FREE IPC Plumbing Fixtures and Fittings Questions and Answers

Question 1

A plumber is installing a new bathroom group. According to the IPC, what is the minimum required clearance from the centerline of a water closet to a side wall or partition?

Accepted Answer

15 inches

Answer

21 inches

Answer

30 inches

Answer

18 inches

Question 2

Which of the following is a requirement for individual shower valves according to the IPC to protect against scalding?

Accepted Answer

They must be of a balanced-pressure, thermostatic, or combination type.

Answer

They must be manually-operated gate valves.

Answer

They must be equipped with an in-line thermostatic valve.

Answer

They are not required to have temperature-limiting devices.

Question 3

When installing a domestic dishwasher, the drainage hose is connected to the kitchen sink drain. To prevent backflow from the sink into the dishwasher, what does the IPC require?

Accepted Answer

A high loop in the drain hose or an air gap fitting.

Answer

A direct connection with a minimum 1-inch diameter hose.

Answer

A flexible connector with a shutoff valve.

Answer

A connection to a separate floor drain.

Question 4

A bidet is being installed in a residential bathroom. What is the maximum allowable water temperature for the bidet fitting, as specified by the IPC?

Accepted Answer

110°F (43°C)

Answer

100°F (38°C)

Answer

120°F (49°C)

Answer

140°F (60°C)

Question 5

The waste from a residential automatic clothes washer discharges into a standpipe. According to the IPC, the fixture drain for this standpipe must connect to a branch drain or stack of what minimum diameter?

Accepted Answer

3 inches

Answer

1 1/2 inches

Answer

2 inches

Answer

4 inches

Question 6

Which of the following plumbing fixtures is explicitly prohibited by the International Plumbing Code?

Accepted Answer

Trough urinals.

Answer

Water closets with a flush volume of 1.6 gallons.

Answer

Wall-hung urinals.

Answer

Bidets with hot and cold water supply.