Folks-
Just a general question regarding CPVC.
As a specifier, I normally make no distinctions regarding the
manufacturer or brand name for piping or fittings. I simply state the
material and relevant/applicable ASTM standards etc. After all, I want
my clients to get the best pricing and open specs tend to do that.
Obviously I make exceptions to that if I have a good reason (hydraulic
performance, specific feature needed/wanted, similarity with an owners
other systems etc.)
Which brings me to my question...Is there any need to be more specific
about CPVC products? I have always held the belief that CPVC is CPVC.
Provided that supplier of pipe and/or fittings maintains a UL listing
(or other listing) for their products for fire protection use, then the
parts are essentially interchangeable. Am I wrong?
I know that Blazemaster in their literature will generally steer you
toward product mfg/suppliers that use their resin and assume the others
do the same. But I have always seen this as being the equivalent of GM
wanting me to use Genuine GM parts.
Does anyone have any hard factual data to the contrary such as technical
bulletins etc.
Thanks
Paul Sincaglia
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Chris
Brown
Sent: Wednesday, April 04, 2007 1:43 PM
To: [EMAIL PROTECTED]
Subject: RE: CPVC & Seismic Bracing
Maybe this will help
To register click on this link https://www.krm.com/clse
Topic: New Seismic Requirements with NFPA and IBC The topic of seismic
design has become well known to many over the past five years. And like
many, your learning experience has most likely come with a cost. The
new editions of NFPA and IBC have arrived and offer a much more
understandable process for those of us involved with fire protection
systems to apply. This seminar has been organized with condensed
step-by-step information that leads from the "when" through to the
"how". Whether you have wrestled with this before or you have not yet
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jurisdiction. You do not want to miss this.
Thank you,
Chris Brown
Fire Protection Designer, Poole Fire Protection
Office: 913.829.8650 Direct: 913.747.2056 Cell: 913.208.3600 Fax:
913.829.8690
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Wednesday, April 04, 2007 12:09 PM
To: [EMAIL PROTECTED]
Subject: Re: CPVC & Seismic Bracing
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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| | 04/04/2007 12:32 PM |
| | Please respond to |
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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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