IPC Compliance and Plumbing Systems 2

Question 1

According to the IPC, what is the minimum air gap required for a lavatory when measured from the flood level rim to the water supply inlet?

Accepted Answer

1 inch

Answer

The IPC specifies a minimum 1-inch air gap for lavatories between the flood level rim and the water supply inlet to prevent backflow contamination.

Question 2

Under the IPC, who is responsible for ensuring that plumbing work complies with the code before it is concealed?

Accepted Answer

The code official

Answer

The code official (inspector) is responsible for inspecting plumbing work before it is concealed to verify compliance with the IPC.

Question 3

What does the IPC require when existing plumbing systems are altered or extended?

Accepted Answer

Only the new work must comply with current code

Answer

The IPC requires that new work on alterations or extensions must comply with the current code, but existing compliant portions do not need to be upgraded.

Question 4

According to the IPC, what is the maximum allowable working pressure for a standard plumbing system?

Accepted Answer

80 psi

Answer

The IPC limits the maximum working pressure in a plumbing system to 80 psi. A pressure-reducing valve is required when supply pressure exceeds this limit.

Question 5

Under the IPC, what documentation must a plumber provide to the code official before beginning work?

Accepted Answer

An approved permit and plans

Answer

The IPC requires that an approved permit and construction documents (plans) be obtained before plumbing work begins.

IPC - International Plumbing Code Practice Test

IPC - International Plumbing Code Practice Test

IPC Compliance and Plumbing Systems 2