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Turning Torso, Malmö, Sweden
From a sculpture to a building
Architectural vision efficiently realised using PERI ACS self-climbing technology
Over the past few years, Malmö, Sweden has gained a reputation as a mecca for fans of architecture. Similar to Germany''s Hamburg where a lively residential area, "Speicherstadt", has been created from unused and rundown warehouses, Malmö has a similar project that is also nearing completion. In an area where just 40 years ago ships were being launched and cranes busily loaded and unloaded vessels of all sorts, a new city district is being developed. This area will provide approximately 30,000 people with a modern environment in which to work and live.
Visible for miles around, this extraordinary, high-rise building, located in the city''s Western Harbor, is quickly becoming one of the city''s landmarks. The Turning Torso was designed by renowned Spanish architect, Santiago Calatrava. It is based on one of his sculptures which was inspired by the human form in motion.
The entire building turns 90° as it climbs upwards over nine blocks or cubes, each of which consists of five floors. This very impressive structure contains 54 storeys and reaches a dizzying height of 190 meters. Office facilities have been installed in the first two cubes and, from the third cube up, 150 apartments totaling 15,000 m² are available. As the building increases in height, the wall thickness of the circular core tapers from a maximum 2.00 m in the ground plan to 40 cm at the top.
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| PERI Systems In Use |
RUNDFLEX Circular Wall Formwork
GRV Circular Wall Formwork
ACS P Self Climbing System
UNIPORTAL Tableforms
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The Swedish construction company, NCC Construction AB in Malmö, commissioned the Weissenhorn-based formwork and scaffolding manufacturer, PERI, to develop a cost-effective formwork concept and deliver the required systems for the project. PERI engineers designed the formwork to handle heights of 4.00 m which meant all floor heights – 3.18 m standard areas up to a maximum 3.89 m – have been completed without the need of time-consuming height adjustment. The ACS-P (P = platform) self-climbing scaffold concept allowed concreting of the ring wall on the main level and the re-tightening of the internal core walls one floor below. The ACS-P weighs over 110 tonnes and is anchored on twelve fixing points. A concrete placing boom has been installed on its own climbing scaffold using four fixing points in the core.
The self-climbing scaffolds are interlocked and are climbed together. A special control unit, which monitors this procedure, prevents the scaffold units from colliding.
All formwork elements are suspended on a distribution frame via a crane crab. Slabs and walls are cast in one pour. Through the use of PERI UNIPORTAL slab tables for two standard floors and one intermediate arched floor, pre-determined concrete cycles can easily be maintained.
Construction crews need nine days to complete a standard floor which means work is progressing exactly according to plan. The contractors are very satisfied with the formwork technology from Weissenhorn as site manager, Jörgen Holm, commented: “We received the best solution from PERI. All work could be carried out on safe and spacious levels. Shuttering and striking as well as climbing functioned extremely well.” |
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PERI Press Release July 2004
PERI Handbook 2005 Formwork
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