Avaliação do desempenho acústico de fachadas de habitações dos programas Casa Fácil Paraná e Casa verde e Amarela

Abstract

With the accelerated urbanization process in cities, noise generation has become increasingly present in people's daily lives. These noises, coming from various sources, can significantly affect the quality of life of the population, making acoustic comfort essential. Thus, this study aimed to analyze the acoustic insulation of the facade of a building that belongs to the programs Casa Verde e Amarela and Casa Fácil Paraná. For this purpose, field measurements were performed guided by ABNT NBR ISO 16283-3:2021 through the engineering method, with standard and low frequency procedures. With the assistance of measurement equipment it was possible to collect the data, which was then analyzed by specific software. The value obtained for the acoustic insulation of the facade was 26 dB, with adaptation spectrums C50-3150 = -1 e Ctr,50-3150 = -3. Therefore, it was possible to verify that the analyzed element meets the minimum performance requirements of the ABNT NBR 15575-4:2021 standard for a noise class I, even considering the low frequencies and the adaptation spectrum. Therefore, we conclude that it is necessary to conduct further studies to verify the influence of low frequencies in the façade building systems, in addition to the importance of revising the Brazilian performance standard ABNT NBR 15575-4:2021 to include in the evaluation the adaptation spectrum at low frequencies.