07/2398 - Request for information response [As Published] · 132007.2398

Table 8.1 Proposed Minimum Construction for Development

 

Building

 

 

 

 

 

 

Element Proposed Construction Rw
External Wall | Brick with internal layer of plasterboard 45
Windows 3mm float glass 23
Sliding Doors | 4mm toughened float glass 23
Tiled roof with |Omm plasterboard and R2.5 glasswool; or
Colorbond roof with 50mm Anticon, |Omm plasterboard and R2.5 40
glasswool (applicable to all units, except 49 and 50)
Rooficeiling Tiled roof with 2 layers of 10mm plasterboard and R2.5 glasswool;
or
43

 

Colorbond roof with 50mm Anticon, 2 layers of !Omm
plasterboard and R2.5 glasswool (applicable to units 49 and 50 only)

 

 

 

To meet the internal noise limits for both road traffic and rail traffic, additional window thicknesses are

required. The units concerned are shown in Appendix A. This appendix also shows the’ window™ —

requirements to meet the internal noise levels, assuming the external wall and roof/ceiling materials
shown in Table 8.1.

9 Conclusion

The noise impact due to road and rail traffic has been assessed. The DMR external noise limit of
Lio(l8hour) 60 dB(A) could not be met at all residential facades, due to the nature of the
topography. As a result the external L10(1 8hour) noise limit is predicted to be exceeded at units I5-
29, 31-33, 36, 37 and 39. Therefore the internal noise limits according to AS2107 are to be met.

The external Lmax and Leq(24hour) railway noise limits are predicted to be met at all residential
facades from noise emitted by passing trains.

To meet the internal noise limits for both road and rail traffic, the window Rw's shown in Appendix

-A are required. The Rw’s are based on construction details as per Table 8.1.

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