Effects of creosote oil on the mechanical properties of selected Uganda timbers

This study investigated the effects of creosote oil preservative on the properties of commonly used Uganda timber. The modulus of elasticity and the compressive strength were measured both parallel to and perpendicular to the grain. This is the first time that the values perpendicular to the grain have been reported. The relative density (p) of each type of timber investigated as measured. The values of the MOE in compression/tension parallel to the grain were measured to a confidence limit of 4 percent. The values obtained were in good agreement with those obtained by earlier researchers. The MOE values were used to calculate the anisotropy values, in the small strain approximation. The compressive strength measurements parallel to the grain were related to the relative densities and are exponent n = 1.00 plus or minus 0.02 was obtained. The compressive strengths perpendicular to the grain were related to the relative density through the exponent n, which was determined to be 2.55 plus or minus 0.05.

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