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Monthly Archives: November 2012

Simplex Westpile and Vibro Menard undertake foundation works for RES wind farm site

Leading specialist contractor within the UK piling industry, Simplex Westpile, has started work on a new piling contract at Roos Wind Farm, which lies approximately 15 miles to the east of Hull in the East Riding of Yorkshire. The main civils contractor, for whom Simplex Westpile is undertaking the piling work, is Forkers Ltd, working on behalf of renewable energy company, RES.

The £569,000 contract will see Simplex Westpile undertake piling works for five wind turbines and a met mast. On completion, Roos Wind Farm will host a total of nine wind turbines, which will provide sufficient renewable energy for the national grid to meet the annual average requirements of up to 14,000 homes.

The foundations for the wind turbines have been installed using a CFA rig and the depth of the piles, which were installed to RES’ specification, range from approximately 25 to 30 meters, depending on the locations of each turbine. Simplex Westpile started work on site during June 2012, with the 92 600mm diameter piles and 30 750mm diameter piles due to be completed by the 10th September 2012.

The contract has seen Simplex Westpile apply specialist piling techniques in challenging ground conditions with strict compliance to all planning and environmental constraints at the site in relation to the wind turbine foundation design and construction.

Joining Simplex Westpile on the project is specialist ground improvement contractor Vibro Menard. The ground improvement contractor is working on the installation of Control Modulus Columns (CMCs) to achieve a bearing capacity of 200kPa for crane hardstandings at the five turbine bases and meteorological mast, with a total settlement no greater than 20mm. Vibro Menard’s £900k contract has involved the installation of 5000 320mm diameter CMCs to achieve an overall grid pattern of 1.2m centres, at depths ranging from 7m to 21m. Testing involved one preliminary zone test to 180T and, when works commence, a further one percent of CMCs will be plate tested to 30T.

Rob Howarth, Piling Manager for Simplex Westpile, said:

“The need to invest in renewable energy is undeniable and the development of Roos Wind Farm will make an important contribution to the amount of clean energy produced in the UK. The work conducted by Simplex Westpile and Vibro Menard is vital to the longevity of the project and plays a crucial role in optimising generating efficiency.”