Richard,
If my memory is accurate of the issues raised in the discussion that
ambiguity was a part of the differing viewpoints.
Some argued that 10 psi was not workable in their locale as their
pressures were so limited that an imposition of 10 psi was simply to
drastic and would result in much larger pipe sizes as a result.
Others argued that 10 psi was not enough, and in their area 10 psi
didn't equal 10%, and there was some reluctance to base their designs on
a pressure greater than 90% of the available.
It was quite a discussion.
*Ken Wagoner, SET
*Parsley Consulting***
*350 West 9th Avenue, Suite 206
*Escondido, California 92025
*****Phone 760-745-6181*
Visit the website <http://www.parsleyconsulting.com/> ***
On 06/15/2018 10:23 AM, Richard Carr wrote:
Even though it is not in NFPA most AHJ’s require some sort of safety
margin, 10%, 10 psi which we have had to provide for a long time so
most designers know to leave safety margin in the calc’s. it would be
nice if they all used the same amount.
Richard M. Carr, SET
Project Manager/Design
Diboco Fire Sprinklers, Inc.
325 Jackson Loop Road
Flat Rock, NC 28731
[email protected] <mailto:[email protected]>
828-696-3400
828-696-2288 Fax
828-708-9118 Mobile
cid:[email protected]
cid:[email protected]
*From:*Sprinklerforum <[email protected]>
*On Behalf Of *Parsley Consulting
*Sent:* Friday, June 15, 2018 1:22 PM
*To:* [email protected]
*Subject:* Safety Margin
Scott,
Based on the material which was presented to the -24 and -291
committee meetings I believed the proposed safety margin and the means
to calculate that margin there was some merit in the proposal.
For reasons I don't quite remember the PI was voted down at the 2nd
draft meeting. I listened to some of the discussion, and there were
some good points made. I'm not terribly surprised it failed at the
convention level. Perhaps the attendees were following the lead of the
technical committees, and declining to overrule their decision.
sincerely,
*Ken Wagoner, SET
**Parsley Consulting**
350 West 9th Avenue, Suite 206
Escondido, California 92025
**Phone 760-745-6181
**Visit the website <http://www.parsleyconsulting.com/> *
On 06/15/2018 8:09 AM, Scott Futrell wrote:
Only that the 'safety margin' inclusion in the 2019 edition of NFPA 13
failed, so it won't be included or required.
I consider this unfortunate, but I'd guess that not everyone on the forum
would agree.
Scott
Office: (763) 425-1001 x2
Cell: (612) 759-5556
-----Original Message-----
From: Sprinklerforum [mailto:[email protected]] On
Behalf [email protected] <mailto:[email protected]>
Sent: Thursday, June 14, 2018 5:46 PM
To:[email protected]
<mailto:[email protected]>
Subject: NFPA Vegas Convention
I didn't make it again this year.
"Caputo" is the only speaker name I recognized.
Anybody have any earthshaking epiphanies?
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