IPC Storm Drainage Systems 3

Question 1

According to the IPC, 'clear-water waste' drainage systems handle discharge from sources such as:

Accepted Answer

Non-contaminated sources such as air conditioning condensate and swimming pool backwash

Answer

Clear-water waste systems are designed for clean, non-sewage water from sources like HVAC condensate, pool backwash, and similar uncontaminated discharges.

Question 2

Per the IPC, what is the maximum spacing allowed between cleanouts on a building storm drain?

Accepted Answer

100 feet

Answer

The IPC requires cleanouts on building storm drains at intervals not exceeding 100 feet for pipes 4 inches and larger in diameter.

Question 3

Under the IPC, floor drains in parking garages must connect to:

Accepted Answer

The sanitary drainage system through an oil interceptor

Answer

Parking garage floor drains must discharge to the sanitary system through an oil interceptor because petroleum products and automotive fluids would otherwise contaminate the storm system.

Question 4

Per the IPC, what is required at the joint between a roof drain body and a structural concrete deck?

Accepted Answer

A clamping ring that secures waterproofing membrane to the drain body

Answer

Roof drains in structural concrete decks require a clamping ring that mechanically secures the waterproofing membrane to the drain body, ensuring a watertight seal.

Question 5

According to the IPC, what is a 'scupper'?

Accepted Answer

An opening through a parapet wall or roof edge that provides secondary overflow drainage

Answer

Scuppers are openings through parapet walls or at roof edges that serve as secondary overflow drainage when primary roof drains are blocked or during extreme rainfall events.

IPC - International Plumbing Code Practice Test

IPC - International Plumbing Code Practice Test

IPC Storm Drainage Systems 3