A 400t Grove GMK6400 all terrain crane was used by German heavy lift specialist Hack to lift construction materials onto the roof of a 60m-high building.
The project was based in Koblenz, Germany and involved lifting 5t loads at a radius of 86m in an inner-city location. The crane was required to navigate trees which lined the job site, with the jib rigged in mid-air to avoid damaging the recently-resurfaced road.
Using the GMK6400 configured with a 55m boom and 79m luffing jib, Hack completed the job in two days.
The crane was accompanied by four trucks and was fitted on arrival at the site with its full 135t counterweight, before the self-rigging MegaWingLift attachment was installed, increasing capacity by 70%.
Supported by flat-bed trucks, the jib sections were connected at ground level before the full 79m extension was raised.
Since purchasing the GMK6400 in the summer, Hack has also used the crane for projects including wind turbine maintenance and erection, tower crane assembly, and other large-radius lifts on inner-city sites.
Company owner Udo Hack said: “The GMK6400 is fast to erect, easy to use, and can perform lifts that few other cranes of this size can complete. I am delighted with how busy the crane is.”
