Ultimate strength design of axially loaded ayin (&lt;i&gt;Anogeissus leiocarpus&lt;/i&gt;) timber columns

Jimoh, A.A.

doi:10.4314/jast.v10i1.17449

Cited by 3 publications

(4 citation statements)

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“…When the column is considered as short, the axial stress according to Jimoh (2005) is given by the expression…”

Section: Analysis Of the Columnmentioning

confidence: 99%

“…When the column is considered as short, the axial stress according to Jimoh (2005) is given by the expression where P is the load supported by the cross-sectional area A. For long columns, the equation given by Euler is where P is the maximum critical load, E is the elastic modulus, L is the effective length of the column and I the Moment of Inertia.…”

Section: Analysis Of the Columnmentioning

confidence: 99%

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Comparative reliability assessment of a solid, box and I-section Nigerian-grown African birch (Anogeissus leiocarpus) timber column

Wilson

Adedeji

Alomaja

et al. 2020

International Wood Products Journal

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A structural reliability analysis was carried out on the Nigerian-grown African birch timber to ascertain its performance as a structural timber column for solid, box and I built-up sections using FORTRAN language. By varying its depth, length and the axial load supported by the column, results obtained reveal that the timber is adequate for use as solid timber column at a depth and breadth of 150 mm, an effective height of 3600 mm and an axial load of 260 kN with its probability of failure as 8.85 × 10 −3 . The corresponding I-section was found to be unsafe, whereas the box-section supported the design load with a probability of failure of 1.6 × 10 −6 . For the design dimension (150 × 150 mm), the solid section has a compressive capacity twice that of the I-section. The box-section has a capacity three times that of the I-section and twice that of the solid section at increased loads.

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“…When the column is considered as short, the axial stress according to Jimoh (2005) is given by the expression…”

Section: Analysis Of the Columnmentioning

confidence: 99%

Section: Analysis Of the Columnmentioning

confidence: 99%

Comparative reliability assessment of a solid, box and I-section Nigerian-grown African birch (Anogeissus leiocarpus) timber column

Wilson

Adedeji

Alomaja

et al. 2020

International Wood Products Journal

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show abstract

“…The corresponding Euler stress experienced by the slender column can consequently be expressed by the expression (Jimoh, 2005) = ( / ) (9)…”

Section: Analysis Of the Columnmentioning

confidence: 99%

Reliability-Based Design of Solid and Nail-jointed I-Section of Nigerian-Grown African Birch (<i>Anogeissus leiocarpus</i>) Timber Column

Wilson¹,

Adedeji²,

Oriola³

et al. 2019

Journal of Applied Sciences and Environmental Management

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The Nigerian-grown African birch timber was used to assemble I-section specimens which were tested in the laboratory for their compressive strengths. Solid square sections of the same specie were similarly tested for an apt comparison of results. A structural reliability analysis was carried out for these two sections to ascertain their performance as structural timber columns using statistical parameters that were determined for the deterministic design of the timber column. A FORTRAN-based program was also developed and used for the reliability analysis of the Nigerian-grown

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“…It can reproduce by seeds as well as vegetative propagation. Jimoh (2005) worked on ultimate strength design of axially loaded Ayin (Anogeissus leiocarpus) timber columns having the Compression parallel to grain value of 54.35 N/mm for 20 x 20 x 80 mm standard specimen dimension (scaled down). Adeyemi et al (2016) also carried out a review on African birch (Ayin) timber.…”

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confidence: 99%

Some physical and mechanical properties of African birch (<i>Anogeissus leiocarpus</i>) timber

Bello¹,

Jimoh²

2018

Journal of Applied Sciences and Environmental Management

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ABSTRACT:The use of locally manufactured or waste materials in structural buildings without loss of performance is very crucial to the growth of developing countries. This report provides the results of some physical and mechanical property tests carried out on air dried African birch (Anogeissus leiocarpus) timber grown in Nigeria. Samples of the African birch timber were procured, naturally seasoned and their properties determined, in accordance with British Standard BS 373, for moisture content, specific gravity, and density while mechanical tests carried out are for tensile, compression and static bending. Strength values were obtained and further converted to 18% moisture contents (MC) which is the acceptable moisture content of timber to be used in Nigeria. The result of this experiment revealed that African birch timber possess a tensile strength of about 16% the strength of high yield steel and about 31% the strength of mild steel at 18% MC. Also, strength properties of African birch timber perpendicular to grain were found to be much lower than its strength properties parallel to grain.

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Ultimate strength design of axially loaded ayin (<i>Anogeissus leiocarpus</i>) timber columns

Cited by 3 publications

References 0 publications

Comparative reliability assessment of a solid, box and I-section Nigerian-grown African birch (Anogeissus leiocarpus) timber column

Comparative reliability assessment of a solid, box and I-section Nigerian-grown African birch (Anogeissus leiocarpus) timber column

Reliability-Based Design of Solid and Nail-jointed I-Section of Nigerian-Grown African Birch (<i>Anogeissus leiocarpus</i>) Timber Column

Some physical and mechanical properties of African birch (<i>Anogeissus leiocarpus</i>) timber

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