I respectfully disagree.  The most common application of a 3-hour separation 
that we see in the Southwest is the horizontal separation of the residential 
portion and the S/B occupancies in podium buildings.  In those instances we 
ALWAYS have a single system, whether it’s configured as separate sprinklers and 
standpipes or a combined system.


From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On 
Behalf Of AKS-Gmail-IMAP
Sent: Friday, February 02, 2018 8:22 AM
To: sprinklerforum@lists.firesprinkler.org
Subject: Re: 3-Hour Rated Walls

Sometimes a 3-hour rated wall is the boundary between two separate buildings in 
the code sense. If that is the case then the pipe should not be a sprinkler 
system protecting one building that is crossing over to protect all or part of 
the other building.

Allan Seidel
St. Louis, MO

On Feb 2, 2018, at 8:58 AM, Brian Harris 
<bhar...@bvssystemsinc.com<mailto:bhar...@bvssystemsinc.com>> wrote:

Is there anything that precludes passing pipe thru a 3-hour rated wall? I don’t 
see anything in 13 that says you can’t, we’d obviously fire calk the holes.

Brian Harris, CET
BVS Systems Inc.
Design Manager
Phone: 704.896.9989
Fax: 704.896.1935

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