Bending Strength Properties of Malaysian Tropical Timber in Structural Size

Puaad, M. B. F. M.; Ahmad, Zakiah; Yamani, Shaikh Abdul Karim

doi:10.1007/978-981-10-0155-0_73

Cited by 2 publications

(7 citation statements)

References 4 publications

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“…Timber is one of the preferred materials to be used for structure and building elements, such as flooring beams, columns and joins, and also as bearing loads in construction [1].…”

Section: Background Of Structural Size Timbermentioning

confidence: 99%

“…There are many factors to be considered in designing timber structure such as moisture content, natural and non-natural defects, loading criteria and etc. In order for these timbers to be used as structural and non-structural application, it is important to provide the information on the physical properties that affect the mechanical properties of timbers [1].…”

Section: Background Of Structural Size Timbermentioning

confidence: 99%

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A Review of Shear Properties for Malaysian Tropical Timber in Structural Size

Puaad

Ahmad

Aziz

et al. 2021

MSF

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In recent years, the studies on producing data on physical and mechanical properties of Malaysian timber specimens have evolved from small clear specimen to structural size specimen, where most of the research method was based on the American Standard Testing Manual ASTM D198. Numerous data regarding mechanical properties on structural size specimen have been produced through this method, such as bending and compression test. Unfortunately, studies on shear properties on structural size timber are very scarce. It has reviewed that the global timber researchers are focusing to produce data on shear properties of European timber species such as Oak, Spruce and Pine where both shear strength and shear modulus data were obtained from bending and torsion test. Furthermore, from the review of the existing literature, it is clear that there is no proper studies focusing on development of shear properties of Malaysian tropical timber, especially torsion test in accordance with EN 408:2010. Therefore, the aim of this study is to investigate the shear properties (shear strength and shear modulus) of Malaysian Tropical Timber in large size.

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“…Timber is one of the preferred materials to be used for structure and building elements, such as flooring beams, columns and joins, and also as bearing loads in construction [1].…”

Section: Background Of Structural Size Timbermentioning

confidence: 99%

Section: Background Of Structural Size Timbermentioning

confidence: 99%

A Review of Shear Properties for Malaysian Tropical Timber in Structural Size

Puaad

Ahmad

Aziz

et al. 2021

MSF

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“…Keenen (3) has identified that the shear block test is inappropriate for estimating the actual shear strength of structural-sized timber, as it includes stress concentrations and does not account for the influence of defects and orthotropy. Due to the variability in the timber properties, the mechanical behaviour of timber cannot be derived with any reliability from properties of small defect less timber (4). The grade stresses in Tables 1 and 2 given in MS 544 Part 2: 2001 such as tension, compression and bending stresses were obtained as a factor of small clear timber stresses.…”

Section: Introductionmentioning

confidence: 99%

“…The grade stresses in Tables 1 and 2 given in MS 544 Part 2: 2001 such as tension, compression and bending stresses were obtained as a factor of small clear timber stresses. Clear timber refers to clear and defect-free small clear timber that are commonly used in laboratory investigations involving standard tests (4). Furthermore, the Code of Practice MS 544: Part 2: 2001 gives recommends obtaining the data from the structural size sample of Malaysian timbers (5).…”

Section: Introductionmentioning

confidence: 99%

“…As in Malaysia, studies on shear properties on structural size timber are very scarce. Numbers of data regarding mechanical properties on structural size specimen have been produced based on this method such as bending, compression, tension and block shear strength properties (4,5,12,13,14). However, San (14) has conducted a study that focused more on the obtaining the mechanical properties in accordance with ASTM D-198 of engineered timber product (LVL), rather than solid timber specimen.…”

Section: Introductionmentioning

confidence: 99%

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Torsional Shear Strength Properties of Malaysian Tropical Timber in Structural Size

et al. 2020

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The shear strength of timber joists in timber design is important, especially to provide an adequate torsional stability and to avoid vibrational serviceability problems. In Malaysia, the data of shear strength of timber is available in MS544 Part 2. The data were developed by shear block test with small samples without defect known as small clear samples. Torsion test is one of the other approaches that can be used to attain the state of pure shear as it does produce a purer and a clearer shear stress distribution in the specimen, allowing measurement of the pure shear properties. However, in Malaysia, very little attention has been paid to the use of the torsion test in evaluating shear strength. Therefore, this study aims to investigate the torsional shear strength of selected Malaysian tropical timbers of different strength groupings (SG) namely Balau (SG1), Kempas (SG2), Kelat (SG3), Kapur (SG4), Resak (SG4), Keruing (SG5), Mengkulang (SG5), Light Red Meranti (SG6), and Geronggang (SG 7) using structural size timbers in accordance with BS:EN 408 and then compared with published by MS554: Part 2. The result shows contradictions of strength grouping between findings and published by MS554: Part 2. Resak (SG4) and Mengkulang (SG5) grade stress value have risen towards SG 3. Geronggang is currently in the SG6. Also from the findings, Kelat (SG3), Kapur (SG4) and Keruing (SG5) grade stresses are at par towards each other, even though they are completely in the different strength group as stated in MS544: Part 2. In conclusion, shear strength data need to be re-examined, since the strength for the tested specimen is much higher than the data given in MS 544 Part 2. This will lead to the increment in section and wastage in cost.

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Bending Strength Properties of Malaysian Tropical Timber in Structural Size

Cited by 2 publications

References 4 publications

A Review of Shear Properties for Malaysian Tropical Timber in Structural Size

A Review of Shear Properties for Malaysian Tropical Timber in Structural Size

Torsional Shear Strength Properties of Malaysian Tropical Timber in Structural Size

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