Flanking transmission in CLT buildings: comparison between vibration reduction index measurements for different mounting conditions

During a research on the optimization of the mechanical performances of CLT building elements to respond to particular needs for the improvement of seismic design, a measurement campaign of vibration reduction index was carried out on a large-scale test setup. The large scale set up allows to build up to eight adjacent and/or overlaid rooms, performing, eventually, simultaneous measurements of vibration reduction index and sound reduction index according respectively ISO 10848 and ISO 16283 series. At the first stage of the research, a comparison between different connection techniques of CLT building elements was made, with the aim of pointing out interactions between wooden elements and resilient layers connected by different types of fixing systems.