Abstract
Brazilian Architecture has shown constant changes in techniques and construction materials reflecting on the quality of buildings. In the case of sound insulation of dwellings, the result, in general, has been negative. With the advent of the NBR 15575, published in 2013 by the “Associação Brasileira de Normas Técnicas - ABNT”, which establishes minimum requirements for the various elements of construction in favor of the performance of buildings, construction companies will have to adapt the new construction to the limits and requirements it establishes. The general objective of this work is to evaluate, through field measurements, the level of sound insulation (airborne noise) of two vertical partitions of the living room of an apartment in Maceió-AL-Brazil on two parameters established in NBR 1557: Weighted Standardised Sound Level Difference (D’nT,w) and Weighted Standardised Sound Level Difference of the façade (D’2m,nT,w). It has been found that airborne sound insulation levels are lower than those recommended by the standard, demonstrating the inadequacy, from the acoustic point of view, of the materials used in the composition of the walls. It’s clear the need to assess and to monitor the acoustic performance, and also to present design strategies and constructive interventions for the comfort and privacy of users.
References
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 15575: Edificações Habitacionais - Desempenho. Rio de Janeiro: ABNT, 2013.
CÂMARA BRASILEIRA DA INDÚSTRIA DA CONSTRUÇÃO. Desempenho de edificações habitacionais: Guia orientativo para atendimento à norma ABNT 15575/2013. Fortaleza: Gadioli Cipolla Comunicação, 2013.
FERREIRA NETO, Maria de Fátima. Nível de conforto acústico: uma proposta para edifícios residenciais. 2009. 257 f. Tese (Doutorado em Engenharia Civil) - Programa de Pós-Graduação da Faculdade de Engenharia Civil, Arquitetura e Urbanismo, Universidade Estadual de Campinas, Campinas, São Paulo, 2009.
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. ISO 140-4 Acoustics -- Measurement of sound insulation in buildings and of building elements -- Part 4: Field measurements of airborne sound insulation between rooms. Geneva, 1998a.
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. ISO 140-5 Acoustics -- Measurement of sound insulation in buildings and of building elements -- Part 5: Field measurements of airborne sound insulation of façade elements and façades. Geneva, 1998b. 25p
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. ISO 717-1 Acoustics – Rating of sound insulation in buildings and of building elements. Part 1: Airborne sound insulation. 2nd ed. Geneva, 1996.
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. ISO 3382 Acoustics -- Measurement of the reverberation time of rooms with reference to other acoustical parameters. Geneva, 1997.
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