The main frame of the building tower rising from the ground. The four column clusters that support the building, each composed of three 2.5m x 2.5m and on 1.2m x 0.8m steel columns, can be clearly seen here. One special feature in the structural design of this building is that it does not consist of a reinforced concrete central core, which is quite unusual in buildings of similar type. The whole building is based on the design concept of a gigantic space frame in order to achieve the necessary rigidity in structure.