safety that last longer than
twenty to twenty-five years.
Scott
From: tston...@comcast.net
Sent: Wednesday, November 23, 2022 8:20 AM
To: 'Discussion list on issues relating to automatic fire sprinklers'
Subject: [Sprinklerforum] Re: Steel pipe failure rates
Todd,
I will check with NFPA
lor Schumacher
Sent: Wednesday, November 23, 2022 9:27 AM
To: Discussion list on issues relating to automatic fire sprinklers
Subject: [Sprinklerforum] Re: Steel pipe failure rates
I would like to chime in on this thought because this fact is often overlooked
when the great debate of pipe wall
frame buildings.
Taylor Schumacher, ET
From: tston...@comcast.net
Sent: Wednesday, November 23, 2022 8:20 AM
To: 'Discussion list on issues relating to automatic fire sprinklers'
Subject: [Sprinklerforum] Re: Steel pipe failure rates
Todd,
I will check with NFPA.
Given the Choice would
d. - Essex Jct., VT. 05452
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> From: Fpdcdesign
Fpdcdesign
Sent: Wednesday, November 23, 2022 8:29 AM
To: Discussion list on issues relating to automatic fire sprinklers
Subject: [Sprinklerforum] Re: Steel pipe failure rates
Tim,
You would probably have to reach out to NFPA and/or trade associations for
statistics. Suffice
- Essex Jct., VT. 05452
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> From: Steve Leyton
2 1:47 PM
To: Discussion list on issues relating to automatic fire sprinklers
Subject: [Sprinklerforum] Re: Steel pipe failure rates
We’ve seen our first pieces of Sch. 10 fail from MIC recently, but that’s a
different ballgame and NONE of the parent steel alloys factor that in their CRR
r
CA 92108
Fire Protection System Design | Consulting | Planning | Training
From: tston...@comcast.net
Sent: Tuesday, November 22, 2022 10:14 AM
To: 'Discussion list on issues relating to automatic fire sprinklers'
Subject: [Sprinklerforum] Re: Steel pipe failure rates
Only that the owner
ubject: [Sprinklerforum] Re: Steel pipe failure rates
Did the specifying engineer state why he/she wants only Sch 40?
On Nov 22, 2022 at 12:14 PM, mailto:sbi...@wenteplumbing.com> >
wrote:
I always use the Corrosion Resistance Ratio (CRR) argument. Basically, the
thickness of schedu
For information purposes only, I have done many projects whose
specifications require schedule 40 black steel pipe for all systems.
Threaded or grooved ends are allowed. For dry pipe or preaction systems,
roll grooves are not allowed; only cut grooves.
I have great success with this approach.
Did the specifying engineer state why he/she wants only Sch 40?
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> On Nov 22, 2022 at 12:14 PM, (mailto:sbi...@wenteplumbing.com)> wrote:
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> I always use the Corrosion Resistance Ratio (CRR) argument.Basically, the
> thickness of
I always use the Corrosion Resistance Ratio (CRR) argument. Basically, the
thickness of schedule 10 piping is greater than or equal to the thickness
of the first exposed thread of threaded schedule 40. Using this argument,
schedule 10 should theoretically last at least as long as threaded
Go to the engineered corrosion solutions page, they have several studies on
corrosion of pipe, much better to install a nitrogen system with sch 10
then to install sch 40 pipe. The biggest problem with sch 40 is that it
still corrodes but instead of failing the pipe just ends up full of
corrosion
The only info that comes to mind is the comparison of thicknesses. If they are
the same material, same coating, same environment - as I understand it, the
rate of corrosion is linear through the 'meat' of the pipe. I believe that is
the basis for the corrosion resistance ratio concept. The old
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