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Marshall Day Acoustics was acoustic consultant on
the recently opened Britomat project. Britomart is a transport,
heritage and urban renewal project, located on 5.2 hectares of
reclaimed land in Auckland 's central business district. It is the
largest infrastructure project ever undertaken by a local authority in
New Zealand , at a total cost of $204 million.
Britomart is a transport centre linking train, bus
and ferry services and is an important component in developing Auckland
's passenger transport network. Marshall Day Acoustics was engaged to
advise on the noise control within the new train station at the hub of
the Britomart. There were numerous acoustical challenges to overcome
including controlling noise both from the diesel electric trains in an
enclosed environment and from the massive ventilation system required
to exhaust engine fumes. In addition, a high standard of speech clarity
was also required for the Public Address system.
In order to address this brief, Marshall Day
Acoustics conducted Odeon modelling of the space to test the effects of
ceiling absorption on both the reverberant noise level and the PA
system. The modelling resulted in a detailed specification for acoustic
absorption which is protected by a Mylar wrapping in order to protect
it from the diesel fumes.
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