Roland,
That's exactly what I thought and tried to explain to the South Carolina
State Fire Marshall's office. They insist the piping has to be 2 1/2" or
larger.
Matt
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| | Roland Huggins |
| | <[EMAIL PROTECTED]>|
| | Sent by: |
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| | prinkler.org |
| | 04/04/2007 12:32 PM |
| | Please respond to |
| | sprinklerforum |
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| Re: CPVC & Seismic Bracing
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the pipe size on the branch line is when a sway brace is REQUIRED for
the branch line. That criteria does NOT eliminate the requirement to
sway brace the main by use of an offset brace thus size is immaterial
(except for the brace being listed for the size of interest). If the
brace wasn't listed for 1 inch (which it is), then as the designer,
you'd need to size the starter piece to meet the needs of the brace.
Roland
On Apr 4, 2007, at 8:35 AM, [EMAIL PROTECTED] wrote:
> I know this was discussed recently but I don't think this specific
> point
> was brought up. Currently there is only one listed sway brace for
> CPVC and
> it is a lateral brace. Now in order to provide longitudinal bracing
> it was
> suggested to install a lateral brace on the branch line within 24
> in. of
> the main. However if you read 9.3.5.3.5 it states "...for lines
> that are 2
> 1/2" and greater in diameter". So what do you do for a 13R system
> with lets
> say 1 1/2" mains and 1" branch lines?
>
> Matt Drewello
>
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