Thomas,
Figure A.9.1.1 in the '10 edition of -13 clearly shows a "split ring"
hanger as a type of an "acceptable hanger", so my first thought is that
if the rings themselves were listed, as they were required to be, you
met the criteria established by the standard.
A quick look at two manufacturers catalog data showed neither had a
listed split ring.
Just my thoughts.
--
PARSLEY CONSULTING
Ken Wagoner, SET
760.745.6181 voice
760.745.0537 fax
[email protected] <mailto:[email protected]> e-mail
www.ParsleyConsulting.com <http://www.ParsleyConsulting.com> website
IMPORTANT NOTICE: This correspondence is not a Formal Interpretation
issued pursuant to NFPA Regulations. Any opinion expressed is the
personal opinion of the author and does not necessarily represent the
official position of the NFPA or its Technical Committees. In addition,
this correspondence is neither intended, nor should it be relied upon,
to provide professional consultation or services.
10/12/2010 6:30 AM, Thomas Watt wrote:
I was driving down the highway the other day when I passed a job I did
about 4 or 5 years ago, a dry system (4"main w/2" branch lines) over a
covered play area outside an elementary school. I had some reservations at
the time but was told to follow the plan with the materials provided. What I
was concerned with at the time was installing Sammy screws vertically into
boxed steel beams with no way to reach a back nut to install it. I had to
drill pilot holes and oil the threads to help keep the Sammys from breaking
off.
The other problem I did not realize at the time but have become aware of
through my parasitic leaching from this remakably informative discussion
group. Other than the 4" rings on the main, all of the hangers are the
split-ring type. I remember reading here that they do not meet the
requirements of NFPA 13 for hanging pipe.
Call me paranoid but I think that this system could fall given the right
set of circumstances. Remember, this system hangs above small children at
play. Am I obligated to inform the AHJ or some other entity?
Thomas Watt
A parasite/fitter/foreman (laid-off again)
Orlando, Florida
_______________________________________________
Sprinklerforum mailing list
[email protected]
http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
For Technical Assistance, send an email to: [email protected]
To Unsubscribe, send an email to:[email protected]
(Put the word unsubscribe in the subject field)
_______________________________________________
Sprinklerforum mailing list
[email protected]
http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
For Technical Assistance, send an email to: [email protected]
To Unsubscribe, send an email to:[email protected]
(Put the word unsubscribe in the subject field)
