According to the Clause D2.7 - Installations in exits and paths of travel in NCC 2019 Building Code of Australia - Volume One state that there a specific limitations on services that are permitted within an exit or the paths of travel to a required exit. The restrictions include;
- Access to service shafts and services other than to fire-fighting or detection equipment as permitted in the Deemed- to-Satisfy Provisions of Section E, must not be provided from a fire-isolated stairway, fire-isolated passageway or fire-isolated ramp.
- An opening to any chute or duct intended to convey hot products of combustion from a boiler, incinerator, fireplace or the like, must not be located in any part of a required exit or any corridor, hallway, lobby or the like leading to a required exit.
- Gas or other fuel services
- Services or equipment comprising—
- electricity meters, distribution boards or ducts; or
- central telecommunications distribution boards or equipment; or
- electrical motors or other motors serving equipment in the building, may be installed in—
- a required exit, except for fire-isolated exits specified in (a); or
- in any corridor, hallway, lobby or the like leading to a required exit, if the services or equipment are enclosed by non-combustible construction or a fire-protective covering with doorways or openings suitably sealed against smoke spreading from the enclosure.
- Electrical wiring may be installed in a fire-isolated exit if the wiring is associated with—
- a lighting, detection, or pressurisation system serving the exit; or
- a security, surveillance or management system serving the exit; or
- an intercommunication system or an audible or visual alarm system in accordance with D2.22; or
- the monitoring of hydrant or sprinkler isolating valves.