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Prediction of the sound field into high-rise building facades due to its balcony ceiling form

Hany Hossam Eldien 1 Philippe Woloszyn 1
1 CERMA - Centre de recherche méthodologique d'architecture
AAU - Ambiances architecturales et urbaines : UMR 1563
Abstract : This study presents the acoustic performance off tall building facades closed to roadway due to one of balcony configurations, namely ceiling, with an inclined form in terms of traffic noise reduction. Three inclined angles are tested (5,10, and 15°) with different balcony depths by using a Pyramid Tracing model developed by A. Farina. The results in terms of A-weighted sound pressure level reduction are expressed in free field into the balcony back wall. The protection level, defined as the difference in noise levels before and after inserting the proposed balcony form, has been used to assess the reduction offered by that configuration. A maximum reduction due to using these forms is obtained at higher floors and at balcony of 2 m depths and more. As a consequence of simulation results, it is found that the prediction of protection levels from 10th to 15th floor can be calculated from an empirical equation.
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Hany Hossam Eldien, Philippe Woloszyn. Prediction of the sound field into high-rise building facades due to its balcony ceiling form. Applied Acoustics, Elsevier, 2004, 65, pp.431. ⟨10.1016/j.apacoust.2003.11.002⟩. ⟨hal-01555290⟩

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