Design Buy Build Issue 17 2015 | Page 40

Green Foundation “Lafite” sculptures at Waddesdon Manor in Buckinghamshire T arget has been devising solutions for nearly 20 years. In that time it has produced nearly 100 unique standard details, based on the hundreds of design specifications that its engineers have worked on. Whilst similar it is safe to say that jobs are rarely the same. In 1998 Target launched its Heli Pile, an awardwinning, unique foundation system that is simply hammer driven into the ground causing it to rotate as it goes. Produced in one metre sections, lengths are screwed together during installation and tested until the required load is achieved. If the load is not achieved, another length is attached. Heli Pile can achieve loads in excess of 100 kN. This installation method is in stark contrast to traditional foundation methods which involve digging deeper and deeper if adequate ground bearing is not achieved. “ It’s very easy to create a mess, but who will tidy up after you? ” It is very easy to create a pit that is three or four metres deep and fill it full of concrete, but costs will start to multiply once soil is removed and used as land fill, even without taking into consideration the mess and environmental cost of pumping concrete. By contrast, Heli Piles can be capped in a ring beam that is just 450mm deep or, with Target’s innovative bracketing system, the structure can be fixed directly with no concrete at all. Did you know? ● Concrete production is responsible for 5% of the world’s carbon emissions. ? ● Every year, on average three tonnes of concrete will be consumed by every person on the planet. Heli Pile installation in 450mm ring beam