Specialist geotechnical contractor Bachy Soletanche is due to complete piling on the 10MW Hellrigg Wind Farm off the coast of Cumbria.
Bachy Soletanche, is working on a 10 week £500,000 piling contract for Hanson Contracting to build the foundations for the Hellrigg Wind Farm in a remote location near the Solway Firth between Cumbria and Dumfries and Galloway.
RWE began constructing the wind farm, which was in planning for six years, in February. The Hellrigg Wind Farm will consist of four 396-foot high wind turbines with a total generating capacity of 10MW
Due to last 10 weeks in duration, the contract involves the piling for four large wind turbines where four massive piled foundations are required. The piles will be constructed with segmental casing and under a bentonite suspension due to the properties of the soil and the unstable ground. Each base will contain 16 x 900mm diameter piles which vary in depth from 25m 38m.
Heavy duty large diameter auger (LDA) rigs are being used to construct the deep piles on this remote site. Due to its location, and the worse than usual weather conditions, access and logistics had to be taken into consideration and health and safety on site is paramount.
“The site is in a remote location and we are using large piling rigs and cranes and making sure that there’s as little disruption as possible to the surrounding area,” said Bachy Soletanche contracts manager Steve Mallinson.