So 2' off the duct and 6'-6" deflector elevation -----Original Message----- From: Todd Williams [mailto:[email protected]] Sent: Friday, July 02, 2010 9:29 AM To: [email protected]; [email protected] Subject: RE: Ceiling pocket
This is the basement of an existing church with a 7'-2" ceiling. I really don't want to leave sprinklers hanging in a public space that low. Damage is already a concern. At 10:20 AM 7/2/2010, you wrote: >Up to max 6" below the duct so max= 18"---- but what is wrong with 12" >deflector and x" from the side of the duct? > >-----Original Message----- >From: Fletcher, Ron [mailto:[email protected]] >Sent: Friday, July 02, 2010 9:16 AM >To: [email protected] >Subject: RE: Ceiling pocket > >If the room (hall) is less than 300 sqft it could be classified as panel >(obstructed) construction and a 22 inch deflector would be okay. Would >that take care of the problem? > >Ron Fletcher >Aero Automatic >Phoenix, AZ > > > >-----Original Message----- >From: [email protected] >[mailto:[email protected]] On Behalf Of Dewayne >Martinez >Sent: Friday, July 02, 2010 7:01 AM >To: [email protected] >Subject: RE: Ceiling pocket > >It doesn't meet the definition provided by 3.3.4, NFPA 13 (10ed) but I >think it meets the intent of the rule. >You would think that since the volume of the high area is within the >limits if what is required to apply the ceiling pocket rule then there >would not be a significant delay in sprinkler operation for the >deflector positioned below the soffit. >But where do you draw the line? Using my Vulcan logic, one could apply >this thinking to any small room with a soffit and I do not think this is >the correct road to follow. >Dewayne > >-----Original Message----- >From: [email protected] >[mailto:[email protected]] On Behalf Of Todd >Williams >Sent: Friday, July 02, 2010 8:32 AM >To: [email protected] >Subject: RE: Ceiling pocket > >Deflector will be about 14". Duct insulation and at least 1" below to >get it in the fitting. > > > >At 09:25 AM 7/2/2010, you wrote: > >Still on first cup so.. > > > >What is the prob with 7'-1"? Can the deflector be installed at 12" >(even > >with BOD) either as upright or pend? > > > > Matt > > > > > > > >Matthew J. Willis, CET > >Automatic Fire Sprinklers > >Norred Fire Systems L.L.C. > >318-387-1134 Voice > >318-816-1087 Mobile > >318-387-1163 Facsimile > >[email protected] > > > >-----Original Message----- > > > >From: [email protected] >[mailto:sprinklerforum- > > > >[email protected]] On Behalf Of Todd Williams > > > >Sent: Friday, July 02, 2010 8:15 AM > > > >To: [email protected] > > > >Subject: Ceiling pocket > > > > > > > >I am working on a building with a 9'-3" wide corridor. Along one >wall > > > >is a duct 2'-9" wide and 12" deep. The sprinkler piping in this >space > > > >will be exposed. My original plan was to run a line along side of >the > > > >duct with sidewalls and put pendent sprinklers under the duct. > > > >(running along the other wall is not an option.) However, the >pendent > > > >sprinklers under the duct will be 7'-1" from the far wall. I was > > > >looking to see if I could apply the ceiling pocket section to this > > > >scenario and eliminate the sidewalls. The total volume of the >pocket > > > >is approximately 225 cubic feet. I can't see why this wouldn't >apply, > > > >but it seems an odd use of the rule. Thoughts? > > > > > > > >Todd G. Williams, PE > > > >Fire Protection Design/Consulting > > > >Stonington, CT > > > >860.535.2080 > > > >www.fpdc.com > > > > > > > >_______________________________________________ > > > >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) > > > > > > > >No virus found in this incoming message. > > > >Checked by AVG - www.avg.com > > > >Version: 9.0.830 / Virus Database: 271.1.1/2968 - Release Date: >07/01/10 > > > >13:35:00 > > > >_______________________________________________ > >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) > >Todd G. Williams, PE >Fire Protection Design/Consulting >Stonington, CT >860.535.2080 >www.fpdc.com > >_______________________________________________ >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) Todd G. Williams, PE Fire Protection Design/Consulting Stonington, CT 860.535.2080 www.fpdc.com _______________________________________________ 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)
