Not to put too fine a point on your comment, Brad, however the section
you're quoting has been present in -13 allowing lateral and longitudinal
braces to serve as the longitudinal and lateral braces if located not
more than 24" from the end of the change in direction at least since the
'99 edition, which is as far back as I have electronic copies. A change
was made in the '16 that the pipe where the brace is connected must be
of an equal or larger size than the opposite line.
*Ken Wagoner, SET
*Parsley Consulting***
*350 West 9th Avenue, Suite 206
*Escondido, California 92025
*****Phone 760-745-6181*
Visit our website <http://www.parsleyconsulting.com/> ***
On 08/03/2017 9:52 AM, [email protected] wrote:
Well I finally read the book and now I have to correct myself-----
from 13-2016:
9.3.5.5.8 Lateral braces shall be allowed to act as longitudinal
braces if they are within 24 in. (600 mm) of the centerline of the
piping braced longitudinally and the lateral brace is on a pipe of
equal or greater size than the pipe being braced longitudinally.
(thanks for making me want to look Basil)
Brad
Quoting [email protected]:
"(as much as 4 feet away)?"
If you could get the main with-in 2 feet of the nearest joist you
could stub out a 1x2-0 with a cap and put a lateral brace on it, or
do that to a branch line if available. (See the fairly recent thread
on Longitudinal Braces for CPVC Mains).
Hopefully Ken will comment on the, "Is it OK to kick the longitudinal
brace at an angle ..." thing.
Brad
Quoting "Kyle.Montgomery" <[email protected]>:
What do you guys do for longitudinal bracing of mains when the main
is trapezed between two structural members? This is in a warehouse
with the bar joist structure with wood nailers and a plywood deck,
so just attaching to the deck isn't an option.
Is it OK to kick the longitudinal brace at an angle to the nearest
bar joist (as much as 4 feet away)? Technically, if you use a
longitudinal pipe attachment (such as Tolco Fig. 4L), the brace is
still acting "parallel to the axis of the system piping", but if you
look at it in plan view it will look like a combination between a
lateral and a longitudinal. And it will definitely impart some
lateral force on the pipe.
We also considered running angle iron from joist to joist (attached
to top chords) and attaching the longitudinal brace to that. But
what size angle iron would we use?
I'm sure that a structural engineer could design several viable
options, but I'm looking for something that is listed/prescriptive.
I'm also interested in hearing what you've seen/done that might not
be a listed method, just for ideas.
Thanks in advance for your help.
Kyle Montgomery
[cid:[email protected]]
Aero Automatic Sprinkler Co.
21605 N. Central Ave.
Phoenix, AZ 85024
Direct: 623.580.7820
Cell: 602.763.4736
[email protected]<mailto:[email protected]>
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