Abstract
Typically in the New Zealand residential market, concrete floor systems with lightweight walls are the preferred construction method. As floor slabs become progressively thinner, what consistently effects the achievement of the airborne acoustic design targets between adjacent residential units is the noise flanking transmission through the floor. The objective of the research is to determine whether the scientific prediction method contained within ISO 12354-1:2000 - “Building
acoustics - Estimation of acoustic performance in buildings from the performance of elements – Part 1: Airborne sound insulation between
rooms” can be adapted to accurately predict the flanking reduction achieved through the introduction of a concrete nib into a heavy-floor/
lightweight-wall system. The standard is under review, but from the draft available, the prediction approach for this specific application has
not changed and the proposed method in this paper is still valid.