Approved report

4 C D Developments
Environmental Traffic and Rail Noise Level Impact Assessment for Proposed Residential Unit Development,
54 Elm Street and 5 Pearl Street, Cooroy                                                                    Page 14 of 35



Rail Noise – Internal Areas

The noise limits for the internal areas are relative to the requirements of the Queensland Development
Code. In accordance with the Queensland Development Code, namely MP4.4, the following road traffic
and rail noise categories are described (for the control of road traffic and rail noise to habitable rooms):

                                                Level of transport noise
                                             (LA10,18H) for State controlled     Single event maximum noise
               Noise Category
                                              roads and designated local            (LAmax) for railway land
                                                   government roads
                 Category 4                           ≥ 73 dB(A)                          ≥ 85 dB(A)
                 Category 3                         68 – 72 dB(A)                        80 – 84 dB(A)
                 Category 2                         63 – 67 dB(A)                        75 – 79 dB(A)
                 Category 1                         58 – 62 dB(A)                        70 – 74 dB(A)
                 Category 0                           ≤ 57 dB(A)                          ≤ 69 dB(A)

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.

Refer Noise Control section of this report for details of the different residential facades and their
associated Noise Category to control rial noise to habitable rooms.




David Moore & Associates Pty Ltd                                                Our reference: R21046/D3569/Rev.0/2.07.21