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Distribution Question

Water Distribution Practice Exam

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A fire hydrant is 88 feet below the bottom of a reservoir containing 49 feet of water. What is the static water pressure at the fire hydrant?

A	316.5 psi
B	59.3 psi
C	42.6 psi
D	16.9 psi

Question 1 Explanation:

This is a two step problem.

To determine the total amount of head in feet, add the elevation difference from the hydrant to the bottom of the tank to the height of the water in the tank:

88' + 49' = 137'

Now, determine the pressure per square inch (psi) by dividing the total feet of head by 2.31 (2.31 feet of water equals 1 psi):

137 / 2.31 = 59.3 psi

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Water Terms

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