This situation is about both getting heat up to the sprinkler and getting some water down, at least onto the door. At design stage then slatted shelving or keeping the shelf back from the door face by say 50mm. This would then allow heat up and water down the inside of door. At this completion stage I would drill a number 50mm or 80mm holes in shelf with hole saw and produce vents between the two parts. A bit academic but good practise is to have the shelf with the gap at the door edge. If the closet is in a sleeping space (bedroom) then there is a good case for remedial action due to the risk of a fire building up in the lower space before actuating the sprinkler, and producing larger amounts of toxic gases. I would expect a quick response standard spray sprinkler would be used. Russell Gregory Christchurch, New Zealand Ph 03 338 4853 e-mail [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Todd Williams Sent: Thursday, 26 April 2012 5:14 AM To: Charles Thurston; [email protected] Subject: Re: Residential Utility Closet
I have run into similar situations and a grated shelf was required. At 12:55 PM 4/25/2012, you wrote: >Hello RFletcher, > > From the way I read this the shelf blocks ALL of the space side to >side AND front to rear in the space below the AC unit. How does the >Sprinkler water get to the space where the hot water heater is? > >Wednesday, April 25, 2012, 10:10:03 AM, you wrote: > >> 2'-10" x 2'-10" closet with 9 ft ceiling. A full width and depth >> shelf is at 4'-2" above the floor. AC unit sits on the shelf and >> water heater is below, there is a typical 6'-8" door on the closet . >> Applicable code is 2002 NFPA #13. The inspector is insisting that we >> add sprinkler beneath the shelf to cover the water heater because of >> the obstruction from the shelf supporting the AC. Of course it is >> near the end of the project and this is the first time the issue has >> been raised. We pointed out that 6.4.6.3.1 in 13R (2010) and the >> handbook says one head is enough in 400 sqft. closet. The inspector >> says that 13R doesn't apply and that 13 is blah blah blah. He is >> technically correct but holy cow 2 heads in a six square feet closet? > >> I thought that if I could find the ROP and ROC for what is currently >> 6.4.6.3.1 in 13R that there would be something in the substantiation >> we could send to the inspector. Or do you think the inspector is >> right, do we need another sprinkler? > > >> Ron Fletcher >> Aero Automatic >> Phoenix, AZ > > > >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > >> ----- >> No virus found in this message. >> Checked by AVG - www.avg.com >> Version: 2012.0.1913 / Virus Database: 2411/4958 - Release Date: >> 04/25/12 > > > > >-- >Best regards, > Charles mailto:[email protected] > > Confidentiality Notice: This e-mail message, including any > attachments, is for the sole purpose of the intended recipients and > may contain confidential and privileged information. Any unauthorized > review, use, disclosure or distribution is prohibited. If you are not > the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. > >_______________________________________________ >Sprinklerforum mailing list >[email protected] >http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum 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 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
