Evaluation of Wood Properties of C. albidum Tree Grown in Akinyele Local Government Area of Ibadan, Nigeria in Relation to its Utilization

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Fruit trees are hardly ever sought for their wood until recently. Fruit trees like C. albidum is now being used for structural and non structural purposes in city suburbs. This study investigated wood properties and few tree characteristics of C. albidum grown in Akinyele Local Government Area (ALGA), Ibadan, Oyo State, Nigeria. The aim was to mitigate the dearth of information on these features in relation to its utilization. Samples were collected from five emerging settlements in the study area while structured questionnaire and on-the-spot assessment were the instruments employed for data collection during survey stage. Physical appearance, moisture content (MC), green and oven-dry density, specific gravity of oven-dry samples, natural durability against termite, modulus of elasticity (MOE) and modulus of rupture (MOR) were determined via experimentation. Samples used for static bending strength were prepared in accordance with ASTM D 143 standard of 1991. The obtainable mean bole length, basal, middle and top girths were 4958mm, 1823mm, 1473mm and 1427mm respectively and the tree is moderately buttressed. The wood is brownish-white, crossed grain, coarse textured and fairly resistant to termite attack. Averagely on wet basis, MC and density are 52.46 %, 949 kg/m3 respectively and dry density is 739 kg/m3. Also MOR and MOE are respectively 1964N/mm2 and 1163.60N/mm2. The wood density compares with that of few commercially known tree species in N7-strength group thus preferred for non-structural than structural use especially when high bending stress is required.

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335-341

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October 2011

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] Adewole Adedapo. N., Design And Fabrication of a Two Meter Span of 4 – Web Pratt Truss Using Psidium Guajava L. (Guava) Wood, An M. Sc Thesis from the Department of Agricultural Engineering, University of Ibadan, Nigeria, 2002, 120Pgs.

Google Scholar

[2] Timber Research and Development Association (TRADA), Timbers of the word. Vols. 1 & 2. Longman, New York, 1980, 394pp.

Google Scholar

[3] Dargavel J and Sheldon G 1987. Prospects for Australian Hardwood Forest, Centre for Resource and Environmental Studies, Australian National University, Canberra, 1987, 94pp.

Google Scholar

[4] Kretschmann E. David and Green W. David 1999. Mechanical Grading of Oak Timbers Journal of Materials in Civil Engineering, Vol. 11, No. 2, May, 1999, 7pp.

DOI: 10.1061/(asce)0899-1561(1999)11:2(91)

Google Scholar

[5] Lucas E. B, Factors Preventing Wider Commercialization of Nigerian Tree. Forest Product Journal. 33(5), 1983, Pgs 64-68.

Google Scholar

[6] Federal Ministry of Environment, A review of Nigeria's Wood Resources. An Invited Paper at a Seminar on Wood Products Industry to Federal Department of Forestry, Federal ministry of Environment, Abuja, Nigeria. 2005, 157Pgs.

DOI: 10.22271/2582-3744.2020.jun.74

Google Scholar

[7] Zziwa A., M. Bukenya, O. E. Sseremba and R.K. Kyeyune, Non-traditional tree species used in the furniture industry in Masaka District, Central Uganda. Uganda Journal of Agricultural Sciences, 12(1), 2006, 57-66.

Google Scholar

[8] Unasylva, Lesser-known tropical wood species : How bright is their future? No. 145 www. fao. org/docrep/q9270e/q9270e02. htm downloaded in May 2010- Cached.

Google Scholar

[9] ITTO. 1993a. The Economic Linkages between the International Trade in Tropical Timber and the Sustainable Management of Tropical Forests. http: /www. fao. org/docrep/w4388e/w4388e0p. htm accessed on may 17, (2007).

Google Scholar

[10] Tsoumis, G.T., Science and technology of wood: structure, properties, utilization New York, N.Y. Van Nostrand Reinhold, 1991, 494 pp.

Google Scholar

[11] Kliger, R., Mechanical properties of timber products required by end-users. Proceedings of World Conference on Timber Engineering, 31st July - 3rd August 2000. Whistler, Canada.

Google Scholar

[12] Lucas E. Olorunnisola A. and Adewole N, Preliminary evaluation of (Psidium guajava l. ) Tree Branches for Truss Fabrication in Nigeria. Agricultural Engineering International: the CIGR Ejournal. Manuscript BC05010. Vol. May, 2006, 11Pgs.

Google Scholar

[13] FPL, Wood handbook: Wood as an Engineering Material. Published by McGraw Hill, Illinois Madison Wisconsin New York, 1999, 2369Pgs.

Google Scholar

[14] American Society for Testing and Materials (ASTM), Annual Book of ASTM Standards. (Reference: D 2016 – 74 and D 143) Vol. 04. 10 (Wood), published by West Conshohocken, Pennsylvania, PA 19428, USA. 1998, 3362Pgs.

Google Scholar

[15] Faherty K. F and Williamson T.G., Wood Engineering and Construction Handbook Published by McGraw-Hill Handbook. 3rd Edition, 1994, 987Pgs.

Google Scholar

[16] Alade, G.A. and Lucas E.B., Timber Connector: a Major Contributor to Structural Failure in Wooden Components in Nigeria. Paper Presented at the 36th Annual Meeting of the Forest Products Research Society, Mechanical Fastening Session, New Orleans, U.S.A. 1982, 22 Pgs.

Google Scholar

[17] Nigeria Code of Practice (NCP), Code of Practice for the Structural Use of Timber. 1973, 37Pgs.

Google Scholar