A pipe has a total length of 9800 ft with diameter of 30 in., and its thickness is 5/8 in. Assume that Er = 30 x 10° psi, and Eg = 300,000 psi. If the initial velocity for steady flow is 8 ft/s and a valve near the end of the pipe is partially closed so as to reduce the flow to half of the initial velocity in 3 seconds, (a) What is the wave celerity (ft/s), and (b) find the maximum pressure rise (psi) from the water hammer.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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PROBLEM 4
A pipe has a total length of 9800 ft with diameter of 30 in., and its thickness is 5/8 in. Assume that Er = 30 x 10° psi,
and Eg = 300,000 psi. If the initial velocity for steady flow is 8 ft/s and a valve near the end of the pipe is partially
closed so as to reduce the flow to half of the initial velocity in 3 seconds,
(a) What is the wave celerity (ft/s), and
(b) find the maximum pressure rise (psi) from the water hammer.
Transcribed Image Text:PROBLEM 4 A pipe has a total length of 9800 ft with diameter of 30 in., and its thickness is 5/8 in. Assume that Er = 30 x 10° psi, and Eg = 300,000 psi. If the initial velocity for steady flow is 8 ft/s and a valve near the end of the pipe is partially closed so as to reduce the flow to half of the initial velocity in 3 seconds, (a) What is the wave celerity (ft/s), and (b) find the maximum pressure rise (psi) from the water hammer.
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