What is the typical material used for water pipes installed underground before 1950?

• Copper

• Galvanized steel

• Polyethylene

• PVC

How is the water usage of a home measured and recorded?

• By the number of faucets

• By the water meter

• By the size of the house

• By the number of residents

What is the purpose of the valve found next to the water meter?

• To control the water pressure

• To allow shutting off the water supply

• To measure water temperature

• To filter the water

What is the term used for pipes serving both cold and hot water?

• Branch lines

• Trunk lines

• Main lines

• Service lines

What is the function of a pressure-balanced anti-scald valve?

• To increase water pressure

• To prevent hot water temperature shocks

• To filter impurities from water

• To reduce water flow

What is the generic plumbing term for any fixed device that uses water?

• Fixture

• Valve

• Trunk line

• Boiler

What is the discharge rate of one fixture unit (FU)?

• One gallon of water per minute

• One liter of water per minute

• One cubic meter of water per minute

• One pint of water per minute

What is the minimum diameter of the drain pipe that carries away a fixture's waste water?

• 1 inch

• 2 inches

• 3 inches

• 4 inches

What is the purpose of a trap in a drain system?

• To increase water flow

• To block the passage of noxious sewer gases

• To reduce water pressure

• To increase the diameter of the pipe

What is the term used for the largest vertical drain pipe extending from the lowest point through the roof?

• Branch

• House drain

• Soil stack

• Trap arm