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H A C LOT 1 C=0.6 LOT 3 200 C=03 m K LOT 2 200m C =07 200 LOT 4 m C=03 100m H 0 C G 100m- ><100m-> <100m-> In the area shown in the...


Can you give the answers to the question attached? Thanks in advance.Untitled.png

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Q8.
H
A
C
LOT 1
C=0.6
LOT 3
200
C=03
m
K
LOT 2
200m
C =07
200
LOT 4
m
C=03
100m
H
0
C
G
100m-
><100m-> <100m->
In the area shown in the above figure:
Lot 1 (ABKJ) drains to Pit J with a total flow time of 10 mimites.
Lot 2 (HIJK) drains to Pit I with a total flow time of 12 minutes.
Lot 3 (part) (BCDGHK) drains to Pit H with a total flow time of 30 minutes
Lot 4 (remainder) (DEFG) drains to Pit G with a total flow time of 25 minutes.
Pipe travel times are:
GH = HI = 1min
JI = 2 mins
The rainfall intensity for the design ARI is
Duration (min)
10
12
14
16
18
20
2.2
Intensity (mm/h)
100
88.2
79
71.4
65.2
60
55.6
Duration (on)
24
26
28
30
32
34
Intensity (mm h)
51.7
48.4
45.5
42.9
40.5
38.5
Calculate the required capacity of the pits G, H, I and J.
Calculate the required capacity of the pipe GH, HI, JI and the pipe discharging
from the site.

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