Unless your state has amended IBC, it says what it says in 905.3.4.
-----Original Message-----
From: Sprinklerforum [mailto:[email protected]] On
Behalf Of Fpdcdesign
Sent: Thursday, March 15, 2018 1:09 PM
To: Sprinklerforum
Subject: Re: stages
I haven’t run into a situation where we have been allowed to tap off a
sprinkler system. All of then ones I have seen require a new feed from the
riser and a full standpipe calc.
Todd G Williams, PE
Fire Protection Design/Consulting
Stonington, CT
860-535-2080 (ofc)
860-553-3553 (fax)
860-608-4559 (cell)
>
> On Mar 15, 2018 at 3:57 PM, <Steve Leyton
> (mailto:[email protected])> wrote:
>
>
>
> 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?
>
>
>
>
>
>
>
>
>
> Travis Mack, SET
>
>
>
> MFP Design, LLC
>
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