Incidental use occupancy..

[bladeyoon]

Hello,

Can someone give me an example of Incidental use occupancy..?
Carolin note says "Incidental use occupancy: a space or room, not exceeding 10% of the floor area of the story where it is located, which is incidental to a main occupancy and has the same qualification has the nearest main occupancy, but must be separated from the main occupancy by a fire barrier. Ex: linen collection room on the same floor as hotel rooms"

I do not understand what it means by "same qualification has the nearest main occupancy"
and why does this need to be separated by fire barrier..?

Please help!

[thd7t]

Hello,

Can someone give me an example of Incidental use occupancy..?
Carolin note says "Incidental use occupancy: a space or room, not exceeding 10% of the floor area of the story where it is located, which is incidental to a main occupancy and has the same qualification has the nearest main occupancy, but must be separated from the main occupancy by a fire barrier. Ex: linen collection room on the same floor as hotel rooms"

I do not understand what it means by "same qualification has the nearest main occupancy"
and why does this need to be separated by fire barrier..?

Please help!

Best to go to the IBC with this. "Qualification" was just a word in Caroline's notes. She doesn't get everything right. Also, according to IBC, incidental uses don't need to be separated. A good example would be a large office building with a small auditorium space. The auditorium wouldn't have to be separated if it was under 10%of the area of its story.

I use this example, because code gives a lot of exceptions for small Assembly spaces, but they do come up a lot in practice.

[ablumetti]

the wording she used is confusing but it means same qualification (classification) AS the nearest main occupancy. in the example they give, a hotel would be a "R" occupancy and the fire rated room within this occupancy shares the "R" qualification or classification even though it has a fire separation. As compared to a accessory use, which can have a different occupancy class. (ie: a "m" mercantile small gift shop within an "A" assembly occupancy building.) it doesn't NEED to have a fire separation, but the example they give would...multiple machine and drying machines which are a fire hazard on the same floor as sleeping units.