Our association has just installed a noise barrier 2m by 300m (23cm thick concrete blocks with millstone facing), but we have not noticed any reduction in noise. Was 2m high enough? Do you have any recommendations?

Complete question :

Hello, we have just been built a noise barrier 2 m high by 300 m in parpains 23 cm thick including a millstone facing this wall is supposed to protect pavilions on the edge of the NATIONALE 10 to 78 TRAPPES borrowed every day by 80,000 vehicles, 40% of which are heavy goods vehicles We have not noticed any reduction in noise. The public authorities say yes, for us, 2 m high is not enough. What do you think?

6 answers

The 09/08/2021

In fact, it is quite probable that this is insufficient.

The only good method is to have a real acoustic study done by recognized professionals.

Avoid material vendors

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The 09/08/2021

hello

not enough with naturawall green & durable noise barriers

we ask for an acoustic simulation via local acousticians..

It is possible to correct this error if the authorities agree???

Our German BE, who has already had more than 350 walls installed, can help graciously

but we need acoustic measurement plans etc...

Please let us know if there is an option for short term improvement?

cdlt

Francis Meister IT Grenoble

www.naturawall.fr ref Paris A480 Grenoble...

www.international-trade.fr under construction by my son...

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The 09/08/2021

Hello,

The height of 2 m for the screen would be sufficient if it is very close to the origin of the noise. otherwise it is useless. To know the incidence of protection, draw a straight line from the origin of the noise passing just above the noise barrier and you will see if you are protected

www.gabions.fr gives a lot of information in the noise barrier section

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The 09/08/2021

Translator

Answer ditto Serial - Indeed it is quite likely that this is insufficient

The only good method is to have a real acoustic study done by recognized professionals (like Venathec :) for example).

Absolutely avoid materials vendors!

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The 09/10/2021

Without the technical elements: noise source, target, distance, acoustic measurements, impossible to answer the question... You don't notice any variation, but what does the sound level meter say? What was the objective? It is impossible to answer this question without carrying out a study.

Who was the contracting authority, the DDTM? I imagine that they had to do the study and the dimensioning of the wall. The study must be available. It is then enough to compare the provisional acoustic note and the reality to see if everything is in conformity.

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The 09/08/2021

Hello, unable to download your contact, please send me an email

MICE mr Quennoy 0607564514 mice-france@micesa.be

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Posted on : Wednesday 8 September 2021