Question 4There is a proposal to construct a factory 80m West from a long residential road which runs fromNorth to South and has houses spaced at 15m apart along both sides of the road. The expected noiselevel which will be created by the factory is 125 dB at a frequency of 250HZ. The ground locally willprovide no substantial attenuation of the noise and no other barriers are proposed at this stage inthe planning. The existing local background noise level is 55 dBA.i)If the maximum SWL at any house must not exceed 60DBA, determine how many houseswill require sound insulation work. State clearly any assumptions you make in yourcalculation.A barrier is to be erected 20m from the factory and parallel to the road. Calculate thesound attenuation of this barrier if no house will be subject to an SPL of greater thanii)60DBA.The possibility of constructing a second identical factory unit due South of the plannedone is also being considered. The above barrier can be assumed to be continued throughboth sites. Calculate how far this site should be from the first factory to ensure that theiii)noise level on the road equidistant from the two factories does not exceed 62dBA.

solution (A) sound pressure level (SPL) - 1. A sound strain is the tension deviation from…

ses spaced at 15m apart along both sides of the road. The expected noise by the factory is 125 dB at a frequency of 250OHZ. The ground locally will uation of the noise and no other barriers are proposed at this stage in cal background noise level is 55 dBA. SWL at any house must not exceed 60DBA, determine how many houses

ses spaced at 15m apart along both sides of the road. The expected noise by the factory is 125 dB at a frequency of 250OHZ. The ground locally will uation of the noise and no other barriers are proposed at this stage in cal background noise level is 55 dBA. SWL at any house must not exceed 60DBA, determine how many houses

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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