Structural reverberation time and building acoustic performance

Abstract : ISO 12354 standard series describe how to evaluate building acoustic performance based on building element acoustic performance. Laboratory and in-situ structural reverberation time are necessary parameters for this evaluation. Laboratory structural reverberation time has been measured on several types of heavy wall and floor; and these measurement results are compared to values obtained from Annex C of ISO 12354-1 standard, the ISO 10140-5 standard limit values as well as values used in the Acoubat software. In-situ measurements have also been carried out in the past and on more recent buildings. Assumptions previously taken within the Acoubat software are discussed and changes integrated within the new AcoubatBIM software introduced. The effect of the reverberation time choice on the building acoustic performance is evaluated.