To grant concessions for:
• low-rise Class 2 and Class 3 buildings provided with a good means of egress; and
• sprinkler protected Class 9c buildings.

C2D6 Two storey Class 2, 3 or 9c buildings

Low-rise Class 2 and Class 3 buildings

The concession for Class 2 and Class3 buildings is made on the basis that the level of risk to occupants does not warrant the full application of the type of construction requirements.

The circumstances outlined in C2D6(a) and (b) are alternative options.They do not have to both exist to bring the C2D6 concession into operation.

The concession also applies to a building containing a mixture of Class 2 and Class3. Figure C2D6 illustrates an example of the use of the concession allowed by C2D6.

Figure C2D6: Example of the concession allowed by C2D6

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Figure C2D6: Example of the concession allowed by C2D6

Low-rise Class 9c buildings

The concession for Class 9c buildings recognises the benefits of sprinkler systems and differences between Types A, B and C construction. It must be remembered that the Class 9c building must comply with all the other BCA provisions, including the floor area limitations contained in Table C3D3.