Abstract
The acoustic performance of a CLT based building mockup was investigated within the scope of AdivBois acoustic technical commission with the objective of defining wood building constructions fulfilling requirements. The CLT based building is a three floor construction, with four rooms on each level. Acoustic measurements from junction characterization to air-borne and impact sound insulations have been performed. Apparent wood is supposed to have positive effect on health and well-being on building occupants. This paper concentrates of the effect of apparent wood on the acoustic performance : the apparent wood can be either the underside of the CLT floor (i.e., no suspended ceiling) or posts and beams possibly continuous between different rooms. The measured results are discussed with respect to prediction. A simple approach to take into account the through beams or posts is proposed. Recommendations concerning apparent wood elements in buildings are imparted.
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