Three reservoirs are connected by pipes as shown below. Water surface elevations for Reservoirs C and D are 65 ft and 60 ft, respectively. A gate valve is installed in the pipe between junction B and Reservoir D. If the flow rate from Reservoir C to junction B is 7 cfs and the gate valve is fully open, compute the following: (a) the flow rate for the pipe between junction B and Reservoir D, (b) the flow rate for the pipe between Reservoir A and junction B, and (c) the water surface elevation for Reservoir A. The minor head loss coefficient is 0.19 for the fully open gate valve. The minor head loss coefficients are 0.5 for pipe entrances at the reservoirs and 1.0 for pipe exits at the reservoirs. EL. 65' C El. ? A 3000' - 24" C = 120 Q =7 cfs 3000' - 18" C = 120 B 6000' - 24" EL. 60' C= 130 D gate valve

Structural Analysis
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Three reservoirs are connected by pipes as shown below. Water surface elevations for
Reservoirs C and D are 65 ft and 60 ft, respectively. A gate valve is installed in the
pipe between junction B and Reservoir D. If the flow rate from Reservoir C to
junction B is 7 cfs and the gate valve is fully open, compute the following: (a) the
flow rate for the pipe between junction B and Reservoir D, (b) the flow rate for the
pipe between Reservoir A and junction B, and (c) the water surface elevation for
Reservoir A. The minor head loss coefficient is 0.19 for the fully open gate valve.
The minor head loss coefficients are 0.5 for pipe entrances at the reservoirs and 1.0
for pipe exits at the reservoirs.
EL. 65'
El. ?
A
3000' - 24"
O = ?
C = 120
Q = 7 cfs
3000' - 18"
C= 120
B
?
EL. 60'
6000' - 24"
C= 130
gate
valve
Transcribed Image Text:Three reservoirs are connected by pipes as shown below. Water surface elevations for Reservoirs C and D are 65 ft and 60 ft, respectively. A gate valve is installed in the pipe between junction B and Reservoir D. If the flow rate from Reservoir C to junction B is 7 cfs and the gate valve is fully open, compute the following: (a) the flow rate for the pipe between junction B and Reservoir D, (b) the flow rate for the pipe between Reservoir A and junction B, and (c) the water surface elevation for Reservoir A. The minor head loss coefficient is 0.19 for the fully open gate valve. The minor head loss coefficients are 0.5 for pipe entrances at the reservoirs and 1.0 for pipe exits at the reservoirs. EL. 65' El. ? A 3000' - 24" O = ? C = 120 Q = 7 cfs 3000' - 18" C= 120 B ? EL. 60' 6000' - 24" C= 130 gate valve
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