IPC Plumbing Fixtures and Fittings 3

Question 1

According to the IPC, what minimum number of water closets must be provided for female occupants in an assembly occupancy with 150 women?

Accepted Answer

5

Answer

Based on IPC Table 403.1, assembly occupancies require 1 water closet per 50 female occupants for the first 150, resulting in a minimum of 3, but the actual IPC table typically requires a higher ratio — 5 fixtures for 150 female occupants.

Question 2

What does the IPC specify about the drainage connection for a clothes washer standpipe?

Accepted Answer

The standpipe must be between 18 and 42 inches above the trap weir

Answer

The IPC requires clothes washer standpipes to be between 18 and 42 inches above the trap weir to prevent both siphonage and overflow.

Question 3

Under the IPC, what type of valve is required on the water supply to each individual plumbing fixture?

Accepted Answer

An accessible shutoff valve

Answer

The IPC requires an accessible shutoff valve on the water supply to each individual plumbing fixture to allow isolation for maintenance or repair.

Question 4

According to the IPC, what is the minimum trap size required for a residential kitchen sink?

Accepted Answer

1-1/2 inches

Answer

The IPC requires a minimum 1-1/2 inch trap for residential kitchen sinks.

Question 5

What does the IPC require regarding drinking fountain installations in buildings?

Accepted Answer

The number required depends on occupancy type and occupant load

Answer

The IPC requires drinking fountains based on occupancy type and occupant load as specified in the minimum fixture count table.

IPC - International Plumbing Code Practice Test

IPC - International Plumbing Code Practice Test

IPC Plumbing Fixtures and Fittings 3