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Spaces or dwelling units occupied by different tenants shall be separated by fire barriers having at least 1-hour fire-resistance ratings.

Exceptions:
  1. Nonresidential spaces occupied by different tenants located in buildings that are sprinklered throughout.
  2. Tenant spaces in covered mall buildings complying with Section 402.

Related Code Sections

§27-341 Fire Protection Construction Requirements, Fire Separations
(a) Different tenancies. Different tenant apartments, suites, stores, offices, or other spaces that are not separated from each other by fire divisions ...
§27-521.12 Special Uses and Occupancies, Construction; General
at any level in a mall shall be twenty feet. (c) Where different tenancies have openings to a mall the tenancies shall be separated in accordance ...