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The crane is being used to build

the new Eibsee cable car. At an alti-

tude of 2,975 m the crane is now the

highest building site in Germany. It is

operated with a radius of 50 m and a

hook height of 18.6 m.

The crane was specially configured

for this job to enable it to withstand

the enormously high wind speeds

of up to 280 km/h and the low tem-

peratures. Liebherr tower cranes are

designed as standard to withstand

temperatures down to -25° C.

With such a challenging site location, the erec-

tion of the crane required perfect teamwork be-

cause the whole situation meant that the erection

work had to involve a helicopter.

As a result of its modular design, dismantling

the crane into components weighing no more than

3.4 tonnes was an easy job. This meant that they

were tailored to the maximum load capacity of the

helicopter. Altogether there were 11 sections.

“Ideally, we would have preferred to erect the

entire crane in one session. The weather was

good at first. Only the heaviest transported

part, the 3.5-ton jib stay, had to be postponed

because of unsuitable weather.”

said Martin Hurm, Project New Eibsee cable car / Bay-

erische Zugspitzbahn Bergbahn AG.

The cooperation between the various teams meant

that the helicopter erection process of the Flat-Top crane

went extremely smoothly.

The crane was prepared for the special

erection process when it arrived at the

site. It was transported to the Sonnalpin midway station in

components on the rack railway. From there the Heliswiss

pilots flew the components up to the summit station

where the crane was then erected from the air with the

Page 16

Contractors World International Vol 6 No 4

Contractors World International

Takeuchi mini-excavators worked

precariously in preparing the foun-

dations for the new station.