Metallic Noise Barrier For Highways and Railways

Metallic Noise Barrier For Highways and Railways

Metallic noise barriers are made of acoustic elements placed horizontally or vertically between the supports railings. They allow a large architectural flexibility (colors, motifs, structures…). Their lightness allows producing them quickly, which is economical.

These barriers are isolating and absorbent and meet the strictest criteria of the European standard EN 1793 regarding devices for the reduction of road traffic noise. Acoustic absorption according to EN 1793-1 & Acoustic isolation according to EN 1793-2.

Elements are made in aluminum or galvanized steel . They contain a mineral wool protected by a non defiberizing geotextile that will eventually be neoprened. A perforated grill in aluminum insures the mechanical protection of the absorbent material.

Metallic noise barrier which comprise the great majority of noise barriers are generally located at the edge of the road to reflect traffic noise. Some noise is transmitted through the barrier, but is slightly less intense than the noise level on the other side of the barrier. The height of these barriers is usually greater than other types. Often traffic noise levels increase for vehicle occupant

technical specification
Acoustic Performance Laboratory measurement of airborne sound as per IS-9901(Part III) -1981, DIN 52210 part IV – 1984, ISO: 140 (Part III) – 1995 , 45 STC rating
Wind Load Designed as per IS 875 Part-III, 1987
Sound Proofing Class -A4
Sound Deadening Class -B2
Type of Wall Double skin insulated wall
Outside Sheet Plain aluminium alloy sheet / GI sheet , 1.3 /1.5 mm thick
Inside Sheet (Traffic/ Source Side) skin- 1.2mm thick aluminium alloy/GI Perforated sheet with 22% open area
Joint Each panel having tong & groove to joint perfectly with each other
Gasket The panel and structure having neoprene rubber gaskets at the joint to block noise leakage.
Vertical Post/ Structure The structure is of ‘H’ profile in which acoustic panel slides longitudinally.
Top Cover All acoustic panel covered at top with top cover riveted to panel. Finish -All metallic surface/parts are powder coated / painted in desire shade.