Cranes are supposed to withstand 140 mph winds. So what caused the deadly Dallas crane collapse?

Apr 13, 2009
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The TL;DR version -- quote from the article: “I saw video where you can see the crane when it is blowing over, and you can see another crane further back,” McGettigan said. “The telltale sign is you look at the other crane and the other crane is pointed in the direction the wind is blowing. The crane that went down was perpendicular to the wind. Tower cranes are not designed to take that force.” McGettigan said he suspects the crane operator either forgot to weather vane the crane or he thought he did, but something went wrong and nobody weather vane tested it to ensure the crane could withstand heavy winds."