(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 3.2.2.93.
(2)
A rooftop enclosure for elevator machinery or for a service room, not more than 1 storey high, 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 3.2.2.93.
(4)
A rooftop enclosure for a stairway need not have a fire-resistance rating nor be constructed as a fire separation.