Matt,
Did you go through the miscellaneous storage section in Chapter 12?
Depending on your tire storage height and configuration, you might be
able to use OH2. Otherwise it's an EH1 and you could use K17's and use
your 6 sprinkler calc. Keep in mind that you will need to apply 23.4.4.2.5.
/Thank you,
Bob Knight, CET III//
/*/Fire by Knight, LLC/*/
//208-318-3057/
FIREBYKNIGHT
On 2/8/2024 9:54 AM, Matt Grise wrote:
We are looking at an auto repair facility that has a very small tire
storage room (apx 300sf). The tire storage space is open on one side
to the misc parts storage area (short-shelf OH2). Our thought was to
protect the tire storage space with a small ESFR system that extends
15' into the misc parts storage area. The other 3 sides of the tire
storage room are CMU and extend to the deck.
Even with the 15' extension into the lesser hazard area, there are
only 6 ESFR sprinklers needed. (2 heads on 3 lines) = 540sf.
Based on the annex commentary in NFPA 13 2016 A11.1.2, our plan was to
calc the 6 esfr heads (the full higher-hazard area plus 15' = 540sf)
along with 960sf at .2gpm/sf to round out the larger of the two
operating areas.
We received some pushback because there is no ESFR design criteria
that only uses 6 heads, so the plan reviewer was concerned that we
were not following the 12-head design for an ESFR system.
There was a suggestion that we should pretend there were 12 heads and
calc a 12 head area (even though 6 would never be installed).I figured
that since we were calculating ALL of the ESFR heads in the building,
that would be ok.
Has anyone seen anything like this before? Any thoughts?
Thanks!
Matt Grise
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