A delicate, sweeping glass roof spans over the streets and the central square. This roof consists of eight separate segments that slide over one another where they meet. Half of the approx. 3,700sqm of glass is to be found in the imposing main dome which spans 48m across the central square. It is here that the biggest challenge faced by seele on this project becomes readily apparent: The fully welded steel structure is supported on four different buildings, each with its own particular expansion behaviour. The situation is similar for the seven smaller roofs. All the roofs handle the movement through a combination of fixed and movable bearings. The latter can accommodate axial rotation, displacement and deflection. Added to this is the complex water run-off situation that had to be considered in the design work. The lack of space on this city-centre site and the fact that no two parts are identical called for seele’s efficient logistics management to ensure a successful project.
Project images: © Land Securities, Giles Rocholl