Modulus of Elasticity in Static Bending for Oriented Strand Board (OSB)

Reference Abstract OSB (oriented strand boards) are wood based products that substitute plywood boards, usually used as structural elements, especially with part of formwork for reinforced concrete members as beams, slabs and columns. In this context, the stiffness properties are highly important. This study aimed to evaluate, with the aided of three points static bending test, the modulus of elasticity of OSB using recommendations of the European Standard EN 310:1993, combined with an alternative method of calculation based on the least square method. In this case, three displacement values are taking in account to stiffness determination, improving reliability on it. Results of the ANOVA indicated no statistical equivalence between moduli of elasticity obtained by the two methods of calculation. Modulus of elasticity of this technique proved to be 7% lower than the elastic modulus obtained by standard EN 310:1993, revealing be important the use of suggested approach.