Strength graded structural timber

Strength graded structural timber is dried and planed sawn timber (without finger joints) which is produced for loadbearing applications by cutting or profiling of round wood in saw mills. For construction purposes solid timber has to be classified according to its strength by visual or machine grading according to EN 14081-1 of Eurocode 5: Design of timber structures. Different strength classes apply.

The characteristic values for tensile shear strength in the direction perpendicular to the grain are based on specimens. Shear strength values are determined on an evenly stressed volume. In accordance with EN 1995-1-1, all the characteristic values have to be modified according to the duration of load (kmod, kdef).

Strength graded structural timber

 
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