(1)
A voice communication system conforming to Article 3.2.4.22. shall be provided in a building if
(a)
the floor of the top storey is more than 36 m above grade,
(b)
a floor area or part of a floor area located above the third storey is designed or intended for use as a Group B, Division 2 or 3 occupancy, or
(c)
a floor area or part of a floor area located more than 18 m above grade is designed or intended for use as a retirement home regulated under the Retirement Homes Act, 2010 that is a Group C occupancy.