This is unfortunately an all too common mistake.
Section 9.3.5.5.10 allow the omission of lateral sway bracing on mains
supported by hanger rods whose length is less than 6", measured from the
top of the pipe to the point of attachment to the structure. This has
been a part of NFPA 13 for quite some time.
There is no such allowance for omission of longitudinal bracing in NFPA 13.
Unfortunately I believe the AHJ is in error.
This represents my personal opinion as a member of the hanging and
bracing committee of NFPA 13, and does not imply the official position
of the NFPA, which is contained in the body of the document.
*Ken Wagoner, SET
*Parsley Consulting***
*350 West 9th Avenue, Suite 206
*Escondido, CA 92025-5053
*****Phone 760.745.6181*
Visit our website <http://www.parsleyconsulting.com/> ***
On 7/22/2014 11:52 AM, [email protected] wrote:
I'm a 13D guy but I have a 13 question. What bracing is required if the hangers are
6" or less in lenght? An AHJ said bracing would only be required at the riser.
No lateral or longitude required. Is that true? I'm looking in chapter 9 but don't
see it.
Sent from my iPhone
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