Many times we have done two submittals. One to the AHJ with all NFPA 
requirements and another to FM with their requirements. One example is the 
local AHJ may require a 10% reduction to the flow test and .2/1500 for OH2. FM 
does not mandate any reduction to the flow test but will require .2/2500 for 
HC2. The new FM data sheets have some rules that are contrary to NFPA but 
usually they are more restrictive.
Ron F

-----Original Message-----
From: Sprinklerforum [mailto:[email protected]] On 
Behalf Of John Denhardt
Sent: Thursday, February 12, 2015 6:28 AM
To: <[email protected]>
Subject: Re: NFPA 13 & FM Mix

But in some-storage cases you not comply with both with out using NFPA's 
equivalency approach. 

Sent from my iPhone

> On Feb 12, 2015, at 8:25 AM, "Cahill, Christopher" <[email protected]> 
> wrote:
> 
> You are most likely legally obligated to provide the minimums of NFPA 13.  
> You may sign a contract to provide more, but not less.  FM or silly PE 
> requirements might be examples.  
> 
> Chris Cahill, PE*
> Associate Fire Protection Engineer
> Burns & McDonnell
> Phone:  952.656.3652
> Fax:  952.229.2923
> [email protected]
> www.burnsmcd.com
> *Registered in: MN
> 
> 
> Proud to be #14 on FORTUNE's 2014 List of 100 Best Companies to Work 
> For
> 
> 
> -----Original Message-----
> From: Sprinklerforum 
> [mailto:[email protected]] On Behalf Of 
> Gregg Fontes
> Sent: Wednesday, February 11, 2015 6:03 PM
> To: [email protected]
> Subject: NFPA 13 & FM Mix
> 
> I have a quick question that I need a fast answer to.  Where is it in NFPA 13 
> 2013 Edition that you cannot mix the two design standards?   (I.E. you either 
> design per NFPA 13 or FM Global. You cannot pick and choose.)
> 
> Thanks,
> Gregg Fontes
> Cen-Cal Fire Systems, Inc.
> 209-334-9119
> 
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