FREE IPC Traps, Interceptors, and Separators Questions and Answers

Question 1

According to the IPC, what is the required range for the depth of a liquid seal in a standard plumbing fixture trap?

Accepted Answer

2 inches to 4 inches

Answer

1 inch to 3 inches

Answer

3 inches to 5 inches

Answer

4 inches to 6 inches

Question 2

A vehicle repair garage with floor drains is being constructed. Which of the following is required by the IPC before waste is discharged into the building drainage system?

Accepted Answer

An oil separator

Answer

A grease interceptor

Answer

A sand interceptor

Answer

A lint trap

Question 3

Which of the following trap designs is expressly prohibited by the International Plumbing Code because it relies on moving parts to maintain its seal?

Accepted Answer

A trap with a float ball mechanism

Answer

P-trap

Answer

Drum trap

Answer

S-trap

Question 4

A new restaurant is installing a large, gravity-type grease interceptor outside the building. What does the IPC mandate regarding the installation to ensure proper function and service?

Accepted Answer

It must be equipped with a vented flow-control device.

Answer

It must be installed within 5 feet of the final cooking fixture.

Answer

It must be buried at least 48 inches below grade.

Answer

It must receive waste from sanitary fixtures to ensure constant flow.

Question 5

A commercial car wash is being planned. To handle the heavy solids that will be washed off vehicles, the IPC requires the installation of what specific type of device?

Accepted Answer

A sand interceptor with a minimum 6-inch water seal

Answer

A hydromechanical grease interceptor

Answer

A solids separator with a chemical feeder

Answer

An oil separator with a minimum capacity of 500 gallons

Question 6

Regarding the general installation of interceptors and separators, which of the following is a key requirement according to IPC Chapter 10?

Accepted Answer

Access must be provided for service and maintenance.

Answer

They must be made of cast iron exclusively.

Answer

They must be located in an area with a temperature below 60°F.

Answer

They must be cleaned on a bi-annual schedule mandated by the code.