I would like to differentiate between the density requirements for low piled and miscellaneous storage using NFPA 13-2019 Edition.
I have reviewed the the definition and literature in the code. That is all completely understandable. Does miscellaneous storage meet or excteed the requirements for low-piled storage? Based on the commodity, total storage area, total storage percentage, pile size dimensions, and storage spacing requirements - does all this factored in mean that the design density for the non-storage areas (like manufacturing or assembly) can be used under the miscellaneous storage area, instead of the densities provided in NFPA 13 Table 4.3.1.7.1? For Table 4.3.1.7.1 - there is no mention of low piled storage in the title of the table - is this the table that would be used for the determining the densities for any low-piled storage areas? Is there not a separate table for low-piled storage? I am likely overthinking things but some clarification or opinions would be appreciated. Thanks in advance for the help. Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
12 Comments
Pete H
1/21/2022 06:59:10 am
Not 100% the same. But they work out the same in most practice. From NFPA 13 (2013)
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Pete H
1/21/2022 06:59:49 am
Er. 2019 edition. Not 2013.My bad on that.
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Pete H
1/21/2022 07:06:22 am
The other fun thing to notice is that when you do meet those ever elusive requirements to be misc. storage and not low-piled storage, you aren't directed to use in-rack sprinklers on solid shelves as per 25.6.1 (but still might want to if you meet the +1 level of in-rack sprinkler note found in Table 4.3.1.7.1, in which case refer to 25.2.2.1 for design criteria.)
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ML
12/8/2023 06:47:15 pm
Pete if our storage is classified as Misc Storage do we not have to have in rack sprinklers on solid shelves?
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Jesse
1/21/2022 08:25:11 am
Not 100% quite the same thing, but for the purposes of this, yes.
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Franck
1/21/2022 08:40:15 am
The main purpose is to be sure that if you are below the requirement of height for pile storage in the storage section chapter, you don't define a density that would be lower than for misc. storage.
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Franck
1/21/2022 08:42:01 am
The main difference with low pile storage and "normal" storage would be the selection of sprinklers (temperature rating) and installation of sprinklers (spacing, coverage area / sprinkler...), as you can follow the rules for OH Gr 2 and not the one for storage.
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Jay
1/21/2022 09:31:10 am
The table you're referring to is only applicable to storage that meets the definition of miscellaneous storage.
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Todd B
1/21/2022 12:49:44 pm
Thank you everyone for your comments and help
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Pete D
1/22/2022 10:20:40 pm
Be warned. In the definition chapter, 3, there is a definition of miscellaneous storage and another definition of miscellaneous tire storage, and they're different.
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Todd Wyatt
1/24/2022 08:47:23 am
The 2021 IBC (the scoping Code for automatic sprinkler systems) references the 2021 IFC regarding "high-piled stock or rack storage" per 413.1 General.(https://codes.iccsafe.org/content/IBC2021P1/chapter-4-special-detailed-requirements-based-on-occupancy-and-use#IBC2021P1_Ch04_Sec413.1)
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OSMAN OMRAN OSMAN
7/23/2023 03:52:04 pm
I am thinking that there are a contradiction between:
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