Influence of Edgewise Shearing Modulus of Elasticity of Web on StaticBending Deflection of Wood IBeam

The shearing property of bamboo waferboard (BW), wood oriented strand board (OSB) and structural plywood (SPly) and the static bending deflection of the Ibeam (IB) webbed with those panels were tested respectively. The results showed that there was negative power exponent correlation between the web′s edgewise shearing modulus of elasticity (MOES) and either the shearing or the whole deflection in staticbending of the IB. Therefore, the unfavorable effect from the poor MOES on the static bending deflection should not be neglected with the consideration of the span in structural application. Also it was identified that the BW, OSB or SPly with proper MOES could meet the shearing requirement for the web. Conclusively, this paper proposed that the criteria indexes with the test method for MOES of the structural panels for web manufacture and the bending deflection including the edgewise shearing deflection with the practical engineering calculation should be added into the corresponding Chinese national standards, or the relevant standards should be modified.