Lifting a beam by Mammoet
For a better railway connection between Nijmegen (NL) and Den Bosch (NL) a new fly-over was built. Here fore six concrete made beams between 303 and 202 tonnes massy and 32 and 48 meters long should be placed.
For the first beam four big cranes of Mammoet were required, from left to right we see: Terex AC 700, Liebherr LR 1750, Terex AC 700 and a Liebherr LTM 1500-8.1.
The Liebherr LR 1750 is fitted with a 56 meter main boom and 31.5 meter derrick boom. With the crane is also the 4-leg support of 300 tonnes hoisted.
The first beam is hoisted by the LR 1750 and AC 700 in tandem hoist. The AC 700 is fitted with 140 tonnes of counterweight.
Here the load is swinged trough both cranes.
The LR 1750 is not able to boom down anymore. The load is via a triangle construction over handed to the second AC 700.
In detail, from the lift the AC 700 is attached to the triangle. The load is still hanging in the LR 1750.
Overtaken! The beam is now hanging in both AC 700s. The LR 1750 is released now.
Both AC 700s bring the beam to its destination.
Time for the same tric. Now the LR 1750 will take over the load from the front AC 700. Meanwhile the superlift counterweight is attached to the LR 1750, about 325 tonnes.
The AC 700 can be released.
Meanwhile also the LTM 1500 is in action. The crane is attached to the multibeam that is hanging in the rear AC 700.
The beam is finally placed with three cranes on its destination.
The big beams are made on-site and traveled by SPMTs to the cranes.