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Incidental Occupancy and Fire Rated Walls
February 26, 2018
8:00 am
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pmiller@co.worcester.md.us
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508.2 Accessory occupancies: Ancillary to the main occupancy of the building.

508.2.4 Separation of occupancies: No separation is required between accessory occupancies and the main occupancy.

Or Table 508.4, choice of the design professional.

February 25, 2018
3:54 pm
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npe1082@gmail.com
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pmiller@co.worcester.md.us said
Are we discussing industrial equipment or typical equipment one would have in a restaurant kitchen with an occupant load of less than 100 (walk-in boxes)?

If industrial equipment I would agree with your assessment of refrigeration room and separation per Table 509.

Thanks for your reply! Commercial restaurant with kitchen. My assessment is the kitchen is an accessory space, and the storage would be incidental.

 

Per Table 508.4, occupancy groups A and S1 (or S2) require a fire rating, assuming non-sprinklered. Therefore, since a fire separation is required, I assume the storage is an incidental space? And the kitchen is accessory?

February 22, 2018
7:42 am
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pmiller@co.worcester.md.us
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Are we discussing industrial equipment or typical equipment one would have in a restaurant kitchen with an occupant load of less than 100 (walk-in boxes)?

If industrial equipment I would agree with your assessment of refrigeration room and separation per Table 509.

January 30, 2018
6:49 pm
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npe1082@gmail.com
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Thanks for your reply, pmiller. However, accessory occupancy is different from incidental occupancy, and I am specifically referring to incidental occupancy.

pmiller@co.worcester.md.us said
508.2 Accessory occupancies: Ancillary to the main occupancy of the building.

508.2.4 Separation of occupancies: No separation is required between accessory occupancies and the main occupancy.

January 30, 2018
11:46 am
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pmiller@co.worcester.md.us
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508.2 Accessory occupancies: Ancillary to the main occupancy of the building.

508.2.4 Separation of occupancies: No separation is required between accessory occupancies and the main occupancy.

January 28, 2018
11:20 am
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npe1082@gmail.com
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I have two questions, which pertain to IBC 2012.

Given a restaurant project with small kitchen and storage spaces attached, a) where would one require a fire-rated wall? Would it be between the restaurant and kitchen? Or between the kitchen and restaurant? From my understanding, both kitchen and restaurant are A-2 occupancies. Low hazard storage is S-2. Per Table 508.4, Required Separation of Occupancies, A-2 and S-2 require a 1 hour rating if non-sprinklered.

 

b) Which is the incidental occupancy? I believe it is the kitchen per Table 509 Incidental Uses, under "refrigerant machinery room." Can anyone verify if this is what a refrigerant machinery room could refer to?

 

Thank you for any guidance, it is much needed!