Thank you. Some of the window pockets are 30-50 Ft. long but still under 1000 Cu.Ft..
Old ceiling was 14 Ft. Drop ceiling is 10 Ft. It seems the volume should be the prime consideration not a 4Ft high pocket along an outside window wall. When you divide 1000 by 3 = 333.3 SF. That is a big area with no sprinklers. Depends on the shape of the pocket. Art Tiroly ATCO Fire Protection/Tiroly 24400 Highland Rd CLE 44143 216-621-8899 216-570-7030 cell From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Travis Mack, SET Sent: Tuesday, September 13, 2016 1:36 PM To: sprinklerforum@lists.firesprinkler.org Subject: Re: Ceiling Pockets That makes sense, until you start taking it to extremes. What about a 10' deep pocket under 1000 sq ft? I guess the committee had to draw a line somewhere and 3' was the line. Even though it is potentially a bunch of extra sprinklers, the smaller orifices should limit the hydraulic impact. Travis Mack, SET MFP Design, LLC 2508 E Lodgepole Drive Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 email:tm...@mfpdesign.com http://www.mfpdesign.com https://www.facebook.com/pages/MFP-Design-LLC/92218417692 Send large files to us via: https://www.hightail.com/u/MFPDesign LinkedIn: https://www.linkedin.com/in/travismack On 9/13/2016 10:29 AM, Art Tiroly wrote: Thank you. Some of the window pockets are 30-50 Ft. long but still under 1000 Cu.Ft.. Old ceiling was 14 Ft. Drop ceiling is 10 Ft. It seems the volume should be the prime consideration not a 4Ft high pocket along an outside window wall. Art Tiroly ATCO Fire Protection/Tiroly 24400 Highland Rd CLE 44143 216-621-8899 216-570-7030 cell From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of T. Silva Sent: Tuesday, September 13, 2016 12:51 PM To: sprinklerforum@lists.firesprinkler.org Subject: Re: Ceiling Pockets Skylights and similar pockets not exceeding 32 sq.ft. and separated from other pockets by minimum 10 feet do not require sprinklers. I would try to use that. Tony _____ From: "Travis Mack" <tm...@mfpdesign.com> To: sprinklerforum@lists.firesprinkler.org Sent: Tuesday, September 13, 2016 9:34:20 AM Subject: Re: Ceiling Pockets Just put a 2.8k sprinkler in the pocket. At least that minimizes the hydraulic impact to the system. Travis Mack, SET MFP Design, LLC "Follow" us on Facebook: <https://www.facebook.com/pages/MFP-Design-LLC/92218417692> https://www.facebook.com/pages/MFP-Design-LLC/92218417692 Send large files to MFP Design via: https://www.hightail.com/u/MFPDesign Sent from my iPhone On Sep 13, 2016, at 8:21 AM, Art Tiroly <atir...@atcofirepro.com> wrote: I have 4 Ft wide x 4 Ft deep window pockets in a 100 year old class room building with new drop ceilings. Adding a sprinkler to a window pocket because it is over 3 Ft. deep makes no sense to me in these class rooms. If a pocket sprinkler activates and washes the windows it does nothing for the fire 8-12 Ft. away. I plan to ask for a variance from the Ohio State plans examiner at submittal though likely to no avail. Art Tiroly ATCO Fire Protection From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Brad Casterline Sent: Monday, September 12, 2016 5:51 PM To: sprinklerforum@lists.firesprinkler.org Subject: Re: Ceiling Pockets It's all about activation Ron/Bruce. Roland's insight as to the pass/fail criteria was a stroke of genius. I like to explain it and then Roland corrects me. So I'll forego my part and wait for Roland to get his ears on. Brad On Sep 12, 2016 4:41 PM, "Bruce Verhei" <bver...@comcast.net> wrote: Ron is briefer. On Sep 12, 2016, at 14:39, Bruce Verhei <bver...@comcast.net> wrote: Isn't the idea of using a Volume completely different than viewing his as an Area, such as a large sail sewing table that obstructs coverage as well as delaying operation? Wasn't 1,000 cu ft a consensus guesstimate saying we'd allow a space this big for heat to accumulate in before banking down to activate heads? And experience presumably has shown it works, usually? Putting a head to cover part of it is better if fire is under that head. If fire is away from head will you delay heat from banking down, resulting in a worse situation? I don't know. And I would guesstimate original designer doesn't either. Best Bruce Verhei On Sep 12, 2016, at 11:21, T. Silva <silva...@shaw.ca> wrote: _____ NFPA 13, 2013 8.6.7.2 (1) "The total volume of the unprotected ceiling pocket does not exceed 1000 cu.ft." Is the 1000 cuft only the volume of the pocket that is not sprinklered? For example, there is a pocket that is 30" long x 20' wide x 2' deep, creating a 1200 cuft ceiling pocket. If one row of sprinklers are provided in this pocket (along the 30 foot length), to provide a protected area of 30' x 10' (1) Is the the total volume of the unprotected ceiling pocket still 1200 cuft? or (2) Reduced to 600 cuft, discounting the sprinklered area? Thanks, Tony _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai gn=sig-email&utm_content=emailclient&utm_term=icon> Virus-free. <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai gn=sig-email&utm_content=emailclient&utm_term=link> www.avast.com _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
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