Don't feel bad. I still remember the time that I had an NFPA
interpretation to back me up on a problem with an AHJ. He told me that
the opinion of the technical committee members do not carry any more
weight than his own. And that they were wrong. That whole thing led to
a jurisdiction requiring all combination standpipes to be 6" minimum,
regardless if calculated to be 4" or not.
Travis Mack, SET
MFP Design, LLC
2508 E Lodgepole Drive
Gilbert, AZ 85298
480-505-9271
fax: 866-430-6107
email:[email protected]
http://www.mfpdesign.com
https://www.facebook.com/pages/MFP-Design-LLC/92218417692
Send large files to us via: https://www.hightail.com/u/MFPDesign
LinkedIn: https://www.linkedin.com/in/travismack
On 4/8/2017 2:43 AM, John Paulsen wrote:
Thanks John,
Normally that would be the approach I would take, but I despair of any
hope in being able to educate this particular individual. I’ve tried
twice with no success. Sometimes it helps to know I’m not the one
who’s nuts! It’s getting harder and harder to tell these days.
John P
Crown FSD
*From:*Sprinklerforum
[mailto:[email protected]] *On Behalf Of *321
*Sent:* Saturday, April 8, 2017 5:39 AM
*To:* [email protected]
*Subject:* Re: Sprinklers over low partitions
John,
Unfortunately....you are dealing with an AHJ that is subjectively
making a decision based on his personal ideas relative to Fire
Sprinkler spacing and operation. Further...he doesn't realize that the
low partitions have no effect upon the Fire Sprinkler operation or
discharge characteristics.
Your challenge is to educate this person as to the fact that the NFPA
Technical Committee takes all factors into account in developing the
codes. I would suggest using some of the data from NFPA 13 on
obstructions to educate this person as to how the discharge cone
develops and that there is no more likelihood of a fire developing in
the center of a space than there is along one of these low partitions.
Good luck!
*John W. Farabee*
*VP Fire Sprinkler Division*
*Atlantic Realty and Building, LLC*
*Jupiter, Fl*
*561-707-5150*
*Florida License No.*
*FPC16-000106*
On Saturday, April 8, 2017 5:14 AM, John Paulsen <[email protected]
<mailto:[email protected]>> wrote:
We are in the final phases of designing a self-storage facility (Ord
Haz, Grp II) that has upright, quick response sprinklers with the
deflectors at least 18” above the top of the individual storage unit
partitions. In some cases where the units are 5’x5’ or 5’x10’ we have
located the sprinklers directly over the top of the low partition. Our
design concept is that the sprinkler will throw evenly to each side of
the partition and cover the space on either side. This prevents us
from have to “stagger” the sprinklers with arm-overs to prevent
spacing closer than 6’ apart. We have also provided the manufacturer’s
sprinkler spray pattern information to support our design concept.
Now the local plan reviewer is telling us that he will not accept this
sprinkler arrangement and that each unit has to have sprinkler(s) over
them. This is the second project that we have done in this
jurisdiction and we ran into a similar issue with the first one that
we solved with the sprinkler over the partition arrangement. Now he
will not accept this solution, but he doesn’t site any code or
handbook reference that we are violating. Is our design concept
contrary to the provisions of NFPA-13? A review of NFPA-13 only
specifically deals with sprinkler spacing over low partitions in light
hazard occupancies, not OH II, so I have no code guidance.
Comments would be greatly appreciated.
John Paulsen – SET
Crown Fire System Design
6282 Seeds Rd.
Grove City, OH 43123
P – 614-782-2438
F – 614-782-2374
C – 614-348-8206
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