Determination of the Properties of Some Selected Timber Species for Structural Application

One of the alternative sustainable and green construction materials to concrete is timber. Timber numerous varieties, this acts as a barrier extent its usage, especially in structural application. Despite many researches on wood’s mechanical physical properties, only few are geared toward application wood. The present work investigated properties five timber species; Gmelina arborea, Tectona grandis (Teak), Terminalia superba (Afara), Ayin (Anogeissus leiocarpus), Acacia (Robinia pseudoacacia), determine their suitability for constructing long-span roof trusses. These available South Western part Nigeria. Their properties; bending strength, compressive shear tensile Modulus Elasticity (MOE), Rupture (MOR), density, were determined laboratory. results obtained showed that all types, except have higher values than obtainable classes strength D30 class D70 British Code Practice. It means these species quality stipulated code. also show order relevance design (or work) Arborea, (Teak). (Afara) not recommended works.