Effect of Span-to-depth Ratio on Flexural Properties of Wood Filled Steel Tubes

This paper presents the results of experimental investigation to study the effect of span-to-depth ratio on flexural properties of teak wood filled steel tubes. The effect of span-to- depth ratio on teak wood and steel tube has also been carried out. It is observed that smaller span to depth ratio gives lower values of Modulus of Elasticity (MOE) and Modulus of Rupture (MOR) because of shearing effect. In case of higher spans the beam is subjected to pure bending and hence flexural properties are higher in all three cases of the beams. The span to depth ratios used in this paper also prove that they are inline with recommendations of ASTM procedures for determining the flexural properties of wood and wood based composites. The studies carried out prove that recommendations of the standards for wood and wood composites can very well be extended to wood filled steel tubes.