Do not concur. If the cloud condition is such that your best judgment is to provide a complete complement of sprinklers above, then you would calculate either above or below the clouds, as we always have for obstructions like ducts and in accordance with the exception spelled out in 22.4.4.6.3 (2007 ed.). We often use SSP's above clouds and EC's below, especially when existing sprinklered buildings are being re-modeled or there's tenant turnover in an office shell, so sometimes it's two separate calc' areas but not a concurrent calculation of two different complements of sprinklers.
Steve Leyton Protection Design & Consulting San Diego, CA -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Friday, February 06, 2009 2:21 PM To: [email protected] Subject: Re: CEILING CLOUDS - AGAIN And calculate both levels of sprinklers. You have no idea what is really going to happen on a fire. Sent from my Verizon Wireless BlackBerry -----Original Message----- From: "Jeff Hewitt" <[email protected]> Date: Fri, 6 Feb 2009 16:07:37 To: <[email protected]> Subject: RE: CEILING CLOUDS - AGAIN Travis, Since we have no specific guidance on this topic, my recommendation is that you must protect to deck first, and deal with the obstructions second. With this criteria, I would recommend both above and below the clouds. Just my thoughts Jeff Hewitt, PE, SET, SFPE (Professional Member) Corporate Engineer 241 Hughes Lane St. Charles, MO 63301 636-946-0011 636-946-5172 (fax) 314-574-6989 (cell) Fire Sprinklers Save lives. Can You Live Without Them? -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Travis Mack, SET Sent: Friday, February 06, 2009 3:50 PM To: [email protected] Subject: CEILING CLOUDS - AGAIN I have a project with lots of floating clouds. The clouds slope with the roof deck and are 1' below the roof deck. If I place a sprinkler in the cloud, is one req'd in the space above the cloud? I would normally put sprinklers above the clouds, but with the deflector already at 12" below the roof deck based on the cloud height, do you really need the sprinklers above the clouds? Please feel free to call if you have any questions or comments. Travis Mack, SET <mailto:[email protected]> _______________________________________________ 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 3834 (20090206) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3835 (20090206) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com _______________________________________________ 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)
