Steve, you are correct. When I was at FM, they were definitely against extra valves on a system for that reason. However, that is the least of the unnecessary requirements on this project. We did manage, after 2 months, to get the 74+ sprinkler deluge exposure system eliminated. Somebody finally came to the conclusion that it wasn’t necessary for protection from wood frame houses 250 ft away. You just have to pick your battles. Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (ofc) 860-553-3553 (fax) 860-608-4559 (cell)
> > On Nov 7, 2018 at 12:31 AM, <Steve Leyton > (mailto:[email protected])> wrote: > > > > You know, at some point we have to stop being sheep and take the initiative. > I understand that the designer is subordinate to the directive of the > engineer of record. But in this case the EOR is recommending something > that I passionately and organically believe to be a bad practice. Installing > unnecessary control valves adds potential failure links to the chain of > events. Plus unnecessary first cost and unnecessary ongoing cost for > maintenance of these redundant valves and supervisory devices. > > > > Someday, if one of those valves gets left shut and the system fails to > control or suppress a fire, and heaven forbid somebody should be injured or > killed, the designer and everyone else associated with the project will get > sued. There is no good reason to add those valves to system configured as > described. Talking about whether check valves or flow switches are required > just adds to the level of obscuration. To me the issue should be how best to > stand up to the idiot who is specifying this arrangement. > > > > > > Steve Leyton > > > (Sent from my phone; please excuse typos and voice text corruptions.) > > > > > > > > -------- Original message -------- > > From: John Denhardt <[email protected]> > > Date: 11/6/18 11:49 PM (GMT+03:00) > > To: [email protected] > > Subject: Re: Back to back floor controls. > > > > I agree. Check valves are required. > > > John > > > John August Denhardt, P.E. > Strickland Fire Protection > > > > On Nov 6, 2018, at 3:41 PM, Mike Stossel <[email protected] > (mailto:[email protected])> wrote: > > > > > > > > > > > > If I am understanding you question correctly, check valves are required. > > > > > > > > > > > > > > > > 8.16.1.5 Floor Control Valve Assemblies. > > > > > > > > 8.16.1.5.1* Multistory buildings exceeding two stories in height shall be > > provided with a floor control valve, check valve, main drain valve, and > > flow switch for isolation, control, and annunciation of water flow on each > > floor level. > > > > > > > > > > > > > > > > > > Mike Stossel SET > > > > > > > > <image002.png> > > > > > > > > 36 Barren Road > > > > > > > > East Stroudsburg, PA 18302 > > > > > > > > Office: 973-670-2627 > > > > > > > > [email protected] (mailto:[email protected]) > > > > > > > > > > > > > > > > > > > > > > From: Sprinklerforum <[email protected] > > (mailto:[email protected])> On Behalf Of > > Fpdcdesign > > Sent: Tuesday, November 6, 2018 3:38 PM > > To: Sprinklerforum <[email protected] > > (mailto:[email protected])> > > Subject: Back to back floor controls. > > > > > > > > > > > > > > > > > > > > > > I am working on an existing two story plus attic wood frame building. The > > engineer is requiring zone control assemblies (butterfly valve plus riser > > manifold) for every level including the attic. I have designed it so there > > is a bull head tee at the top of a 4” riser with the assemblies on either > > side of the tee. Given that the flow switches are going to be in close > > proximity, should I install a check valve between the butterfly valve and > > the manifold? > > > > > > > > > > > > > > > > Todd G Williams, PE > > > > > > > > > > Fire Protection Design/Consulting > > > > > > > > > > > > Stonington, CT > > > > > > > > > > > > 860-535-2080 (ofc) > > > > > > > > > > > > 860-553-3553 (fax) > > > > > > > > > > > > 860-608-4559 (cell) > > > > > > > > > > > > > > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > (mailto:[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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