Round and sawn timber - Permitted deviations and preferred sizes - Part 1: Softwood sawn timber
This European Standard specifies permitted deviations for thickness and width at reference moisture content and adjustments for changes in size due to changes in moisture content. Preferred sizes for thicknesses of 38 mm and over are also specified. This standard applies to softwood sawn timber. An informative annex gives complementary national sizes. NOTE A.5 includes for France the concept of preferred size for green timber.