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Meet our noise expert

10 Feb 2016



Meet our noise expert

[Title: Level Crossing Removal Project]

[Vision: Level Crossing Removal Project: Caulfield to Dandenong Acoustics]

Adrian - Acoustic Consultant

My name's Adrian, and I'm responsible for assessing the noise impacts associated with the project. Modelling and assessing noise levels when we're designing projects like this, allow us to minimise the impacts from the project on the surrounding community.

[Vision: Adrian discussing plan with team member]

So the proposed design looks to elevate the rail structure.

[Vision: Map showing three sections of elevated rail]

And, when that happens noise is going to change how it propagates in the area.

[Vision: Artist's impression of elevated rail line and community areas underneath]

Noise from elevated structures really is a result of two main interactions. One's the interaction of the wheel and the track itself. And, the other one is that the structure can vibrate as the train travels along it.

[Adrian speaking - Artist's impression of elevated rail line at level crossing location]

Our assessment has considered both of those factors, and over all we've predicted that the noise in the corridor is going to be reduced from what the existing situation is.

[Vision: Artist's impression of Clayton Station - Adrian speaking]

So preliminary modelling has considered noise from both the trains moving along the track and from the structure vibrating as the train travels at high level.

[Vision: Artist's impression of railway station - Drawing of noise disbursement from elevated track]

The preliminary modelling that we've completed to date has shown us that, in the majority of areas, the airborne noise from the trains moving along the track is actually predicted to be quieter than the existing situation of the track sitting on the ground.

[Vision: Artist's impression of bus interchange and Clayton Station]

In addition to that, the noise radiating off the structure or from the structure vibrating is predicted to be at very low levels, and probably lower than typical noise in the area due to other sources.

[Vision: Adrian discussing plans with team member]

As the design progresses and gets more and more refined, we're going to continue to assess the noise impacts on the surround community, and look for ways to minimise that impact as far as possible.

[Adrian speaking - paperwork]

So that's going to be introducing all these types of best practice noise mitigation measures, and seeing where they'll be of benefit and where we can continue to reduce that noise impact.

Vision: Artist's aerial impression of Noble Park Station]

There's a number of features that we can implement into the designs to minimise noise impacts on the community.

[Vision: Artist's impression of Noble Park Station and surrounding open space]

Some of those design features include the actual structure itself and how we design that, and, the footings and the fixings associated with it.

[Adrian speaking]

The track itself, so having good quality track that's nice and smooth.

[Vision: Artist's impression of Clayton Station and surrounding]

How we fix the track onto the structure, so if we use resilient fixings or soft rubbery interlayers, that can help reduce noise.

[Adrian speaking]

And then there's other features such as noise walls that could be installed in order to protect communities and to minimise that noise transfer.

[Vision: Adrian discussing plans with team member]

I really enjoy working on large scale infrastructure projects where noise is a major consideration. And, it's good to be part of that design team, where there's a number of considerations coming into play.

[Vision: Artist's impression overhead rail line, new stations, open spaces]

But, you're responsible for making sure that overall the design minimises its noise impacts on the surrounding community.

[Level Crossing Removal Project - Victoria State Government]

[Speaker: Authorised by the Victorian Government, 1 Treasury Place, Melbourne]

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