Considering the entry into force of the standard "NBR 15575: 2013 - Edifícios Habitacionais – Des... more Considering the entry into force of the standard "NBR 15575: 2013 - Edifícios Habitacionais – Desempenho" which sets minimum mandatory values of acoustic performance levels of building systems of dwellings, this research aims to verify the global acoustic behavior of two buildings in Fortaleza city, through the engineering method indicated in the standard, by analyzing the acoustic performance of elements and components used on them and comparing with the required levels. The study deepens analyzing the contribution of the floating floor solution on the acoustic performance of floor system by noise impact, reason of complaints of vertical housing users, by calculating the standardized impact sound pressure level reduction from knowledge of the physical and geometric characteristics of the resilient material used in the system: the dynamic stiffness and thickness. The execution procedure of this solution is presented, noting the care needed to achieve the desired performance, and a case study of the application of acoustic blanket in a building in Fortaleza is displayed. It has been found that building systems used in a study of the buildings do not reach the minimum required acoustic performance by NBR 15575: 2013 in case of airborne noise inner wall and door assembly of separate discrete units and airborne noise to the façade outside. In the second building, it was found that it does not meet minimum performance in the case of domestic air noise blind wall rooms and kitchens from a housing unit and common areas of possible traffic, as hallways and floors staircase. After comparing the minimum acoustic performance impact noise defined by Brazilian standards with the minimum amounts required in other countries, it was found that it is considerably below the international levels, ensuring not, therefore, acoustic comfort to users. The use of expanded polyethylene blanket in thickness 5mm and 10mm under floating floor systems provide the buildings analyzed a superior performance level according to the standard and according to the calculations made for this search. In monitoring the implementation of the blanket in the case study, there were execution errors that can harm the expected performance. It was concluded that the construction systems adopted in the buildings studied in this research should be reviewed by the designers and the floating subfloor solution, using expanded polyethylene blanket, has potential to provide acoustic comfort to flooring systems, as long as it’s properly executed.
Ceará, como requisito parcial para obtenção do grau de Engenheiro Civil. iv Dedico este trabalho ... more Ceará, como requisito parcial para obtenção do grau de Engenheiro Civil. iv Dedico este trabalho aos meus pais Glison e Mirlânia, aos meus irmãos Guilherme e Gustavo, aos meus avós Caetano e Maria Enir, à minha companheira Alessandra. v AGRADECIMENTOS A Deus, quem me capacitou em todos os momentos e providenciou cada experiência e encontro relevantes para a realização deste trabalho. A toda minha família, pela união, educação, oração, paciência, confiança e todos os dons do mais puro e desmedido amor que alguém pode dar e receber. À minha companheira Alessandra, pelo amor baseado na intercessão, na partilha, na espera, na doação e no perdão. Ao meu amigo Moacyr, por acreditar sinceramente no meu potencial. Ao professor Pierre Lamary, pela orientação e por cada encontro realizado no laboratório de vibrações. Ao professor Alexandre Bertini, por me incentivar a estudar acústica, sendo o primeiro a mencionar o termo "desempenho acústico dos edifícios" durante minha graduação. Ao professor Marcondes Araújo, por ser meu primeiro tutor em acústica, ensinando-me conceitos da ciência através da ótica arquitetônica. À professora Verônica, pelo incentivo, pela paciência, pelo seu exemplo de pessoa e por todos os conselhos dados. Ao professor Roberto Bezerra, pela disponibilidade e ajuda na realização de ensaios no laboratório de vibrações. Ao Thiago Souza, por compartilhar os conhecimentos e as experiências em acústica. Aos jovens do grupo de oração Pentecostes, por cada momento de amor, oração e serviço.
Considering the entry into force of the standard "NBR 15575: 2013 - Edifícios Habitacionais – Des... more Considering the entry into force of the standard "NBR 15575: 2013 - Edifícios Habitacionais – Desempenho" which sets minimum mandatory values of acoustic performance levels of building systems of dwellings, this research aims to verify the global acoustic behavior of two buildings in Fortaleza city, through the engineering method indicated in the standard, by analyzing the acoustic performance of elements and components used on them and comparing with the required levels. The study deepens analyzing the contribution of the floating floor solution on the acoustic performance of floor system by noise impact, reason of complaints of vertical housing users, by calculating the standardized impact sound pressure level reduction from knowledge of the physical and geometric characteristics of the resilient material used in the system: the dynamic stiffness and thickness. The execution procedure of this solution is presented, noting the care needed to achieve the desired performance, and a case study of the application of acoustic blanket in a building in Fortaleza is displayed. It has been found that building systems used in a study of the buildings do not reach the minimum required acoustic performance by NBR 15575: 2013 in case of airborne noise inner wall and door assembly of separate discrete units and airborne noise to the façade outside. In the second building, it was found that it does not meet minimum performance in the case of domestic air noise blind wall rooms and kitchens from a housing unit and common areas of possible traffic, as hallways and floors staircase. After comparing the minimum acoustic performance impact noise defined by Brazilian standards with the minimum amounts required in other countries, it was found that it is considerably below the international levels, ensuring not, therefore, acoustic comfort to users. The use of expanded polyethylene blanket in thickness 5mm and 10mm under floating floor systems provide the buildings analyzed a superior performance level according to the standard and according to the calculations made for this search. In monitoring the implementation of the blanket in the case study, there were execution errors that can harm the expected performance. It was concluded that the construction systems adopted in the buildings studied in this research should be reviewed by the designers and the floating subfloor solution, using expanded polyethylene blanket, has potential to provide acoustic comfort to flooring systems, as long as it’s properly executed.
Ceará, como requisito parcial para obtenção do grau de Engenheiro Civil. iv Dedico este trabalho ... more Ceará, como requisito parcial para obtenção do grau de Engenheiro Civil. iv Dedico este trabalho aos meus pais Glison e Mirlânia, aos meus irmãos Guilherme e Gustavo, aos meus avós Caetano e Maria Enir, à minha companheira Alessandra. v AGRADECIMENTOS A Deus, quem me capacitou em todos os momentos e providenciou cada experiência e encontro relevantes para a realização deste trabalho. A toda minha família, pela união, educação, oração, paciência, confiança e todos os dons do mais puro e desmedido amor que alguém pode dar e receber. À minha companheira Alessandra, pelo amor baseado na intercessão, na partilha, na espera, na doação e no perdão. Ao meu amigo Moacyr, por acreditar sinceramente no meu potencial. Ao professor Pierre Lamary, pela orientação e por cada encontro realizado no laboratório de vibrações. Ao professor Alexandre Bertini, por me incentivar a estudar acústica, sendo o primeiro a mencionar o termo "desempenho acústico dos edifícios" durante minha graduação. Ao professor Marcondes Araújo, por ser meu primeiro tutor em acústica, ensinando-me conceitos da ciência através da ótica arquitetônica. À professora Verônica, pelo incentivo, pela paciência, pelo seu exemplo de pessoa e por todos os conselhos dados. Ao professor Roberto Bezerra, pela disponibilidade e ajuda na realização de ensaios no laboratório de vibrações. Ao Thiago Souza, por compartilhar os conhecimentos e as experiências em acústica. Aos jovens do grupo de oração Pentecostes, por cada momento de amor, oração e serviço.
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