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Research Article
Evaluating the SWS bolted
connection strength of Bitis wood
Erwan Sukarman1, Abdul Razak Abdul Karim1, Norazzlina M.Sa’don1, Abdul Azim Abdullah1, Siti Hanim Sahari2, Nur Liza Rahim3, Pierre Quenneville4
1Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), Malaysia
2Research, Development and Innovation Division, Forest Department Sarawak (FDS), Malaysia
3Faculty of Civil Engineering Technology, Universiti Malaysia Perlis (UniMAP), Malaysia
4Faculty of Engineering, The University of Auckland (UoA), New Zealand
Keywords
Abstract
Bitis wood;
Bolted connection;
Wall-diaphragm connection;
Timber Standard
The current study was conducted to evaluate the strength of the steel-wood-steel (SWS) bolted connections of Bitis wood. The wood was chosen because it is commonly used as the structural elements of the as-built floor and roof diaphragms in Malaysian unreinforced masonry (URM) buildings. This present work was performed to continue the initiation of the wood database development for the purpose of retrofitting the wall-diaphragm connections of the URM building. The bolted connection testing was the main experimental investigation, where a total of eighteen groups of different connection configurations were tested, each consisting of ten specimens. The embedding strength tests, moisture content and density tests were also conducted to determine the wood's basic properties. The results obtained from this experimental study were utilized for verifying the prediction effectiveness of the existing design equations, namely the Malaysian Timber Standard (MS544-5), the European Yield Model (EYM), and the Row Shear Model (RSM). From the comparison made between the prediction values and the experimental results, the MS544-5 was found to be too conservative, whereas a combination of the EYM and RSM is recommended for predicting the bolted connection strength of the Bitis wood.
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