The floor plan is based on five building wings around a small circular core for elevators, sanitary and technical rooms. The five building corners or wings accommodate offices and meeting rooms. The twisted floors give the tower its special dynamics. Each floor slab is twisted by 0.82 degrees towards the subjacent floor slab resulting in the tower as a whole twisting 89 degrees from base to tip. Nevertheless, the tower with its gross floor area of around 163,000 sqm (1.7 million sq ft) seems to uniformly and elegantly spiral toward the sky. Such effect can be achieved with cold formed glass façades, with the glass bent by 40 mm and elegantly following the dynamic twist of the tower without any disturbing corners and edges.
The 73,240 sqm (788,350 sq ft) exterior façade with a thermal insulation index of 0.66 W/(m² K) and a noise insulation index of Rw = 41 dB, comprises of approx. 2.7 m x 4.2 m parallelogram shaped units with glass panes cold-bent up to 40 mm while the 25,410 sqm (273,500 sq ft) interior façades for the atria are mainly composed of rectangular units.
Above the observation deck, as from a height of 360 m, the last floors have been clad with different steel façade types, a stainless steel mesh and stainless steel profiles, with an elegant design as transparent as glass. For this wind-permeable spire, extensive wind tunnel tests have been performed. Furthermore, a wind testing expertise has been carried out by RWDI in Toronto in order to prevent icing such as icicles, build-up of snow and ice, etc. at various temperatures.