Question 5. For an uncontrolled spillway, level-storage and level-flow relationships can be calculated with the following formulas: S=523800H ¹.5 and Q=48.50H¹.5. Here, H is the height/level above the spillway (m), S is the storage amount (m3) and Q is the outlet flow (m3/s). To obtain the outlet hydrograph ordinates at the reservoir outlet (assume the reservoir is full), the translation procedure will be applied by following the steps given below a) The peak rate of the outflow hydrograph and the time to reach the peak b) Peak reduction and peak delay values of the output hydrograph c) Find the maximum storage in the reservoir and the time it occurred, and d) Find the flood storage volume gained in the reservoir during the uplift phase. water year 0 2 4 6 8 10 12 16 (1₁+12) + (251-Q₁) = 25² + Q₂) At Incoming current (m³/s) 10 90 180 320 240 162 88 44 10 S=Q.At

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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Question 5. For an uncontrolled spillway, level-storage and level-flow
relationships can be calculated with the following formulas:
S=523800H ¹.5 and Q=48.50H¹.5
Here, H is the height/level above the spillway (m), S is the storage
amount (m3) and Q is the outlet flow (m3/s). To obtain the outlet
hydrograph ordinates at the reservoir outlet (assume the reservoir is
full), the translation procedure will be applied by following the steps
given below
a) The peak rate of the outflow hydrograph and the time to reach the
peak
b) Peak reduction and peak delay values of the output hydrograph
c) Find the maximum storage in the reservoir and the time it
occurred, and
d) Find the flood storage volume gained in the reservoir during the
uplift phase.
water
year
0
2
4
6
8
10
12
14
16
incoming current
(m³/s)
10
90
180
320
240
162
88
44
10
(1₁ + 12) + (25₁-Q₁) = (252 + + Q₂)
At
S=Q.At
Transcribed Image Text:Question 5. For an uncontrolled spillway, level-storage and level-flow relationships can be calculated with the following formulas: S=523800H ¹.5 and Q=48.50H¹.5 Here, H is the height/level above the spillway (m), S is the storage amount (m3) and Q is the outlet flow (m3/s). To obtain the outlet hydrograph ordinates at the reservoir outlet (assume the reservoir is full), the translation procedure will be applied by following the steps given below a) The peak rate of the outflow hydrograph and the time to reach the peak b) Peak reduction and peak delay values of the output hydrograph c) Find the maximum storage in the reservoir and the time it occurred, and d) Find the flood storage volume gained in the reservoir during the uplift phase. water year 0 2 4 6 8 10 12 14 16 incoming current (m³/s) 10 90 180 320 240 162 88 44 10 (1₁ + 12) + (25₁-Q₁) = (252 + + Q₂) At S=Q.At
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