Variation in density and some strength properties of sapwood and heartwood of Afzelia Africana Sm. ex Pers. and Daniella oliveri (Rolfe) Hutch. and Dalz. in Makurdi, Nigeria

摘要

Structural timber species like A. africana and D. oliveri commonly in use require adequate information of the inherent strength properties and durability to guide end user on applications in design and construction purposes. This study therefore investigated the variation in density, compressive strength perpendicular to grain (CSPG) and compressive strength parallel to grain (CSLG) and Modulus of Rupture (MOR) between the heartwood and sapwood of A. africana and D. oliveri. The study was conducted in Federal University of Agriculture Makurdi. Wood samples were collected from Alaide, Gwer West Local Government Area (LGA) of Benue State. Experimental designs for this study were 2x2x4 factorials in Completely Randomized Designs (CRD) with 4 replicates. There were 2 wood species, 2 wood portions, and 4 replicates. Data was analyzed with Analysis of Variance (ANOVA) and mean was separated with Fisher-s Least Significant Difference (LSD) at p.