Have a design criteria question;
I am using Tyco LFII k4.9 sprinklers in a residential renovation for a 20-story highrise. Mostly light hazard, non-combustible building structure. The building does have commercial offices, but the floors being renovated are all completely residential. Based on a design density of 0.10 gpm/sqft, would I need to abide by the 1,500 sqft remote area size for Light Hazard from NFPA 13, or by the product data from Tyco stating the 4 most demanding sprinklers? This is falling under the 2013 Edition of NFPA 13, not NFPA 13R of course. Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
6 Comments
Alex
5/31/2022 07:08:47 am
Hi,
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Todd E Wyatt
5/31/2022 08:25:00 am
I recommend reviewing the applicable, adopted Building Code (e.g. 2021 IBC) as it pertains to automatic sprinkler systems (ASPS) in high-rise buildings (HRB).
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Patrick Drumm
5/31/2022 08:31:50 am
Another item that may be sometimes overlooked. Confirm that you are flowing the 4 heads according to Note C from Table A in the sprinkler's product data sheet.
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Jesse
5/31/2022 08:34:32 am
While the building does fall under full 13, NFPA 13 gives you latitude for a 4 sprinkler calc. in 2016 NFPA 13 11.3.1. However, because the full version of 13 still governs, you'll need to remember that the common areas such as lobby, corridors, etc still need to be calc'd Light Hazard.
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Eric R
5/31/2022 09:17:33 am
Everyone has things pretty much covered this morning, so I'll just add emphasis on a few things.
Reply
Christopher Anderson
6/2/2022 03:46:56 pm
I agree with the comments above and would also recommend that the scope section of 13R be reviewed. Those clauses clarify the building types where NFPA 13R is applicable.
Reply
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