Noise Report [As Published] · 132007.2398

RSL Care ==

Proposed RSL Retirement Village, Cooroy — Road and Rail Noise Assessment

 

5.3 RAIL NOISE MITIGATION

5.3.1 2.5 m Acoustic Barrier

Further noise calculations have been completed to determine the effectiveness of 2.5 m
acoustic barrier, as identified on Figure 4. The 2.5 m acoustic barrier is suitable for providing
attenuation for both road traffic noise (as discussed in Section 4.6) and rail noise.

Table 5.2 identifies the noise levels at various setback distances from the boundary of the
development site using a 2.5 m acoustic barrier.

TABLE 5.2: MAXIMUM FACADE-CORRECTED NOISE LEVELS AT THE DEVELOPMENT
SITE BOUNDARY WITH 2.5 m ACOUSTIC BARRIER (dB(A))

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Receptor Lamax Noise Level dB(A) Fagade-Corrected'
Ground Floor ILUs
1m setback from boundary 86.6
10 m setback from boundary 85.5
20 m setback from boundary 85.0
30 m setback from boundary 84.7
40 m setback from boundary 84.3
50 m setback from boundary 84.1
60 m setback from boundary 83.9
Apartment 2
Ground Floor 85.4
First Floor 90.2
| Aged Care Facility
Ground Floor 83.6
First Floor 87.3

 

 

* Levels shown in bold represent exceedences of the appropriate noise criteria (57 dB(A) free field).

As identified on Table 5.2, noise levels are predicted to comply with the noise criterion for
ground floor levels only. Limited attenuation is predicted for first floors due to their elevation
above the top of the 2.5 m acoustic barrier. First floor noise levels at the Apartment 2 adjacent
to the Cooroy Connection road are predicted to exceed the Lamax Criterion by up to 3.2 dB(A).

5.3.2 Construction Requirements

As discussed in the previous section, exceedance of the 87 dB(A) Lamax criterion is predicted
for the first floor facades of Apartment 2 facing the Cooroy railway line. In order to achieve an
internal Lamax noise criterion of 50 dB(A), appropriate construction materials must be
implemented into the building design.

Table 5.3 provides the attenuation required for potential construction materials. Table 5.4
identifies potential construction materials that could achieve the required attenuation.

 

AIR NOISE ENVIRONMENT PTY LTD
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