1020.5.1 Corridor ceiling.

Use of the space between the corridor ceiling and the floor or roof structure above as a return air plenum shall be in accordance with the New York City Mechanical Code.

1020.6 Corridor continuity.

Fire-resistance-rated corridors shall be continuous from the point of entry to an exit, and shall not be interrupted by intervening rooms.Where the path of egress travel within a fire-resistance-rated corridor to the exit includes travel along unenclosed exit access stairways or ramps, the fire-resistance rating shall be continuous for the length of the stairway or ramp and for the length of the connecting corridor on the adjacent floor leading to the exit.

   Exceptions:

      1.   Foyers, lobbies or reception rooms constructed as required for corridors shall not be construed as intervening rooms.

      2.   Enclosed elevator lobbies as permitted by Item 1 of Section 1016.2 shall not be construed as intervening rooms.

Section BC 1021: Egress Balconies

1021.1 General.

Balconies used for egress purposes shall conform to the same requirements as corridors for minimum width, required capacity, headroom, dead ends and projections.