To achieve the height increase, Seward Wyon engineers Andrew Wyon and Dr Paul Heyes designed an innovative 1,000 tonne capacity modular system capable of jacking up to 5.5m. The system is comprised of eight 185 tonne strand jacks controlled by a central computer which constantly monitors the load and extension, ensuring total control throughout the lifting cycle. The entire jacking system has been developed to withstand wind speeds of 80mph throughout the operation.

The contract included initial engineering studies and work to ensure the stability of the crane structure and cope with the increase in flexibility due to the height increase, complete management of the project, in-house design of the jacking system, engineering and fabrication of the 5m box-leg extensions and all associated bracing, ladders and platforms.

MJ Information No: 19821