What Reed said - it can be either a small hose connection or a standpipe. I think small hose connection is the simplest classification and you add 50 GPM to the POC (or to each of two depending on size/configuration of the stage). It might also be worth a chat with the responding FD to see if you can get relief from the installation of hose and nozzle. What we've done in the past for some FDs is furnish a 2½" FHV with a 2½" x 1½" reducer and no hose. If the FD ever needed more water out of the valve they could pump the FDC like crazy.
Highly unlikely these connections will ever be used in a real-world scenario regardless of how they're configured but the code says what it says ... The preceding is my personal opinion only, Steve Leyton -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Reed A. Roisum, SET Sent: Thursday, March 15, 2018 12:46 PM To: [email protected] Subject: RE: stages You can come off the overhead system with a 1 ½" hose connection in a fully sprinklered building. Here is a reference from 2009 IBC regarding stage hose connections... note the exception. I think it is the same in the more current codes, just had this one handy. [F] 905.3.4 Stages. Stages greater than 1,000 square feet in area shall be equipped with a Class III wet standpipe system with 1 1/2-inch and 2 1/2-inch hose connections on each side of the stage. Exception: Where the building or area is equipped throughout with an automatic sprinkler system, a 1 1/2-inch hose connection shall be installed in accordance with NFPA 13 or in accordance with NFPA 14 for Class II or III standpipes. [F] 905.3.4.1 Hose and cabinet. The 1 1/2-inch hose connections shall be equipped with sufficient lengths of 1 1/2-inch hose to provide fire protection for the stage area. Hose connections shall be equipped with an approved adjustable fog nozzle and be mounted in a cabinet or on a rack. I have found that many fire departments do not want these installed so worth checking...actually, State of MN amended out this section in their building code. Reed A. Roisum, SET | Karges-Faulconbridge, Inc. | Senior Fire Protection Designer | Fargo, ND | direct: 701.552.9903 | mobile: 701.388.1352 | KFIengineers.com<http://www.kfiengineers.com> -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of MFP Design, LLC Sent: Thursday, March 15, 2018 2:24 PM To: [email protected] Subject: stages I need to confirm something before I go over the deep end. Well, maybe I already have. With regard to the hose valves at the side of a true stage, are these to be treated as a standpipe where you need 250 gpm @ 100 psi provided through the FDC and routed on a separate system? Or can you come off the overhead system and just add 50 gpm per hose valve for your inside hose requirements? 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