SELF-ERECTING TOWER CRANES Ӏ SECTOR SNAPSHOT
BKL USES LIEBHERR MK 88-4.1E AT HISTORIC PALACE ON LAKE CHIEMSEE, GERMANY
Forstinning, Germany-headquartered crane rental, sales and service company BKL Baukran Logistik used a Liebherr MK 88-4.1E self-erecting mobile construction crane last autumn to place large scaffolding sections over historic fountains in the Ludwig II of Bavaria palace gardens, on the island of Herrenchiemsee, Lake Chiemsee, Germany. The scaffolding is installed each winter to protect the ornamental fountains from
possible snow and ice damage. The crane was transported to the island
via ferry. Once at the job site the crane used 25 metres of its 45-metre-long foldable horizontal jib to assemble the various large-format components. The crane was repositioned once
between the two fountain complexes. The change of location took around half-an-hour. Once the scaffolding structures had been
erected the crane lifted the large plastic tarpaulins into place. “Compared to a small mobile crane, the
MK 88-4.1E offers us a signifi cantly greater hook height,” says Christian Hofmann, project manager at the scaffolding company Westermaier. “In combination with trolley travel, the scaffolding components can be lowered precisely over the delicate fi gure fountains, which are up to 13 metres high, and navigated even more easily on long slings than with a conventional, luffi ng telescopic boom.” According to Liebherr, the raised cab of the MK 88-4.1E proved particularly helpful for the precise positioning of the loads. From a height of around 20 metres, crane operator Drago had an excellent view of the scaffolders at work. He was further assisted by the hook camera attached to the trolley, which transmitted a vertical view of the hook block and load directly to the monitor in the cab. This, said Liebherr, allowed the components to be guided with centimetre precision according to the fi tters’ instructions. By late afternoon, the work was completed and the two large fountain installations were fully wrapped up for winter. After the boom had been folded away fully automatically, the mobile construction crane left the island via ferry again.
24 CRANES TODAY
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