The Ontario Building Code | Mezzanines

3.2.1.6. Mezzanines

(1) The floor assembly of a mezzanine that is required to be considered as a storey in calculating building height shall be constructed in conformance with the fire separation requirements for floor assemblies in Articles 3.2.2.20. to 3.2.2.83.

3.2.2. Building Size and Construction Relative to Occupancy