Thank you Roland. I hate going to the client and telling them they wasted good money on poor engineering. Lol. thank you’ll.
Steven MacKinnon Fire Protection Division Hartcorn Plumbing and Heating, Inc. 850 South Second Street Ronkonkoma, NY 11779 Office 631-580-2300 Fax – 631-580-1090 From: Sprinklerforum [mailto:[email protected]] On Behalf Of Roland Huggins Sent: Thursday, June 09, 2016 12:51 PM To: [email protected] Subject: Re: gridded pipe in a DIPA system look at section 7.3.2.6 (2013 ed but also older since not new criteria): occupancy hazard approach can be gridded for Single Interlock and Non - Interlock but not for Double - Interlock. For Storage no gridded systems for any type of preaction. Roland Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org<http://www.firesprinkler.org/> On Jun 8, 2016, at 10:43 AM, Steve Mackinnon <[email protected]<mailto:[email protected]>> wrote: Just came across a set of fire sprinkler plans for a freezer… The engineer wants to install a DIPA with gridded pipe, would this arrangement be allowed by NFPA 13, 2007 standards?? I know the good book says a DIPA system is considered a dry system for the 30% design area increase, but what about “gridding of pipe”? A DIPA system would only have supervisor air… wouldn’t this help the water reach the open sprinkler heads similar to a wet system? Thank you Steven _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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