Oval Tower - Head Office, Organon
This tower building with oval shaped floor plan houses the new head office of Organon (The company logo is an oval). The total floor surface amounts to 5,800m2. The structural stability of the building is provided by a rectangular reinforced concrete core in the long axis of the oval. The fascia are supported by the floor's perimeter edge at each level. Columns have been placed close to the floor's edge while a span of 8.5m was achieved throughout the building. Originally consideration was given toward a hollow core slab, which required a cast-in-place oval beam at the perimeter and cast-in-place shoulders at the building's core, versus a BubbleDeck floor that required neither while bearing on the perimeter columns. The BubbleDeck floor was chosen because of the considerably simplified construction, site preparations and the savings on building cost and time. Most of the floors are 280mm while on some levels a 340mm slab was used to accommodate a higher load ratings in these areas. The majority of the floors are monolithic floors requiring no additional finishing.