Okay, not THAT'S the part of all this that's not congruent. Here is
the decision tree:
1. Is the building required to be seismically protected?
A. Yes - then you go through all the hoops.
B. No - STOP! You're done thinking about this issue.
For someone to say that you have a seismic joint that requires some
measure of address in a building where you're not otherwise seismically
securing the piping makes absolutely no sense and is outside the intent
of the building code. Read the installation instructions and NFPA 13
regarding the loop fittings: you are required to laterally brace the
piping on each side of the joint within 24" of the fitting. That's to
be sure that the piping on each side moves with the structural assembly
to which it's attached. If you don't do that, you're not doing it
right. But why would I be putting in sway bracing if it's not required?
Even if you install a seismic loop and brace it at the joint, an
earthquake would cause the piping to whip with such force that it would
likely rip the braces off anyway. Back to the decision tree - either
the building does or doesn't require seismic protection.
Now, nobody asked this question and I'm not a lawyer, but I did stay in
a Holiday Inn recently (not an Express): If the applicable code doesn't
require a building to be seismically protected, and the plans are
permitted per that code, and then someone (EOR, AHJ, a meddler) throws
down the requirement that you have to provide some measure of seismic
protection "just because", then I'm pulling out my Wheel Of Changer
Orders and dialing up a fat one ...
Just sayin',
SML
-----Original Message-----
From: Sprinklerforum
[mailto:[email protected]] On Behalf Of
Aaron Peck
Sent: Thursday, October 23, 2014 8:13 AM
To: [email protected]
Subject: Re: Expansion Joint vs. Seismic Expansion Joint
That's actually what I have. I went out and look at this expansion joint
and its a 4" gap.
They call it an expansion joint but want it seismically protected but
the project doesn't require seismic bracing. Hmmm...
Sent from my iPhone
Aaron M. Peck, SET Fire Protection
Skype +1(202)407-9079
Cambodia +855(0)78700407
> On Oct 23, 2014, at 6:08 PM, Fairchild, Jack
<[email protected]> wrote:
>
> We have buildings with expansion joints where up to 4 inches of
deflection can occur. I'm talking expansion, not seismic. For example,
this will occur where a steel structure (office building) meets a
concrete parking garage.
>
> Jack Fairchild
> _______________________________________________
> Sprinklerforum mailing list
> [email protected]
>
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