It is interesting to note that other than ‘doorway’ the term door does not appear in the BCA definition of Exit. All the elements in a building defined under the term exit must have a door (exit doors) included to allow passage from a floor area through to the nominated exit. Because there are multiple building classifications under Volume 1 of the BCA ie class 2 to 9, the BCA contained significant criteria for exit doors (in exits and paths of travel to an exit) which varies considerably with a class of building relative to its height and to other buildings of differing classification.
Specific criteria for doors (exit doors) are set out in individual clauses relative to the building classification.
In Part D2 Construction of Exits clauses D2.21 Operation of Latch provides the requirements for the doors (exit doors) latch, a part extract follows:
D2.21 Operation of latch
(a) Except as required by (b), a door in a required exit, forming part of a required exit or in the path of travel to a required exit must be readily openable without a key from the side that faces a person seeking egress, by a single hand downward action or pushing action on a single device which is located between 900 mm and 1.1 m from the floor, except if it –
Part D Construction of Exits in the BCA contains clauses D2.0 to D2.23 inclusive, a lot of these clause as per D2.21 above deal with doors (exit doors) when installed in a required exit or otherwise.
The following is a part extract of clause I1.1 for an Essential Safety Measure (as appeared in BCA 2013) known as doors (exit doors):
Table I1.2 Safety Measures – Means of Egress