Appendix F- Acousitc Report · MCU21/0117.01

Cooroy Villas Pty Ltd
Environmental Traffic and Rail Noise Level Impact Assessment for Proposed Residential Unit Development,
54 Elm Street and 5 Pearl Street, Cooroy                                                                       Page 20 of 36



For the different Noise Categories the required minimum transport noise reduction required for habitable
rooms is as follows:

    •    Category 4:           40 dB(A);

    •    Category 3:           35 dB(A);

    •    Category 2:           30 dB(A);

    •    Category 1:           25 dB(A);

    •    Category 0:           No additional acoustic treatment required – standard building assessment
                               provisions apply.

At the closest facade of the proposed residential units to the railway line the facade corrected rail noise
level is 77.7 + 0.6 = 78.3 dB(A) maximum, which is equivalent to Noise Category 2. For ultimate traffic
noise at the closest façade of the proposed residential units to Elm Street the facade corrected traffic
noise level is 66 dB(A) LA10,18H, which is also Noise Category 2. Therefore compliance with the traffic
noise criteria for habitable rooms will also result in compliance with the rail noise limits for habitable
rooms – Table 10 refers.

                                                      Table 10
  Traffic and Rail Noise Category For Proposed Residential Units, Level 1 and Level 2, With Acoustic Barriers in Place

                                   Level 1 Noise Category                             Level 2 Noise Category
        Unit
                        West         North        East        South         West         North        East        South

         1               1             1          N/A            1            2            2          N/A           2
         2              N/A            1          N/A            1          N/A            2          N/A           2
         3              N/A            1          N/A            1          N/A            2          N/A           2
         4              N/A            1          N/A            0          N/A            2          N/A           2
         5              N/A            0          N/A            0          N/A            1          N/A           1
         6              N/A            0          N/A            0          N/A            1          N/A           1
         7              N/A            0          N/A            0          N/A            1          N/A           1
         8              N/A            0          N/A            0          N/A            1          N/A           1
         9               1             0          N/A            1            1            1          N/A           1
        10              N/A            0          N/A            0          N/A            1          N/A           1
        11              N/A            0          N/A            0          N/A            1          N/A           1
        12              N/A            0           0             0          N/A            1              0         1


In accordance with MP4.4 the following minimum Rw values are applicable for each for the above
nominated noise categories, for habitable rooms only:

    •    Category 0:           no additional acoustic treatment, standard building assessment provisions
                               apply;

    •    Category 1:           Glazing:        Rw 24 for glazing with up to and equal to 1.8m2;
                                               Rw 27 for glazing greater than 1.8m2;
                               External walls: Rw 35;
                               Roof:           Rw 35;
                               Entry Doors:    Rw 28;




David Moore & Associates Pty Ltd                                          Our reference: R23089.docx/D3819/Rev.0/17.01.24