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An inquiry into the collapse of the Tay bridge found several reasons for the collapse of what was then the longest rail bridge in the world:

  • The piers and wind bracing had not been properly constructed.
  • Engineer Sir Thomas Bouch was largely held responsible for not making sufficient allowance for wind loading.
  • The cylindrical cast iron columns which supported the longest spans of the bridge, each of which was 75m in height, were found to be of insufficient quality for their purpose.
  • The final straw leading to the collapse was a violent storm on the evening of 28 December 1879, which caused the central navigation spans of the bridge to collapse into the Firth of Tay at Dundee.
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15y ago

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