The window sprinkler was tested using the exact same criteria as is used to establish any other rated assembly. A test fire is built on one side of the subject and burned for the duration of the rating and then there's a steady-stream hose test (not entirely sure if that's of the same duration - Drucker, chime in now please) during which water is jetted against the subject and it can't fail. I think your assumption is correct that the surface is protected so long as the sprinkler(s) flow at their minimum required rate - 15 or 20 GPM depending on spacing.
Steve Leyton Protection Design & Consulting San Diego, CA -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, October 01, 2008 6:43 AM To: [email protected] Subject: RE: Window Sprinklers Just a guess but I think the window damage (without the sprinkler protection) would occur within the first minutes. Once the minimum water discharge is established I would assume the protection would last as long as the water is flowing. Does this sound logical? Bill Brooks William N. Brooks, P.E. Brooks Fire Protection Engineering Inc. 372 Wilett Drive Severna Park, MD 21146 410-544-3620 Phone 410-544-3032 FAX 412-400-6528 Cell -------- Original Message -------- Subject: RE: Window Sprinklers From: "Bill Minkel" <[EMAIL PROTECTED]> Date: Wed, October 01, 2008 9:27 am To: <[email protected]> Ahhhhh, Gotcha Bill Minkel, Designer Dallas, TX -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: Tuesday, September 30, 2008 3:16 PM To: [email protected] Subject: RE: Window Sprinklers Of course it's MORE than adequate for a 1 hr wall, the question was is there a "Less" that would work for 1 hr, but not 2 hr? Maybe a smaller orifice or totally different head or even a vert. sidewall? Hence "Window Sprinkler Lite" Thom McMahon, SET Firetech, Inc. 2560 Copper Ridge Dr P.O. Box 882136 Steamboat Springs, CO 80488 Tel: 970-879-7952 Fax: 970-879-7926 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bill Minkel Sent: Tuesday, September 30, 2008 11:29 AM To: [email protected] Subject: RE: Window Sprinklers Educate me here, I would have thought that a wall assembly rated for 2 hours would also be more than adequate for 1 hour? Bill Minkel, _______________________________________________ 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) __________ Information from ESET NOD32 Antivirus, version of virus signature database 3485 (20081001) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3485 (20081001) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
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