A residence in Djorwolo used a roof tank to supply water at a nearly constant head. The water was collected in an under floor sump, then pumped back to the roof tank after rainfall. The flowrate was 10 litres/s . The tank was 6m above the sump, and the length of the pipe was 15 m. The old 6” pipes are now heavily corroded (k = 7.5 mm). The old pump has been scrapped. What head ∆H would be specified for a pump to restore the system using the old pipes? What would the pump power be? If the pipes were replaced with 150 mm diameter PVC pipes, what pump ∆H would be required?
A residence in Djorwolo used a roof tank to supply water at a nearly constant head. The water was collected in an under floor sump, then pumped back to the roof tank after rainfall. The flowrate was 10 litres/s . The tank was 6m above the sump, and the length of the pipe was 15 m. The old 6” pipes are now heavily corroded (k = 7.5 mm). The old pump has been scrapped. What head ∆H would be specified for a pump to restore the system using the old pipes? What would the pump power be? If the pipes were replaced with 150 mm diameter PVC pipes, what pump ∆H would be required?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A residence in Djorwolo used a roof tank to supply water at a nearly constant head. The water was collected in an under floor sump, then pumped back to the roof tank after rainfall. The flowrate was 10 litres/s . The tank was 6m above the sump, and the length of the pipe was 15 m. The old 6” pipes are now heavily corroded (k = 7.5 mm). The old pump has been scrapped. What head ∆H would be specified for a pump to restore the system using the old pipes? What would the pump power be? If the pipes were replaced with 150 mm diameter PVC pipes, what pump ∆H would be required?
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