Okay … warning to all y’all: I’ve only had one coffee and not entirely lucid yet so the following analogy may seem far-fetched. You know how when we were young and thought our parents thought and said crazy stuff? But as we get older we starting thinking and saying the EXACT SAME STUFF? Well, let’s think of industry as the kids and our AHJ’s as the parents – I find myself thinking like an AHJ all the time now. So a two way FDC is overkill? Hydraulically it may well be but are we quite sure that the property management company or HOA is going to diligently inspect and maintain the FDC inlet? Bugs, birds, plants, little kids stuffing things into it and what-not?? No, we’re not sure which is one of the principal reasons why having multiple inlets on ANY connection is a good idea, in case one is damaged or encumbered.
The wet-pipe committees undertook an FDC task group between cycles to determine how much water can actually be pumped into multiple 2½” inlets. Coming out of that, we’re working mod’s to the prescription for how many inlets should be installed based on demand. Stay tuned for more and try to see the bigger picture. Steve L. From: Sprinklerforum [mailto:[email protected]] On Behalf Of Brian Harris Sent: Wednesday, October 12, 2016 7:11 AM To: [email protected] Subject: RE: FDC on 13R Overkill is exactly what I was thinking too. AHJ won’t budge so Siamese it is…… Brian Harris, CET BVS Systems Inc. bvssytemsinc.com<http://bvssystemsinc.com/> From: Sprinklerforum [mailto:[email protected]] On Behalf Of Todd Williams Sent: Wednesday, October 12, 2016 10:09 AM To: [email protected]<mailto:[email protected]> Subject: RE: FDC on 13R [https://tr.cloudmagic.com/h/v6/emailtag/tag/1476281335/01c6e4fe7e8b46e8dfef813adf427213/ecdd64c309bb34b23eb65c654267bfff/cbb23e6e64096b6f2f8182997aff97c4/9efab2399c7c560b34de477b9aa0a465/ufo.gif] I have had to do this on some 13R group homes. The AHJ wouldn't accept a single 2-1/2. Seems like overkill. Two 2-1/2" connections fed from a 1500 gpm pump for a 55 gpm demand. We ran 4" to the riser room and connected with a 4 x 1-1/4 welded outlet. via Newton Mail<https://cloudmagic.com/k/d/mailapp?ct=pi&cv=9.1.21&pv=10.0.2&source=email_footer_2> On Wed, Oct 12, 2016 at 9:13 AM, Brian Harris <[email protected]<mailto:[email protected]>> wrote: Double (Siamese) Brian Harris, CET BVS Systems Inc. bvssytemsinc.com<http://bvssystemsinc.com/> From: Sprinklerforum [mailto:[email protected]] On Behalf Of Todd Williams Sent: Wednesday, October 12, 2016 9:11 AM To: [email protected]<mailto:[email protected]> Subject: Re: FDC on 13R [https://tr.cloudmagic.com/h/v6/emailtag/tag/1476277888/01c6e4fe7e8b46e8dfef813adf427213/ecdd64c309bb34b23eb65c654267bfff/baa43dc780325ba131c97b912a7e0d62/9efab2399c7c560b34de477b9aa0a465/ufo.gif] Single or double? via Newton Mail<https://cloudmagic.com/k/d/mailapp?ct=pi&cv=9.1.21&pv=10.0.2&source=email_footer_2> On Wed, Oct 12, 2016 at 8:07 AM, Brian Harris <[email protected]<mailto:[email protected]>> wrote: Looking for opinions. AHJ wants to swap out a single 1-1/2” FDC on a 13R system and replace it with a standard 2-way (2-1/2”) FDC. Thoughts, concerns, suggestions, etc….. Brian Harris, CET BVS Systems Inc. Design Manager bvssystemsinc.com<http://bvssystemsinc.com/> Phone: 704.896.9989 Fax: 704.896.1935
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