Question 2 Storm sewer system is to be provided to drain storm water to protect urban areas from flooding after episodes of rainfall. Storm sewer layout along with the contributing areas drained in specific sewer lines is shown in Figure Q2. Design the storm sewer system for "gravity flow" using the data given in Table Q2 assuming that the entry time to the pipe is the same for all sections and is equal to 6 min. All pipes are circular and made of concrete. All areas are in hectares. Az=3 ha Az=7 ha C=0.5X C2=0.6X A3=5 ha C3=0.7X M1 S1 SS2 M3 M2 Ag=4ha C=0.4X As=8 ha Cs=0.8X M4 X=1 M5 Outfall Figure Q2- Layout of storm sewers Table Q 2- Design Data for Storm Sewers Sewer Name Length of Head of run End of Run Gradient Sewer 'm' S1 60+X M1 M2 1.5% SS2 80+X M2 M3 2% SS3 80+X M3 М4 2% SS4 70+X М4 M5 2.5% SS3

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Question 2
Storm sewer system is to be provided to drain storm water to protect urban areas from flooding
after episodes of rainfall. Storm sewer layout along with the contributing areas drained in
specific sewer lines is shown in Figure Q2. Design the storm sewer system for "gravity flow"
using the data given in Table Q2 assuming that the entry time to the pipe is the same for all
sections and is equal to 6 min. All pipes are circular and made of concrete. All areas are in
hectares.
Az=3 ha
Az=7 ha
C;=0.5X
Cz=0.6X
A3=5 ha
M1
C3=0.7X
S1
SS2
M3
M2
A4=4ha
C=0.4X
As=8 ha
Cs=0.8X
M4
X=1
M5
Outfall
Figure Q2- Layout of storm sewers
Table Q 2- Design Data for Storm Sewers
Sewer Name
Length of
Head of run
End of Run
Gradient
Sewer
'm'
S1
60+X
M1
М2
1.5%
SS2
80+X
M2
M3
2%
SS3
80+X
МЗ
М4
2%
SS4
70+X
M4
M5
2.5%
SS3
Transcribed Image Text:Question 2 Storm sewer system is to be provided to drain storm water to protect urban areas from flooding after episodes of rainfall. Storm sewer layout along with the contributing areas drained in specific sewer lines is shown in Figure Q2. Design the storm sewer system for "gravity flow" using the data given in Table Q2 assuming that the entry time to the pipe is the same for all sections and is equal to 6 min. All pipes are circular and made of concrete. All areas are in hectares. Az=3 ha Az=7 ha C;=0.5X Cz=0.6X A3=5 ha M1 C3=0.7X S1 SS2 M3 M2 A4=4ha C=0.4X As=8 ha Cs=0.8X M4 X=1 M5 Outfall Figure Q2- Layout of storm sewers Table Q 2- Design Data for Storm Sewers Sewer Name Length of Head of run End of Run Gradient Sewer 'm' S1 60+X M1 М2 1.5% SS2 80+X M2 M3 2% SS3 80+X МЗ М4 2% SS4 70+X M4 M5 2.5% SS3
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