For the construction of the 120m (35 floors) Kirsta Tower, construction company JM Sverige received two brand new Linden Comansa tower cranes in September 2013.
The first crane to arrive at the site was a 48t Linden Comansa 21LC750, erected with 50m of both radius and height. This flat-top tower crane helped to assemble the second Linden Comansa tower crane, a 8t 16LC185, with 35m radius and height of 32m.
Both cranes were initially used in the construction of thick concrete walls in the basement of the building. When this task was completed, the 21LC750 was used for the rising and positioning of the prefab walls that shape the building.
According to Linden Comansa, the 21LC750 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 height, the Edins Byggkranar erectors team jacked up this crane with the hydraulic cage to 78m.
To reach the final height of 132m, the 21LC750 had to be tied once to the building, and had to be jacked up four additional times.
The crane was delivered with an optional 110kW hoist motor which allows it to reach hoist speeds 88m per minute.
The crane was ordered with an optional high capacity Lebus drum for 1,450m of rope, which will be used by the construction company in upcoming projects.
The 21LC750 48t, which dismantled the 16LC185 8t in April 2015, remained at the Kista Torn project until March 2016.
