5 XXL CRANES AT A DATA CENTER

For the construction of a data center in Raunheim near Frankfurt, klarx managed the complete tower crane package over a project duration of 14 months. The scope of services ranged from 3D crane planning to lifting documentation and temporary power supply, as well as EHS coordination and complete logistics and assembly.

A WOLFF 6031.8 Clear, a Liebherr 630 EC-H20, and a Wotan X-treme 8040.20/2 were used. Weather protocols, defined restricted zones, and continuous on-site supervision were part of the integrated lifting concept.

• Location: Raunheim, Germany
• Duration: 14 months
• Scope: Full-service tower crane package
• Services: 3D crane planning, lifting documentation, temporary power supply, EHS coordination, logistics and assembly
• Cranes used: WOLFF 6031.8 Clear · Liebherr 630 EC-H20 · Wotan X-treme 8040.20/2

Fürst Berlin

For one of the most complex renovation projects in Berlin's contemporary history, a unique and innovative crane concept was developed. The complexity and distinctive design of this project required careful planning and coordination.

The outstanding advantage of this approach was that all project stakeholders had access to a single point of contact from the start. This promoted communication and clarity throughout the entire process. Although many offers were considered, klarx stood out with the most convincing overall concept.

In close collaboration with BBL Baumaschinen, the selected strategy was successfully implemented from theory into practice. By combining technical innovation and strategic planning, a customized solution was created that met both the specific requirements of the project and industry standards. The result was an efficient and effective implementation that not only led to project success but also serves as an example of excellent project management and technical expertise in the industry.

Cranes: BBL Wotan 8035/20-2, BBL Wotan 7024, BBL WK 355 B, BBL WK 100

Location: Kurfürstendamm, Berlin

Rail-mounted Crane in Denmark

The trend in logistics toward fully automated high-bay storage systems continues to rise steadily. For our customers, we operate throughout Europe and ensure that the right cranes are always in the right place at the right time. For this application, there is simply no better solution than a rail-mounted crane.

Pre-assembled blocks weighing up to 15t need to be positioned correctly hundreds of times. A mobile crane is conceivable, but an expensive alternative. A mobile crane would need to be repositioned at least 40 times if you follow the plan alone (which means no delayed deliveries, no material shortages—in other words, an illusion). This costs time.

But if you want to assemble the steel first and install the roof later, the mobile crane would need to be replaced with a larger one. Again, a time loss that could be avoided.

In the meantime, the rail-mounted crane has become our specialty. An unfortunately almost forgotten technology that we revive as often as it makes sense.
It doesn't matter whether the crane should have a capacity of 150mt or 630mt. We always have solutions available.

— Oliver Wargalla, Tower Crane Department Manager.

Crane: Linden Comansa 21LC450

Location: Kolding, Denmark

Liebherr 81K.1 in Tight Spaces

In tight spaces, the true capabilities of installers and crane rental companies are put to the test. A 3.5m wide driveway as a dead-end street—that's a challenge. Technically, this can only be solved without significant effort with the right technology. We possess the expertise to know who has a Liebherr 81K.1 and the matching loader crane.

Additionally, the crane had to be pushed 30m into the correct position using the "nose" of the loader crane, and five tower sections had to be installed. By the way: The hook height was determined with the help of a drone, since the tree canopy could not be measured using conventional means due to the local situation.

Many complex jobs land with us because many providers prefer the easy projects or don't know how to solve the problem without major additional costs.

— Max Kapfelsperger, responsible for undercarriage cranes at klarx.

Crane: Liebherr 81K.1

Location: Düsseldorf

The Liebherr 550 EC-H20 at the Waste Incineration Plant

Normally it works like this: A powerful crane needs a powerful mobile crane. A tall crane needs a tall mobile crane. But what mobile crane do you need when you have a powerful and tall crane, but have to assemble it in the tightest of spaces and the maximum weight is limited to 84t? Clearly the Tadano AC 7.450-1 with Y-bracing.

The powerhouse was able to lift the turntable, weighing 17,000 kg, to a height of 75 m. The attachment point for the tower tip was even at 91 m. There was no space for setting up a counterweight, as only the inner courtyard was available, which was effectively not even 40 m long.

In this configuration, the assembly concept was unique, which ultimately secured us the contract and the customer's trust. Knowing which crane partner has which technologies and what they are capable of is the fundamental prerequisite. In this case, it was the company Weiss Kranservice from southern Germany that made the seemingly impossible possible.

— Oliver Wargalla, Head of Tower Cranes.

By the way: At that time, 21 Tadano AC 7.450-1 cranes were delivered worldwide, but only three in Germany.

Crane: Liebherr 550 EC-H 20 Fr.tronic

Location: Wuppertal

Tower Crane Liebherr 81K.1

The assembly of the Liebherr 81K.1 tower crane presented our team with special challenges that required careful planning and coordination. In particular, the adjacent property, which could neither be entered nor driven on, as well as some street lamps in the immediate vicinity, posed significant obstacles.

Thanks to forward-thinking, timely planning and direct communication with the excavation contractor, we were able to develop an effective solution. Despite the close proximity to the excavation pit, we created a safe standing platform using concrete rings and ensured the necessary stability for the crane. Close collaboration with all involved specialists and detailed project coordination led to a successful crane assembly that met both technical requirements and time specifications.

Crane: Liebherr 81K.1

Location: Kronberg

The Liebherr 81K.1 with a 7.4m Cable Bridge

In the interest of our customer, we took over complete organization for the assembly of the Liebherr 81K.1 tower crane and designed a timely and efficient plan. By utilizing our extensive network, we were able to provide both short-notice road closures and cable bridges to ensure smooth operations.

The entire process was meticulously planned and strictly coordinated to avoid any inconveniences or delays. The first step was to set up the crane precisely and properly at the designated location. Just 30 minutes later, the cable bridge was installed. This precisely timed sequence was essential due to the special spatial conditions on-site, and reversing this order would have proven impossible.

The precise planning and coordination of all these aspects ensures that the assembly proceeds smoothly, safely, and on schedule. In summary, meticulous planning, the involvement of experts from various fields, and the use of specialized equipment were the key to the successful assembly of the tower crane. This approach reflects our commitment to meeting the highest quality standards and fulfilling our customer's needs.

Crane: Liebherr 81K.1

Location: Frankfurt

Construction project on steep slope

On the construction project with the underhung crane BBL TK 4814 FU in Frankfurt, we encountered some specific challenges that required precise planning and implementation. In particular, there were adjacent trees in close proximity that could pose a potential hazard to construction site work.

To avoid contact or collision with the surrounding trees, we carefully and strategically positioned the crane location. State-of-the-art technology was used for this: Through our detailed drone recordings, we were able to determine the steep slope and gradient precisely. These precise data enabled the landscapers to carry out their work optimally with the help of our crane.

Another special challenge was that the hook block had to reach the soil at the outermost, deepest point. This required precise coordination with the teams involved to ensure that all technical requirements were met.

Crane: BBL TK 4814 FU

Location: Frankfurt