Example 4.2 Along rectangular channel is 3m wide & carries water at the rate of 13m'/sec. At a certain point there is an approach change in the slope from 1:60 to 1:600 , determine: a)whether the hyd. Jump will form?
Example 4.2 Along rectangular channel is 3m wide & carries water at the rate of 13m'/sec. At a certain point there is an approach change in the slope from 1:60 to 1:600 , determine: a)whether the hyd. Jump will form?
Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter15: Slope Stability
Section: Chapter Questions
Problem 15.3P
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![Example 4.2
Along rectangular channel is 3m wide & carries water at the rate of 13m/sec. At a
certain point there is an approach change in the slope from 1:60 to 1:600 , determine:
a)whether the hyd. Jump will form?
Solution
Q = * R2/3 * S1/2 A
n
3y1
1
(3y,)(:
13
0.015
3+ 2y1
Y1 = 0.79 m
1
3y1
13 =
(3y2)G
3+2y2
0.015
Y2 = 1.82m
2
(13/3)
3
3
Ye =
= 1.24 m
9.81
Y1 < Yc <Y2 The jump accure
A = 3 * 0.79 = 2.37
Y2
0.5 [ /1+ 8 (fr1)? – 1]
Y1
5.48
fri
= 1.976
!!
9.81 0.79
H.W/Find The location of the jump if formed ,use manning
coe.
= 0.015](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb3a013a4-f5ad-437b-86a8-db393b3599d1%2Fe7e9e608-4046-4e9a-ad4e-fa41068bbd5b%2Fjpyozs9_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Example 4.2
Along rectangular channel is 3m wide & carries water at the rate of 13m/sec. At a
certain point there is an approach change in the slope from 1:60 to 1:600 , determine:
a)whether the hyd. Jump will form?
Solution
Q = * R2/3 * S1/2 A
n
3y1
1
(3y,)(:
13
0.015
3+ 2y1
Y1 = 0.79 m
1
3y1
13 =
(3y2)G
3+2y2
0.015
Y2 = 1.82m
2
(13/3)
3
3
Ye =
= 1.24 m
9.81
Y1 < Yc <Y2 The jump accure
A = 3 * 0.79 = 2.37
Y2
0.5 [ /1+ 8 (fr1)? – 1]
Y1
5.48
fri
= 1.976
!!
9.81 0.79
H.W/Find The location of the jump if formed ,use manning
coe.
= 0.015
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