The Ontario Building Code | Rooftop Enclosures

3.2.2.14. Rooftop Enclosures

(1) A rooftop enclosure for elevator machinery or for a service room shall be constructed in accordance with the type of construction required by Articles 3.2.2.20. to 3.2.2.83.

(2) A rooftop enclosure for elevator machinery or for a service room, not more than 1 storeyhigh, is not required to have a fire-resistance rating.

(3) A rooftop enclosure for a stairway shall be constructed in accordance with the type of construction required by Articles 3.2.2.20. to 3.2.2.83.

(4) A rooftop enclosure for a stairway need not have a fire-resistance rating nor be constructed as a fire separation.