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

Sanitary fixtures like sinks and toilets

Answer

Contaminated industrial process water

Answer

Grease-laden kitchen waste water

Question 2

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

Accepted Answer

100 feet

Answer

50 feet

Answer

75 feet

Answer

150 feet

Question 3

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

Accepted Answer

The sanitary drainage system through an oil interceptor

Answer

The storm sewer directly without any treatment

Answer

A dry well on the property

Answer

An approved retention pond only

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

A flexible pipe connector between the drain and conductor

Answer

A cast iron drain body installed without sealant

Answer

A backwater valve at the base of the conductor

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

A type of dome-shaped roof drain strainer

Answer

A pipe fitting used to join leaders to underground conductors

Answer

A catch basin installed at the base of a downspout

Question 6

Per the IPC, a backwater valve is required on a storm drain connection when:

Accepted Answer

The storm drain connects at a level below the next upstream manhole rim, where backflow could occur

Answer

It is required on every storm drain connection without exception

Answer

Backwater valves are prohibited on storm drains under the IPC

Answer

Only in areas designated as Special Flood Hazard Areas by FEMA

Question 7

According to the IPC, storm water from roofs and paved areas shall NOT be discharged to:

Accepted Answer

The building's sanitary drainage system without specific approval

Answer

A public storm sewer

Answer

A natural watercourse approved by the authority

Answer

A retention or detention pond