1024.6 Penetrations.

Penetrations into or through an exit passageway are prohibited except for equipment and ductwork necessary for independent pressurization, hydronic piping and related heating equipment limited to serving the exit passageway in which such piping and equipment is located, sprinkler piping, standpipes, electrical raceway for fire department communication and electrical raceway serving the exit passageway and terminating at a steel box not exceeding 16 square inches (0.010 m 2 ). Such penetrations shall be protected in accordance with Section 714. There shall not be penetrations or communicating openings, whether protected or not, between adjacent exit passageways.

   Exception: Membrane penetrations shall be permitted on the outside of the exit passageway. Such penetrations shall be protected in accordance with Section 714.3.2.

1024.7 Ventilation.

Equipment and ductwork for exit passageway ventilation as permitted by Section 1024.6 shall comply with one of the following:

   1.   The equipment and ductwork shall be located exterior to the building and shall be directly connected to the exit passageway by ductwork enclosed in construction as required for shafts.

   2.   Where the equipment and ductwork is located within the exit passageway, the intake air shall be taken directly from the outdoors and the exhaust air shall be discharged directly to the outdoors, or the air shall be conveyed through ducts enclosed in construction as required for shafts.

   3.   Where located within the building, the equipment and ductwork shall be separated from the remainder of the building, including other mechanical equipment, with construction as required for shafts.

In each case, openings into the fire-resistance-rated construction shall be limited to those needed for maintenance and operation and shall be protected by opening protectives in accordance with Section 716 for shaft enclosures.

Exit passageway ventilation systems shall be independent of other building ventilation systems.

Section BC 1025: Luminous Egress Path Markings

1025.1 General.

Approved luminous egress path markings delineating the exit path shall be provided in all high-rise buildings subject to Section 403.5 having occupied floors located more than 75 feet (22 860 mm) above the lowest level of Fire Department vehicle access in accordance with Sections 1025.1 through 1025.9.

   Exceptions:

      1.   Luminous egress path markings shall not be required on the level of exit discharge in lobbies that serve as part of the exit path in accordance with Section 1028.1, Exception 1.

      2.   In open parking garages, luminous egress path markings shall not be required in open exit stairways serving only the open parking garage, and areas of open parking garages that serve such part of the exit path.

      3.   Luminous egress path markings shall not be required on egress paths serving Group R-2.

1025.2 Required markings.

Egress path markings shall be provided in interior exit stairways, interior exit ramps and exit passageways, in accordance with Sections 1025.2.1 through 1025.2.9. Entrances to interior exit stairways, interior exit ramps and exit passageways shall be provided with exit signs in compliance with Section 1025.2.6.1.

1025.2.1 Steps.

A solid and continuous stripe shall be applied to the horizontal leading edge of each step and shall extend for the full length of the step. Outlining stripes shall have a minimum horizontal width of 1 inch (25.4 mm) and a maximum width of 2 inches (50.8 mm). The leading edge of the stripe shall be placed not more than 1/2 inch (12.7 mm) from the leading edge of the step and the stripe shall not overlap the leading edge of the step by more than 1/2 inch (12.7 mm) down the vertical face of the step. Outlining stripes on steps shall comply with Figure S101.1(2) in Appendix S.

   Exception: The minimum width of 1 inch (25.4 mm) shall not apply to outlining stripes listed in accordance with UL 1994.

1025.2.2 Landings.

The leading edge of landings shall be marked with a stripe consistent with the dimensional requirements for steps. Stripes on landings shall comply with Figure S101.1(3) in Appendix S.

1025.2.3 Handrails.

Handrails and handrail extensions shall be marked with a solid and continuous stripe having a minimum width of 1 inch (25.4 mm). The stripe shall be placed on the top surface of the handrail for the entire length of the handrail, including extensions and newel post caps. Where handrails or handrail extensions bend or turn corners, the stripe shall not have a gap of more than 4 inches (101.6 mm). Stripes on handrails shall comply with Figure S101.1(4) in Appendix S.

   Exception: The minimum width of 1 inch (25.4 mm) shall not apply to outlining stripes listed in accordance with UL 1994.

1025.2.4 Perimeter demarcation lines.

Stair landings and other floor areas within interior exit stairways, interior exit ramps and exit passageways, with the exception of the sides of steps, shall be provided with solid and continuous demarcation lines on the floor or on the walls or a combination of both. The stripes shall be 1 to 2 inches (25.4 mm to 50.8 mm) wide with interruptions not exceeding 4 inches (101.6 mm).

   Exception: The minimum width of 1 inch (25.4 mm) shall not apply to outlining stripes listed in accordance with UL 1994.