As a result, today's structural designs incorporate additional reinforcement in these key places. Most structures can be designed to survive hurricane damage and wind speeds of up to 170 mph! However, it is important that you test your structure's resistance before any major storms approach so you know what kind of damage could be done. In addition to the speed limit, most buildings are also required by law to have some form of impact resistance. This protects people from being injured if a window is broken by falling debris. The American National Standards Institute has published standards for high-speed wind resistance for buildings, but they vary based on location and design criteria. These guidelines should help determine how strong a metal building can be when placed in high-speed winds. For example, if a building site is 20 miles away from a town with a 100-year storm event rate, then it can be designed to with stand winds up to 170 miles per hour. But if the site is near a town with a 1-million-year storm event rate, then it should be able to withstand winds up to 190 miles per hour.