Environmental_Acoustic Report

 Noosa Fair Redevelopment – Lanyana Way, Noosa Heads

© 2013 - TTM Consulting Pty Ltd                                                              Reference No: 13GCA0108 R02_2.docx


7.3        Noise Model

7.3.1      Noise Modelling Parameters
Road traffic noise predictions were conducted using SoundPLAN, a CoRTN based noise modelling
program. The basis of the SoundPLAN model was as follows:

           Noosa Drive Speed Limit:                      60km/h
           Noise Source Height above grade:              0.5m
           Assumed Ground Floor Pad Level:               21.00m AHD
           Floor Receiver Height:                        1.8m above assumed floor level
           Floor Height:                                 3.0m
           Façade Correction:                            +2.5 dB(A)


The road heights for Noosa Drive were obtained from existing site surveys and interpretation of
Google Earth.


7.3.2      Noise Model Verification
To verify the road traffic noise model, the LA10,18hour noise level at the monitoring position is
calculated (using SoundPLAN) and compared to the measured level as presented in Table 27. The
noise monitor was in a free-field location and therefore the predicted level is shown as free-field.


Table 27: Comparison of Measured and Predicted Road Traffic Noise Levels

      Measured LA10,18Hour              Predicted LA10,18Hour         Required Correction
              64.0                              64.1                             0

The CoRTN methodology allows a maximum deviation of 2dB(A) from measured levels. As the
modelled levels are within the allowable tolerance of 2dB(A) of the measured levels, no
correction was applied.




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