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Contractors World INTERNATIONAL - 2016 Vol 7 No 2

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Terex Superlift 3800 Lattice Boom Crawler Crane 
Used To Install Steel Bridge

Laser-Like Precision

Terex Superlift 3800 Lattice Boom Crawler Crane
Used To Install Steel Bridge

Power and precision – two characteristics that were in high demand on the night lift installing the new 15-meter-long, 66-tonne Schöneck bridge in the Saarland municipality of Kirkel, in Germany.

Trier-based Steil Kranarbeiten used its Terex Superlift 3800 lattice boom crawler crane to complete the project by the main contractor, TKP Krächan.

Before the new bridge could be put in place, the old one had to be demolished, A structure from the ‘60s, the bridge was considered to be at risk of collapse, and had been closed off to vehicles for quite a while.

Accordingly, the run-down bridge was removed two months earlier in a night shift that spanned multiple hours and saw the old structure lifted out after being split into eight sections. The Steil team used a different machine to remove the bridge: a Terex AC 350/6 all terrain crane.

The time factor proved to be a challenge throughout:

“Since both the old and the new bridges cross over the Paris-Mannheim ICE train route, the overhead lines had to be disconnected from the grid before the lifts were carried out.
     We were asked to disrupt the Intercity-Express service as little as possible, this meant that we only had a time window of a few hours in both cases,”

reports Martin Mittler, who is in charge of resource planning at Steil and was one of the people responsible for the project.

Tight space conditions on site

The Steil team did not just face a tight schedule, but also challenging conditions. The work site was right in the middle of a residential area, leaving the team with precious little space and making it difficult both to get the Superlift 3800 crane’s components to the site with a total of 19 trucks and to set it up with a Terex AC 350/6 assist crane.

continued >>>>

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