Section Twelve Appendices

Question 1

What is the main purpose of the Appendices section?

Answer 1

To provide quick reference tables, formulas, and conversion data for field and shop use.

Question 2

What formula is used to find the circumference of a circle?

Answer 2

C = π × D.

Question 3

What formula is used to find the area of a circle?

Answer 3

A = π × (D² ÷ 4).

Question 4

What is the formula for the volume of a cylinder?

Answer 4

V = π × r² × h.

Question 5

What is π (pi) commonly rounded to?

Answer 5

3.1416.

Question 6

How many cubic inches are in one cubic foot?

Answer 6

1,728 in³.

Question 7

How many gallons are in one cubic foot?

Answer 7

7.48 U.S. gallons.

Question 8

How many pounds does one gallon of water weigh?

Answer 8

8.34 pounds.

Question 9

How many pounds per cubic foot does water weigh?

Answer 9

62.4 lb/ft³.

Question 10

What is the formula for converting Fahrenheit to Celsius?

Answer 10

°C = (°F - 32) × 5/9.

Question 11

What is the formula for converting Celsius to Fahrenheit?

Answer 11

°F = (°C × 9/5) + 32.

Question 12

How many inches are in a foot?

Answer 12

12 inches.

Question 13

How many feet are in a yard?

Answer 13

3 feet.

Question 14

How many cubic inches are in a gallon?

Answer 14

231 in³.

Question 15

How many ounces are in a pound?

Answer 15

16 ounces.

Question 16

How many pounds are in a ton (U.S.)?

Answer 16

2,000 pounds.

Question 17

How many square inches are in a square foot?

Answer 17

144 in².

Question 18

How many square feet are in a square yard?

Answer 18

9 ft².

Question 19

What is the formula for finding the weight of water in a length of pipe?

Answer 19

Weight = (Volume of water × 62.4 lb/ft³).

Question 20

What is 1 psi equal to in feet of head?

Answer 20

2.31 feet of water.

Question 21

What is 1 foot of head equal to in psi?

Answer 21

0.433 psi.

Question 22

How many psi in one atmosphere?

Answer 22

14.7 psi.

Question 23

How many kPa in one psi?

Answer 23

6.895 kPa.

Question 24

What is the relationship between cubic feet and cubic meters?

Answer 24

1 cubic meter = 35.31 cubic feet.

Question 25

How many liters are in one U.S. gallon?

Answer 25

3.785 liters.

Question 26

What is the density of water at 60°F?

Answer 26

62.4 lb/ft³ or 1.0 g/cm³.

Question 27

What is a BTU?

Answer 27

British Thermal Unit — the amount of heat required to raise one pound of water 1°F.

Question 28

How many BTUs are in one horsepower-hour?

Answer 28

2,545 BTUs.

Question 29

What is a conversion factor?

Answer 29

A numerical value used to change one unit of measure to another.

Question 30

What is the typical conversion factor from inches to millimeters?

Answer 30

Multiply by 25.4.

Question 31

What is the conversion from millimeters to inches?

Answer 31

Divide by 25.4.

Question 32

What is the difference between NPS and OD?

Answer 32

NPS is a nominal designation

Question 33

What information is usually found in Appendix tables?

Answer 33

Conversion charts, pipe weights, dimensions, pressure-temperature ratings, and formula constants.