Chapter 7 – Assumptions and Uncertainties
Surge Analysis and the Wave Plan Method
Supplementary Material: Example Problems and Solutions
Chapter 7 – Problem 7.10
7.10 Consider an above-ground practically unrestrained in-situ fabricated mild steel pipeline connected to a reservoir at one end and a rapidly closing valve on the other end. The pipe characteristics are length = 100m, internal diameter = 1000 mm, external diameter = 1012 mm, and Hazen-William roughness = 130, When the valve is fully open (during steady state), the depth of water in the reservoir is 5m. The valve minor loss coefficient is 10. Is it safe to close the valve in 0.1s? [Hint: See section 7.4 for pipe strength calculations]
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