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To cite this version:Helene Unterwieser, Gerhard Schickhofer. Influence of moisture content of wood on sound velocity and dynamic MOE of natural frequency-and ultrasonic runtime measurement. AbstractThis study comprises the analysis of the influence of the moisture content of wood on the dynamic properties -sound velocity and dynamic MOE (considering the density) -of green and dry sawn timber. The main objective was to find applicable functions or factors for the adjustment of the determined properties on the reference condition (moisture content u=12 %) for the moisture content range below and above fiber saturation. Therefore, two dynamic measurement methods -

This paper investigates the mechanical and the hysteretic behaviour of steel-to-timber joints with annular-ringed shank nails in Cross-Laminated Timber (CLT). These fasteners are used to anchor typical metal connectors, such as hold-downs and angle brackets, to the CLT panels. The experimental pro- gramme presented in the paper was carried out at the Institute of Timber Engineering and Wood Technology, Graz University of Technology (Graz, Austria). Average and characteristic values of the exper- imental strength capacities are evaluated and compared to the analytical predictions determined accord- ing to current structural design codes and literature. Furthermore, to fulfil the requirements of the capacity-based design, the overstrength factor and the strength degradation factor are evaluated and con- servative values are recommended

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As a product, cross-laminated timber exhibits widely linear-elastic behaviour (except for compressive stress) and a tendency to have brittle failure mechanisms. Therefore, especially at dynamic loadings (e.g. earthquakes), the behaviour of cross-laminated timber structures is highly dependent on the connections used. Based on several single-joint and wall tests performed monotonically as well as cyclically, this paper provides improved insight into the behaviour of different joints that make up cross-laminated timber structures. In addition to information on the failure modes that occurred and specific values determined by way of experimental tests, interpretations of different contributions towards the overall deflection of the tested wall systems are presented. The influence of different connection types and their combinations within one wall system is another topic discussed. Finally, the sensitivity of resulting test properties concerning the post-processing models used is singled out as a central theme.