The latest requirements of the building code of australia (bca 2007) require minimum levels of sound attenuation/isolation between floors in various classes of construction.
The most stringent of these relates to multi-level, multiple sole-occupancy units, (multi-level apartment buildings (bca 2007, class-2 construction).
In bca 2007, class-2 construction, the sound attenuation/isolation has two separate and distinct classes of sound insulation: -
- Airborne sound transmission (voices/sound equipment from adjoining units)
- Impact sound transmission (the sound of footsteps from adjoining units)
The bca 2007, requires a minimum sound isolation floor airborne sound to be: -
- Weighted sound reduction index + spectrum adaptation term
(rw + ctr) ≤ 50
The bca 2007, requires a minimum sound isolation floor impact sound to be: -
- Weighted normalised impact sound pressure + spectrum adaptation (ln,w +ci) ≤ 62
The Ezidek suspended floor system has been independently field/measured/tested in completed construction to satisfy the ‘above’ provisions of the bca 2007,
A copy of the independent test report may be forwarded on application.
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