Emergency lighting is nominated by the building surveyor/ building certifier to be provided in buildings to ensure the protection of the occupants in the event of a power failure especially during a fire. Emergency lighting as an essential safety measure must provide adequate lighting for the identification of exits, paths of travel and obstructions in the pathway.
Building Code of Australia
The Building Code of Australia requires emergency lighting to be installed in every fire-isolated stairway, fire-isolated ramp, fire-isolated passageway and egress passage. Also emergency lighting is to be installed in every storey having a floor area of more than 300 sqm in a class 5 (offices), 6 (shops), 7 (warehouse), 8 (factories) and 9 (public buildings) under a building approval. The BCA contains many other provisions relative to the placement of emergency lighting.
Clause E4.4 Design and operation of emergency lighting requires emergency lighting to be installed in accordance with AS 2293.1-2005 Emergency escape lighting and exit signs for buildings – System design, installation and operation.
The following illustration depicts the provisions relevant for the illustration of emergency lighting in a building.