Abstract
New housing projects aim to meet at least the minimum levels established by the Brazilian standard for residential buildings performance, NBR 15575:2013. However, it is not uncommon to find buildings that fail to meet its criteria. This paper presents a case study consisting of the acoustic modelling of a dwelling in a social housing project, with the aim of finding a better solution for the building’s vertical internal walls. Measurements were performed inside the dwelling and a numerical model was generated using the ray tracing method. The model was calibrated by experimental D nT,w (weighted standardized level difference) and used to perform numerical simulations of various configurations. Finally, the results of the solution configurations are discussed with regards to their acoustic performance.
Keywords:
Acoustic performance; Numerical simulation; Ray tracing; NBR 15575