One hour Fire rated separation

This is the scenario. Building A (7115 s.f.) sprinkled - no. stories (1) -sprinkled - open space all around type VB construction.
A tenant improvement of 2916s.f. Pizza Parlor Pizza Parlor and existing non-rated demising wall.
The building Officials insist on requiring a 1-hr fire rated separation between the TI (A2 classification and the adjacent spaces occupancy classification is B and or M.
Original Post
A2 occupancy group in a sprinklered building requires a minimum one-hour fire-resistance occupancy separation from B and M occupancies. 2007 CBC, Table 508.3.3 and section 508.3.3.

IF you are able to analyze the building as "nonseparated occupancies" and comply with section 508.3.2, then the occupancy separation between the tenants (A2 and B/M) will not be required (see section 508.3.2.3).
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