The Ontario Building Code | Group D, up to 6 Storeys
3.2.2.50. Group D, up to 6 Storeys
(1) A building classified as Group D is permitted to conform to Sentence (2) provided,
(a) it is not more than 6 storeys in building height, and
(b) it has a building area not more than the value in Table 3.2.2.50.
Table 3.2.2.50.
Maximum Building Area, Group D, up to 6 Storeys
Forming Part of Sentence 3.2.2.50.(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 | not limited | not limited | not limited |
| 2. | 2 | 7 200 | not limited | not limited |
| 3. | 3 | 4 800 | 6 000 | 7 200 |
| 4. | 4 | 3 600 | 4 500 | 5 400 |
| 5. | 5 | 2 800 | 3 600 | 4 320 |
| 6. | 6 | 2 400 | 3 000 | 3 600 |
(2) 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) mezzaninesshall have a fire-resistance rating not less than 1 h,
(c) roof assemblies shall have a fire-resistance rating not less than 1 h, except that in a building not more than 1 storeyin building height this requirement is waived, and
(d) loadbearingwalls, columns and arches shall have a fire-resistance rating not less than that required for the supported assembly.