Acoustic design through predictive methods in Cross Laminated Timber (CLT) panel structures for buildings

Industrialization is a strategic trend in the construction sector that offers several distinct advantages over traditional construction: Tight costs, minimization of work-related accidents, on-site construction time reduction, etc. However, when prefabricated or lightweight construction solutions are used in buildings, standardized methods to design and predict the acoustic performance of buildings from the performances of elements EN 12354-1 and -2, are no longer valid. As consequence, further work is needed related to the laboratory characterization of building systems, the behavior of junctions between prefabricated and/or lightweight components, the use of resilient materials, etc. This paper shows the results of R&D activities carried out to predict the acoustic behavior of cross laminated timber buildings. A two storey experimental facility has been built for the characterization of vibration attenuation in junctions. An approach of flanking transmission characterization method based on EN 10848 series has been used.