Building acoustic performance prediction - Feedback from Adivbois CLT building mockup

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. Measurements from junction characterization to air-borne and impact sound insulations have been performed. Furthermore, acoustic measurements have been performed before and after linings and floor coverings were implemented. Moreover, several acoustic teams have carried out measurements in the building. This paper concentrates on the comparison between measured acoustic performance and the predicted one. Predictions are based on the EN ISO 12354-1 and -2 standards, using floor and wall acoustic performances measured in laboratory conditions. The effect of inserting resilient layers in junctions, floor covering and receiving room size is discussed.