And a water curtain allows radiant heat energy to pass but not convective. So fires could start on the other side theoretically. True it's really hard to start a fire at distance with radiant heat alone. It's especially hard with a sprinkler controlled fire. Local AHJ may be sympathetic especially if you have a good practical reason traditional protection won't work, like a paint line on a conveyor track. We've done it and I sleep well at night.
Chris Cahill, P.E. Fire Protection Engineer Sentry Fire Protection, Inc. 763-658-4483 763-658-4921 fax Email: [email protected] Mail: P.O. Box 69 Waverly, MN 55390 Location: 4439 Hwy 12 SW Waverly, MN 55390 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, April 16, 2009 10:04 AM To: [email protected] Subject: RE: rated wall opening We've discussed this before and the answer is no there is no published data of an equivalency. Fire shutter is your best bet. What is the opening for? Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [email protected] http://www.ch2m.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Dewayne Martinez Sent: Thursday, April 16, 2009 10:50 AM To: [email protected] Subject: rated wall opening Is there any testing or criteria in regards to equivalent rating for a water curtain or deluge curtain when protecting an opening in a rated wall? I have a 3' opening in a 3 hour wall and the architect is trying to see if this can be accomplished with a water or deluge curtain. Thanks, Dewayne _______________________________________________ Sprinklerforum mailing list http://lists.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) _______________________________________________ Sprinklerforum mailing list http://lists.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) _______________________________________________ Sprinklerforum mailing list http://lists.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)
