The final scheme (after the abandonment of initial plans for a hotel) was a twelve-storey office building (two floors below ground level), its main floors canted out over a void which is infilled with a dramatic glazed roof, lighting a public basement area which contains restaurants and bars. The roof is hung off the main structure. The frame, engineered in line with local fire safety and seismic protection regulations, is a composite structure of steel and concrete. As usual, lift, stairs and other services are concentrated in a strongly modeled tower, which terminates in a viewing platform above a penthouse apartment.’

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