COMMERCIAL DEVELOPMENTS Ӏ SECTOR REPORT
was both a glamorous star of
Hollywood’s golden age and the co-inventor of radio frequency hopping technology which laid the ground for today’s wireless world. In this mix of talents one might see inspiration for today’s world, where shopping and relaxation, work and play, live side-by-side. The mixed use project on
Vienna’s Mariahilfer Straße, in the heart of the city’s downtown, required careful selection and planning of cranes. Contractor Habau Hoch- und Tiefbaugesellschaft purchased a Wolff 8033.16 Cross for the project. It is being used alongside two more Wolff cranes, a 7352.16 Cross and a 6023.8 Clear, to construct the building shell. Wolffkran planned the job so that only the largest crane needed to be erected with a mobile crane. The 8033.16 Cross was then used to erect the 7532.16 Cross, which was itself used to erect the flat top. It took some careful planning.
Stirnimann supplied four cranes to Implenia for work on a mixed use project in Lausanne, Switzerland
"For the assembly of the roughly 14t jib of the Wolff 7532.16, our team had to calculate an overload hoist for the Wolff 8033.16 since the crane was statically reaching its limits at this point," says Zeljko Tenjovic, managing director of Wolffkran Austria. Space and overflight limits made placing the cranes equally tricky. The larger crane was placed on the edge of the site, with the smaller cranes in the middle. Since 2022, they have been used to lift concrete, formwork, and reinforcement across the 6,500 sq m site. The cranes will help get the building shell completed fast, by the end of the year. But the Wolffkran team have set themselves up for another challenging set of lifts at the end of the project: once the building is complete, there will be no way to get a mobile crane close enough to the cranes to dismantle them. The Wolff 7532.16 will first dismantle the Wolff 6023.8, and
afterwards, it will be dismantled by the 8033.16 standing some 60 metres away. The 13-tonne heavy counter jib of the 7532.16 will have to be split into two parts. “To handle this, we need to release the bracings of the counter jib at the tower top and support the remaining jib section with special supports towards the crane tower before this component can then also be taken down," says Tenjovic.
ECO DISTRICT In Switzerland, Potain dealer Stirnimann supplied four cranes to real estate and construction company Implenia for work on another mixed use project, Central Malley, in Lausanne. The new ‘eco district’ on a brownfield site on the edge of the country’s fourth largest city, will combine offices, housing, and shops, and seeks to promote energy autonomy. “Several factors make this a
complex and unique project, with building heights reaching 80m
40 CRANES TODAY
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