WOLFF Cranes Modernize Oslo’s Ulven District

In parallel with the rebranding of Wolffkran Norge AS into a wholly owned subsidiary of Wolffkran Holding AG, Wolffkran is involved in 2 building projects in Norway’s capital, Oslo, which are now nearing completion. With a total of 5 WOLFF cranes of type 7534.16 Clear, Wolffkran Norge AS is significantly involved in the urban modernization of the eastern Oslo district of Ulven, which has long been known more as an industrial suburb, on behalf of Norway’s largest construction company, Veidekke.

Two WOLFF 7534.16 Clear cranes have been used over the past 2 years to build the “Ulvenkroken” residential complex, an apartment building with 180 units, on behalf of Veidekke. The cranes, each with a maximum lifting capacity of 16.5 t, a pointbearing capacity of 5.0 t and a jib radius of 60 m, were used to transport heavy prefabricated parts, steel and concrete. In just 8 days, the cranes poured five elevator shafts using a slipform construction process. While the formwork selfclimbed upwards, each crane poured concrete into one shaft around the clock – even at night. Thanks to their powerful 75 KW hoist winch and the resulting high operating speed of 185 m/min, the WOLFF cranes were the perfect choice for this job.

Sustainable Solutions and Uncompromising Service
The WOLFF cranes were positioned on foundation anchors, which were directly embedded into the building’s foundation.

“Thanks to our 2-part foundation anchor system, where only the cost-effective anchor part remains in the ground and the high-quality part can be reused, this solution is particularly sustainable and economical for the customer,” explained Sindre Aamodt, service technician at Wolffkran Norge AS.

A challenge arose from the neighbouring construction site, where 5 tower cranes were operating, with 2 of them swinging into the working area of the WOLFF cranes. The Wolffkran team successfully coordinated the anticollision systems of the WOLFF cranes with those of the neighbouring cranes.

“In addition, the working radii of the WOLFF cranes had to be coordinated with the adjacent railway tracks, pedestrian paths and roads, and several restricted zones had to be programmed,” said Sindre Aamodt.

After 22 months in operation, the cranes successfully completed their work in Oslo. The residential complex is expected to be ready for occupancy from January 2025.

New Headquarters, New Partnership
As part of the district’s modernization, 3 of the WOLFF 7534.16 Clear cranes are currently constructing Veidekke’s new headquarters just a few kilometres from Ulvenkroken. The building project, which is also nearing completion, is characterized by sustainable materials and a modern energy supply, and even prompted Norwegian Crown Prince Haakon to visit the construction site last year and climbed one of the cranes for a test drive.

For the construction company Veidekke, the 2 Oslo projects mark the first collaboration with Wolffkran Norge AS.

“Wolffkran has supported us extensively throughout the entire project phase,” said Morten Opstad Aarseth, project manager at Veidekke. “Whether during the planning phase, in obtaining permits through the railway authorities, setting up the construction site in coordination with the neighbouring site, managing the complex logistics during the crane assembly, or handing the demanding night shifts – the team was always by our side with competence and professionalism. A successful debut.”

Source: WOLFFKRAN International AG

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