The Building Code of Australia (BCA) has always contained measures to prevent falls from heights.Until relatively recently, there were no specific requirements for windows, designers and certifiers would try to adapt the requirements for balustrades and apply them to windows. Finally in 2009 specific requirements for windows were introduced. They were incorporated with, but distinct from the balustrade requirements.
The wording has changed slightly over the years, but the essential details of the requirements have remained the same since BCA2009.
In response to a spate of children falling from windows the Australian Building Codes Board(ABCB) undertook to introduce new measures in the National Construction Code through BCA2013to specifically prevent small children from falling from windows and balconies.
For more information click here to view the PDF Australian Window Association information sheet on fall prevention