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A steel tower with aerofoil outriggers

The steel structure of the 120mhigh tower derives its form from principles evolved in the design of aircraft wings. The main shaft, a triangulated framework of 168.3mm diameter tubular columns braced with 100 x 100mm square hollow section members, is 'teardrop'-shaped on plan; it encloses a steel circular staircase supported by a central 139.7mm diameter steel column and enclosed with a cylindrical tube of silver anodised aluminium panels.

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