To cover the spectator stands and VIP areas of this new stadium in Manaus, a steel roof structure was developed, consisting of diagonally arranged, cantilevering steel box girders, incorporated with a secondary steel structure carrying the membrane ladding. The compression ring at the inner roof edge and the outer tension ring are main parts of the primary steel structure, which is supported by pherical bearings at the base points, resulting a unique load-bearing tructure design.
The selection of this structural system, especially the diagonal arrangement
of roof girders, was made to visualize the architectural concept and to generate a distinctive structural design. The reactions of the roof structure are transferred to the foundation by the reinforced concrete structure with up to two basement levels.
