Thank you for all the answers. I will study them.And I appreciate them. For me the Forum is like an University. I always use the knowledge obtained in the Forum in my job. Mario Berrios, P.E. -----Original Message----- From: [EMAIL PROTECTED] To: [email protected] Sent: Sat, 13 Jan 2007 12:14 PM Subject: Re: max velocity
I agree! Anarchy and Chaos have been put in check since Sheriff Muncy rode into town, to clean up this forum. Have a nice weekend all, we'll resume stretching the boundaries of logic and common sense again Monday! Thom McMahon Firetech, Inc. 2560 Copper Ridge Dr Steamboat Springs, CO 80488-2136 Tel: 970-879-7952 Fax: 970-879-7926 ----- Original Message ----- From: "George Church" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, January 13, 2007 9:21 AM Subject: RE: max velocity > If 32 FPS is good, and 20 FPS better- > Let's regulate it down to BEST- > ZERO FPS > There would be no friction loss. > Pipe sizes would be standardized on most systems to all being 8". > Bids would all be based on this- so bids would be more even. > We'd win coordination battles since now we're not the smallest piping in > > the > area, hence easiest to move. > And fly-by-night sprinkler contractors would go away since they don't have > the tools for 8". > > Great idea ! I doubt the committee will, absent any engineering data, > limit > velocities in the future. And there's a lot more to bidding than velocity > and pipe sizes- > > I could Bid a 30' high spec building for .4/2000 so they could store a > reasonable amount of rack storage in their building, and if the supply is > strong, be 50 FPS. > > My competitor could bid it OH2 and limit storage to 12' (although tenant > won't) and be 20 FPS but still win- since he's using 400 sf/head ECOH > sprinklers. > > It's been some time since we worried about velocity, and I don't think > > we're > experiencing anarchy and chaos. > > George Church > Rowe Sprinkler > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Garth W. > Warren > Sent: Saturday, January 13, 2007 11:09 AM > To: [email protected] > Subject: Re: max velocity > > Mario - I think to make the leap from water velocity in a sprinkler system > piping to anarchy and chaos might be pushing the ticket a tad. > > As far as "For the same job if a contractor calculates the pipe with 20 > fps > , other contractor calculates with 30 fps and another with 50 fps; the > contractor with 50 fps will win the bid. Is that correct? is that > fair?" > the answer is YES and YES. > > The only way the design velocity will be reached is if all the sprinklers > > in > the design area operate and discharge. Have you ever been to a fire scene > where the remote area sprinklers - all of them by the way - have actually > been the sprinklers which controlled or extinguished the fire? > >>From what I have heard on here, fast velocity causes excess friction loss > and is self-regulating. If you have data that shows a poor sprinkler > system > response to a fire was caused by the velocity of the water, sharing that > data would convert many that do not share your passion at this time. > Until > then, adhering to all of the current requirements, and basing your design > > on > those requirements, should be considered admirable. > > Garth > > ----- Original Message ----- > From: <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Saturday, January 13, 2007 10:11 AM > Subject: Re: max velocity > > >> Mark, >> Several years ago I wrote several e-mails to the Forum on this subject; > they may be in the Archives. In the past 20 fps was indicated in NFPA 13; > slowly thru the years that 20 fps was taken out; if a limit is not given > then anarchy , chaos will happen. I have reviewed plans with 56 fps and > the > contractor is right ,nfpa 13 says no limits in velocity. The statement > > about > good design , conservative design, prudent design is not read. >> For the same job if a contractor calculates the pipe with 20 fps , other > contractor calculates with 30 fps and another with 50 fps; the contractor > with 50 fps will win the bid. Is that correct? is that fair? >> Mario Berrios,P.E. >> > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum ________________________________________________________________________ Check out the new AOL. Most comprehensive set of free safety and security tools, free access to millions of high-quality videos from across the web, free AOL Mail and more. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
