I thought Todd said this was a 2-story building?
I’d use the check valves but more for good ‘engineering practice’. I’m not certain that they are ‘required’, based on the info Todd provided. Just my opinion. Cliff Whitfield, SET President Fire Design, Inc. 184 Comfort Place Burnsville, NC 28714 Ph: 828-284-4772 <mailto:[email protected]> [email protected] <http://www.fire-design.com/> www.fire-design.com From: Sprinklerforum <[email protected]> On Behalf Of John Denhardt Sent: Tuesday, November 6, 2018 3:49 PM 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 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
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