Centered on the partial height partitions sounds perfect, and with a little creative staggered spacing you could avoid baffles.
Odds are your AHJ would concur. You're welcome and thank you for my weekend sprinkler puzzle ;) Brad On Jan 29, 2017 1:16 PM, <[email protected]> wrote: > Thanks guys for your comments. I feel like I am trying to choose between > evils here. If I can't place the sprinkler over the top of the low > partition to spray on both sides, I am definitely going to cold shower on > the 5' & 7' wide units....this project just became 4 stories of real > problems. > > Thanks, > John Paulsen > Crown Fire System Design > > Get Outlook for Android <https://aka.ms/ghei36> > > > > > On Sun, Jan 29, 2017 at 1:29 PM -0500, "Pete Schwab" <[email protected]> > wrote: > > There have been submittals to SSI to allow the partition rule for OH. They >> have been rejected since no one has submitted testing data. So in response >> to the original question, yes you have to consider each partition as it >> went to the ceiling and yes you still have to be concerned with cold >> soldering. Many of the national self-storage facility owners/builders >> understand that the top of storage must be 18” from the sprinkler deflector >> (Usually accomplished with chicken wire) . >> >> >> >> Pete Schwab >> >> >> >> My opinion only and not that of the NFPA or any of its committees >> >> >> >> *From:* Sprinklerforum [mailto:sprinklerforum- >> [email protected]] *On Behalf Of *Brad Casterline >> *Sent:* Sunday, January 29, 2017 12:59 PM >> *To:* [email protected] >> *Subject:* RE: Floor mounted obstructions - ORDINARY HAZ >> >> >> >> John, >> >> I agree with your 'common sense' statement, so this has been bothering me >> since you posted it. >> >> I'm looking at NFPA 13 (2013), Fig. 8.6.5.2.2, and imagining my cubicle >> at the office. "A"=~36" and "B"=~30". The next sprinkler to the right is >> about 11' from the partition. >> My space is to the right side, and I have a kind of narrow counter >> against the partion with papers and prints scattered across it. >> Now I imagine the sprink shown in the fig activating, and 20-30% of the >> pattern being thrown over the partition and landing on the floor a few feet >> beyond the counter. >> Maybe The Committee felt that type of thing would be acceptable for LH >> but not OH? >> >> Brad >> >> On Jan 28, 2017 11:39 AM, "John Paulsen" <[email protected]> wrote: >> >> Jeff: >> >> >> >> Amen on the “not clearly stated”! I saw that paragraph, but it appeared >> to me to refer more to obstructions from the ceiling not the floor. I’m >> trying to throw over the top of the partition and it would be nice if >> NFPA-13 could give a spacing table for Ordinary Hazard like it does for >> “Light Hazard only”. That’s the frustrating part, common sense says the >> same or similar spacing would apply, but Ordinary Hazard is not included. >> >> >> >> Thanks, >> >> >> >> John Paulsen – SET >> >> Crown Fire System Design >> >> 6282 Seeds Rd. >> >> Grove City, OH 43123 >> >> P – 614-782-2438 <(614)%20782-2438> >> >> F – 614-782-2374 <(614)%20782-2374> >> >> C – 614-348-8206 <(614)%20348-8206> >> >> >> >> >> >> >> >> *From:* Sprinklerforum [mailto:sprinklerforum- >> [email protected]] *On Behalf Of *Jeff Normand >> *Sent:* Saturday, January 28, 2017 12:32 PM >> *To:* [email protected] >> *Subject:* Re: Floor mounted obstructions - ORDINARY HAZ >> >> >> >> Not that clearly stated but here's the NFPA 13 2016 edition >> >> >> >> >> >> 8.6.5.3.1 Continuous or noncontinuous obstructions that interrupt >> >> the water discharge in a horizontal plane more than >> >> 18 in. (450 mm) below the sprinkler deflector in a manner to >> >> limit the distribution from reaching the protected hazard >> >> shall comply with 8.6.5.3. >> >> >> >> 8.6.5.3.2 The requirements of 8.6.5.3 shall also apply to obstructions >> >> 18 in. (450 mm) or less below the sprinkler for light >> >> and ordinary hazard occupancies. >> >> >> >> A.8.6.5.3.3 When obstructions are located more than 18 in. >> >> (450 mm) below the sprinkler deflector, an adequate spray >> >> pattern develops and obstructions up to and including 4 ft >> >> (1.2 m) wide do not require additional protection underneath. >> >> Examples are ducts, decks, open grate flooring, catwalks, >> >> cutting tables, overhead doors, soffits, ceiling panels, >> >> and other similar obstructions. >> >> >> >> On Sat, Jan 28, 2017 at 11:10 AM, John Paulsen <[email protected]> wrote: >> >> I am trying to determine the proper deflector distance from a partition >> with the top located 18” below the sprinkler deflector. This is an Ord Haz >> Grp II Self Storage facility with standard spray QR Tyco TY-FRB TY3131 >> uprights. Sec 8.6.5.2 doesn’t give a table like 8.6.5.2.2 which is for >> Light Hazard only. >> >> >> >> If I have to space the heads as if the low partitions went all the way to >> the deck, I will violate the 6’ minimum rule. What am I missing here? >> >> >> >> Thanks, >> >> >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. >> org >> >> >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. >> org >> >> > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler. > org > >
_______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
