The Group liased with Consultant Engineers Pell Frischmann to design an Absorptive Barrier to meet the sites noise reduction requirement to the neighbouring residential properties, as well as presenting a tough absorptive face to the rail yard side of the barrier.

The Betta Absorptive Noise Barrier has a variety of finishes and the preference on this contact is galvanised posts, pressure treated Tanalith E green vertical timber backing to the residential side (please see photograph) and an absorptive face of 17 chamfered vertical timber trim per bay over a weldmesh. Pell Frischmann required a really tough surface to this face so a heavy 50 x 50 x 3.0 mm galvanised weldmesh is being used between the timber trims and the breathable membrane, replacing the standard fine black weldmesh.

The Betta Absorptive Acoustic Barrier has been given a sound insulation rate of 26 dB and classified as category B3 in accordance with BS EN 1793-2:1998 and 20 dB sound absorption, category A4, in accordance with BS EN 1793-1:1998.