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  1 - Study of noise pollution in the district 5 of Tehran municipally
  sanaz fathi parvin nassiri mohammad reza monazam smaeilpour roya moradi fatemeh razaghei
  Introduction: The purpose of this study is the amount of sound pollution in the region 5 of Tehran.This area because the population density, residential neighborhood with various highway, too manytraffic and transportation are important for attention.Material and method More

  Introduction: The purpose of this study is the amount of sound pollution in the region 5 of Tehran.This area because the population density, residential neighborhood with various highway, too manytraffic and transportation are important for attention.Material and method: This study was done in mordad and tir mounts in 1390 that in 61 stations onthree state in peak hour traffic that sounds parameters were measured then getting into GIS software ofdata geograpic and layers of information to provide amount of pollution in the region, was determinedisruption of sound pollution, critical point and the regions whithout sound pollution. In this studyused 260 questionnaire.Results: The average of Equivalent Noise level (Leq) in the the region 5 of Tehran was 72.3 dB(A)that maximum valu of Leq have been registered in station bridge to the air industry in amount of 80.7dB(A) and the least amount registered in the station kohsar park in amount of 55.9dB(A) alsomaximum amount of the indexes sounds (L90, L10) Traffic Noise Index (TNI) and Level of NoisePollution (LNP) each respective values 90 dB(A), daneshgahe elmi va carbordi station, 80.3 dB(A)Tehran- karaj highway station and 106.2dB(A) station of ferdos- aghil and 92.2 dB(A) in thedaneshgahe elmi va karbordi station respectively.Conclusion: As the results show in all of the stations of measurement of noise, Equivalent NoiseLevel was measured more than the day standard level of Iran. Manuscript profile