I agree, I’m just trying to find where it was allowed in earlier editions.



[cid:[email protected]]

From: Sprinklerforum [mailto:[email protected]] On 
Behalf Of Travis Mack
Sent: Friday, January 27, 2017 1:59 PM
To: [email protected]
Subject: Re: Tank Capacity

You are just using a "break tank" when you have automatic refill.

If your demand is 1000 gpm for 60 min and your city supply can do 500 gpm, then 
you just store 500 gpm for 60 min.

I'm out on the road so I can't look up the exact reference. But the good thing 
is you don't need crazy formulae with a hundred exponents to figure this out. 
It's just simple math.

Travis Mack, SET
MFP Design, LLC
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Sent from my iPhone

On Jan 27, 2017, at 12:52 PM, Dale Wingard 
<[email protected]<mailto:[email protected]>> wrote:
NFPA 22 (2013 Edition) excerpt-

4.1.4 A tank shall be sized so that the stored supply plus reliable automatic 
refill shall be sufficient to meet the demand placed upon it for the design 
duration.

I have researched earlier editions but I have not been able to find where the 
reliable automatic refill has been previously allowed; however, I recall this 
being the case.  Am I overlooking something?

Thanks,


<image001.jpg>

<Dale Wingard SET.vcf>
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