Using K-8 heads with 1/2 npt is acceptable for retrofits. bv
----- Original Message ----- From: "Brian Harris" <[email protected]> To: [email protected] Sent: Monday, June 24, 2013 11:06:04 AM Subject: RE: Proposing changes to existing system for new storage criteria I also considered the possibility of using a higher K factor head at the ceiling but all the outlets are 1/2", using mechanical tee's would be quite labor intensive. My suggestion of adding Rack Sprinklers seemed like the most cost effective way of bringing the current system up to code, hence the reason for my post. Just looking for other ideas/ options, thanks. Brian Harris, CET BVS Systems Inc. bvssytemsinc.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, June 24, 2013 1:22 PM To: [email protected] Subject: Re: Proposing changes to existing system for new storage criteria An adequate sprinkler system is at the core of high-piled combustible storage protection. But you, or someone else, needs to start with the fire code, and then work towards 13. Someone needs to determine all the requirements. Inside 13, I'd never automatically say in-rack sprinklers are required. I'd go start tracking down what kind of water is available in the main, and while that is in progress, go back to commodity classification, see what a ceiling only design would require. I'd also talk with business. Do they plan on going higher? This is not a project that you can do at third hand. It'd be like using a Ouija ( sp ?) Board. Correction from down to 15' is considerable. Assuming you can apply Fig. 16.2.1.3.4.1 design density is reduced 40% in most cases. Can an acceptable design density be arrived at by using heads with a higher K-factor? If so, this is typically the preferred route. It is also easy to forget to consider whether column protection is required. bv ----- Original Message ----- From: "Brian Harris" < BHarris @ bvssystemsinc .com> To: sprinklerforum @lists. firesprinkler .org Sent: Monday, June 24, 2013 8:51:54 AM Subject: Proposing changes to existing system for new storage criteria I got a call the other day form a local company that bought a cold dark shell approximately 4 years ago and has been using part of it as a storage warehouse for miscellaneous items similar to what you would find at any store checkout counter. Lighters, aspirin, pens, various odds and ends, and they are stored on racks, mostly in cardboard boxes, with the storage as high as 15' in some areas. The other day the AHJ stopped in and recommended they cut slats in the wooden shelving to allow the overhead system to reach the bottom shelves. At first I thought this might work but turns out the overhead system was only designed for AH-2 using standard 5.6k heads so now it looks like they're gonna definitely need rack protection. Any advice or potential problems anyone can see? Brian Harris, CET BVS Systems Inc. Sprinkler Division bvssystemsinc .com< http :// bvssystemsinc .com/> Phone: 704.896.9989 Fax: 704.896.1935 _______________________________________________ Sprinklerforum mailing list Sprinklerforum @lists. firesprinkler .org 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
