In a recent audit of north Queensland building sites, the Queensland Building and Construction Commission (QBCC)  identified quite a few builders restraining the tops of internal timber walls by firing framing nails into metal ceiling battens installed onto the underside of roof truss bottom chords. This is a non-compliant building practice as it is not in accordance with Australian Standards AS1684 or AS4440. The QBCC revealed that this non-compliant method is widespread. However, when construction work of this nature is found, contractors are obliged to rectify construction and bring into conformity with Australian Standards [...]