Visual inspection for qualitative assessment of the state of timber to identify Defects and alterations including knots and fiber deviation, longitudinal splitting, ring shakes, biological damage and insect attacks. Using Non-Destructive Methods (NDT) to measure the moisture content of the wood, which severely affects its Mechanical properties and its susceptibility to degradation by decay, Ultrasonic investigations, Assessment of the material hardness and superficial consistence, Detection of internal defects and density variations by means of measure of drilling resistance, Compression tests and Bending tests (10 specimens type b) for modulus of elasticity and strength.