3.2.2.29 — Group A, Division 3, Any Height, Any Area

(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) A building classified as Group A, Division 3 is permitted to conform to Sentence (2) provided, (a) it is not more than 2 storeys in building height, and (b) it has a building area not more than the value in Table 3.2.2.30. (2) Except as permitted by Clauses (c) and (d), the building referred to in Sentence (1) shall be of noncombustible construction, and, (a) floor assemblies shall be fire separations with a fire-resistance rating not less than 1 h, (b) mezzanines shall have a fire-resistance rating not less than 1 h, (c) roof assemblies shall, (i) have a fire-resistance rating not less than 45 min, or (ii) be of heavy timber construction, and (d) loadbearing walls, columns and arches shall have a fire-resistance rating not less than that required for the supported assembly, except that arches and structural members within the storey immediately below a roof assembly are permitted to be of heavy timber construction. (3) If intended for occasional use for trade shows and similar exhibition purposes, the building referred to in Sentence (1) that is more than 1 500 m2 in building area shall be sprinklered.

(1) A building classified as Group A, Division 3 is permitted to conform to Sentence (2) provided, (a) except as permitted by Sentence 3.2.2.7. (1), the building shall be sprinklered, (b) it is not more than 2 storeys in building height, and (c) it has a building area not more than, (i) 12 000 m2 if 1 storey in building height, or (ii) 6 000 m2 if 2 storeys in building height. (2) Except as permitted by Clause (c) and Article 3.2.2.16., the building referred to in Sentence (1) shall be of noncombustible construction, and, (a) floor assemblies shall be fire separations with a fire-resistance rating not less than 1 h, (b) mezzanines shall have a fire-resistance rating not less than 1 h, and (c) loadbearing walls, columns and arches shall have a fire-resistance rating not less than that required for the supported assembly, except that arches are permitted to be of heavy timber construction.

(1) A building classified as Group A, Division 3 is permitted to conform to Sentences (2) and (3) provided, (a) it is not more than 1 storey in building height, and (b) it has a building area not more than, (i) 2 400 m2 if facing one street, (ii) 3 000 m2 if facing two streets, or (iii) 3 600 m2 if facing three streets. (2) The building referred to in Sentence (1) is permitted to be of combustible construction or noncombustible construction used singly or in combination, and, (a) mezzanines shall have, if of combustible construction, a fire-resistance rating not less than 45 min, (b) roof assemblies shall have, if of combustible construction, a fire-resistance rating not less than 45 min, except that the fire-resistance rating is permitted to be waived provided the roof assembly is constructed as a fire-retardant treated wood roof system conforming to Article 3.1.14.1., and the building area is not more than, (i) 1 200 m2 if facing one street, (ii) 1 500 m2 if facing two streets, or (iii) 1 800 m2 if facing three streets, and (c) loadbearing walls, columns and arches supporting an assembly required to have a fire-resistance rating shall, (i) have a fire-resistance rating not less than 45 min, or (ii) be of noncombustible construction. (3) If intended for occasional use for trade shows and similar exhibition purposes, the building referred to in Sentence (1) that is more than 1 500 m2 in building area shall be sprinklered.

(1) A building classified as Group A, Division 3 is permitted to be of combustible construction or noncombustible construction used singly or in combination, provided, (a) except as permitted by Sentence 3.2.2.7. (1), the building is sprinklered, (b) it is not more than 1 storey in building height, and (c) it has a building area not more than 7 200 m2.

(1) A building classified as Group A, Division 3 is permitted to be of combustible construction or noncombustible construction used singly or in combination, provided, (a) it is not more than 1 storey in building height, and (b) it has a building area not more than, (i) 1 000 m2 if facing one street, (ii) 1 250 m2 if facing two streets, or (iii) 1 500 m2 if facing three streets.

(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.