Eco Foundations Limited
Avonbrook House
198 Masons Road
Stratford Enterprise Park
Stratford-upon-Avon
Warwickshire
CV37 9LQ
UK
Tel: (+44) 01789 295020
Fax: (+44) 01789 268350
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King Post Retaining Wall Installed Alongside Railway Line In Northampton
We have recently completed a king post retaining wall alongside a railway line in Roade, Northampton for developer Taylor Wimpey.
The soil conditions included Blisworth Limestone which is a very hard material requiring highly specialised drilling equipment in order to install the king posts, but within the constraints of the proximity of the railway line.
Originally designed by the clients Engineer's as sheet piles which couldn't be driven in the soil conditions Eco Foundations were able to design and offer a solution to the client resulting in the successful construction of 70 linear metres of retaining wall, with a retained height of 2.4 m.
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Soil Mixed Retaining Wall Installed in Putney, London
Approximately 100 m of retaining wall has recently been installed in Putney, south west London for a development using soil mixing techniques.
The soils were predominately dense gravels which are perfect for the triple auger soil mixing system we offer, and the great advantage to the client was the proximity of the existing boundary wall that the rig can work within, to maximise the amount of basement available for the development.
Pictured here is the soil mixed wall, after the dig. The client chose to excavate the wall back to the width of the I beams to further increase the size of his basement. See how close the wall is to the existing brick wall which was left indisturbed by this silent, vibrationless and eco friendly system. No concrete was brought to site and no arisings needed to be disposed of, as all of the host soils are mixed with cement slurry to form the temporary structure.
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Large Diameter Stone Columns Installed In Stockton On Tees, Teeside
We are currently installing 1500 large diameter stone columns for a housing development in Stockton on Tees, Teeside. Half of the columns are 500 mm in diameter driven to 10 m through very hard soils to stabilise a slip circle on an embankment. The remaining columns are 350 mm in diameter and are being installed to 8 m to form the foundations for houses to be built on.
The columns are being installed using one of our powerful RTG RG16T telescopic leader rigs with 105 tons resonance free variable moment vibrator, without the need for pre augering.
The design calls for the first 4 m of the column to be filled with a lean mix concrete and the remaining 6 m with pure stone, which is supplied from recycled aggregates on site.
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Sherlock Homes, Danger Mouse, Gerry Rafferty and now Eco Foundations all have a claim to Baker Street, London, UK
As the song goes “Winding your way down on Baker Street, light in your head and dead on your feet. Well another crazy day” … in the exciting world of Eco Foundations Limited. Eco have just completed a virtually silent and vibration-free steel pile-pressing contract for McAleer and Rushe Limited, at 2-14 Baker Street, London. The contract was awarded to the piling specialist due to the innovative piling solution offered to the Northern Irish contractor. The project consisted of an 18m run of sheet piles to temporarily retain up to about 2.8m whilst the principle contractor excavated the site for a new basement. As with many city centre sites, the retaining wall was positioned immediately adjacent to the edge of the site. Due to other site operations Eco was only given a working area of 20m by 6m in which to work. The small working area, together with an existing lamp-post just 150mm from the face of the piles made piling plant selection the main criterion for awarding the sub-contract.
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VCC piling in Pontardulais, South Wales for new Tesco store
Eco Foundations are currently involved in a contract for S Dudley & Sons to install approximately 650 VCC piles of 400 mm diameter to depths between 9 m and 14 m for a new Tesco Store in Pontardulais, South Wales.
All of the piles are steel reinforced to withstand both tension and lateral loads, and half of them have enlarged heads to 900 mm for improved load transfer from the concrete slab.
The piles are being installed using an RTG RG16T telescopic leader rig with 105 tons resonance free variable moment vibrator. The highly powerful rig is capable of going through very hard soils with N values of up to 40 and still obtain very high outputs enabling us to provide a competitively priced product when compared to driven cast in situ or CFA piling.
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1500 mm Diameter Deep Soil Mixing Carried Out In Prestatyn, Denbighshire, North Wales
Eco Foundations' pioneering new deep soil mixing ground improvement technique has once again been in action. This time for a retail park development in Prestatyn where soil mixed columns of 1500 mm in diameter have been installed through soft soils up to 8 m deep. (The system can be used to treat soft ground up to 24 m in depth).
The soil mixed columns were installed through soft silts, alluvial deposits, soft clays and peat and founded on sand using our in house designed innovative twin paddle soil mixing system attached to a 65 tons RTG RG19T telescopic leader rig with double rotary head.
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Silent Piling Beside Canterbury Cathedral
We recently completed a project in Canterbury, Kent for Cardy Construction, at the Beaney Institute right beside the famous Canterbury Cathedral. As a result silent and vibrationless sheet piling was a site requirement so Eco Foundations used one of their Giken UP150 Silent Pilers to do the job.
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Large Diameter Soil Mixed Columns Installed In Newtownards, Northern Ireland
Eco Foundations are once again pioneering new ideas in ground improvement. For the first time in the British Isles soil mixed columns of up to 2.00 metres in diameter have been installed up to 20 m deep.
The columns were installed through very soft silts, soft clays and founding on medium dense gravels using our innovative twin paddle soil mixing system attached to a 100 tons RTG RG25S fixed leader rig with double rotary head.
Cement slurry is pumped from a mixing plant through the centre tube of the auger during the downward soil mixing process and again during the extraction soil mixing process. This results in an extremely homogeneous mix of the host soils together with the cement binder. The amount of slurry being pumped into the column is computer controlled by the rig operator and a full print out is supplied to the client as part of the QA process.
There are no pile arisings resulting in cost savings as there is nothing to take off site, and there are fewer lorry movements as the only imported product in the process is cement which is brought in bulk tankers, unlike traditional piling methods which rely on concrete delivered in small quantities via truck mixers.
The columns were installed in a grid pattern and topped with a soil mixed platform which the foundation slab is cast on top of.
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King Post Retaining Wall For Flood Defences Installed In Sheffield
A contract to install a king post retaining wall for flood defences with concrete panels has recently been completed for JN Bentley in Sheffield, South Yorkshire.
The king posts were installed by a telescopic crawler crane into 600 mm and 750 mm diameter holes drilled through very hard mudstone with a high torque CFA piling rig. Access was extremely restricted as we were working along a narrow platform between the river and a building.
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