The principal focus of acoustic contamination tends to be traffic and this therefore is the perturbing agent to combat. The most effective way to do so is to intersperse constructive elements between the receptor and the perturbing agent, creating an area of shade where the noise level is lower; these elements are the so-called Noise Barriers.
The barriers, as well as being effective as an acoustic barrier, must comply with a series of constructive characteristics that ensure their mechanical behaviour, their general security and their correct adaptation to the environment.
The sum of two noises with a difference of 10 or more decibels equals the loudest noise level. Therefore, to avoid the noise passing through the screen adding to the diffracted noise, the screen must have an insulation system at least 10 dB higher than the attenuation through diffraction.
Characteristics
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The panels are formed by two sheets of tongue and groove Pinus sylvestris wood, with air chamber full of insulating material.
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The joining columns between panels are made of wood with variable section depending on height and location. They are embedded in concrete foundations (the treated wood resists this perfectly). They can also be metallic if the circumstances so require it.
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The size of the panels will be calculated for each case. This enables easy handling and the ability to resolve without the need for extensive resources their siting in even the most inaccessible places, with less installation costs.
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The lower end can be embedded in the ground, and a greater integration with the environment is thereby achieved.
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They are supplied with a finish of open pore varnish which serves as solar protection for the colour. One layer of priming would be sufficient for it to be preserved in perfect condition for between 4 and 7 years. There are colours to choose from: teak, oak, walnut.
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The timber squares, the absence of protruding edges and the use of an acoustic insulator that exhibits behaviour classified as MO (non-flammable) in the event of fire, all serve to ensure the barriers have an excellent reaction to fire, which in the initial stages may serve as a containment barrier.
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Advantages
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Acoustics: The maximum classifications in insulation and absorption are achieved.
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Aesthetics: Using quality wood they are attractive and their integration within the surroundings is unbeatable.
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Ease of handling and repair.
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Variety and infinity of designs and possibility of combining with screens of other materials, above all with polycarbonates.
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Competitive price and low maintenance cost.
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Technical assistance and advice.
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Writing of reports and measurment of acoustic contamination.
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The trials carried out in the Laboratory certify the excellent acoustic insulation qualities of the Amatex Wood Screens, achieving the maximum qualifications according to regulation UNE-EN 1793-2: 1997.
Indices achieved in official trials:
PANEL |
INSULATION
DLR(dB) |
Categories Insulation Behaviour |
ABSORPTION |
Categories Absorption Behaviour |
PAi-25/19 |
27 |
B3 |
1 |
A1 |
PAi-32/25 |
31 |
B3 |
- |
- |
PAi-5X3/19 |
20 |
B2 |
9 |
A3 |
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