3.13.4.

(1) The occupant load for public areas within a rapid transit station shall be,

(a) determined in conformance with this Subsection, and

(b) based on peak hour patronage as projected for design of the transit system.

(2) The platform occupant load for each platform in a rapid transit station shall be the greater of the a.m. or p.m. peak period loads calculated in accordance with Sentences (3) to (5).

(3) The a.m. and the p.m. peak period occupant loads for each platform shall be based on the simultaneous evacuation of the entraining load and the link load for that platform.

(4) The entraining load for each platform shall be the sum of the entraining loads for each track serving that platform and the entraining load for each track shall be based on the entraining load per train headway multiplied by,

(a) a factor of 1.3 to account for surges, and

(b) in the peak direction for each route, an additional factor of 2 to account for a missed headway.

(5) The link load for each platform shall be the sum of the link loads for each track serving that platform and, except as provided in Sentence (6), the link load for each track shall be based on the link load per train headway multiplied by,

(a) a factor of 1.3 to account for surges, and

(b) in the peak direction for each route, an additional factor of 2 to account for a missed headway.

(6) The maximum link load at each track shall be the maximum calculated train load.

(1) Except as provided in Sentence (2), escalators conforming to the requirements of Sentences 3.13.4.5.(3) and 3.13.4.6.(1) shall be acceptable as part of a required means of egress in a rapid transit station.

(2) Escalators forming part of a required means of egress shall not comprise more than one half of the required egress capacity from any one level.

(3) Horizontal exits conforming to Sentence (4) may provide all of the required egress capacity from a rapid transit station.

(4) Horizontal exits to any one building shall not comprise more than one half of the required egress capacity from any area within a rapid transit station.

(5) A protected route shall be provided with emergency ventilation conforming to Subsection 3.13.7.

(6) In an aboveground unenclosed station, the protected route is permitted to begin at the point of leaving the platform.

(7) In an enclosed or underground station, the protection for the protected route shall consist of,

(a) a fire separation having a fire-resistance rating not less than 1 h,

(b) construction having a fire-resistance rating not less than 1 h, or

(c) wired glass assemblies conforming to Supplementary Standard SB-2.

(1) Each platform in a rapid transit station shall be served by no fewer than 2 means of egress that are independent of and remote from each other from the platform to the exterior of the station.

(2) Where a continuous level walking surface is provided between two adjacent platforms, they may be considered as one platform for the purpose of conforming to this Subsection.

(3) At the platform level, the distance separating the egress facilities in Sentences (1) and (2) shall be the greater of one car length or 25 m.

(4) Except as required in Sentence (1), two or more means of egress are permitted to converge in conformance with Sentence 3.13.4.4.(6).

(5) Means of egress from platforms shall be located so that the travel time from the most remote point on a platform to a protected route does not exceed 4 min based on travel speeds of,

(a) 38 m/min for horizontal travel, and

(b) 21 m/min for vertical rise.

(1) For a rapid transit station, the required aggregate egress capacity from each platform shall be determined by dividing the platform occupant load determined in accordance with Sentences 3.13.4.1.(2) to (6) by the required platform clearance time determined in accordance with Sentence (3).

(2) Where 2 platforms are considered as 1 platform as provided in Sentence 3.13.4.3.(2), the required egress capacity for each platform shall be determined separately.

(3) The required platform clearance time shall be 4 min less the travel time between the platform and the entry into the protected route based on travel speeds of,

(a) 38 m/min for horizontal travel, and

(b) 21 m/min or vertical rise.

(4) For each means of egress, the required egress capacity at the platform shall be maintained for the entire length of the means of egress.

(5) Except as provided in Sentence (6), where 2 or more means of egress converge, the required egress capacity beyond that point shall be cumulative.

(6) The egress capacity in Sentence (5) need not be cumulative after converging where it can be shown that the platform clearance time in Sentence (3) is not exceeded.

(1) Except as otherwise required in this Subsection, the required width of means of egress serving platforms in a rapid transit station shall be determined based on,

(a) the required egress capacity determined in conformance with Article 3.13.4.4., and

(b) the pedestrian flow rate for the type of means of egress facility listed in Table 3.13.4.5.

(2) In calculating the required width of corridors and ramps with a grade of less than 4%, 300 mm at each sidewall shall be added to the width determined based on required egress capacity.

(3) In calculating the required width of egress routes, one escalator at each level in a rapid transit station shall be deemed to be out of service and not available for egress purposes.

(4) Except as provided in Sentence (5), the minimum width of means of egress facilities serving platforms shall be,

(a) 1 750 mm for corridors and ramps,

(b) 1 750 mm for stairs,

(c) 430 mm for turnstiles,

(d) 500 mm for fare collection gates,

(e) 600 mm nominal width for escalators, and

(f) 900 mm for a door leaf.

(5) A second means of egress as required by Sentence 3.13.4.3.(1) is permitted to be not less than 1 100 mm wide.

(6) The minimum width of platforms shall be,

(a) 3.2 m for side platforms, and

(b) 6.4 m for island platforms.

(7) The minimum unobstructed width of platforms measured from the platform edge shall be 2.5 m.

(1) Escalators forming part of a required means of egress shall,

(a) where equipped to run reverse to the direction of egress travel, be capable of being stopped remotely and locally, and

(b) have a vertical rise not more than 12 m between floors or landings.

(2) Where electrically operated gates or turnstiles used for fare collection are intended to be used as part of a required means of egress from a rapid transit station, provision shall be made to release the gates or turnstiles in accordance with Sentence (4) to allow them to operate freely in the direction of egress travel.

(3) Where locked doors that prevent entry into a fare-paid area are to be used as part of a required means of egress from a rapid transit station, provision shall be made to release the doors in accordance with Sentence (4) to allow them to operate freely in the direction of egress travel.

(4) The release device required in Sentences (2) and (3) shall be installed as an ancillary device to the fire alarm system and shall release immediately,

(a) upon activation of the fire alarm signal,

(b) in the event of a power failure or ground fault, or

(c) upon actuation of a manually operated switch accessible to authorized personnel and located in,

(i) a fare collector’s booth or kiosk at the station, or

(ii) the central supervising station.

(5) After release, the gates or turnstiles in Sentence (2) or the doors in Sentence (3) shall be capable of reactivation only by manual actuation of the switch in Clause (4)(c).