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11 April 2008

Two types of crane worked together on the construction of a 130 m pylon for a new bridge in Germany.

A tower crane was supported by a large lattice boom mobile crane for the final stages of erecting the pylon on the new Rhine Bridge in Wesel. A stationary Liebherr 280 EC-H 16 Litronic tower crane was accompanied by a Liebherr LG 1750 lattice boom mobile crane.

The LG 1750 is owned and operated by Berlin-based Grohmann GmbH, while the tower crane is owned by Liebherr distributor Gerd Wedekind Baumaschinen GmbH based in Kassel it is operated by the project's contractor Hermann Kirchner Hoch-und Ingenieurbau GmbH, Bad Hersfeld.

For the pylon project the tower crane has a 70 m working radius where capacity is 3.1 tonnes. The 500 HC tower system on foundation anchors gives a 142.4 m final hook height achieved with one tie to the pylon.

The mobile crane was set up with 56 m of main boom and 70 m luffing jib. Its 16 m2 base area and slewing platform extension, which increases the ballast radius by 2.65 m, meant that only 150 tonnes of ballast was needed to erect the mast.

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