duration of load and creep factors for new timber products,


b)       establishing whether a previously defined set of duration of load and creep factors can be applied to a tested product, and


c)        an optional method for establishment of sensitivity of duration of load and creep factors to changes in environmental conditions.


NOTE 1        This document is intended to apply to wood-based products for which a duration of load factor or a creep factor is used in design.


NOTE 2