Difference between Using 2 and 4 Meter Receiver Height in Railway Noise Prediction

Ögren, Mikael; Jerson, Tomas; Öhrström, Evy; Gunnarsson, Andreas

doi:10.1007/978-4-431-53927-8_64

Cited by 2 publications

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“…In accordance with EU DIRECTIVE 2002/49/EC [16], strategic noise mapping has to be modelled and assessed at a height of 4 m that corresponds to the height of the first floor of a residential building. The height of the noise prediction is treated in different studies [17][18][19], where it was concluded that the measured noise levels of road traffic or railway noise increase with height. Considering that the noise sources from the present study are situated at a 6 m height, a noise assessment is made according to a VBEB method which is made according to German national legislation.…”

Section: Noise Impact Methodologymentioning

confidence: 99%

Noise Impact Mitigation of Shopping Centres Located near Densely Populated Areas for a Better Quality of Life

2020

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The growth of the urban population and its activity in major cities has led to various public health challenges, including environmental pollution, which are reflected in a decrease in the well-being of societies. This paper presents a predictive tool used to mitigate the noise impact study of commercial centre noise on the surrounding houses, the study being conducted prior to its construction. Before the construction of the supermarket, the sound pressure levels from the façade of the surrounding building are measured to have a background noise level of the analysed area. The noise impact study is made using prediction software in which the houses and the shopping centre buildings are numerically modelled. The main noise sources of the commercial centre, defined in numerical predictions, are represented by the air conditioners, heat pumps situated on the roof and the noise generated by the activities from the supply ramp. The noise impact evaluation is performed at different heights and by determining the number of affected inhabitants. To reduce the number of exposed inhabitants to noise, four technical solutions are presented. The proposed noise solutions are based on technical and economic analyses and also on the urban landscape. The study presents the noise prediction for which the propagation calculus was made according to ISO 9613-2. The noise limits were evaluated according to the Romanian national legislation. The final part of this study presents the noise measurements performed after the construction of this shopping centre and the validation of the implemented noise reduction solution.

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Section: Noise Impact Methodologymentioning

confidence: 99%