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:sprinklerforum-boun...@lists.firesprinkler.org] On 
Behalf Of Brian Harris
Sent: Wednesday, October 12, 2016 7:11 AM
To: sprinklerforum@lists.firesprinkler.org
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:sprinklerforum-boun...@lists.firesprinkler.org] On 
Behalf Of Todd Williams
Sent: Wednesday, October 12, 2016 10:09 AM
To: 
sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org>
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 
<bhar...@bvssystemsinc.com<mailto:bhar...@bvssystemsinc.com>> wrote:
Double (Siamese)


Brian Harris, CET
BVS Systems Inc.
bvssytemsinc.com<http://bvssystemsinc.com/>

From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On 
Behalf Of Todd Williams
Sent: Wednesday, October 12, 2016 9:11 AM
To: 
sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org>
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 
<bhar...@bvssystemsinc.com<mailto:bhar...@bvssystemsinc.com>> 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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