I could be wrong, but I think your “common feed and only one meter” is the 
“common water connection” referred to in the code section. So, it would still 
be an additional 5 gpm that you would account for through that section, not an 
additional 40 gpm.

Kyle Montgomery
Aero Automatic Sprinkler Co.
[email protected]<mailto:[email protected]>



From: Anthony Johnson <[email protected]>
Sent: Wednesday, August 7, 2024 4:17 PM
To: Discussion list on issues relating to automatic fire sprinklers 
<[email protected]>
Subject: [External][Sprinklerforum] Re: 13D Townhomes (5pm per dwelling unit?)

That's a nice clarification in the '25 edition. Thank you very much Tom. So it 
sounds like if you have one connection for the whole townhome then 5gpm. 
Otherwise, in my case, bam bam bam x8 ..enjoy your 2" water meter. ;-)

Thanks,
AJ

On Wed, Aug 7, 2024 at 2:11 PM Tom Wellen 
<[email protected]<mailto:[email protected]>> wrote:
AJ,

NFPA 13D, 2025 Edition
A.6.5.2

The 5 gpm (20 L/min) provision is intended to be per connection and not per 
dwelling unit. A townhouse with more than two dwelling units fed by a common 
water connection would only require 5 gpm (20 L/min) to be added to size the 
common piping.



Does this answer your question?





Tom Wellen

[email protected]<mailto:[email protected]>





On Wed, Aug 7, 2024 at 1:39 PM Anthony Johnson 
<[email protected]<mailto:[email protected]>> wrote:
Good afternoon,
A quicky: 13D requires 5 gpm when there is  "more than one dwelling unit". I 
have about eight being a townhome - each getting their own system but a common 
feed and only one meter. Should I include 5 gpm for ea unit or just 5 gpm for 
the whole lot?

Thanks,
AJ


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