Plate 4 line graph showing variation in noise level in FUTA
With the observed trend of high noise values from the line graph, the
morning recorded the least noise levels. The mapped values range between
41.7 dB(A) to 76.5 dB(A) for morning, 41.3 dB(A) to 79.3 dB(A) for
afternoon and 43.6 dB(A) to 79.5 dB(A) depicting lower and higher limits
for the period. South gate and north gate were recorded as places with
highest value which was due to the bus stop at the two gates hereby
causing noise pollution for the land use. Malu road and Botanical garden
has the lowest noise level due to the closeness to thick vegetation
(forest). The school of engineering and engineering (SEET) building was
assessed for morning afternoon, and evening period, the average noise
levels are 63.4 dB(A) ,66.2 dB(A) ,65.6 dB(A) respectively. ETF, 1000
LT, 2 in 1, SET and SOS building. It is found that the noise levels in
the lecture theater are above the threshold limits of 55 dB(A) man can
be exposed to due to the operations carried out in the area. This noise
is due to the high population of students in the area. From the line
graph above, it shows that the highest noise value is in the evening and
the places with highest occurrences noise pollution is in the morning.
Plate 5 to plate 7 shows the spatial distribution of noise levels in the
selected areas within Ijoka for morning, afternoon and evening
respectively. The colors denote the increase in noise levels (decibel)
which are represented from green to yellow on the thematic map. Plate 8
shows the line graph which denotes the noise peak and statistical
analysis of the noise data.
3.2 Detailed Noise Levels in Ijoka(Residential)