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.

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On Wed, Oct 12, 2016 at 9:13 AM, Brian Harris <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
Subject: Re: FDC on 13R





Single or double?

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On Wed, Oct 12, 2016 at 8:07 AM, Brian Harris < bhar...@bvssystemsinc.com 
[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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