Noise Barriers For Metro Rail, which comprise the great majority of absorptive type metallic panel & reflective type polycarbonate sheet, are generally located at the edge of the road to reflect traffic noise. Some noise is transmitted through the barrier, but is generally low in relation to 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 occupants.
Middle sheet - Plain Aluminum alloy sheet, 1.2 mm thick.
Panel joint - Each panel having tong & groove to joint perfectly with each other .
Gasket - The panel and structure having 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 made of Aluminum alloy riveted to panel.
Powder Coating: - all metallic surface / parts are powder coated, the minimum thickness is 60 Mu.
The STC rating is 36.