3.7 The Australian Association of Acoustic Consultants | Owners Corporation Network

3.7 The Australian Association of Acoustic Consultants

The Association of Australian Acoustical Consultants (AAAC) has published an excellent star rating guideline that provides information on appropriate acceptability standards for buildings of different quality. For example, if you consider your building to be a five star building then the acceptability standard is for impact noise transmission not greater than (L’nT,w = 45dB).

“Many noises contain pronounced tonal or impulsive characteristics, which increase their annoyance. Such noises need to have a penalty adjustment (adj) to account for the annoying characteristics. If these characteristics are clearly audible a 5dB(A) penalty shall be applied. If the characteristics are just audible then a 2dB(A) penalty shall be applied”

Association of Australian Acoustical Consultants Guideline for Apartment and Townhouse Acoustic Rating (September 2010), pg 9.

They are a much better guide to what it tolerable and what isn’t. It is imprtant to understand that the level of noise is the only factor. A dripping tap is not particularly noisy but it will drive you mad if you don’t stop it. A child playing with marbles on the floor above your lounge will have you going mad in no time.

Intertenancy Activities

2 Star

3 Star

4 Star

5 Star

6 Star

(a) Airborne Sound Insulation For Walls & Floors

35

40

45

50

55

Between Separate Tenancies DnT,w+ Ctr >

30

40

40

45

50

Between A Lobby/Corridor & Bedroom DnT,w + Ctr >

25

40

40

40

45

Between A Lobby/Corridor & Living Area DnT,w + Ctr >

20

25

30

35

40

(b) Corridor, Foyer To Living Space Via Door(s) DnT,w >

65

55

50

45

40

(c) Impact Isolation Of Floors

 

 

 

 

 

Between Tenancies LnT,w <

65

55

50

45

40

Between All Other Spaces & Tenancies LnT,w <

65

55

50

45

40

(d) Impact Isolation Of Walls

 

 

 

 

 

Between Tenancies

No

Yes

Yes

Yes

Yes

Between Common Areas & Tenancies

No

No

No

Yes

Yes

Source: Association of Australian Acoustical Consultants Guideline for Apartment and Townhouse Acoustic Rating (September 2010), pg 9.