AUST – HENDRY building surveyors advise that the Building Code of Australia (BCA) Part D1 ‘Provision for Escape: Occupant Access to Two Exits’ is quite specific about egress requirements for a building over 25 metres in height. The following information will help clients understand the requirements and when they apply.
Building Code of Australia: Clause – Issue
Two exits are required in buildings exceeding an effective height of 25m under Part D1 of the BCA.
Building Code of Australia: Clause – Explanation
Under the BCA in a high rise building exceeding 25m, Clause D1.2(g)(ii) requires every occupant to have access to two exits without passing through another sole occupancy unit. Even though there may be only one tenant occupying the whole floor, occupants (general public) within the lift lobby do not have access to stair 2. The door is therefore not permitted unless in an emergency (fire alarm) the door lock deactivates and allows unrestricted access into the corridor to access the stair 2. An exit sign would be required above the door.
The following illustration from BCA Illustrated depicts occupant access to two exits in a high rise office building under BCA Part D1.
BCA Illustrated contains 178 illustrations (each containing an issue, explanation, references and an illustration) inPart D1 ‘Provision for Escape’.
For BCA consultancy advice please contact our closest HENDRY Building Surveying Consultants office in your stateclick here.
Building Legislation Table
Refer to our Building Legislation table for further information on the building control process.