s/s on a grade of 0.007 ? (c) A 300 mm diameter sewer is built at a grade of 2 percent. What is the depth of sewage flowing in the pipe when it carries a flow of 50 liters/s? What is the velocity?
s/s on a grade of 0.007 ? (c) A 300 mm diameter sewer is built at a grade of 2 percent. What is the depth of sewage flowing in the pipe when it carries a flow of 50 liters/s? What is the velocity?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Using the Manning nomograph and assuming n=0.013, determine the following:
(a) An 800 mm diameter sanitary sewer is built on a slope of 0.2 percent. What is the fullflow discharge capacity of the sewer and what is the flow velocity?
(b) What diameter pipe is needed to carry a peak flow of 200 liters/s on a grade of 0.007 ?
(c) A 300 mm diameter sewer is built at a grade of 2 percent. What is the depth of sewage flowing in the pipe when it carries a flow of 50 liters/s? What is the velocity?
Transcribed Image Text:0.15 40
0.4
0.5
60
2000
50
40
0.6 -
20
0.2
0.2
1000
0.7
10
0.1
800
20
0.8
0.08
600
6.
0.06
500
0.9 -
400
1
0.3
0.04
10
8.
300
2
0.02
6.
200
- 0.4
4
E0.01
0.008
1.5
300
120
3
0.5
270
240
100
100
0.10
0.08
0:6
0.006
80
210
84
0.06
0.6 0.4
0.004
60
180
72
50
150
60
0.04
0.7
40
135
0.03
0.002
0.2
0.8
1
2.5
48
120
0.8
30
0.02
42
105
90
36
0.013
0.9
0.1
F0.001
0.0008
0.6
20
0.5
0.01,
75
30
0.4
0.006
0.06
0.0006
60
24
0.3
10
52
4
0.04
0.0004
20
8
45
18
0.2
16
6
37.5
0.002
0.02
14
0.0002
30
12
0.1
4
25
10
0.01
0.0001
0.08
3
- 0.00008
0.00006
7
0.06
0.05
0.006
8.
0.004
-0.00004
0.04
9-
0.03 -
10
3 0.002
0.00002
0.02
0.8
0.6
0.001
4
- 0.00001
0.5
13
0.01
0.4
0.0006
0.000006
0.008
0.3
16
0.000004
0.006
D
TL
n
V
8 § 88 Discharge, m^3/s
Discharge, ft^3/s
Pipe diameter, cm
8 Pipe diameter, in
Turning lline
Mannings roughness coefficient, n
6-
Velocity ft/s
Velocity m/s
Slope, %
Slope, ft/ft, m/m
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