Master Plumber Exam Plumbing Codes and Standards 5

Question 1

Under the IPC, which of the following materials is approved for underground building sanitary sewer piping?

Accepted Answer

Schedule 40 PVC

Answer

Schedule 40 PVC is an approved material for underground building sewer piping per IPC Table 702.2.

Question 2

According to the IPC, what is the maximum vertical drop allowed in a drainage offset using 45-degree fittings before requiring a vent?

Accepted Answer

6 feet

Answer

Per IPC Section 711, horizontal offsets in drainage stacks require venting if the offset exceeds 45 degrees and the vertical portion exceeds 6 feet above the offset.

Question 3

Per the IPC, an island fixture vent (for a kitchen island sink) must rise to a height of at least how many inches above the flood rim before turning horizontal?

Accepted Answer

12 inches

Answer

The IPC requires the island fixture vent to rise at least 6 inches above the flood level rim of the fixture before turning horizontal.

Question 4

Under the IPC, what is required when a p-trap is installed on a fixture where the drain pipe connects to the trap inlet at less than a 45-degree angle?

Accepted Answer

The installation is code-compliant as long as water seal depth is maintained

Answer

The IPC does not restrict the angle at which drain piping connects to a trap inlet as long as the proper trap seal depth of 2 to 4 inches is maintained.

Question 5

Per the IPC, which of the following is a requirement for an interceptor (grease trap) installation in a commercial kitchen?

Accepted Answer

It must be accessible for maintenance and cleaning

Answer

The IPC requires that interceptors and separators be readily accessible for service and maintenance per Section 1003.2.

Master Plumber Exam Practice Test

Master Plumber Exam Practice Test

Master Plumber Exam Plumbing Codes and Standards 5