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Conforto acústico de escritórios em ambiente industrial de usina hidrelétrica
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Palavras-chave

Conforto acústico
Escritórios
Ambiente industrial
Interferência na fala.

Como Citar

MARTINS, R. V.; MIRANDA, E. F. V. Conforto acústico de escritórios em ambiente industrial de usina hidrelétrica. PARC Pesquisa em Arquitetura e Construção, Campinas, SP, v. 10, p. e019029, 2019. DOI: 10.20396/parc.v10i0.8653712. Disponível em: https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8653712. Acesso em: 29 fev. 2024.

Resumo

A clareza na comunicação, o conforto e a concentração da atenção são fundamentais no desempenho e produtividade dos profissionais que utilizam escritórios em ambientes industriais. A avaliação do conforto acústico nesses escritórios deve considerar a medição de níveis de pressão sonora (NPS), de tempos de reverberação (TR), bem como a quantificação do ruído de fundo e da inteligibilidade da fala. A presente pesquisa teve como objetivo avaliar o conforto acústico de ambientes de escritórios situados na casa de força de uma usina hidrelétrica. Para tanto, a investigação baseou-se na avaliação da interferência do ruído de fundo e do TR na inteligibilidade da fala em seis ambientes de três escritórios, a partir de medições de NPS, da quantificação e análise das curvas critério de ruído NC e RC Mark II, e do Índice de Transmissão da Fala (STI). Os seis ambientes internos também foram avaliados pelo cálculo do TR de Sabine e Eyring. Todos os ambientes não atenderam ao critério de conforto da curva NC 40, apresentando espectros desbalanceados entre 125 e 500 Hz e vibrações perceptíveis nas baixas frequências (16 ou 31,5 Hz) que superaram os 75 dB. Quatro ambientes atenderam aos valores de TR recomendados, mantendo-se entre 0,3 e 0,5 segundo. O STI foi classificado entre ruim e razoável, variando entre 0,2 e 0,5. Conclui-se que ambientes industriais como casas de força de usinas hidrelétricas semelhante as estudadas não favorecem a instalação de escritórios sem interferência no conforto acústico e na comunicação oral dos usuários, sendo necessário um projeto adequado para utilização prolongada em trabalhos intelectuais.

https://doi.org/10.20396/parc.v10i0.8653712
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Referências

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