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Room classification omission

SCBO1

SCBO1

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I'm reviewing a project that list several occupancies and one occupancy is listed in the code information as an S1. They show an S2 storage room in the S1 area but do not list this in the occupancy code information. I'm thinking the storage room was added after the orginal design was done but not sure.

Should it be listed with the other occupancies or is this commom for a small S2 storage room.

IMO, it should be listed.
 
A Group S-2 can be located within spaces classified as Group S-1 occupancies. It should be listed with the other occupancy groups present in the building.

It can be considered an accessory occupancy per Section 508.2, but it should be listed with the others and identified as an accessory occupancy. Thus, fire separation and allowable height and area are not affected by the accessory occupancy.

If the 2015 IBC is used, Section 311.1.1 allows storage occupancies of not more than 100 sq. ft. and are "accessory" to another occupancy to be classified as a part of that occupancy to which it is accessory (the 2018 IBC does not put an area limitation on these "accessory" storage spaces). However, what is not clear is can a small storage occupancy (e.g., S-2) use this provision when it is "accessory" to another storage occupancy (e.g., S-1)? If a storage space can be "accessory" to another storage space, then it should not be shown as a separate occupancy group (in the list or on the plans) but rather a part of the occupancy in which it is located. (I placed accessory in quotes in this paragraph to indicate that is the word used by the IBC, but it is not intended to be the same type of accessory occupancy described per Section 508.2.)
 
RLGA,
The storage is for holding confiscated contraband and is under the 100sf threshold. Building is sprinklered.
 
Sounds like a port of entry or TSA facility. Considering the types of items confiscated at these facilities (e.g., ammunition), I would seriously doubt this would be considered a "low-hazard storage" area. I would consider it part of the Group S-1 spaces.

Maybe that was the intent and they forgot to remove the "S-2" from the plans.
 
It appears the room needs a 1-hr wall seperation if sprinklered. Table 508.4 if I'm reading that table correctly.
 
Pcinspector1 said:
It appears the room needs a 1-hr wall seperation if sprinklered. Table 508.4 if I'm reading that table correctly.
Click to expand...
Only if allowable area and height are based on separated occupancies per Section 508.4 and it is classified as a Group S-2 (which I do not think it needs to be per my previous post).
 
Ron,

I beleive the architect has an arrow pointing to the closet but it is intended to be a larger area that should be listed as S1. Poorly done, this is why we have to review these plans and make comments. The area has a sallyport and staorage. The definition of a sallyport, is a secured vestibule with two or more doors. A motor vehicle repair garage is also allowed in the S1, so I think the S2 is a mistake pointing to the storage closet. So I think I got this puzzle figured out.
 
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