35. An overflow masonry dam is to be constructed across a stream. The 35. An overflow masonry dam is to be constructed across a stream. me stream is estimated to have a maximum flood discharge of 850m² /s when the elevation of the water sSurface is 345m at the dam site. Six siuice gates each 2.5m high and 2m wide are to be constructed in the dam with their sills at elevation 342m. The main overflow weir for which C = 1.45 will be 60m long with a crest elevation at 360m. An auxillary weir 180m long with a crest elevation at 361m will operate during floods. For this weir C = 1.88. With all the sluice gates open, what will be the surface elevation upstream of the dam when the discharge is 850 m3/s? %3D %3D
35. An overflow masonry dam is to be constructed across a stream. The 35. An overflow masonry dam is to be constructed across a stream. me stream is estimated to have a maximum flood discharge of 850m² /s when the elevation of the water sSurface is 345m at the dam site. Six siuice gates each 2.5m high and 2m wide are to be constructed in the dam with their sills at elevation 342m. The main overflow weir for which C = 1.45 will be 60m long with a crest elevation at 360m. An auxillary weir 180m long with a crest elevation at 361m will operate during floods. For this weir C = 1.88. With all the sluice gates open, what will be the surface elevation upstream of the dam when the discharge is 850 m3/s? %3D %3D
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Need help asap. How to come up on the highlighted part? Please explain the whole process of solution.
![35. An overflow masonry dam is to be constructed across a stream. The
stream is estimated to have a maximum flood discharge of 850m²/s
when the elevation of the water surface is 345m at the dam site. Six
siuice gates each 2.5m high and 2m wide are to be constructed in the
dam with their sills at elevation 342m. The main overflow weir for which
C = 1.45 will be 60m long with a crest elevation at 360m. An auxillary
weir 180m long with a crest elevation at 361m will operate during floods.
For this weir C = 1.88. With all the sluice gates open, what will be the
surface elevation upstream of the dam when the discharge is 850 m³ /s?
c 1.88
w.S.
GIVEN:
c 1.45
h+1
Qr = 850
Q,
Q2
c 0.6
Q,
h, 4 2.5m
42 = 60m
L3 = 180m
C= 1.88
E45
SOLUTION:
3
Q1 = CA/2gh = 0.6(2)(2.5),/19.62(h+ 17.75)(6) = 79.73004453(0.88)ž
%3D
3
3
Q2 = CL2H27 = 1.45(60)(h + 1)7 = 87(h + 1)7
%3D
3
Q3 = CL3H37 = 1.88(180)(h)ĩ = 338.4h.
%3D
%3D
1
3
Qr = Q1 + Q2 + Q3 = 850 = 79.73(h + 17.75)z + 87(h + 1)ž + 338.4h7
%3D
Let h = 0.89
3
3
850= 79.73(0.89 + 17.75)ē + 87(0.89 + 1)ž + 338.4(0.89)7
850< 854.4097694
361 m.
360m.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F90a775b4-ca1e-495d-9143-56cc1899f56a%2F6c71e8ea-81e0-448b-8cf1-e545105fbfef%2F9dph0jd_processed.jpeg&w=3840&q=75)
Transcribed Image Text:35. An overflow masonry dam is to be constructed across a stream. The
stream is estimated to have a maximum flood discharge of 850m²/s
when the elevation of the water surface is 345m at the dam site. Six
siuice gates each 2.5m high and 2m wide are to be constructed in the
dam with their sills at elevation 342m. The main overflow weir for which
C = 1.45 will be 60m long with a crest elevation at 360m. An auxillary
weir 180m long with a crest elevation at 361m will operate during floods.
For this weir C = 1.88. With all the sluice gates open, what will be the
surface elevation upstream of the dam when the discharge is 850 m³ /s?
c 1.88
w.S.
GIVEN:
c 1.45
h+1
Qr = 850
Q,
Q2
c 0.6
Q,
h, 4 2.5m
42 = 60m
L3 = 180m
C= 1.88
E45
SOLUTION:
3
Q1 = CA/2gh = 0.6(2)(2.5),/19.62(h+ 17.75)(6) = 79.73004453(0.88)ž
%3D
3
3
Q2 = CL2H27 = 1.45(60)(h + 1)7 = 87(h + 1)7
%3D
3
Q3 = CL3H37 = 1.88(180)(h)ĩ = 338.4h.
%3D
%3D
1
3
Qr = Q1 + Q2 + Q3 = 850 = 79.73(h + 17.75)z + 87(h + 1)ž + 338.4h7
%3D
Let h = 0.89
3
3
850= 79.73(0.89 + 17.75)ē + 87(0.89 + 1)ž + 338.4(0.89)7
850< 854.4097694
361 m.
360m.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
![Structural Analysis](https://compass-isbn-assets.s3.amazonaws.com/isbn_cover_images/9781337630931/9781337630931_smallCoverImage.jpg)
![Structural Analysis (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134610672/9780134610672_smallCoverImage.gif)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
![Principles of Foundation Engineering (MindTap Cou…](https://www.bartleby.com/isbn_cover_images/9781337705028/9781337705028_smallCoverImage.gif)
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
![Structural Analysis](https://compass-isbn-assets.s3.amazonaws.com/isbn_cover_images/9781337630931/9781337630931_smallCoverImage.jpg)
![Structural Analysis (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134610672/9780134610672_smallCoverImage.gif)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
![Principles of Foundation Engineering (MindTap Cou…](https://www.bartleby.com/isbn_cover_images/9781337705028/9781337705028_smallCoverImage.gif)
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
![Fundamentals of Structural Analysis](https://www.bartleby.com/isbn_cover_images/9780073398006/9780073398006_smallCoverImage.gif)
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
![Sustainable Energy](https://www.bartleby.com/isbn_cover_images/9781337551663/9781337551663_smallCoverImage.gif)
![Traffic and Highway Engineering](https://www.bartleby.com/isbn_cover_images/9781305156241/9781305156241_smallCoverImage.jpg)
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning