BCA 2008 by Electronic Blueprint - Energy efficiency of class 7, 8 and 9b buildings
The ABCB (Australian Building Codes Board) has posted on their website for
comment, the proposed amendments to the BCA (Building Code of Australia Volumes 1 and 2),
to be published 1 May 2008. This article draws attention to one issue - Clarification of
the energy efficiency design of Class 7, 8 and 9b Buildings.
When a designer is using BCA Volume 1 Table J1.5 (b) to select a form of construction to
meet the energy saving requirements for external walls of Class 7, 8 or 9b buildings,
there is currently nothing in that table to indicate that J1.1 (a) limits its application
to a Class 7, 8 or 9b building that has a conditioned space. It has been reported that
this is leading to some confusion and incorrect assumptions regarding the requirements.
The proposed amendment is to add a note to Table J1.5 (b), stating:
Note: Refer to J1.1 for the limitations on the application of Table J1.5 b for atriums,
solariums and Class 7, 8 and 9b buildings that do not have conditioned spaces.
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