An acoustic tunnel was designed at the Neasden London Underground depot to protect employees from the noise generated by nearby demolition works. Space was extremely limited on site, and services along the wall reduced opportunities for support. The tunnel was constructed in sections using Metsec components, which were manhandled into position for ease of installation. Strategic splicing ensured a lean and effective design. High-friction grip bolts and Lindapter brackets were used on the inner face to support the structure, while narrow inner columns were employed in areas with limited support options. Acoustic materials were integrated between the components to maximise the available space within the tunnel.
A working platform was also required above the tunnel for cable installation, with only 100mm of available space for the platform design. Additionally, the design accounted for the potential accidental damage caused by moving plant and machinery.
