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Volume :6 Issue : 1 1979      Add To Cart                                                                    Download

Community noise in Kuwait-Social and environmental aspects

Auther : MOSTAFA EL-DESOUKY AND IBRAHIM M. HAD1

Occupational Health and Industrial Pollution Contro1 Section, Department of Public Health and Planning, Ministry of Public Health, Kuwait

 

ABSTRACT

 

Noise level in dBA was recorded for 24 hr in 29 localities in the State of Kuwait. Nine points were used to record noise generated by traffic and aircraft movements. Community noise was recorded at 20 points in various districts representing three types of housing patterns: villa-type districts (l0), apartment-building districts (6) and mixed (i.e. villa-type and apartment-building) districts (4). The prevailing noise was higher in the apartment-building districts than in the other two. The background level (L90) was 44.2, 48.7, and 42.1 dBA in these areas respectively. This was persistent in the four periods into which the day was divided. The morning period (06.00-14.00 hr) was the most noisy. The night period (24.00-06.00 hr) was appreciably more quiet. The level of noise was significantly correlated with the density of the population living therein. The mean hourly number of peaks was highest in the apartment-building districts compared to the other two. This was common to both the peaks estimated from the base line or within 10 dB from the highest noise event recorded within the hour. Noise was the principal cause of annoyance (56.7%), and this was common to all types of residential areas. It was more marked in the areas near the airport. The sources of the prevailing noise complained of were mainly traffic (83.5%) aircraft (42%), neighbours (17.3%). and air conditioning (14.1%). The types of disturbance recorded were mostly related to sleep (47.5%), interference with relaxation (48.1%), and disturbance of TV watching (32.5%). Interference with speech was less frequently reported. The degree of annoyance was: 16.7% were moderately annoyed, 14.7% severely annoyed, and 6.9% very severely annoyed. Those reporting to be severely and very severely annoyed were more frequent in the areas around the airport. Reaction towards noise was related to nationality, economic status, and distance of the house from the street. The correlation between the prevalence of the complaints and their severity and the various parameters of noise showed that the L values (except L90 and L95) were significantly correlated with the prevalence of complaints. The severity, as averaged over the total population or over those giving positive response, gave a significant correlation only with LI. The community noise equivalent level (CNEL) was significantly correlated with both the prevalence of the complaints and their severity. The formula that gave the highest correlation was the one giving a weighting to the afternoon period (14.0CL17.00 hr) almost equal to that given to the night. It seems that people are as sensitive to noise in the afternoon period as they are at night. This is probably due to the fact that most people take an afternoon nap. The peaks of noise did not give a significant correlation with either the prevalence of the complaints or their severity.

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Jun 19, 2012

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