The Ontario Building Code | Group F, Division 3, up to 2 Storeys Group F, Division 3, up to 2 Storeys

(1) A building classified as Group F, 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

Maximum Building Area, Group F, Division 3, up to 2 Storeys

Forming Part of Sentence


Column 1

Column 2

Column 3

Column 4

No. of Storeys

Maximum Area, m2

Facing 1 Street

Facing 2 Streets

Facing 3 Streets



1 600

2 000

2 400




1 000

1 200

(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 and, if of combustible construction, shall have a fire-resistance ratingnot less than 45 min,

(b) loadbearingwalls, 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.