Althon have recently supplied a bespoke precast headwall retaining wall at Mauldslie WWTW.
The headwall was manufactured to accommodate multiple pipe openings and to site specific dimensions. The headwall was offloaded and installed by the contractor within the space of a morning.
If you require a bespoke precast headwall please use their Headwall Design Tool or email them at sales@althon.co.uk for more information on how they can help.