A triple start helical involute. This tightens from an initial radius of just over 5 Metres and sweeps up to the antena, just over 13 Metres from the ground. |
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The mast is on the axis of a well used public footpath, making it very much something you pass through and underneath. |
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It was decided to take this concept foreward for further development. Initially three legs were evenly spaced around the circle. Buro Happold's advice was that the legs should be 'tied' lower down the structure, if we were to acheive the necissary rigidity. |