Sorry, I also made the assumption that your total floor area exceeded the square footage.
8.16.1.5.3 The floor control valve, check valve, main drain valve, and flow switch required by 8.16.1.6.3 shall not be required where the total area of all floors combined does not exceed the system protection area limitations of 8.2.1. Mike Stossel SET [400dpiLogoCropped] 36 Barren Road East Stroudsburg, PA 18302 Office: 973-670-2627 [email protected]<mailto:[email protected]> From: Sprinklerforum <[email protected]> On Behalf Of Fpdcdesign Sent: Tuesday, November 6, 2018 3:38 PM To: Sprinklerforum <[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)
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