What occupancy is my building?

[gnarkill283]

I have a mixture of mercantile, restaurants, lobbies for the floors above, back of house mechanical and storage rooms on the first floor, open sided parking garage on the 2nd floor, office space on the 3rd and 4th floor, and single family residential on 5th floor and roof deck. What occupancy do I use for everything?

 

[ccollings]

i think you have to go mixed use and classify each floor separately.

 

[ChrisCampbell]

Sounds like you clearly have a mixed-occupancy building, though some of these may qualify as an accessory occupancy based on the area. Based on the list you provided, I would say you have the following occupancies:

M, A-2, A-3, B, R-2, S (could be S-1 or S-2 depending on the storage)

 

[cda]

I have a mixture of mercantile, restaurants, lobbies for the floors above, back of house mechanical and storage rooms on the first floor, open sided parking garage on the 2nd floor, office space on the 3rd and 4th floor, and single family residential on 5th floor and roof deck. What occupancy do I use for everything?

Will it be one business or multiple tenants???

 

[instantmessenger]

This depends entirely on the areas of each use and separations. It sounds like you have a Mixed use, Separated building. Depending on size the restaurant is either A-2 or B use. If there are shelves in the businesses it could be M use. The parking is S-2, make sure what separations you have. If the R use is small, it's probably an accessory occupancy.

 

[gnarkill283]

Will it be one business or multiple tenants???

multiple tenants. So for construction type I need to use the most restrictive occupancy which is the same for all A, B, E, F, M, S, U

 

[cda]

multiple tenants. So for construction type I need to use the most restrictive occupancy which is the same for all A, B, E, F, M, S, U

Or other methods allowed by code, such as separated use.

Plus, I assume there will be a fire sprinkler system??

 

[gnarkill283]

Yes - it's concrete construction so type 1B will be fine for all occupancies

 

[instantmessenger]

Are you saying that you have no separations?

 

[gnarkill283]

I could do no separations and use the most restrictive occupancy if separating is a burden but if the uses are all on different floors than the separation requirements can all be handled in the floor construction right? Just need 2 hour floor construction between each use?

 

[instantmessenger]

Yes but you also have to comply with chapter 9 for the most restrictive occupancy, for all parts of the building.

 

[SH225]

Yes - it's concrete construction so type 1B will be fine for all occupancies

Rather than type 1B just because concrete can provide the rating, it could be a better plan to move down to the least-restrictive type you can comply with. You‘ll need at least a 1-hour assembly for the separations, but this might otherwise be type 2B or 3B.

 

[ADAguy]

Bag o worms, uses will continue to change over time, no?