The elasticity and dimension of a pipe are such that the celerity of pressure wave is 975 m/s. The pipe diameter is 1.2m and a valve is located 600 m downstream. Water is flowing initially at 0.85 m³/s. 1. Find the water hammer pressure for instantaneous valve closure. a. 721.35 kPa b. 753.12 kPa c. 731.25 kPa d. 712.53 kPa 2. What is the approximate water hammer pressure if the valve is closed in 4 seconds? a. 522 kPa b. 235 kPa c. 225 kPa d. 125 kPa 3. What is the water-hammer pressure if the valve is manipulated so that the flow rate drops almost instantly from 0.85 to 0.28m³/s? a. 487.5 kPa b. 458.7 kPa c. 496.2 kPa d. 425.8 kPa
The elasticity and dimension of a pipe are such that the celerity of pressure wave is 975 m/s. The pipe diameter is 1.2m and a valve is located 600 m downstream. Water is flowing initially at 0.85 m³/s. 1. Find the water hammer pressure for instantaneous valve closure. a. 721.35 kPa b. 753.12 kPa c. 731.25 kPa d. 712.53 kPa 2. What is the approximate water hammer pressure if the valve is closed in 4 seconds? a. 522 kPa b. 235 kPa c. 225 kPa d. 125 kPa 3. What is the water-hammer pressure if the valve is manipulated so that the flow rate drops almost instantly from 0.85 to 0.28m³/s? a. 487.5 kPa b. 458.7 kPa c. 496.2 kPa d. 425.8 kPa
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The elasticity and dimension of a pipe are such that the celerity of pressure wave is 975 m/s. The pipe diameter is 1.2m and a valve is located 600 m downstream. Water is flowing initially at 0.85 m³/s.
1. Find the water hammer pressure for instantaneous valve closure.
a. 721.35 kPa
b. 753.12 kPa
c. 731.25 kPa
d. 712.53 kPa
2. What is the approximate water hammer pressure if the valve is closed in 4 seconds?
a. 522 kPa
b. 235 kPa
c. 225 kPa
d. 125 kPa
3. What is the water-hammer pressure if the valve is manipulated so that the flow rate drops almost instantly from 0.85 to 0.28m³/s?
a. 487.5 kPa
b. 458.7 kPa
c. 496.2 kPa
d. 425.8 kPa
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