That is why if there are multiple risers it just works out best to provide a single FDC at the backflow or at some designated point on the UG system if it's a private loop, but if the building is large enough to warrant multiple risers but is fed from a municipal system, then a common FDC or FDC tied together is not practical. Signage at risers and a good walkthrough of the facility with the local FD is about the best that can be done. Running hundreds of feet of pipe inside the building between risers to connect FDC's is just a bit over the top.
Craig L. Prahl, CET Fire Protection Group Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [EMAIL PROTECTED] http://www.lg.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: Thursday, March 01, 2007 7:12 PM To: [email protected] Subject: Re: FDC's on multiple systems >From an AHJ point of view more than one FDC on a Building that only >supplies a portion of that building is always a bad idea. Late at night, maybe snowing they drive up to the building, see an FDC, but the strobe or water motor above it isn't flashing or making a sound. They have the right address, even if no smoke or flame is visible, they will still hook up to it before entering the building, guessing that the strobe is broken or water motor broken. Now we've put them at risk, because they don't have time to drive all the way around the building to see if there is another strobe flashing somewhere, or another FDC. This is just a bad idea! Thom McMahon Firetech, Inc. 2560 Copper Ridge Dr Steamboat Springs, CO 80488-2136 Tel: 970-879-7952 Fax: 970-879-7926 ----- Original Message ----- From: "Ed Kramer" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, March 01, 2007 2:27 PM Subject: FDC's on multiple systems > Run into something new that I need opinions on. > > An addition is being added to an existing building. Existing building is > fully sprinklered. The total area of the combined existing and new > structure exceeds 52,000 sf and the existing system riser is in the far > corner away from the addition. So the decision was made to bring in a new > underground supply to serve the new addition. Thus the new addition will > have its own independent system riser and fire department connection. > > Does 2002 NFPA 13 section 8.16.l2.4.3 (or any other section) require the > two FDCs (one existing, one new) be tied together? > > The commentary hints at this, but I've never thought that was the intent. > I thought the intent was that multiple systems SERVED BY THE SAME > UNDERGROUND LEAD-IN be served by the same FDC. Section 8.16.2.4.5 seams > to > support this. > > Opinions? > > Ed Kramer > Littleton, CO > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
