Environmental Report (Acoustic)

    Noosa Fair Redevelopment – Lanyana Way, Noosa Heads

© 2013 - TTM Consulting Pty Ltd                                                         Reference No: 12BRA0197 R01_1
                                                                                                         acoustic report
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    Includes 2 dB(A) adjustment to account for impulsiveness characteristics in accordance with AS1055.

*includes 5 dB(A) adjustment to account for tonal noise characteristics in accordance with AS1055.


5.2.2        Parameters for typical usage
The following parameters were used for noise calculations:
       a) Car movements are predicted from the nearest car parking areas. Calculations are based
          on a peak hour traffic generation rate of approximately 422 vehicles per hour as
          determined in the TTM traffic engineering assessment;
       b) Car door closures are predicted from the nearest relevant car parking area. Noise
          predictions allow for 2 car door closures for each vehicle movement;
       c) Car engine starts are predicted from the nearest relevant car parking area. Noise
          predictions allow for 1 engine start per vehicle movement;
       d) Voices (conversation) are predicted from the nearest alfresco area. Calculations are based
          on voice conversations occurring 50% of the time;
       e) Truck movements and reverse alarms are predicted from the nearest relevant location
          within the site (i.e. access areas or loading bays). Calculations are based on 10 heavy
          vehicle deliveries in any 1 hour period;
       f)   Waste bin lid slamming predicted from the nearest refuse area. Calculations are based on
            10 events occurring in any 1 hour period. A similar noise source level could also be
            expected for sources such as dropping glass rubbish into the bins;
       g) Waste collection is predicted from the loading zones. Calculations are based on 2 events
          in any 1 hour period;
       h) Noise sources predicted from the nearest and worst case location in relation to the
          receivers. It is expected that the noise source may not always occur at these worst case
          positions.

Noise levels for voice are based on published data contained in Harris CM, Handbook of Acoustical
Measurements and Noise Control – 3rd ed. Ch 16.3, Mc Graw-Hill Inc. The average A-Weighted
Sound Levels (long term averages) of speech for different individual vocal efforts under quiet
conditions at a distance of 1 metre are as follows:

Table 10: Voice Noise Levels

            Vocal Effort               Male dB(A)           Female dB(A)

              Casual                        53                    50

              Normal                        58                    55

              Raised                        65                    62

               Loud                         75                    71

The voice levels used for assessment are from the 'Loud' category with an associated noise level
of 75 dB(A).

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