A stainless steel conical spire
The spire is 3m in diameter at its base; it tapers to 150mm in diameter at the tip, which is 120m above ground level. It is fabricated from Grade 316L rolled stainless steel plate with a shot-peened finish. The plate is 20mm thick, except for the lowest 4m of the spire, where it is 35mm thick, and the topmost section, which is 10mm thick.
Subscribe to the AJ from £3 per week
For less than the cost of a pint you can have the magazine, iPad edition, full access to TheAJ.co.uk and the amazing AJBuildingsLibrary.co.uk. Subscribe now and experience architecture from a British perspective. The AJ - it's your journal.