In this article (and video above), we calculate the flow rate of water at room temperature through 2,000 ft. of 8-in (8.18-in ID) 20 year old cast iron pipe. This question forms part of the Structural Mechanics section of the PE Exam and was created and solved by Engineer in training, Enrique Ivers, LEED Green Associate.
Question:
Water at room temperature flows through 2,000 ft. of 8-in (8.18-in ID) 20 year old cast iron pipe.. The pressure in the pipe drops from 90 psi at the source to 85 psi at the end What is the flow rate in the pipe, in gallons per minute?
Explanation:
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