Noise Barrier WHIS®Top

The WHIS®top is a lightweight aluminum traffic noise diffractor, that can be mounted onto any (existing) noise barrier to deflect sound upwards. The WHIS®top adds a 4 to 5 dB noise reduction, comparable to raising the existing barrier 2 meters.

$WHIS topp, a traffic noise diffractor, installed on an existing barrier at an overpass for better noise reduction.$ $WHIS topp - a traffic noise diffractor.$ $WHIS topp, a traffic noise diffractor, installed on an existing barrier for better noise reduction.$ $The WHIS®wall combines a low noise barrier with a corten steel diffractor, reducing traffic noise with 7-9 dB.$

Product Characteristics

The WHIS®top improves reduction from existing noise barriers without radical measures.

With the WHIS®top, any new noise barrier can be lowered by 2 meters. That means lower noise barriers and lighter construction.

Building lower makes you more cost-effective, with fewer materials, lighter construction, and reduced wind load.

Because of its high reduction and preservation of views, the WHIS®top receives a lot of support from residents.

Extra reduction in existing situations
Lower constructions
Cost-effective
Widely supported by residents

Technical specifications

No standard dimensions, custom work
Height: 0.20 meter
Reduction: 4 to 5dB
Weight ca. 40 – 100kg / meter
Combine with concrete barrier for crash protection

Material properties

Available in: Corten steel, aluminum, galvanized or coated

Noise Level Field Test

Notice the increase in noise level when the car has passed the WHIS@Top. The noise barrier ends in the center of the recorded footage.

Product Applications

The WHIS®top is suitable for various kinds of infrastructure where traffic noise is a problem.

Railroads
Linkroads
Country roads
Distributor roads
Highways

Technical Specifications

$Diffraction of sound illustrated by the red and white arrows in this image.$

WHIS-topp-technical-specificationswhis-topp-technical-specifications.xlsx

Properties

Dimensions:	No standard, custom to your project
Height:	0,2m
Reduction:	4 to 5 dB
Weight:	ca 40 - 100 kg / meter

Installation

Mounted onto existing noise barrier

Linking barrier and WHIS®top is custom work

No changes to existing noise barrier required

Downloads

TNO report – TNO+2021+R10471 english

Contact us

Vibratec contact for sales

Svante Hägerstrand

CEO

+46 176 20 78 84

Vibratec contact for sales

Anders Olsen

Group Technical Director & General Manager Denmark

+45 49 13 22 44

Vibratec contact, head of sales

Kjetil Vedholm

Technical Sales Manager

+46 176 20 78 83

kjetil.vedholm@vibratec.se

Interested in Noise Barrier WHIS®Top?

Feel free to contact us for more information