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Week 9 Team Battle (S2017) Use the Haaland equation to calculate the friction factor Problem 1: Water at 60 °F flows steadily through a pipeline with diameter 4.70 in and absolute roughness of 5×10-6 ft. Pumps A and B are spaced 500 ft apart, and the pressure immediately after pump A is 65 psi (gage). What is the maximum flowrate through the pipe (gpm) that would ensure the pressure just before pump B does not fall below the vapor pressure? (this would be bad because it leads to cavitation) Note: Vapor pressure is often expressed as an absolute pressure. You must draw a correct CV to get full credit Problem 2: Water at 60 °F flows from a water tower through a pipe system into the atmosphere at a rate of 1.23 ft³/s. The

          Week 9 Team Battle (S2017)
**Use the Haaland equation to calculate the friction factor**
Problem 1:
Water at 60 °F flows steadily through a pipeline with diameter 4.70 in and absolute roughness of 5×10-6 ft.
Pumps A and B are spaced 500 ft apart, and the pressure immediately after pump A is 65 psi (gage).
What is the maximum flowrate through the pipe (gpm) that would ensure the pressure just before pump B
does not fall below the vapor pressure? (this would be bad because it leads to cavitation)
Note: Vapor pressure is often expressed as an absolute pressure.
** You must draw a correct CV to get full credit **
Problem 2:
Water at 60 °F flows from a water tower through a pipe system into the atmosphere at a rate of 1.23 ft³/s. The

Week 9 Team Battle (S2017)
**Use the Haaland equation to calculate the friction factor**
Problem 1:
Water at 60 °F flows steadily through a pipeline with diameter 4.70 in and absolute roughness of 5×10-6 ft.
Pumps A and B are spaced 500 ft apart, and the pressure immediately after pump A is 65 psi (gage).
What is the maximum flowrate through the pipe (gpm) that would ensure the pressure just before pump B
does not fall below the vapor pressure? (this would be bad because it leads to cavitation)
Note: Vapor pressure is often expressed as an absolute pressure.
** You must draw a correct CV to get full credit **
Problem 2:
Water at 60 °F flows from a water tower through a pipe system into the atmosphere at a rate of 1.23 ft³/s. The

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