Strength of end-grain finger joints in beech-wood

The paper encompasses previous research on some physical and mechanical properties of glued joints with small finger joints, 7.5 mm and 10 mm, carried out on longitudinally joined pieces of beechwood (Fagus silvatica, L). The work includes a test on four sample groups tested for static loading to establish strength against bending, i.e. to determine the elasticity module. The 7.5 mm finger joints provided a higher bending strength than the 10 mm finger joints. The elasticity module for all four sample groups with a lateral and flat position of the joints in relation to the power direction did not show any remarkable differences.