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Tietgen hall of residence in Ørestad, Denmark

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The Tietgen hall of residence in Ørestad is designed by architects Lundgaard and Tranberg. The building's circular form makes it quite unique and an architectural attraction in Ørestad.

The new hall of residence is designed as a circular building with seven floors which encircle a green courtyard.

The circular shape is intersected by five vertical incisions. The five incisions divide the building visually and functionally into sections. The passages between the sections provide access to the courtyard and the floors of the building.  

A structural challenge

The circular structure includes 45 two-storey concrete cantilevered boxes in three different sizes containing kitchens, common rooms and utility rooms. The boxes containing kitchens are the biggest with a free span of 8 meters, weighing 250 tonnes when fully loaded.  

COWI solved this structural challenge with the help of innovative thinking and the free cantilevering construction method known from bridge building. The principle is quite simple and makes scaffolding unnecessary thus saving time and money in the construction phase.  

The building method is inspired by Dutch building but instead of using light steel structures and plaster walls like in Holland concrete was chosen because it is less susceptible to vibration and has far better insulation properties.

A more effective solution

Concrete wall elements are lifted into place on a pre-cast shelf and fastened with high-strength steel cables anchored in the main building. Subsequently slabs are cast between the walls. When making kitchens the procedure is repeated until three elements have been added. Common rooms consist of two elements and utility rooms of only one. Finally the boxes are clad in golden tombak metal plates (an alloy of copper and zink) and equipped with a glass front.  

The result is spectacular and because COWI has developed an extremely rational and effective building method, customising technology from bridge building and avoiding scaffolding, the cost and timeframe for construction has been significantly reduced.

LAST UPDATED: 29.02.2016