Standpipe and Sprinkler Systems in Construction Flashcards

What is the primary purpose of a standpipe system in a building under construction?

Answer: To provide FDNY firefighters with a water supply connection at each floor for fire attack

Standpipe systems provide FDNY with floor-by-floor water connections, allowing hose lines to reach fires without laying hundreds of feet of hose up stairwells.

What is a Post Indicator Valve (PIV) and what does it control?

Answer: An outside-mounted valve that controls water supply to a sprinkler system, with a visible open/shut indicator

A PIV is an outside-mounted valve controlling water supply to the sprinkler system with a post-mounted indicator showing OPEN or SHUT status.

What is the difference between a Class I and Class III standpipe system?

Answer: Class I has 2.5-inch connections for FDNY use only; Class III has both 2.5-inch and 1.5-inch connections for both FDNY and occupant use

Class I standpipes have 2.5-inch hose connections for FDNY use; Class III provides both 2.5-inch FDNY connections and 1.5-inch occupant hose connections.

When is a temporary standpipe system required on a construction site in NYC?

Answer: When the building under construction reaches 6 stories or 75 feet in height

NYC Building Code requires temporary standpipe installation when a building under construction reaches 6 stories or 75 feet.

What does an 'impaired' fire protection system mean on a construction site?

Answer: A fire protection system that is out of service, partially disabled, or has reduced capability

An impaired fire protection system is one that is out of service, shut down, or has significantly reduced capability to detect or suppress fires.

Where are standpipe hose connections typically located in buildings under construction?

Answer: In or adjacent to stairwells at each floor landing

Standpipe hose connections are located in or adjacent to stairwells on each floor so FDNY can connect hose lines while maintaining a safe position in the stairwell.