Master Plumber Exam Plumbing Codes and Regulations 3

Question 1

Per the IPC, which type of vent is defined as a vent that connects directly to the drain between the trap and the trap arm?

Accepted Answer

Wet vent

Answer

A wet vent serves as both a drain and a vent simultaneously, connecting within the zone between trap and trap arm.

Question 2

According to the IPC, the maximum distance between a water closet trap and its vent is:

Accepted Answer

10 feet

Answer

The IPC allows a trap-to-vent distance of up to 10 feet for a 3-inch water closet drain.

Question 3

Under the UPC, copper tubing used for water distribution inside a building must be at minimum which type?

Accepted Answer

Type M

Answer

The UPC allows Type M copper (thinnest wall) for most interior water supply piping in residential applications.

Question 4

A plumber installs a new lavatory in a commercial building. The IPC requires the drain outlet to be a minimum of:

Accepted Answer

1-1/4 inches

Answer

The IPC specifies that lavatory fixture drain outlets must be a minimum of 1-1/4 inches in diameter.

Question 5

Which ASSE standard governs the performance requirements for pressure-balancing shower valves?

Accepted Answer

ASSE 1016

Answer

ASSE 1016 covers the performance requirements for automatic compensating shower and tub/shower mixing valves.

Master Plumber Exam Practice Test