402.8.7 Service areas fronting on exit passageways.

Mechanical rooms, electrical rooms, building service areas and service elevators are permitted to open directly into exit passageways provided that the exit passageway is separated from such rooms by fire barriers providing the same fire-resistance rating as required for the exit passageway. Door swings from these rooms shall not project into the minimum width of such exit passageways.

402.8.8 Security grilles and doors.

Horizontal sliding or vertical security grilles or doors that are a part of a required means of egress shall conform to the following:

   1.   Doors and grilles shall remain in the full open position during the period of occupancy by the general public.

   2.   Doors or grilles shall not be brought to the closed position when there are 10 or more persons occupying spaces served by a single exit or 50 or more persons occupying spaces served by more than one exit.

   3.   The doors or grilles shall be openable from within without the use of any special knowledge or effort where the space is occupied.

   4.   Where two or more exits are required, not more than one-half of the exits shall be permitted to include either a horizontal sliding or vertical rolling grille or door.

Section BC 403: High-Rise Buildings

403.1 Applicability.

High-rise buildings shall comply with Sections 403.2 through 403.8.

   Exception: The provisions of Sections 403.2 through 403.8 shall not apply to the following buildings and structures:

      1.   Air traffic control towers in accordance with Section 412.3.

      2.   Buildings occupied entirely by Group R-3 classification.

      3.   Open parking garages in accordance with Section 406.5.

      4.   The portion of a building containing a Group A-5 occupancy in accordance with Section 303.6.

      5.   Special industrial occupancies in accordance with Section 503.1.1.

      6.   Buildings with:

         6.1.   A Group H-1 occupancy;

         6.2.   A Group H-2 occupancy in accordance with Section 415.8, 415.9.2, 415.9.3 or 426.1; or

         6.3.   A Group H-3 occupancy in accordance with Section 415.8.

403.2 Construction.

The construction of high-rise buildings shall comply with the provisions of Sections 403.2.1 through 403.2.4.