INVESTIGATION OF COMPRESSIVE STRENGTH CHARACTERISTICS OF STRUCTURAL-SIZED ARERE (Triplochiton scleroxylon) AND EMI (Vitellaria paradoxa ) TIMBER COLUMNS GROWN IN NIGERIA
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Date
2019
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Adama Science & Technology University, Ethiopia. Available online at: https://ejssd.astu.edu.et/index.php/EJSSD/article/view/96/35
Abstract
Structural reliability was examined on the lesser-used species such as Arere (Triplochiton scleroxylon) and Emi
(Vitellaria paradoxa) which can be good substitute to the well-known species. The strength and physical properties of these timber species were determined to predict the suitability of the species as structural material. Twenty lengths of timber species of 50 x 50 mm cross-section were purchased from timber market in Ilorin, Nigeria. The prevailing environmental conditions during the test were 31oC and 64% relative humidity. The properties tested included; air dry density, moisture content and compressive strength parallel to grain of twenty (20) test specimens each of lengths, 200, 400, 600 and 800 mm done in accordance with the British Standard BS 373 (1957). Mean air-dried moisture content for Arere and Emi were 14.48 and 15.89 %
respectively. Mean density of Arere and Emi were 514.32 and 1147.75 kg/m3 respectively. The reliability index of Arere and Emi timber species are 0.64 and 0.65 respectively for a service life of 50 years, assuming all other design conditions are met.
Description
Article on timber
Keywords
Arere, Compressive strength, Emi, Reliability, Slenderness ratio