Click on image to magnify
© Harish Jharia
The above photo was clicked while going on-road from Ashburn
to Denville in September 2011. This is a
photograph of one of the acoustic walls constructed along the high traffic
roads for protecting residents against noise pollution.
What are Acoustic Noise Barriers?
Noise barriers are solid obstructions built between the roads
and the residential houses along highways. They do not completely block noises;
nevertheless, they reduce overall noise levels. Ideal noise barriers may reduce
noise levels by 5 to 10 decibels (dB), reducing the loudness of traffic noise
by almost half. For example, a barrier designed for a 10-dB reduction can
reduce sound level of a typical tractor trailer equivalent to an automobile
like car or SUV.
Acoustic noise barriers are made of different materials viz
cement, wood or specific synthetic materials. Their thickness (usually 6-8 in) and
height (usually 15 ft) are designed according to the traffic and
geo-environmental conditions.
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Thank you for sharing such information about Acoustic Barriers . This kind of blog is really helping to build a noise-free environment.
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