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As large parts of the nation recover from nature’s one-two punch—an earthquake followed by Hurricane Irene—building researchers from the National Institute of Standards and Technology (NIST) warn that a double whammy of seismic and wind hazards can increase the risk of structural damage to as much as twice the level implied in building codes.

https://www.nist.gov/news-events/news/2011/09/double-jeopardy-building-codes-may-underestimate-risks-due-multiple-hazards