JM Sverige is about to finish the Kista Torn (“tower”, in Swedish), a residential building located in the district of Kista, in Stockholm, the capital city of Sweden. The complex is formed by the 120-metre-high Kista tower (35 floors) and the smaller K2 building (15 floors), which both together will house 362 apartments.

linden-comansa-tower-crane-sweden

For the construction of the Kista tower, Linden Comansa’s long-time partner Edins Byggkranar provided JM Sverige two brand new Linden Comansa tower cranes in September 2013. The first crane to arrive to the jobsite was a Linden Comansa 21 LC 750 48t, erected with 50 metre of both radius and height. This flat-top tower crane helped to assemble the second Linden Comansa tower crane, a 16 LC 185 8t, with 35-metre radius and height of 32 metres.

Both cranes first collaborated in the construction of thick concrete walls in the basement of the building. Soon afterwards the 21 LC 750 48t started with the rising and positioning of the prefab walls that shape the building. From floor 8, both walls and floors were all prefabricated allowing the crane to build each floor very fast. The 21 LC 750 always worked three floors ahead of a team of workmen who set the electrical and pipe installations and used a concrete pump to fill the floors, leaving always two empty levels between the tower crane and the workforce for safety reasons.

When the building gained in height, the Edins Byggkranar erectors team jacked up the 21 LC 750 crane with the hydraulic cage up to 78 meters. To reach the final height of 132 metres, the 21 LC 750 had to be tied once to the building, and had to be jacked up four more times. To ensure an optimal performance at such height, and with heavy loads of up to 22 tonnes, the crane was delivered with the optional 110 kW hoist motor that allows speeds of up to 88 metres per minute. Also, although it was not necessary for the Kista tower, Edins Byggkranar ordered the crane with the optional high capacity Lebus drum for 1,450 metres of rope, to be used in upcoming projects.

The 21 LC 750 48t, which dismantled the 16 LC 185 8t in April 2015, remained at the Kista Torn project until March 2016.

Edins Byggkranar is a spin-off company from Edins Kranar AB, which was created in 1972 by Bo Edin. His sons Christer and Patrik took over the company in the mid-2000 and divided the business in two branches: Edins Kranar for the rental of mobile cranes and trucks, and Edins Byggkranar for the rental of tower cranes. Edins Kranar bought its first Linden Comansa tower crane in 1990 and the current rental fleet of Edins Byggkranar includes 30 Linden Comansa tower cranes, with maximum load capacity up to 48 tonnes.

The disassembly of the 21LC750 crane took place in March 2016


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