(1)
Except as permitted in Article 3.2.2.8. and Sentences 3.2.2.18.(2), 3.2.2.48.(4), 3.2.2.51.(5), 3.2.2.57.(3), 3.2.2.60.(4) and 3.2.2.93.(5) to (7), in a building in which one major occupancy is located entirely above another major occupancy, the requirements in this Subsection for each portion of the building containing a major occupancy shall apply to that portion as if the entire building were of that major occupancy.
(2)
If one major occupancy is located above another major occupancy, the fire-resistance rating of the floor assembly between the major occupancies shall be determined on the basis of the requirements of this Subsection for the lower major occupancy. (See also Article 3.1.3.1.)
(3)
For the purposes of Sentences (1) and (2), a retirement home is deemed to be a separate major occupancy.
(4)
In a building or part thereof constructed in conformance with Article 3.2.2.48., 3.2.2.57. or 3.2.2.93., if one major occupancy is located above another major occupancy,
(a)
the most restrictive encapsulation requirements of Article 3.1.6.4. and Table 3.2.2.93. for any major occupancy contained within the building shall apply to the encapsulation required on the interior of vertical service spaces and exit stairs, and
(b)
the encapsulation requirements of Article 3.1.6.4. and Table 3.2.2.93. for a mass timber floor assembly between the major occupancies shall be determined on the basis of the requirements for,
(i)
the upper major occupancy for the encapsulation of the upper surface of the mass timber floor assembly, and
(ii)
the lower major occupancy for the encapsulation of the underside of the mass timber floor assembly.