Good afternoon. Have you asked the local fire marshal’s office if stamped plans are available? If first answer is no ask if they’ve been scanned.
Best. Bruce Verhei > On Nov 21, 2018, at 08:09, John Irwin <[email protected]> wrote: > > Now if they could just get this bit of clarification in to the actual code … > > > > John Irwin > Quick Response Fire Protection > > From: Sprinklerforum <[email protected]> On > Behalf Of Kaiser, Dan (DPS) > Sent: Wednesday, November 21, 2018 11:06 AM > To: [email protected] > Subject: RE: Calculation Plates > > NFPA 25, 2017 edition Handbook: > > <image001.png> > > From: Sprinklerforum [mailto:[email protected]] > On Behalf Of Steve Leyton > Sent: Wednesday, November 21, 2018 10:01 AM > To: [email protected] > Subject: RE: Calculation Plates > > Correct. But if the plate is missing and the basis of the system design > isn’t known and no as-built drawings are available, which branch on the > decision tree do you follow? If it’s a retail center, it MUST be Ordinary > 2, right? If it’s an office building it has to be Light, unless the shell > was designed for Ordinary. Would that be Ordinary 1 or 2? If it’s a > warehouse … ??? Seems to me that many of these situations involve a lot > more than just hanging a new sign, unless you have documented knowledge of > the system design or a UL/FM crystal ball. > > SML > > > From: Sprinklerforum [mailto:[email protected]] > On Behalf Of Matthew J Willis > Sent: Wednesday, November 21, 2018 7:45 AM > To: [email protected] > Subject: RE: Calculation Plates > > The answer to your original question is no. NFPA 25 does not require a > calculation. It requires the plate. > > The information on the plate drives the fact that you must now do a > calculation. > To be correct, you would have to use the Original flow test, as that was the > basis of design. So a new flow test more than likely will not match. > Getting a new flow test and calc is NFPA 13. Further NFPA 13 involvement > could come into play if the calcs no longer work. > At this point, you will have moved well beyond 25, and should be operating > under a different scope. > > If you really wanted to have some fun.., 25 just requires the placard to be > in place. > > What if you see a blank one during the inspection? Per 25, you are compliant. > > <image002.jpg> > > R/ > Matt > > Matthew J. Willis, CWBSP > Design Manager /3-D Specialist > Rapid Fire Protection Inc. > 1530 Samco Road > Rapid City, SD 57702 > Office-605.348.2342 > Direct Line-605.593.5063 > Cell-605.391.2733 > Fax:-605.348.0108 > > <image003.png> > > From: Sprinklerforum <[email protected]> On > Behalf Of Wayne Cordiner > Sent: Wednesday, November 21, 2018 7:56 AM > To: [email protected] > Subject: Re: Calculation Plates > > John, > > The key to remember here is in NFPA 25 the intent is to inspect, test and > maintain a previously approved system. With that in mind the plate you’d be > inspecting exists based on the original installation. The data added even to > a new plate should reflect that. > > Regards, > > Wayne T. Cordiner, Jr. > 917-426-5844 > [email protected] > > On Nov 21, 2018, at 05:24, John Irwin <[email protected]> wrote: > > I have been in this industry for 25 years. I believe every company I have > ever worked at has done a hydraulic calculation when replacing Hydraulic > Placards due to an inspection deficiency. But yesterday we were having a > discussion here in the office as to whether or not the calculation was > actually required per NFPA 25. There is no information on the plate that > indicates whether or not the system even works … just what is required. Does > your company do a flow test and calculation when replacing missing plates? > And if so, what happens when you discover that the system no longer works as > originally designed? > > > > John Irwin > > _______________________________________________ > 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
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