The objectives of this study were to evaluate the mechanical properties of laminated veneer
lumber (LVL) with different grain angles by 3 non-destructive tests (NDTs). The grain angles of
LVL ranged from 0° to 90° at 15° intervals. The bending, compression, and shear strength of LVL
decreased by 50% when the grain angle respectively increased to 30°, 45°, and 60°. The constant
of Hankinson’s formula was 2.58 for LVL, calculated with bending properties by the 3 non-destructive
methods. The predictive accuracy calculated by Hankinson’s formula and plate vibration
testing was higher compared to the modulus of elasticity of different grain angles (MOE; with an
R2 value of 0.97) and was close to the experimental results.