3.2.2.31 — Group A, Division 3, up to 2 Storeys, Sprinklered

(1) Unless otherwise permitted by Articles 3.2.2.20. to 3.2.2.83., a roof assembly in a building up to 2 storeys in building height is permitted to be of heavy timber construction regardless of building area or type of construction required, provided the building is sprinklered. (2) If Sentence (1) permits a roof assembly to be of heavy timber construction, structural members in the storey immediately below the roof assembly are permitted to be of heavy timber construction.

(1) Except as permitted by Article 3.2.2.8. and Sentences 3.2.2.42A. (4), 3.2.2.43A. (5), 3.2.2.49A. (3) and 3.2.2.50A. (4), 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 was 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. (3) For the purposes of Sentences (1) and (2), a retirement home is deemed to be a separate major occupancy.