Concrete pipe was initially specified in diameters up to 600mm; however, Polypipe CGU were able to break the specification due to the speed that its products could be installed in comparison – an important factor given that the installation of the drainage system took place on a live highway. Polypipe CGU supplied the drainage system using a range of diameters from 150-600mm. Ridgidrain with integral socket was used on the busiest sections of the motorway to further speed up the installation process and achieve the demanding construction programme.
The £78 million road improvement scheme is being carried out by Costain on behalf of the Highways Agency. Polypipe CGU was awarded the contract to supply the drainage system following a number of successful road projects with Costain, its ability to re-engineer the specification, and distribution network which ensured continued deliveries direct to site.