Which mechanism caused the Tay Bridge disaster of 1879 due to deficiencies in cast iron columns?

💡 Explanation

When subjected to repeated train loads and wind, fatigue cracking initiated in the poorly designed and cast iron columns because of stress concentrations, ultimately leading to structural failure. Therefore progressive cracking resulted, rather than shear, buckling, or corrosion which require different environmental/mechanical conditions and failure mechanisms.

• Which agricultural benefit resulted when Aztec chinampas used "sunken gardens" methodology in shallow lake Texcoco?
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• Which corrosion mechanism accelerated failure of early Mesopotamian bronze agricultural tools in alkaline soil?
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