How do we investigate noise nuisance? What are sound-screens? What are green walls?
They carry out an inventory of the current acoustic situation on the basis of measurements taken by local residents. They also create a model of the future situation.
The simulations of the future situation take the following into account:
Green walls involve several prefabricated elements being stacked on top of one another (a type of concrete container). These elements are then filled with earth so that plants can grow in them. The elements are useful because they are resistant to graffiti, can be covered in greenery and can be used as supporting walls. They also offer excellent acoustic insulation as a result of their mass.
Sound screens form a barrier between the source of noise and the recipient (local resident, school, business). These reflective screens substantially reduce noise pollution.
At particular locations, we must increase the efficiency of the noise-reducing measures by employing noise absorption systems. As a result, we avoid the reflected noise causing problems elsewhere.
Sound absorption is achieved by the use of concrete which contains wood or mineral wool (located in a metal, plastic or wooden structure). The mineral wool is located behind a perforated plate that allows sound to pass through so that it can be absorbed by the wool. The entire structure is contained in a hard formwork that we can secure to an existing concrete wall or which can be slid between poles.