Volume

1.  A tank measures 80 feet long, 30 feet wide and 20 feet deep.

A.  Calculate the volume in cubic feet.

a.  4,800 ft² b.  48,000 gallons c.  55,000 ft³ d.  48,000 ft³

B.  How many gallons will the tank hold?

a.  175,000 ft³ b.  359,040 gallons c.  235,000 gallons d.  401,000 gallons

2.  A spherical water tower needs to be refilled after service.  If the tank is 30 feet in
     diameter, what is its capacity in gallons?

a.  10,500 ft³ b.  199,320 gallons c.  101,360 ft³ d.  105,428 gallons

A.  How many pounds will that amount of water weigh?

a.  350,000 lbs b.  575,384 lbs c.  762,550 lbs d.  879,270 lbs

3.  How many gallons of water will a tank with a diameter of 30 feet and a height
     of 60 feet hold?

a.  42,390 gallons b.  42,390 ft³ c.  135,291 gallons d.  317,077 gallons

4.  A standpipe has a diameter of 25 feet with an overflow 50 feet above the base.
     The tank is 50% full of water.  How many gallons of water are in the tank?    

a.  24,531.25 ft³ b.  84,531.25 gallons c.  91,747 gallons d.  183,984 gallons

5.  How many gallons will it take to fill a 10-inch pipe that is 250 feet long?

a.  196.25 ft³ b.  1,011.3 gallons c.  1,222.2 gallons d.  1,550.11 gallons

Pressure

          6.  Six pounds per square inch (psi) equals how many feet of water?               

a.  8.34 ft b.  7.5 ft c.  6.49 ft d.  13.9 ft

7.  15 feet of water exerts how many psi?

a.  6.5 psi b.  10 psi c.  15 psi d.  34.65 psi

         8.  A head of 250 feet of water is equivalent to what pressure at the base?

a.  125 psi b.  108 psi c.  250 ft d.  577 psi

9.  The fire department requires a pressure of 60 psi.  How high must the water
     in the tower be to provide this pressure?     

a.  60 psi b.  60 ft c.  120.2 ft d.  138.6 ft

10.  The water level in the tower is 1 foot below the overflow.  The overflow is at
     130 feet.  What is the reading on the pressure gauge that is located 10 feet 
     above the base of the tower?

a.  51.65 psi b.  66.66 psi c.  108.6 psi d.  298 psi

Drawdown

The drawdown of a well is the amount the water level drops once pumping begins.

11.  The water level in a well is 25 feet below the ground surface when the pump
     is not in operation.  If the water level is 48 feet below the ground surface
     when the pump is in operation, what is the drawdown?

a.  23 ft b.  25 ft c.  48 ft d.  73 ft

12.  A well has a static level of 134 feet.  After the pump is started, the level 
    drops to 189 feet.  What is the drawdown?

a.  55 ft b.  134 ft c.  189 ft d.  323 ft

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