Stair(s) to Roof - Structure with Firewalls

[tsquare69]

4 story building divided by Firewall to meet area limitations
IBC 2018 1011.12 Stairway to roof. Requires a stairway for roof access
Due to the Firewall this would technically be two buildings would it require a stair from each side of the firewall to extend to the roof? or is it acceptable to have only a stair on one side of firewall access roof.?

 

[RLGA]

Section 503.1, states in part,

For the purposes of determining area limitations, height limitations and type of construction, each portion of a building separated by one or more fire walls complying with Section 706 shall be considered to be a separate building.​

In other words, for any other purpose in the code not in bold font above, the building is a single building. Thus, only one stair is required to go to the roof.

 

[steveray]

I would support that...

 

[Paul Sweet]

You might have to put steps over the firewall if it runs above the roof to get to the other side.

 

[tsquare69]

Thanks, That adds clarity.