Storm Drainage Systems Flashcards
7 cards from real IPC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Storm Drainage Systems flashcards as text
According to the IPC, 'clear-water waste' drainage systems handle discharge from sources such as:
Answer: Non-contaminated sources such as air conditioning condensate and swimming pool backwash
Clear-water waste systems are designed for clean, non-sewage water from sources like HVAC condensate, pool backwash, and similar uncontaminated discharges.
Per the IPC, what is the maximum spacing allowed between cleanouts on a building storm drain?
Answer: 100 feet
The IPC requires cleanouts on building storm drains at intervals not exceeding 100 feet for pipes 4 inches and larger in diameter.
Under the IPC, floor drains in parking garages must connect to:
Answer: The sanitary drainage system through an oil interceptor
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.
Per the IPC, what is required at the joint between a roof drain body and a structural concrete deck?
Answer: A clamping ring that secures waterproofing membrane to the drain body
Roof drains in structural concrete decks require a clamping ring that mechanically secures the waterproofing membrane to the drain body, ensuring a watertight seal.
According to the IPC, what is a 'scupper'?
Answer: An opening through a parapet wall or roof edge that provides secondary overflow drainage
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.
Per the IPC, a backwater valve is required on a storm drain connection when:
Answer: The storm drain connects at a level below the next upstream manhole rim, where backflow could occur
A backwater valve must be installed when the storm drain or its building connections are at a level where surcharging of the public storm sewer could cause backflow and flooding.
According to the IPC, storm water from roofs and paved areas shall NOT be discharged to:
Answer: The building's sanitary drainage system without specific approval
Storm water from roofs and paved areas must not enter the sanitary drainage system unless specifically permitted by the administrative authority, in order to prevent overloading sewage treatment facilities.