3.2.2.60. Group D, up to 6 Storeys, Sprinklered

(1)

A building classified as Group D is permitted to conform to Sentence (2) provided

(a)

it is sprinklered throughout,

(b)

it is not more than 6 storeys in building height,

(c)

it has a height of not more than 18 m measured between the floor of the first storey and the uppermost floor level that does not serve a rooftop enclosure for elevator machinery, a stairway or a service room used only for service to the building, and

(d)

it has a building area of not more than

(i)

18 000 m2 if 1 storey in building height,

(ii)

9 000 m2 if 2 storeys in building height,

(iii)

6 000 m2 if 3 storeys in building height,

(iv)

4 500 m2 if 4 storeys in building height,

(v)

3 600 m2 if 5 storeys in building height, or

(vi)

3 000 m2 if 6 storeys in building height.

(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)

floor assemblies shall be fire separations with a fire-resistance rating not less than 1 h,

(b)

roof assemblies shall have a fire-resistance rating not less than 1 h,

(c)

except as provided by Sentence (3), where the roof assembly has a height greater than 25 m measured from the floor of the first storey to the highest point of the roof assembly, the roof assembly shall be constructed of noncombustible construction or fire-retardant-treated wood conforming to Article 3.1.4.5.,

(d)

mezzanines shall have a fire-resistance rating not less than 1 h, and

(e)

loadbearing walls, columns and arches shall have a fire-resistance rating not less than that required for the supported assembly.

(3)

Where buildings conforming to Sentence (2) include non-contiguous roof assemblies at different elevations, the roof assemblies are permitted to be evaluated separately to determine which ones are required to be constructed in accordance with Clause (2)(c).

(4)

Group A, Division 2 major occupancies, Group E major occupancies, Group F, Division 2 and 3 major occupancies and storage garages located in a building or part thereof within the scope of this Article are permitted to be constructed in accordance with this Article, provided

(a)

the Group A, Division 2 major occupancy, Group E major occupancy and Group F, Division 2 or 3 major occupancy are located below the third storey, and

(b)

storage garages are located below the fourth storey. (See also Article 4.4.2.1.) (See Note A-3.2.2.51.(5) and 3.2.2.60.(4))