Deck on Roof of R-2 condominium

[archclem]

The project is proposed as a 12 unit condominium, type 5-A construction, sprinklered NFPA13R. It will be designed under 2012 IBC. The owner is considering placing a 2,100 s.f. deck on the roof for the residents use only. It would be the only use on the roof and too large to meet the definition of an accessory use by my reading of the code. What is the use per the code and which factor is used for calculating occupancy?

 

[cda]

Sounds like an area of assembly

Two exits??

Covered in any way ??

 

[archclem]

Yes, Assembly would be my assumption as well because of the potential for gathering.
It is an open uncovered area without a specific program use so unconcentrated (15 net) should apply.
We are planning on 2 exits.

 

[steveray]

Mixed use here would kick you out of 13R....I would probably use 15 net for that deck, maybe 5 if it were a bar setting...