Erosion Control Revetments

Erosion Control & Revetments

There is an urgent and increasing need for sustainable and environmental solutions to help arrest the erosion of river banks and the edges of watercourses. Durable and sustainable solutions are a must and this is where our innovation team get to work. When it comes to erosion control our commitment is that the habitat left behind is more durable, with greater bio-diversity, than the one inherited.

Creative solutions

Our erosion control expertise draws upon the best use of either hard or soft revetments depending on the project requirement:

Hard Revetments

These are permanent structures, often used in high energy environments where wind, wave and flows may be aggressive here a durable and robust revetment solution is needed.

A range of options for hard revetments

Vertical walls. Created from sheet or timber piles, conventional masonry walls, or cellular wall systems. Where these walls are built against watercourses or even below the water line, they become a revetment.

Sloped or graded revetments. Generally lower impact and lower cost than a vertical equivalent. Where land is available for this solution, Rip-Rap (stone blankets), Gabions (stone filled baskets) concrete (interlocking blocks or panels) or open stone asphalt solutions can be used.

Wooden piling on the Wey
Growing beds

Soft Revetments

Soft revetments are created from sustainably sourced materials, offering malleable and flexible solutions for erosion control. Vertical edges are formed using timber poles combined witha woven geo-fabric retaining structure (Nicospan) or sustainably sourced hazel or willow faggots and bundles as in-fill panels between the poles.

Pre-grown coir mattresses and rolls planted with indigenous species are used to provide an instant living aquatic margin. These sustainable products are propagated and matured in our own “wet” nursery’s at Abinger Hammer, using the spring waters of the River Tillingbourne.

In high energy environments, soft revetments can be combined with traditional details such as gabion baskets, mattresses and reinforced soil structures, to offer additional strength and durability, stimulating the habitat.

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