Subjective and objective rating of the sound insulation of residential building façades against road traffic noise

As the weak area of the residence envelope’s, window’s sound insulation is very important in the way of indoor quiet assurance. Base on the road traffic noise as sound sources, the sound insulation comparative studies is made between the insulating laminated glass and double insulated glass. The article choose two similar rooms near the Gaoerji road in Dalian assembled with the different windows, one room’s window was assembled with the insulating laminated glasses, and the other was assembled with double insulated glasses. Research shows that sound insulation effect of the wall with insulating laminated glass is better than the wall with double insulated glass 4dB.

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The Significance of Balcony Acoustic Treatments in Mitigating Urban Road Traffic Noise

ASME 2012 Noise Control and Acoustics Division Conference ◽

10.1115/ncad2012-0180 ◽

2012 ◽

Cited By ~ 1

Author(s):

Andy C. C. Tan ◽

Daniel A. Naish ◽

F. Nur Demirbilek

Keyword(s):

Road Traffic ◽

Traffic Noise ◽

Internal Noise ◽

Road Traffic Noise ◽

Noise Levels ◽

Acoustic Design ◽

Urban Road ◽

Technological Advances ◽

Modern Cities ◽

Building Facades

Urban road traffic noise in cities is an ongoing and increasing problem across much of the world. Consequently a large amount of effort is expended in attempts to address this problem, especially in the area of acoustic design of buildings. Acoustic design policies developed by government authorities will typically focus on required transport noise reductions through a building façade to meet a specified internal noise levels. The significance of balcony acoustic treatments has been highlighted in recent decades yet this area has potentially been considered less important than the need for acoustic isolation of building facades. This paper outlines recent research that has been conducted in determining the significance of balcony acoustic treatments in mitigating urban road traffic noise. It summarizes recent literature, some of which focuses on technological advances in the knowledge of balcony acoustic design and some literature discusses the overall aims and benefits of balcony acoustic design. The aim of this paper is to promote the use of balcony acoustic design as a significant element in the overall solution towards mitigating road traffic noise in modern cities.

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3D noise mapping for preselected locations of urban area with and without noise barriers: A case study of Delhi, India

Noise Mapping ◽

10.1515/noise-2020-0006 ◽

2020 ◽

Vol 7 (1) ◽

pp. 74-83

Author(s):

Pervez Alam ◽

Kafeel Ahmad ◽

S. S. Afsar ◽

Nasim Akhtar

Keyword(s):

Noise Level ◽

Urban Areas ◽

Road Traffic ◽

Traffic Noise ◽

Residential Building ◽

Noise Pollution ◽

Critical Issue ◽

Road Traffic Noise ◽

Noise Barriers ◽

Noise Mapping

AbstractNoise pollution has been rising as a critical issue in recent days particularly for the people living in urban areas. This study has been conducted to find out the effects of traffic induced noise on nearby residential building through 3D noise mapping with and without noise Barriers. Monitoring has been carried out at various densely populated preselected locations of Delhi, India. Thereafter, 3D noise mapping has been done using hourly average noise levels for the locations exposed with maximum noise. The developed 3D noise map shows the variation of noise level along X, Y and Z direction for all selected locations before and after installation of noise barriers. Moreover, the result also shows that exact assessment of noise impact is possible through 3D noise mapping, when a multistory building close to the source of noise is taken into consideration. This paper also elaborates the adequate height, distance and NRC value of noise barrier to reduce the effect of road traffic noise on nearby high rise building. Reduction pattern of noise level can easily be visualized and evaluated by using these maps. This type of study could support decision makers during adaptation of suitable remedial measures.

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Measurements and prediction of road traffic noise along high-rise building façades in Athens

Noise Mapping ◽

10.1515/noise-2020-0001 ◽

2020 ◽

Vol 7 (1) ◽

pp. 1-13 ◽

Cited By ~ 1

Author(s):

Alexandra Sotiropoulou ◽

Ioannis Karagiannis ◽

Emmanouil Vougioukas ◽

Athanassios Ballis ◽

Aspasia Bouki

Keyword(s):

Vertical Distribution ◽

Road Traffic ◽

Traffic Noise ◽

Well Being ◽

Urban Morphology ◽

Design Stage ◽

Road Traffic Noise ◽

High Rise ◽

High Rise Building ◽

Building Facades

AbstractConstant exposure to traffic noise pollution can have significant impact on human health and well being. Occupants of high-rise buildings along noisy traffic arteries are severely affected. In an attempt to contribute to noise protection design of prospective high-rise buildings, traffic noise measurements and prediction using the CRTN (calculation of road traffic noise) model, were made along the façade of a high-rise building in central Athens. The aim was to test the accuracy of this model in predicting the vertical distribution (mapping) of traffic noise along such building façades, under the local urban characteristics of the Mediterranean capital. The predicted and measured noise levels were found to be highly coherent with each other, and their vertical distribution pattern, by and large, confirmed findings from earlier studies. Nevertheless, the predicted values had a tendency of underestimation, with a mean difference −2.2 dB(A) with reference to measured values. It is considered that this underestimation is associated mainly with a newly proposed feature of urban morphology, namely (local) geo-morphology. By and large, it can be inferred that the CRTN model is a useful tool, suitable for the prediction of traffic noise along high-rise building façades during their planning and design stage. The results represent a further step towards more general application of this model, as well as a contribution to the use of this model considering a wider number of urban features.

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Untersuchung der Regelwerke für den passiven Schallschutz unter Berücksichtigung aktueller Verkehrslärmspektren – Teil 2

Lärmbekämpfung ◽

10.37544/1863-4672-2020-01-24 ◽

2020 ◽

Vol 15 (01) ◽

pp. 22-25

Author(s):

W. Wieland ◽

J. Weinzierl

Keyword(s):

Inner City ◽

Road Traffic ◽

Correction Term ◽

Traffic Noise ◽

Sound Insulation ◽

Road Traffic Noise ◽

Previous Approach ◽

Flat Rate ◽

General Reduction ◽

Rail Traffic

Die DIN 4109-2:2018 [2] sieht aufgrund der Frequenzzusammensetzung von Schienenverkehrsgeräuschen in Verbindung mit dem Frequenzspektrum der Schalldämm-Maße von Außenbauteilen eine pauschale Minderung des Beurteilungspegels von 5 dB vor. Inwieweit dieser Pauschalansatz, nachfolgend als Schienenkorrekturterm bezeichnet, ohne Differenzierung nach Zuggattungen und Fahrgeschwindigkeit Bestand haben wird, ist aktuell auch Thema im Schiedsverfahren zur DIN 4109 [2]. Die vorliegende Untersuchung, welche für eine Lochfassade mit geringem Fensterflächenanteil durchgeführt wurde, nimmt eine vergleichende Betrachtung der für innerstädtischen Schienenverkehrslärm und Straßenverkehrslärm ermittelten Korrektursummanden vor. Die Differenzen aus den Korrektursummanden für Schienenverkehr und Straßenverkehr werden mit dem bisherigen Ansatz zum Schienenkorrekturterm von 5 dB verglichen.     Summary DIN 4109-2: 2018 [2] provides for a general reduction in the assessment level of 5 dB due to the frequency composition of rail traffic noise in connection with the frequency spectrum of the sound insulation dimensions of external components. The extent to which this flat-rate approach, hereinafter referred to as the rail correction term, will persist without differentiation according to the type of train and the speed of travel is currently also an issue in the arbitration proceedings to DIN 4109 [2]. The present investigation, which was carried out for a perforated facade with a small proportion of windows, takes a comparative look at the correction summaries determined for inner-city rail traffic noise and road traffic noise. The differences from the correction summands for rail traffic and road traffic are compared with the previous approach to the rail correction term of 5 dB.

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