Die Streuung des Elastizitätsmoduls in Brettlängsrichtung

The modulus of elasticity (MOE) of 100 boards and 640 board sections, 45 cm long, was determined. For the board sections, a regression equation for the MOE, depending on density and knot size was calculated. In more than 80% of the boards the MOE-variability within one board was lower than the residue of the regression equation valid for all board sections.