Two different heads both have similar RTI. I’d just ask for simple graphic with the two design calc plate.
Best. Bruce Verhei > On Jan 25, 2018, at 11:54, John Paulsen <[email protected]> wrote: > > Guys: > > I have been pouring over 13 all afternoon and I can’t find the requirement > for the scenario I am dealing with, so I humbly ask for your help. > > Hazard: Diesel Engine Mfg plant – Loading > dock area > - 30’ Deck, 20’ Mics Rack Storage, Grp A Plastic containers with > metal parts. > > Existing System(s) 8”x2.5”X8” Grid > > K 8.0 Uprights > .60 GPM/4,000 sq. ft. > > The insurance carrier has done a loss prevention survey and their written > report says they will accept the omission of in rack sprinklers if the > overhead system will support K-16.8 heads and a design density of > .80 GPM/2,000 sq. ft. under section 17.2.1.2.1 (e) (which it will with a > large safety factor) > > My question is this: What restrictions do I have with the overhead > sprinklers and mixing the sprinkler K factors? > Do all of the heads on the system need to be changed to K16.8 or just the > ones within 40’ of the racks? > If I can mix K factors, do I > need a 2’ draft curtain in between like I would if it were ESFR? > > > Thanks, > > John Paulsen – SET > Crown Fire System Design > 6282 Seeds Rd. > Grove City, OH 43123 > P – 614-782-2438 > F – 614-782-2374 > C – 614-348-8206 > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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