If I remember correctly the words used from someone years ago that was present at the testing were "Catastrophic effect"
R/ Matt Matthew J. Willis, CET Automatic Fire Sprinklers Norred Fire Systems L.L.C. 318-387-1134 Voice 318-387-1163 Facsimile [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Matt Grise Sent: Thursday, December 17, 2009 8:30 AM To: '[email protected]' Subject: RE: ESFR DOES WHAT??? My understanding is that smoke vents impair the function of esfr systems by drafting heat away from the fire area and setting off sprinklers that don't help with suppression. Matt Grisé PE*, LEED AP Sales Engineer Alliance Fire Protection *Licensed in KS & MO 913.888.0647 ph 913.888.0618 f 913.927.0222 cell www. AFPsprink.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, December 17, 2009 8:21 AM To: [email protected] Subject: RE: ESFR DOES WHAT??? We got a similar response where the vents were used for the increased distance. The Underwriter required the vents to be either manual or have links at a higher temp rating than the sprinklers and the AHJ concurred. Vents had to go in. 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 Fletcher, Ron Sent: Thursday, December 17, 2009 9:10 AM To: [email protected] Subject: RE: ESFR DOES WHAT??? I think some time ago we asked for an interpretation from ICC and were told that vents are required with ESFR's if the egress distance exception is taken. If I can find a record of the emails I'll let you know. It may also have been a topic on the ICC Forum. Ron Fletcher Aero Automatic Phoenix, AZ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of George Church Sent: Thursday, December 17, 2009 7:04 AM To: [email protected] Subject: RE: ESFR DOES WHAT??? Vince, we did a job last year where our variance was approved and here's the logic train: Egress distance can be increased past 250' if heat and smoke vents are provided. So we "pencil vents in". Then we provide an ESFR system so the vents aren't required, erase them. Extended egress distance in section labeled Extended egress distance with heat and smoke Vents was basis for the increase granted, but none of them were installed. The architect chairing the variance committee voted for us, the other two guys split, it carried. Yes, you can omit H&S vents with ESFR but I'd read the fine print and if you need to, as the top example illustrates, about anything is possible with linguistics. glc -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Vince Sabolik Sent: Thursday, December 17, 2009 8:48 AM To: [email protected] Subject: ESFR DOES WHAT??? Good morning, forum -- I want to use control mode heads in an existing warehouse building under 30 ft in height. Somebody (working for the owner) says that he would prefer ESFR heads because (his thought) it eliminates the requirement for heat and smoke vents. If that's true, I would have thought that the sprinkler manufacturer's marketing people would have jumped all over this. That aside, has anybody else ever run into anything like this? thanks! Merry Christmas! Vince Vince Sabolik Christi Fire Protection, Inc. 11351 Pearl Road Strongsville, Ohio 44136 T 440 572-7730 F 440 572-7719 Email: <mailto:[email protected]>[email protected] _______________________________________________ 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) _______________________________________________ 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) _______________________________________________ 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) _______________________________________________ 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) _______________________________________________ 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) _______________________________________________ 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)
