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
Contractors World International Vol 6 No 4
Contractors World International
Takeuchi mini-excavators worked
precariously in preparing the foun-
dations for the new station.