Of course, the IITRI study was done with the door in the closed position. As pointed out by Chris, George and others, "passive protection" barriers are only as good as their integrity. If the door is left open or propped open, if the gyp board rated wall has had holes punched in it by the cable guy or if the clothes dryer mechanic runs flexible plastic dryer vent through the rated wall, the barrier will likely not do its job. BTW, several editions ago of the Life Safety Code, there was a scheme for protecting apartment buildings by corridor sprinklers with a single sprinkler on the inside of each entry door to an apartment. The idea was to prevent a fire inside an apartment from spreading into the corridor and preventing egress from other apartments. That is still considered acceptable in existing apartment buildings with limitations on the travel distance to an exit stair or outside exit door. It is no longer permitted for the protection of new apartment buildings.
Dave David A. de Vries, P.E., CSP Firetech Engineering Incorporated --- On Sun, 11/15/09, David de Vries <[email protected]> wrote: From: David de Vries <[email protected]> Subject: Re: non-rated door To: [email protected] Date: Sunday, November 15, 2009, 10:53 AM Trusting to memory, which may not be the greatest, I recall that many, many years ago IIT Research Institute's Fire Research Group ran a test on an ordinary wood panel door with a single sprinkler discharging at 0.10 density about 5 feet from the face of the door. After an hour of fire exposure, they stopped the test since there was no damage to the door. The chief engineer of that group and a good friend of mine, Tom Waterman, passed away some 10 years ago. I have no idea how to track down that study or their report. _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
