Abstract
Timber is one of the oldest materials used as main structural element prior concrete and steel which have greater ability to sustain load. The greater demand for timber as construction materials, the wood engineering introduced a new timber type called Engineered Wood Product (EWP). The crucial problem in the timber structure which focuses on the structural timber connection. The load-carrying capacity of the timber connection and the failure modes can be determined according to the European Yield Model (EYM). Three-point bending test was used to determine yield moment of the fastener, My, bolt bending strength, Fyb and average R-value for three selected different bolt diameters which are 12, 16 and 20 mm. The results were obtained for comparing between three bolt diameters with F2%, F5% and Fmax respectively. The F2% for 12, 16 and 20 mm yield moment of the fastener, My was obtained 596.4, 1631.5 and 4650 kNmm accordingly while for bolt bending strength, Fyb was 2.1, 2.4 and 3.5 kN correspondingly. The F5% for 12, 16 and 20 mm yield moment of the fastener, My was obtained 631.1, 1668.3 and 4895.6 kNmm accordingly while for bolt bending strength, Fyb was 2.2, 2.4 and 3.7 kN correspondingly. The Fmax for 12, 16 and 20 mm yield moment of the fastener, My was obtained 828.2, 2290.8 and 6545.4 kNmm accordingly while for bolt bending strength, Fyb was 2.9, 3.4 and 4.9 kN correspondingly. The average R-value for 12, 16 and 20 mm bolt diameter was 0.50214, 0.42768 and 0.42038 individually. In conclusion, the percentage difference for F2% bolt bending strength, Fyb between 12 and 16 mm has raised about 14% whereas 16 and 20 mm has shown 46% increased.
Keywords:
Engineered Wood Product, European Yield Model, Three-Point Bending Test, Yield Moment, Bolt Bending Strength.