Steel Buildings in Europe

Part 2: Concept Design 2 - 21 Figure 3.7 Different beam types used in Kings Place 3.5 Kone Headquarters, Helsinki Figure 3.8 Kone building during construction and completed The 18-storey Kone headquarters build ing in Espoo near Helsinki used a composite fl oor structure and had a fully glazed façade. The total floo r area was 9800 m 2 . Stability was provide d by a large concrete co re loca ted on th e south face of the building, as shown in Figure 3.8. The structure was innovative in its construction because the floor structure was prefabricated as large cassettes and lifte d into place, as shown in Figure 3.9. The span of the floor grid was 12,1 m for the primary beams and 8,1 m for the secondary beams. A minimum number of steel columns were used internally. The east and west facing walls have full height glass panels. The cladding was configured as a double facade to pro vide shading and also to act as a th ermal barrier. The concrete core next to the south facing wall reduced the heat gain on this façade.