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The Road Directorate Screens​

Type 1A - Transparent screen

Noise-screen type 1A is a transparent noise screen designed to withstand the harsh environment of the road. The screen is typically set up along highways and expressways in urban areas and can be used advantageously along stretches of road where the road's neighbours set requirements for view and lighting. The screen type can be used at an actual screen height of up to 4.0 meters.

The noise-screen structure

The screen type is carried out with prefabricated concrete blocks mounted on foundations designed by the contractor. The concrete blocks are made with modular distances which are divisible by 0.70 meters, for example. 3.50 meters or 4.90 meters.

Vertical rectangular aluminium columns with a modular spacing of 700 mm are mounted on the concrete blocks. The columns are mounted to the concrete blocks with 2 pieces. M16 bolts/threaded bars with a fixed spacing of 500 mm. Between the vertical columns, transparent noise screen cassettes are attached.

The transparent noise screen cassettes are designed in such a dimension and thickness that they can withstand the wind pressure and climate impacts with the determined module distance, and so that the acoustic requirements for the overall noise screen are complied with.

Type 2A - Transparent screen with slats​

Noise screen type 2A is a transparent noise screen designed to withstand the harsh environment of the road. The screen is typically set up along highways, expressways and major roads in rural and urban areas. The screen type can advantageously be used where the road's overview conditions require visibility or where the road's neighbours place special requirements for view and lighting. A mix between noise screen type 2A and 2B is possible.

Noise shield on land

The screen type is made with HEB bearing steel columns, or HEA profiles and mounted per 5.0 meters on foundations, except for the ends where the module width is 3.0 m.

On the pillars, footplates are welded, which are mounted to the underlying foundations by groups of bolts. The footplate and bolts assembly is established under the terrain.

Between the steel columns, a prefabricated concrete block followed by transparent elements is mounted. On the pre-established noise screen, slats are mounted on respectively the road and neighbour side.​

Noise screen on construction work

The screen type is made with HEB bearing steel columns, or HEA profiles and mounted per 3.0 meters on mounting brackets designed by the contractor. Transparent elements are mounted between the steel columns. On this screen type, slats are mounted on respectively road and neighbour side on the pre-established noise screen.​

 

Type 2B - Sound absorbing screen with slats​

Noise screen type 2B is a closed sound-absorbing noise screen designed to withstand the harsh environment of the road. The screen is typically set up along highways, expressways and major roads in rural and urban areas.

Noise shield on land

The screen type is made with HEB bearing steel columns, or HEA profiles and mounted per 5.0 meters on foundations, except for the ends where the module width is 3.0 m. On the pillars, footplates are welded, which are mounted to the underlying foundations by groups of bolts. The footplate and bolts assembly are established under terrain. Between the steel columns, a prefabricated concrete block followed by closed sound absorbing screen cassettes, is mounted. On the pre-established noise screen, slats are mounted on respectively the road and neighbour side.


Noise screen on construction work

The screen type is made with HEB bearing steel columns, or HEA profiles and mounted per 3.0 meters on mounting brackets designed by the contractor. Closed sound absorbing noise screen cassettes are mounted between the steel columns.

On this screen type, slats are mounted on respectively road and neighbour side on the pre-established noise screen.​