Hi, Great forum. My question is I have a business warehouse S-1. That is fully sprinklered. The owner put in walk in coolers and freezers years ago. I related that due to the fact he is fully sprinklered he would need to put in protection for all the walk in coolers and freezers.We use IFC 2015. What code can I reference? Thanks
From: Fpdcdesign [mailto:[email protected]] Sent: Tuesday, August 30, 2022 7:07 PM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] Re: NFPA 291 25% Drop Chris, I think part of it is practicality. There are some situations where to get a 25% drop, you are going to have to drain the water tower. Also, with water companies that are doing their own tests with a couple of field guys, they are not going to open a bunch of hydrants; one and done. Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080<tel:860-535-2080> (ofc) 860-554-7054<tel:860-554-7054> (fax) 860-608-4559<tel:860-608-4559> (cell) On Aug 30, 2022 at 5:21 PM, <Christopher Cahill<mailto:[email protected]>> wrote: Good day all, it’s been a while. I’m still here for you old timers. It appears the traditional 25% drop in residual pressure for satisfactory results has been modified to 10%, ’22 edition 4.4.6. I’ve looked in the committee reports and can’t find why. When I look in the enhanced content on Link it talks about 25% still. So now I’m wondering if it’s a typo. Anyone have an idea why this changed? The option to flow system demand appears modified as well in 4.4.7 When conducting a flow test for the purpose of fire protection system design, the flow and pressure results should be adequate for the total demand of the system. Like that’s practical for high demand systems, lol. Putting it together does it all mean for fire flow drop 10% and for system design we now HAVE to go to system demand? Chris Cahill, PE* \ Burns & McDonnell Sr. Associate Fire Protection Engineer Phone: 952.656.3652 [email protected]<mailto:[email protected]> *Registered in: MN [A close up of a sign Description automatically generated]<https://www.burnsmcd.com/insightsnews/industries/construction?utm_campaign=CORP_NationalConstruction&utm_source=OutlookSignatures_Web-InsightsNews-Industry-Construction> _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org To unsubscribe send an email to [email protected]<mailto:[email protected]>
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