Proceedings of the 54th International Congress and Exposition on Noise Control Engineering

AIRBORNE SOUND INSULATION OF FAÇADES AND THE CRITERIA FOR THE INTERIOR SOUND PRESSURE LEVEL IN DORMITORIES IN BRAZIL

Published in 25/09/2025 - ISBN: 978-65-272-1573-8

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Paper Title
AIRBORNE SOUND INSULATION OF FAÇADES AND THE CRITERIA FOR THE INTERIOR SOUND PRESSURE LEVEL IN DORMITORIES IN BRAZIL
Authors
  • Murilo Cardoso Soares
  • Matheus Ribeiro Costa
  • Carlos Eduardo de Oliveira Jacobini
  • Raquel Rossatto Rocha
  • José Carlos Giner
Modality
Onsite-Oral
Subject area
11.1. Requirements, Classification Schemes & Standards in Building Acoustics
Publishing Date
25/09/2025
Country of Publishing
Brazil | Brasil
Language of Publishing
en-US
Paper Page
https://www.even3.com.br/anais/international-congress-exposition-noise-control-engineering/1074262-airborne-sound-insulation-of-facades-and-the-criteria-for-the-interior-sound-pressure-level-in-dormitories-in-br
ISBN
978-65-272-1573-8
Keywords
sound insulation of façades, interior sound pressure level, road traffic, brazilian standards
Summary
In Brazil, the ABNT NBR 15575-4:2021 standard specifies the criteria for airborne sound insulation of façades in buildings in terms of the parameter D2m,nT,w. These criteria were established in reference to the interior sound pressure level limit in dormitories set by ABNT NBR 10152:2017, which specifies that LAeq must be below 35 dB. This study investigates whether meeting the required façade sound insulation ensures that the interior sound pressure level is within the prescribed limit. The results show that this is not the case. One reason investigated is that the ABNT NBR 15575-4:2021 criteria consider a standardization to a reference reverberation time of 0.5 s. However, it is shown that even applying the same standardization to the interior sound pressure level, the criteria of ABNT NBR 10152:2017 would not be met yet. The other reason investigated was the noise profile considered to obtain the parameter D2m,nT,w. In Brazil, the primary source of incident noise on façades is road traffic. When the spectrum adaption term Ctr is taken into consideration, the results are much closer to what would be expected considering the interior sound pressure levels obtained.
Title of the Event
Inter-Noise 2025
City of the Event
São Paulo
Title of the Proceedings of the event
Proceedings of the 54th International Congress and Exposition on Noise Control Engineering
Name of the Publisher
Even3
Means of Dissemination
Meio Digital

How to cite

SOARES, Murilo Cardoso et al.. AIRBORNE SOUND INSULATION OF FAÇADES AND THE CRITERIA FOR THE INTERIOR SOUND PRESSURE LEVEL IN DORMITORIES IN BRAZIL.. In: Proceedings of the 54th International Congress and Exposition on Noise Control Engineering. Anais...Sao Paulo(SP) WTC Events Center, 2025. Available in: https//www.even3.com.br/anais/international-congress-exposition-noise-control-engineering/1074262-AIRBORNE-SOUND-INSULATION-OF-FACADES-AND-THE-CRITERIA-FOR-THE-INTERIOR-SOUND-PRESSURE-LEVEL-IN-DORMITORIES-IN-BR. Access in: 09/05/2026

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