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Contractors World - INTERNATIONAL
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Contractors World INTERNATIONAL - 2016 Vol 7 No 2

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Below-the-Hook Equipment for Bridge Project . . . . continued

Both cranes were equipped with Liebherr’s VarioBase system, a variable supporting base.

Both cranes were equipped with Liebherr’s VarioBase system, a variable supporting base.

Senn chose Liebherr LTM 1130-5.1 and LTM 1160-5.2 models, both with capacity in reserve and each equipped with the manufacturer’s VarioBase system, a variable supporting base introduced to the market at the Bauma trade show in 2013.

Liebherr developed the system with which every individual crane support can be extended to any length and the crane operation is then made safe by a load moment limiter. The extension length and support force of every support is measured and the maximum lifting capacities for a situation calculated.

Jörg Senn said:

The VarioBase system added safety to the lift as incorrect operation can be avoided both during the setup process and when handling loads. Combined with the below-the-hook equipment from Modulift, we successfully completed reinstallation of the bridge during overnight shifts to the strict time schedule.

Three Senn AG professionals communicated via radio throughout the project.

Three Senn AG professionals communicated via radio throughout the project.

Senn employed two 70t Modulift spreaders from its rigging stock, which also includes a 110t and two 24t beams. Jörg Senn explained that, again, sourcing equipment and expertise from within the company enabled swift selection of the right rigging gear with precisely positioned lashing points.

He concluded:

We are battling in a tough economic climate here in Switzerland so the Aarwangen bridge lift was rewarding. We have been engaged in several bridge manufacturing projects recently but, in the main, general construction work is keeping us busy.

For further information:

Modulift
Liebherr Mobile Cranes


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