title: Assessment of noise environment during construction of a major bridge and associated approach road.
abstract: In this paper a methodology to quantify the noise environment, during a major bridge construction and upgrading approach road connectivity, has been provided. Noise levels were monitored at eleven sites. These eleven sites have been classified into three categories - commercial, residential and silence zones. The study was carried out to measure the ambient noise levels in all the eleven sites falling in the above three categories during both day and night times considering both "working" and "non-working" days. It was found that the mean noise level during night time was more, compared to that during day time for commercial, residential as well as silence zones. The likely causes of more noise during night time have been explored. Appropriate remedial measures have been suggested to reduce the noise levels. In addition, the noise levels in the above three zones have been compared, wherever feasible statistically, with the respective zonal standards. Significance has been found in all the cases. The underlying causes and remedies have been provided.
authors.affiliation: Jadavpur University, Department of Mechanical Engineering, Kolkata-700 032, India.
authors.forename: T K
authors.initials: TK
authors.lastname: Roy
authors.forename: A R
authors.initials: AR
authors.lastname: Mukhopadhyay
authors.forename: S K
authors.initials: SK
authors.lastname: Ghosh
authors.forename: G
authors.initials: G
authors.lastname: Majumder
mesh_terms: D004784:Environmental Monitoring / Q000295:instrumentation* / Q000379:methods*; D004867:Equipment Design; D009622:Noise; D013018:Sound Spectrography / Q000295:instrumentation* / Q000379:methods*; D014186:Transportation