a. Using Rational Formula, calculate the 50-year peak discharge for the whole watershed (as one basin). b. Assuming CNs of 87, 81, and 78 for subareas 1, 2, and 3, respectively, estimate the 50-year, 1-hr. peak discharges for each inlet using the SCS Graphical Method c. Graphically estimate the total peak discharge (simplify using triangular curve shape).

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
icon
Related questions
icon
Concept explainers
Question
100%
Handwritten work only
1- Choose a 2-digit fraction larger than 0.50 (i.e. 0.68) as a multiplier for the areas
2- Choose a storm frequency between 2-50 years
Answer All Questions
1- For the watershed shown below and the IDF curve.,
a. Using Rational Formula, calculate the 50-year peak discharge for the
whole watershed (as one basin).
b. Assuming CNs of 87, 81, and 78 for subareas 1, 2, and 3, respectively,
estimate the 50-year, 1-hr. peak discharges for each inlet using the SCS
Graphical Method
c. Graphically estimate the total peak discharge (simplify using triangular
curve shape).
d. Repeat the calculation of b and c using Snyder UH method. Assume flow
length of 600 feet, 400 feet, and 550 feet for subareas 1m 2, and 3,
respectively. Assume that the Center Flow Length, Lc, for the subareas is
equal to one half of the flow length.
A₁ = 2.8 ac
C₁ = 0.6
tc1
= 5 min
Inlet
Pipe
L = 480 ft
V = 2 ft/sec
A₂ = 3.2 ac
C₂ = 0.5
tc2
= 6 min
Inlet
A3 = 4.1 ac
C3 = 0.45
Tc3
Inlet
= 7 min
Transcribed Image Text:1- Choose a 2-digit fraction larger than 0.50 (i.e. 0.68) as a multiplier for the areas 2- Choose a storm frequency between 2-50 years Answer All Questions 1- For the watershed shown below and the IDF curve., a. Using Rational Formula, calculate the 50-year peak discharge for the whole watershed (as one basin). b. Assuming CNs of 87, 81, and 78 for subareas 1, 2, and 3, respectively, estimate the 50-year, 1-hr. peak discharges for each inlet using the SCS Graphical Method c. Graphically estimate the total peak discharge (simplify using triangular curve shape). d. Repeat the calculation of b and c using Snyder UH method. Assume flow length of 600 feet, 400 feet, and 550 feet for subareas 1m 2, and 3, respectively. Assume that the Center Flow Length, Lc, for the subareas is equal to one half of the flow length. A₁ = 2.8 ac C₁ = 0.6 tc1 = 5 min Inlet Pipe L = 480 ft V = 2 ft/sec A₂ = 3.2 ac C₂ = 0.5 tc2 = 6 min Inlet A3 = 4.1 ac C3 = 0.45 Tc3 Inlet = 7 min
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps with 4 images

Blurred answer
Knowledge Booster
Sediment transport
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.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Structural Analysis
Structural Analysis
Civil Engineering
ISBN:
9781337630931
Author:
KASSIMALI, Aslam.
Publisher:
Cengage,
Structural Analysis (10th Edition)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Sustainable Energy
Sustainable Energy
Civil Engineering
ISBN:
9781337551663
Author:
DUNLAP, Richard A.
Publisher:
Cengage,
Traffic and Highway Engineering
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning