Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of façade shape and acoustic cladding on reduction of leisure noise levels in a street canyon
https://orcid.org/0000-0002-2601-7957
https://orcid.org/0000-0002-0794-9695
Abstract Environmental noise is a rising problem in contemporary cities, and the awareness of its consequences on human health is growing. Although the leisure noise generated by people talking in the streets is not generally the most relevant noise source, it has a significant impact in certain urban scenarios, such as nightlife areas. Buildings façades are the primary surfaces upon which the sound emitted within the street is reflected and their design contributes to the reduction of noise level over their fronts. By means of acoustic performance-based design, this research investigates the sound level reduction provided by the shape and the acoustic cladding of an urban façade in front of a talking noise source in a street canyon. The results highlight the screening effect provided by the balconies and the benefits of the application of sound absorbing material on the noise reduction over the façade. Up to 1 dB decrease in the mean level over the entire façade has been achieved with balconies depth of 1.5 m compared to 0.9 m, with a maximum abatement of 2.8 dB at the highest floor. When the entire façade is cladded with sound absorbing material, the mean noise level decrease is up to 10 dB over the façade and up to 3 dB over the opposite one. These reductions are much higher than those obtained by increasing the sound absorption properties of the street paving, that is limited to 1.5 dB averagely, thus underlining the crucial role of façade design in outdoor noise mitigation.
Graphical abstract Display Omitted
Highlights Balconies slightly shield the façade from talking noise in the street. Increased balcony depth reduces SPL on the pertaining façade up to 1 dB. Sound absorbing balconies and loggias reduce the SPL over the façade up to 6.5 dB. An entirely sound absorbing façade reduces SPL on the façade itself up to 9.5 dB. A sound absorbing street paving achieves 1 dB in noise reduction over the façade.
Effect of façade shape and acoustic cladding on reduction of leisure noise levels in a street canyon
https://orcid.org/0000-0002-2601-7957
https://orcid.org/0000-0002-0794-9695
Abstract Environmental noise is a rising problem in contemporary cities, and the awareness of its consequences on human health is growing. Although the leisure noise generated by people talking in the streets is not generally the most relevant noise source, it has a significant impact in certain urban scenarios, such as nightlife areas. Buildings façades are the primary surfaces upon which the sound emitted within the street is reflected and their design contributes to the reduction of noise level over their fronts. By means of acoustic performance-based design, this research investigates the sound level reduction provided by the shape and the acoustic cladding of an urban façade in front of a talking noise source in a street canyon. The results highlight the screening effect provided by the balconies and the benefits of the application of sound absorbing material on the noise reduction over the façade. Up to 1 dB decrease in the mean level over the entire façade has been achieved with balconies depth of 1.5 m compared to 0.9 m, with a maximum abatement of 2.8 dB at the highest floor. When the entire façade is cladded with sound absorbing material, the mean noise level decrease is up to 10 dB over the façade and up to 3 dB over the opposite one. These reductions are much higher than those obtained by increasing the sound absorption properties of the street paving, that is limited to 1.5 dB averagely, thus underlining the crucial role of façade design in outdoor noise mitigation.
Graphical abstract Display Omitted
Highlights Balconies slightly shield the façade from talking noise in the street. Increased balcony depth reduces SPL on the pertaining façade up to 1 dB. Sound absorbing balconies and loggias reduce the SPL over the façade up to 6.5 dB. An entirely sound absorbing façade reduces SPL on the façade itself up to 9.5 dB. A sound absorbing street paving achieves 1 dB in noise reduction over the façade.
Effect of façade shape and acoustic cladding on reduction of leisure noise levels in a street canyon
https://orcid.org/0000-0002-2601-7957
https://orcid.org/0000-0002-0794-9695
Abstract Environmental noise is a rising problem in contemporary cities, and the awareness of its consequences on human health is growing. Although the leisure noise generated by people talking in the streets is not generally the most relevant noise source, it has a significant impact in certain urban scenarios, such as nightlife areas. Buildings façades are the primary surfaces upon which the sound emitted within the street is reflected and their design contributes to the reduction of noise level over their fronts. By means of acoustic performance-based design, this research investigates the sound level reduction provided by the shape and the acoustic cladding of an urban façade in front of a talking noise source in a street canyon. The results highlight the screening effect provided by the balconies and the benefits of the application of sound absorbing material on the noise reduction over the façade. Up to 1 dB decrease in the mean level over the entire façade has been achieved with balconies depth of 1.5 m compared to 0.9 m, with a maximum abatement of 2.8 dB at the highest floor. When the entire façade is cladded with sound absorbing material, the mean noise level decrease is up to 10 dB over the façade and up to 3 dB over the opposite one. These reductions are much higher than those obtained by increasing the sound absorption properties of the street paving, that is limited to 1.5 dB averagely, thus underlining the crucial role of façade design in outdoor noise mitigation.
Graphical abstract Display Omitted
Highlights Balconies slightly shield the façade from talking noise in the street. Increased balcony depth reduces SPL on the pertaining façade up to 1 dB. Sound absorbing balconies and loggias reduce the SPL over the façade up to 6.5 dB. An entirely sound absorbing façade reduces SPL on the façade itself up to 9.5 dB. A sound absorbing street paving achieves 1 dB in noise reduction over the façade.
Effect of façade shape and acoustic cladding on reduction of leisure noise levels in a street canyon
Badino, Elena (Autor:in) / Manca, Roberto (Autor:in) / Shtrepi, Louena (Autor:in) / Calleri, Cristina (Autor:in) / Astolfi, Arianna (Autor:in)
Building and Environment ; 157 ; 242-256
19.04.2019
15 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch