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9 questions. show work on a piece of paper. 9 questions. show work on a piece of paperQUESTION 1
1.
Use Bernoulli’s Equation to solve for the pressure gauge reading at Point 1.
QUESTION 2
1.
Using the answer above (Question 1), how high would a water tower need to be to generate that
QUESTION 3
1.

What is the water velocity in the 12 inch pipe? And how many gpm are flowing?
QUESTION 4
1.
Using the flow in gpm from above (Question 3) , what would the water plant capacity need to be to
meet a fire protection demand?
QUESTION 5
1.
With water flowing in the system below, how much pressure is lost due to friction? Give your answer
in feet and psi.
QUESTION 6
1.

If Q at Point 1 is 500 gpm, find V1, V2 and Q2
QUESTION 7
1.
Using Q2 from above (Question 6) , what would be the pressure loss per foot due to friction if the pipe
is a sch. 40 steel pipe, black steel as used on wet sprinkler systems? (Using Hazen-Williams EQ)
(round to 6 decimals)
QUESTION 8
1.
Calculate the flow from each hydrant as noted below.
A. 2 1/2″ outlet, Cd=0.9, pitot tube 42 psi
B. 5″ outlet, Cd=0.9, pitot tube 42 psi
C.
2 1/2″ outlet, cd=0.8, pitot tube 27 psi
QUESTION 9
1.

If 2 gpm of water at 60oF is flowing in an 1 inch pipe, what is the Reynolds number? Is the flow
Laminar or Turbulent?

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