Acoustic Comfort

10 Credits And 3 Points Available

Our diverse team of Professionals include, Architects, Engineers and ESD Specialists. We have been around long enough to work on all possible project types. See our Past Projects. With 17+ Years of experience in ESD Consulting, you will be well served as our team goes through 100's Section J reports every year. Please reach out, we would love to work with you on your next important project. All our work is completed in Australia on time from our local reliable NSW Sydney office.

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Aim of the credit

To reward projects that provide appropriate and comfortable acoustic conditions for occupants.

Credit criteria

10.1  Internal Noise Levels - 1 point is available where internal ambient noise levels in the nominated area are suitable and relevant to the activity type in the room. This includes all sound generated by the building systems and any external noise ingress. 10.2  Reverberation - 1 point is available where the nominated area has been built to reduce the persistence of sound to a level suitable to the activities in the space. 10.3  Acoustic Separation - 1 point is available where the nominated enclosed spaces have been built to minimise crosstalk between rooms, and between rooms and open areas.

 

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17+ Years Experience In ESD

Our diverse team of Professionals include, Architects, Engineers and ESD Specialists. We have been around long enough to work on all possible project types. See our Past Projects. Deemed to satisfy as our team goes through 100's Section J reports every year.

Indoor Environment quality

By rewarding both energy efficiency and encouraging occupant well-being, the Green Star rating system promotes and rewards a holistic approach to sustainability that results in multiple benefits. Such benefits would include: Reductions to occupant stress, Improvements to air quality through appropriate ventilation, the provision of high levels of thermal, visual and acoustic comfort and also reduced exposure to pollutants.

 

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One (1) point is awarded where project teams demonstrate that internal ambient noise levels in the nominated area are no more than 5dB(A) above the lower figure.

The noise measurement and documentation must be provided by a qualified acoustic consultant and in accordance with AS/NZS 2107:2016. Noise measurement must account for all internal and external noise including noise arising from building services equipment, noise emission from outdoor sources such as traffic, and (where known) noise from industrial process. Occupancy noise is excluded.

Compliance shall be demonstrated through measurement, and the measurements shall be conducted in at least 10% of the spaces in the nominated area. The selection of representative spaces must be justified within the Submission Template and must consider how the spaces are considered to be the most conservative with respect to both internal, and external noise sources.

The range of measurement locations shall be representative of all spaces available within the nominated area. All relevant building systems must be in operation at the time of measurement. Projects less than 500m2 Gross Floor Area (GFA) must account for measurements conducted in at least 95% of spaces within the nominated area.

Provisions for Naturally Ventilated Buildings

In naturally ventilated buildings, all measurements must be carried out with natural ventilation openings in the open position. The internal ambient noise levels must be no more than 10dB(A) above the lower figure.

Provisions for Mixed Mode Buildings
For purposes of this credit, mixed mode buildings can be treated as mechanically ventilated.

One (1) point is awarded where the reverberation time in the nominated area is below the maximum stated in the ‘Recommended Reverberation Time’. Reverberation refers to the persistent prolonged reflections of sound in a space. For residential projects, this criterion is ‘Not Applicable’.

The resulting performance of the installed acoustic absorption, irrespective of quantity or location installed, must result in a reverberation time equivalent to or lower than the reverberation time predicted for treating at least 50% of the combined floor and ceiling area with a material having a noise reduction coefficient (NRC) of at least 0.5.

Alternatively, compliance may be demonstrated by treating 50% of the combined floor and ceiling area with a material having a NRC of at least 0.5.

Dedicated teaching space must have reverberation times in the lower half of the range specified.

Compliance shall be demonstrated through measurement, and the measurements shall be conducted in at least 10% of the spaces in the nominated area. The selection of representative spaces must be justified within the Submission Template and must consider how the spaces are considered to be the most conservative.

The range of measurement locations shall be representative of all spaces available within the nominated area. All relevant buildings systems must be in operation at the time of measurement. Projects less than 500m2 Gross Floor Area (GFA) must account for measurements conducted in at least 95% of spaces within the nominated area.

One (1) point is awarded where the project addresses noise transmission in enclosed spaces within the nominated area. Enclosed space is defined as meeting rooms, private offices, classrooms, residential apartments (bounding apartment construction), and any other similar space where it is expected that noise should not carry over from one space to the next. For this specific criterion, where the delivery method of the project is core and shell, then the criteria may be considered ‘Not Applicable’.

There are three methods for demonstrating compliance with this criterion. All are shown in the table below.
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