Methodology for assessing the sound insulation of the facade of a multiple floor building

Abstract

The objective of this work is to propose a methodology to dimension several floor building's facade sound insulation, according to each floor and the external noise levels. The proposed methodology combines three-dimensional acoustic mapping with a linear graphical comparison. A twenty-six floor building with approximately 82 m high located in downtown Curitiba, PR (Brazil) was taken as an example to apply the methodology. The results have shown that the building is subjected to a three different ranges sound pressure level gradient. For each of these ranges, different facade sound insulation features need to be considered. The combined methodology ensures acoustic comfort for all the occupants of the building without any waste of resources, avoiding insufficient or excessive facade sound insulation.