Load displacement parameters of metal plate connection in Kempas and Meranti
Limited studies have been carried out on metal plate connection for Malaysian hardwoods. The purpose of this study is to examine and verify the metal plate connection theoretical model of relative displacements between plate and wood member of metal plate connection as given by Foschi. Eighty metal...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Published: |
2002
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/5742/ http://eprints.uthm.edu.my/5742/1/WCTE2002_Paper_DY.pdf |
| Summary: | Limited studies have been carried out on metal plate connection for Malaysian hardwoods. The purpose
of this study is to examine and verify the metal plate connection theoretical model of relative
displacements between plate and wood member of metal plate connection as given by Foschi. Eighty
metal plate connected tensile joints consisting of 50 mm (t) x 100 mm (w) kempas and meranti were
tested separately as single species for their ultimate tensile strength in accordance with AS 1649 –
1998. Metal plate connectors of a single type from a foreign system provider available in the local truss
industry were used. The size of the plates employed was 100 mm (w) x 100 mm (l) x 1.0 mm (t). For
each test specimen, specific gravity and oven-dried moisture content were determined and modes of
failure were observed. Complete load - displacement data for each specimen were recorded and plotted
with the aid of computer. The data and graphs were analyzed according to Foschi’s approach to derive
the load – displacement parameters, maximum load per tooth, and load per tooth at critical slip. The
load – displacement parameters include stiffness of the connection, tangent at yield point and the yintercept
of the tangent line. It is found that there was an increasing correlation between stiffness and
specific gravity of timber. The stiffness value is also found to have a significant effect on the design
load per tooth. However, the stiffness of the connection varies significantly with the timber and plate
orientation. This study has verified the findings of Foschi experimentally and is useful for the
derivation of basic working load of metal plate connections for Malaysian hardwoods. It will be able to
contribute significantly to MS544: Part 8: 1999 Draft. |
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