FIRE VENTILATION SHAFT FOR SUBWAYS! 1

[jkwan68]

Hi guys,

I was wondering if anyone can find an article on the design of fire ventilation shafts for a subway station.

Typically, subway stations have a ventilation system to release hot air / suck in cold air to cool the train, but what i'm looking for is what is more commonly being implemented in subway stations: A structure (around 12 feet above ground) that contains a fan within to suck the smoke out of the subway station in the case of a fire.

ANY ANY ANY help would be truly appreciated, as this is quite an important and urgent matter!

THANKS!!

 

[jdonville]

jkwan,

Try broadening your search to include articles on transportation tunnels (rail, highway) in general rather than subway tunnels in specific.

http://www.tfhrc.gov/focus/nov05/03.htm

http://international.fhwa.dot.gov/uts/

http://www.fhwa.dot.gov/bridge/tunnel/maintman00.cfm

Jeff

 

[bridgebuster]

You need to follow NFPA 502 (National Fire Protection Association). There are two cases to consider: Normal operation and smoke condition.

Generally with a subway, the movement of the trains creates a piston effect to keep fresh air moving.

The design for a fire condition requires extensive analysis; usually done by computational fluid dynamics. Also, the 12' height of the shaft might not be sufficient for security reasons. There's some work going on in NYC that will require 40' vent shafts to deter terrorists.

 

[bridgebuster]

Made a mistake; NFPA 130 is the standard for subway systems.

502 is for road tunnels.

 

[jkwan68]

Thanks for the help guys, I'll see what I can find.