The Wrekin Products geosynthetics team value-engineered a fit-for-purpose adoptable road for a new Derby housing development, working with the city council, William Davis Homes and S&L Groundworks.
The team created an adoptable road solution for new housing development Oak Grange. Derby City Council’s overseeing engineer had previously highlighted various issues surrounding the creation of a permanent adoptable road that needed to be resolved before the adoption could progress.
The Wrekin team visited the site and identified that, before using a geogrid solution to significantly reduce the road foundation thickness, a performance trial was needed to prove efficacy for implementation. This was due to the very weak subgrade and the potential for differential movement.
First, Wrekin cleared a 20-metre long on-line area down to the sub-formation, with an additional ten metres at either end to allow for access and egress. An initial layer of MultiTrack MT1000 geotextile provided separation of fines and filtration of water flow, which could have otherwise weakened the foundation over time.
The geotextile layer offers efficient separation and filtration, and when partnered with subsequent geogrid layers, it ensures strong reinforcement by enhancing the stability of the 6F5 aggregate used for capping materials.