· One gallon of water contains 231 Cu. In.

• One cubic foot of water contains 1, 728 Cu. In.

• A cubic foot of water weighs 62.5 pounds.

• A cubic foot of water contains 7.481 (7.5) gallons of water.

• One gallon of water weighs 8.33 pounds.

• There are 128 fluid ounces in one gallon.

• 1 PSI is equal to 2.036 inches of mercury

• One foot of water head = .434 PSI

• One inch of mercury = 1.134 feet

• One inch of mercury = .491 PSI

• Normal Atmospheric Pressure = 14.7 PSI at sea level

• Theoretical Height which water can be lifted by draft is 33’ 9”.

• For every 1000 feet increase in elevation, atmospheric pressure decreases ½ pound.

• 30 inches of mercury = 14.7 atmospheric pressure

• 33.9 feet of water = 30 inches of mercury

W

X

H

B

Y

A

In this gravity fed standpipe system, solve the following:

1. How far above outlet “B” is the water level in the tank if the outlet pressure at “B” is 46.8 PSI?

2. What would the outlet pressure at “B” equal if the water level at “A” is 93.5 feet above “B”?

3. What would the outlet pressure at “Y” be if the “Y” is 162 feet from “A”?

4. How far above “X” is the tank water level if the outlet pressure at “X: is 22.3 PSI?

5. How far above “W” is the water level in the tank if the outlet pressure at “W” is 12 PSI?

Solve the following:

A circular tank measures 20 feet in diameter and 16 feet high. How many gallons of water will this tank hold? How much does the water weigh?

How many gallons of water are there in a 50 foot section of 1 ¾” hose?

How much does the water in the hose weigh?

How many gallons of water are in 100 feet of 5” hose

Estimated Time: 30 minutes

Training Module Number: #190