I’ve seen this before. The premise is that if the ceiling system is impaired, the rack system in the same zone, being connected to a different source could still function.
This one a wide open building so if you rolled up on it, there wouldn’t be an issue figuring out where the fire was. Craig L. Prahl Fire Protection Group Lead/SME CH2M 200 Verdae Blvd. Greenville, SC 29607 Direct - 864.920.7540 Fax - 864.920.7129 CH2MHILL Extension 77540 [email protected] From: Sprinklerforum [mailto:[email protected]] On Behalf Of Bruce Verhei Sent: Wednesday, October 12, 2016 6:17 PM To: [email protected] Subject: Re: In-Rack Sprinkler Control Valve [EXTERNAL] I thought the reason this was commonly done was driven by friction loss. As far as zoning alarm local jurisdictions commonly tinker with this area of model codes during adoption, and during adopting rulings. Sprinkler folks who think AHJ's do to much localizing would be shocked with what is common practice in the alarm world. Does the local AHJ require point identification of the alarm? And does that extend to on site annunciation? If so, I'd accept S. Ceiling and N. In-Rack Sprinklers as one point, and N. Ceiling Sprinklers as another. Best Bruce Verhei On Oct 12, 2016, at 14:47, James Crawford <[email protected]<mailto:[email protected]>> wrote: The building is 70,000 sq ft and a multi-tenant building Thank you James Crawford Phaser Fire Protection Ltd. Phone 604-888-0318 Fax 604-888-4732 Cel 604-790-0938 Email [email protected]<mailto:[email protected]> From: Sprinklerforum [mailto:[email protected]] On Behalf Of rongreenman . Sent: Wednesday, October 12, 2016 2:19 PM To: [email protected]<mailto:[email protected]> Subject: Re: In-Rack Sprinkler Control Valve Why is it zoned? Just because it's bigger than 52K? One big open space? Not trying to be a smart ass (or maybe I am) but the FD won't fight a fire in zone 2 that is happening in Zone 1 bec aide an annunciation says here, not there, and it sounds like they'd be able too see the fire on entry. On Wednesday, October 12, 2016, James Crawford <[email protected]<mailto:[email protected]>> wrote: I just came from a building where the in-rack sprinklers are connected into the adjacent roof system. The building has two roof zones, north and south, the in-racks are in the north zone but connected into the south zone (no control valve at the connection point) I have never ever thought of doing this as it would send two different signals in the event of a fire, but cannot seem to find anything that says you can’t do this, with the exception of alarm signals. Any comments on this arrangement? Thank you James Crawford Phaser Fire Protection Ltd. Phone 604-888-0318 Fax 604-888-4732 Cel 604-790-0938 Email [email protected]<javascript:_e(%7B%7D,'cvml','[email protected]');> -- Sent from Gmail Mobile _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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