2009 IBC; Chapter 7, definition of Fire Separation Distance. My client's rep is an architect who provided the attachment. Say the adjacent existing buildings are Type II-B, which allow for 10 feet of fire separation distance with no wall ratings. But historically, they had measured to the midde of the existing road. Now the local government wants to build this stage in the road. Per code, the new building is Type II-B, A occupancy, and needs no wall or opening protection, as there is 10 feet to the adjacent property line.
The client rep thinks that because the existing buildings have 10 feet to the centerline of the adjusted clear public way, they too need no protection. But looking at the attachment, I'm not convinced you can count the same real estate twice. Any thoughts? Thanks! I've added the IBC definition below for your use.
From the 2009 IBC: FIRE SEPARATION DISTANCE. The distance measured from the building face to one of the following:
1. The closest interior lot line;
2. To the centerline of a street, an alley or public way; or
3. To an imaginary line between two buildings on the property.