So how were the size of the nail plates George used determined? 

Craig L. Prahl, CET   
Fire Protection Specialist
Mechanical Department
CH2MHILL
Lockwood Greene
1500 International Drive
PO Box 491, Spartanburg, SC  29304-0491
Direct - 864.599.4102
Fax - 864.599.8439
[email protected]
http://www.ch2m.com 


-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Chris Cahill
Sent: Friday, April 17, 2009 11:21 AM
To: [email protected]
Subject: RE: IMC, IPC and nail plates

Let's go back to George's original post.  I read something about the shape or 
size of the nail plate was not up to the liking of the inspector.  As far as I 
know there are no nail plate requirements that talk about size and shape in 13, 
13R or 13D.  Thus an AHJ might look else where for guidance.
It would be totally appropriate for an AHJ to use a code like the IMC or IPC if 
they have specific guidance on such matters.  

Let's say 13, 13R, 13D and the listing for plastic sprinkler pipe don't say how 
thick a nail plate must be but the IPC does.  AHJ is on solid legal ground to 
enforce the minimum thickness of the IPC.  

So George got some more specifics?  Then we can determine if it's something
not covered by our family.    

Chris Cahill, P.E.
Fire Protection Engineer
Sentry Fire Protection, Inc.
 
763-658-4483
763-658-4921 fax
 
Email: [email protected]
 
Mail: P.O. Box 69
        Waverly, MN 55390
 
Location: 4439 Hwy 12 SW
              Waverly, MN 55390

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of 
[email protected]
Sent: Friday, April 17, 2009 9:57 AM
To: [email protected]
Subject: RE: IMC, IPC and nail plates

Yeah but that makes sense since they are used in potable water systems and 
potable systems connected to sprinklers.  That is not unique to sprinklers 
specifically. 


Craig L. Prahl, CET   
Fire Protection Specialist
Mechanical Department
CH2MHILL
Lockwood Greene
1500 International Drive
PO Box 491, Spartanburg, SC  29304-0491
Direct - 864.599.4102
Fax - 864.599.8439
[email protected]
http://www.ch2m.com 


-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Todd Williams
Sent: Friday, April 17, 2009 10:48 AM
To: [email protected]
Subject: RE: IMC, IPC and nail plates

If I recall, the IPC has been used in the DCVA vs. RPZ debate....


At 10:19 AM 4/17/2009, you wrote:
>What's the difference in requirements between the IPC, IMC and what you 
>have to do for sprinklers?
>
>Can't see how he could stretch those codes to cover sprinklers since 
>they are obviously controlled via IFC and NFPA.  I'd say he's grasping 
>for straws.
>
>But it would seem that the requirement for a potable water line would 
>be no greater than for a sprinkler line, right?
>
>
>Craig L. Prahl, CET
>Fire Protection Specialist
>Mechanical Department
>CH2MHILL
>Lockwood Greene
>1500 International Drive
>PO Box 491, Spartanburg, SC  29304-0491 Direct - 864.599.4102 Fax -
>864.599.8439 [email protected] http://www.ch2m.com
>
>
>-----Original Message-----
>From: [email protected]
>[mailto:[email protected]] On Behalf Of George
Church
>Sent: Friday, April 17, 2009 9:59 AM
>To: [email protected]
>Subject: IMC, IPC and nail plates
>
>Had an interesting encounter with an AHJ this week.
>He stopped by a jobsite where we're installing CPVC in walls, and found 
>fault with the nail plates we're using.
>I called to follow up on why he didn't like them, and asked for a code 
>reference. He replied even if it wasn't in the code, he'd enforce 
>nailplates extending further than ours as a safety issue. So I reminded 
>him that his authority was to enforce the PA UCC as adopted, not safety 
>issues he took a personal liking to.
>
>His code reference arrived by USPS this AM. He cited the IPC and IMC as 
>applicable to sprinkler piping, which I disagree with.
>
>Any thoughts or previous rulings by other AHJs?
>
>George Church
>Rowe Sprinkler
>
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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