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Tanks may become vulnerable under even small wind speeds during their construction. First, they do not have the stiffening effect of the roof. Second, they have only partial welding at the base and between courses.


Snap-through failure under moderate winds in General Roca, (Argentinean Patagonia), 2001. Notice gap at the base due to lack of welding.

Tank that failed under moderate winds in Rincon de los Sauces (Argentinean Patagonia) during construction, 2006.


Tank that failed under moderate winds in Iran during construction, 2008.


This research was supported by NSF-CCLI, DUE-0736828: "A Computer-Based Simulated Environment to Learn on Structural Failures in Engineering"