(1)
All leased areas within a rapid transit station shall be
(a)
sprinklered, and
(b)
separated from the remainder of the floor area by a fire separation of noncombustible construction that is not required to have a fire-resistance rating.
(2)
A door acting as a closure in the fire separation in Clause (1)(b) is not required to be equipped with a self-closing device.
(3)
Where leased areas are located on opposite sides of a means of egress, the width of the means of egress shall not be reduced to less than 5 m.
(4)
Except as provided in Sentence (5), where the leased area on any floor level exceeds 15% of the public area on that level, the public area shall be sprinklered.
(5)
In a rapid transit station that is erected entirely above the adjoining finished ground level and is a stand-alone building, where the leased area on any floor level exceeds 20% of the public area on that level, the public area shall be sprinklered.
(6)
In determining the leased area in Sentences (4) and (5), it is not necessary to include a leased area that is separated from the public area by a fire separation having a fire-resistance rating not less than
(a)
2 h where the leased area contains a mercantile or medium-hazard industrial occupancy, or
(b)
1 h where the leased area contains any other occupancy.
(7)
A leased area is permitted on a platform level provided it is
(a)
located not less than 5 m from the platform edge,
(b)
located not less than 5 m from an egress facility, and
(c)
not located in a dead-end portion of the platform.