Peter Thomas -------------------------- Sent from my BlackBerry Wireless Handheld
This message contains information which may be confidential and privileged. Unless you are the addressee (or authorized to receive this message for the addressee), you may not use, copy or disclose to anyone the message or any information contained in the message. If you have received this message in error, please advise the sender by reply e-mail and delete the message. Thank you. -----Original Message----- From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> To: [email protected] <[email protected]> Sent: Fri Jan 18 11:10:18 2008 Subject: RE: Interesting High-Rise Design So long as the manufacturer will warrant/underwrite the listing of a valve within a given range of minimum to maximum flow, it should be okay. Steve Leyton Protection Design & Consulting The foregoing is my opinion only and is not intended to represent the Technical Committee on Standpipe Systems, nor serve as an interpretation of NFPA 14. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mark Watts Sent: Thursday, January 17, 2008 6:14 PM To: [email protected] Subject: Re: Interesting High-Rise Design Any concern with 4" Cla-Val providing minimum flow of sprinkler system? I believe the minimum flow for a 4" Cla-Val is around 50 gpm. Mark Watts ----- Original Message ----- From: "Tom Duross" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, January 17, 2008 4:55 PM Subject: RE: Interesting High-Rise Design > Hi, finished 21 floors today and just have 6 levels of parking left, dual > FDV's and dry systems per level. > The building is actually in this month's contractor magazine, highlighting > the pipe fitter's cool cad work. > You gotta laugh though at their claimed "high-end" computer equipment. > > The floors have dual fed checked systems, larger ones have 2 and smaller > ones have one. BV off the Standpipe to the Cla-Val (w/gauges) and a tee > dropped to the FDV and then another BV to the floor controls which do have > checkvalves. So you can drain the sprinklers and still have the FDV's and > the PRV's only serve one FDV because of the checks on the FCV's. Worked > pissa guys, nice setup, big fan of the design. The average spkr. demands > per hydraulics were 300 at 100 psi, easy peasy. We set the Cla's at 125 > flowing and only static'd back to 150, well below the safeties set at 175. > Really slick setup. All LH floors were set exactly the same, nice and > uniform. The 2 mechanical levels were set a little higher, 135 at 500 and > they only static'd back to 160. > > Giaco's have always been a laborious valve to set and some have a very > high > differential when you're close, like floors with 180-190 PSI. I did a 22 > sty. Marriott over Christmas with the new Elkhart's and they're a joy to > set > over the Giaco's, real easy, smaller and lighter. I think it's a > no-brainer, especially on a union job, to go with the above setup and much > cheaper in the long run and much less on the maintenance side too. All > you > have to do is test the hose valves and you've got your 5 year FDV and 5 > year > PRV test done at the same time and only one per floor per stairwell > instead > of 2. > > Two big fat thumbs up from the fat guys. > Go Pats! > > Tom Duross > > NFPA 14 2007, 7.2.2 (3). > > Steve Leyton > Protection Design & Consulting > > > Steve > > What happened to the restriction that no more than 2 adjacent hose > valves could be controlled by a single PRV (excluding the master PRV > with the redundancy/by-pass/etc). Was that just part of the ROP > activity? In a VERY brief scan of 14, I couldn't find it. > > Roland > > On Jan 17, 2008, at 8:34 AM, Steve Leyton wrote: > >> Good point; I should have added that the PRV should be an inline >> type ahead of the split between hose and sprinkler valves. It's >> still early here. >> >> Steve Leyton >> Protection Design & Consulting >> >> > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
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