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Maccaferri supplies soil reinforcement solutions to form a bund at Brooklands Ridge, UK

Soil reinforcement

Maccaferri’s Enkagrid Pro & Biomac were used by UK contactor, Ian Smith Construction, to build a bund consisting of reinforced soil slopes.

The Eastern Expansion Area (EEA) of Milton Keynes is a 400-hectare site located immediately west of the M1 Motorway at Junction 13 as its most northerly point and the A421 forming its southern boundary.

Brooklands is located on the eastern edge of Milton Keynes and forms a substantial part of the Eastern Expansion Area (EEA), allocated for development in the Milton Keynes Local Plan (adopted December 2005).

One part of the infrastructure works in the northern half of the Brooklands site is The Ridge, which is an acoustic earth bund to reduce the effect of the M1 on a proposed new housing development consisting of 2500 homes.

The contractor, Ian Smith Construction, using designs provided Peter Brett Associates, utilised the services of Maccaferri to produce the bund which consists of a reinforced soil slope between 1.5 – 5.5 metres high, formed from offset vertical benches.

Maccaferri supplied Enkagrid Pro and Biomac to form the reinforced soil structure, and the structural fill is a selected site won stiff clay.

Enkagrid Pro is the primary reinforcement to the slope and was installed at 600mm vertical centres allowing steep slopes to be formed at angles up to 70 degrees. For slopes over 45 degrees the geogrid can be formed into wraps to stabilise the soil face. This is combined with Biomac erosion matting which lines the face of the wraps and in combination with a layer of topsoil allows for a grassy finish. Also known as Rolled Erosion Control Protection (RECPs) mats, Biomac Erosion Matts provide immediate protection to vulnerable slopes to the effects of erosion such as the wind, rain and surface run-off. Placed on topsoiled and seeded slopes, Biomac supports the establishment of vegetation. As the mat biodegrades over time, the protection function is maintained by the vegetation.

Biomac blankets are also used as face protection in soil reinforcement works, secured within the geogrid fascia of the slope and preventing the washout of valuable topsoil.

For more information, please contact us.

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