MCU16/0079 Appendix F - Environmental Noise Imact Assessment

6.2      Amplified Entertainment Acoustic Treatment Recommendations
We recommend that the following acoustic treatments be incorporated into the development to
mitigate onsite amplified entertainment at the new function / dining area of the RSL building:

   Amplified music and live entertainment should not be played at outdoor areas unless an
    additional amplified music assessment is undertaken.

   Areas where amplified entertainment is proposed should have sound limiters installed to ensure
    that noise levels inside the performance space do not exceed a level of 91 dB(C) measured at 3m
    from the speaker when all external doors and windows are kept closed; and 71 dB(C) measured
    at 3m from the speaker when doors and windows are open. The determined allowable noise
    levels are predictions only. It is critical that upon detailed design, further review of building
    shell treatments be conducted to further refine the treatments assumed in this assessment.

   Certification measurements should be undertaken to ensure compliance with the criterion can be
    achieved, once the building extensions are completed.

   All amplification of sound is operated through the in-house sound system to ensure that the
    sound limiting device controls overall sound output.

   A minimum Rw 34 (i.e. 10.76mm laminate in acoustic grade frames and acoustic seals) should be
    used for all new external windows and glass doors of the function / dining extension, children’s
    lounge and the new alfresco lounge.

   New external walls of areas where amplified entertainment is proposed should be constructed to
    achieve a minimum Rw rating of 50.

   Roof / ceiling of areas where amplified entertainment is proposed should be constructed to
    achieve a minimum Rw rating of 50.

   Areas where amplified entertainment is proposed should be air-conditioned or have sealed
    mechanical ventilation to provide fresh air ventilation when external doors / windows are closed.




                                              Page 17