The Ontario Building Code | Group F, Division 2, up to 4 Storeys, Increased Area

3.2.2.69. Group F, Division 2, up to 4 Storeys, Increased Area

(1) A building classified as Group F, Division 2 is permitted to conform to Sentence (2) provided,

(a) it is not more than 4 storeys in building height, and

(b) it has a building area not more than the value in Table 3.2.2.69.A. or Table 3.2.2.69.B.

(2) Except as permitted by Article 3.2.2.16., the buildingreferred 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) mezzaninesshall have a fire-resistance rating not less than 1 h,

(c) if the buildingis not sprinklered, roof assemblies shall have a fire-resistance rating not less than 1 h, and

(d) loadbearingwalls, columns and arches shall have a fire-resistance rating not less than that required for the supported assembly.

Table 3.2.2.69.A.
Maximum Building Area, Group F, Division 2, up to 4 Storeys, Increased Area

Forming Part of Sentence 3.2.2.69.(1)

Item

Column 1

Column 2

Column 3

Column 4

No. of Storeys

Maximum Area, m2

Facing 1 Street

Facing 2 Streets

Facing 3 Streets

1.

1

6 000

7 500

9 000

2.

2

3 000

3 750

4 500

3.

3

2 000

2 500

3 000

4.

4

1 500

1 875

2 250

Table 3.2.2.69.B.
Maximum Building Area, Group F, Division 2, up to 4 Storeys, Increased Area, Sprinklered

Forming Part of Sentence 3.2.2.69.(1)

Item

Column 1

No. of Storeys

Column 2

Maximum Area, m2

1.

1

18 000

2.

2

9 000

3.

3

6 000

4.

4

4 500

In Plain Language

This article sets one of the specific size-and-construction packages available for a Group F, Division 2 buildings building: up to 4 storeys with increased area per Tables 3.2.2.69.A/B, noncombustible construction. Designers can choose whichever of the several packages in this Subsection best fits the building being planned, trading height and area against construction type, sprinklering, and fire-resistance rating requirements.

This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.