GeoGrow were invited to provide a formal design for the supply and installation of a Rootlok vegetated wall system to part of the riverbank along the river Aire corridor between Wellington Bridge and Viaduct Road.
GeoGrow’s design engineers worked along side BAM Nuttall and Mott MacDonald who were to carry out a range of works along the river Aire including areas where major flood events hit Christmas 2015. GeoGrow provided a design for an earth reinforced structure utilising geogrids with a Rootlok geotextile bag facing to provide a sustainable green finish. The wall measured approximately 44m long and 3m high, and had a geogrid wraparound face to provide extra factors of safety.
Rootlok was chosen to provide a softer, engineered system to promote a more natural structure that provides more benefits for the environment, wildlife habitats and a vegetated finish. All stone was sourced locally to help reduce the schemes carbon footprint.
The wall was installed within a six week period. On completion in December 2020, the front face of the Rootlok system was hydroseeded with a riverbank seed mix and planted with a range of herbaceous flowering plants. Over winter, the seeds were protected by a high-performance mulch mix and successful germination took place in spring 2021. Grass and plants started growing and gave a colourful vegetated finish for the remainder of 2021. Eight meters back from the top of the wall, BAM Nuttall built a brick and block flood wall to further protect the local businesses and residents.
BMMjv where delighted with the Rootlok system, which was also met with approval from the clients, Leeds City Council and the Environmental Agency.