"The goal was to let people experience the whole atmosphere of this historic building, from floor to ceiling. We also wanted to have the old and the new come together in a natural way," said AIX Architectural Conservator Johan Rittsél. 

Stockholm Central Station has installed a set of three Boon Edam all glass, 3-winged Crystal Tourniket automatic revolving doors, along with integrated heaters. Each door can accommodate 1,740 persons per minute in both directions in addition to being able to manage sustainable climate-control. The Crystal Tourniket doors also include collapsible door wings, which create an easy escape route in the event of an emergency, ideal for such a large public area.

After considering rebuilding or replacing the original 2-winged revolving doors or installing an airlock solution with sliding doors, the decision makers chose to install three, full glass, 3-winged revolving doors. This entrance selection complemented the classic architecture of the original entrance hall while letting in as much daylight as possible.

"Boon Edam was very focused on finding the right door solution for us, even taking us on research tours so we could try out different door solutions. Perhaps the most important thing was that we did not try to copy anything, instead we used our research to create the perfect solution for our specific circumstances," said Anne Teresiak, an architect with AIX.

One of the primary challenges designers faced was concealing the entrance’s technical aspects so as not to interfere with the overall user experience and impression of the entrance. The motors were built into the floor, the control boxes were designed to be situated at a lower level in the building, and the vertical heaters were integrated into the centerline of the doors.

Peter Appelgren, representing the station owners, Jernhusen, said, "The revolving doors are now an integrated part of the entrance hall. We've managed to capture the ambience of the old, while still making sure we meet the modern demands of energy savings as well as maintaining high-volume traffic flow."