Contractors World

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Contractors World UK & Ireland
2011 Volume 2 Issue 1
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6 tonne capacity Unic URW-706 mini spider crane was dismantled into two and lifted by a Terex Comedil tower crane onto the 87th floor of the building


On top of the world

The Unic URW-706 compact crane was chosen to work at the summit of the skyscraper thanks to its proven experience with rooftop lifting.Those watching the skies around the south side of the River Thames in London recently may have been surprised to see GGR’s compact mini crane being lifted to an incredible height of 283 metres onto the roof of The Shard — making it the highest ever compact crane in Britain.

The 6 tonne capacity Unic URW-706 mini spider crane was dismantled into two and lifted by a Terex Comedil tower crane onto the 87th floor of the building which is due to be completed later this year. Designed by Italian architect Renzo Piano and being developed by Sellar Property Group, the Shard will reach a staggering 310 metres in height and accommodate a hotel, offices, apartments, restaurants and a viewing gallery.

GGR’s Unic mini crane and specialist operators will be working from the rooftop for the next few months to lift glass panels from a storage unit on the 62nd floor onto the levels above on the north and west sides of the building. A total of 11,000 angled glass panels will eventually cover The Shard’s façade which has been specially designed to reflect the London skyline.

The Unic URW-706 compact crane was chosen to work at the summit of the skyscraper thanks to its proven experience with rooftop lifting. The 1.67 m wide crane can be easily dismantled , weighs just 7.9 tonnes yet provides 6000 kg of lifting power, making it a cost effective and flexible alternative to traditional tower cranes.

The variable outrigger positions of the crane made it an ideal choice to work within the limited space of The Shard’s spire construction.

The outriggers were moved with millimetre precision via radio remote control before the crane was lowered onto the building’s four main support columns, with little margin for error. The boom was then lifted up to the 87th floor and reattached to the crane, ready for work to commence.

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