This week we continue responding to the reader question, “What kind of home can withstand fire, hurricanes, floods, heat domes & polar vortex?” Before we get into design considerations, let’s look at modes of failure. From my research, hurricanes and tornadoes function similarly with similar wind speeds. Their difference is size and duration, of course. Let’s look at the scales used for hurricanes (Saffir-Simpson) and tornadoes (Enhanced Fujita). Tornado and Hurricane Engines Low-pressure systems, tornadoes, and hurricanes all spin counterclockwise in the northern hemisphere, and they all represent rising air. Rising air results in cloud formation (condensation), and if the…
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We interrupt this rant for this special announcement. Our cold spring in the northern plains is wreaking havoc in the form of tornadoes in the southern and middle parts of the country. I think the weather phenomena had a lot to do with my interest in mechanical engineering. Growing up on the farm in the flatlands, I had seen a great many black clouds approaching on the horizon. As they drew closer, they would either brighten to a lighter gray and rain, or they get ugly. If the approach is led by a dark band of clouds followed by blue-green…
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