Appendix L - Acoustic Report · MCU21/0146

6     RECOMMENDATIONS – BUILDING SHELL AND EXTERNAL GLAZING

Impact from shopping center and loading dock areas have been addressed in a previous noise impact
assessment report (ref: 20191414.3/0607A/R7/OB), dated 6 July 2021). The recommendations in this report
are based on the assumption that the Shopping center achieves compliance as per Mediation Judgement.
Further, AL has been advised by Stockwell that loading dock impacts will be treated utilizing Acoustic Barriers
and operational controls measures as listed in the abovementioned report.

6.1    GLAZING

The glazing systems should be selected and installed to meet the noise criteria presented in this report.

Minimum requirements are presented to satisfy only the acoustic requirements for the façade and glazing
based on the current assessment methods. Where other requirements for the façade and glazing are
specified elsewhere in the glazing specification, the glazing shall be selected to meet all requirements and
may result in increased glass thicknesses over those specified in the acoustic specification but shall in no
cases fall below the minimum thicknesses and requirements set out in this specification.

The design of the window mullions, perimeter seals of openable and fixed glazing, and the installation of
the windows/doors in the building openings shall be selected so that the completed system reduces internal
noise levels to at or below the requirements in the abovementioned report and in any case shall meet or
exceed the minimum acceptable glazing requirements nominated below.

Thicker glazing may be required for structural, safety or other purposes. Where required to use thicker
glazing than that scheduled, this will also be acoustically acceptable.

It is recommended that only window systems having test results indicating compliance with the required
ratings obtained in a certified laboratory be used. The submitted glazing system acoustic performance and
thickness deviations from the requirements in this brief are to be approved by the acoustic consultant.

Refer to Appendix A for Glazing types. It is noted that the Type B has been applied for the Shopping
Centre side due to the likelihood of having limited acoustic treatments applied at the source (i.e. Noosa Civic
Plant). On the condition that the acoustic treatments in section 8 are fully implemented to achieve
compliance with the Mediation Judgement No. 765 of 2020 (dated 3 September 2020), the Type B
glazing facing the shopping centre) can be downgraded to Type C glazing systems with acoustic seals.

                            Table 11 – Minimum Installed Glazing Requirements


                                                                                     Minimum Acoustic
                                Examples of Typical Minimum
         Glazing                                                                  Performance (all must be
                                     Glazing Thickness
                                                                                       complied with)

                                                                                    Refer to following Table
                                                                                             And
          Type A                   10.38mm thick laminated glass
                                                                                   Type A minimum acoustic
                                                                                      performance: Rw35
                                                                                             And
                                                                                   Type B minimum acoustic
                                                                                      performance: Rw32
          Type B                   6.38mm thick laminated glass
                                                                                             And




 I:\Jobs\2021\20210208\20210208.3\20210816JJMA_R3_Development_Application_.docx                                26