Why do buildings fall in earthquakes? - Vicki V. May
View full lesson: http://ed.ted.com/lessons/why-do-buildings-fall-in-earthquakes-vicki-v-may Earthquakes have always been a terrifying phenomenon, and they've become more deadly as our cities...
========== Earthquakes have always been
a terrifying phenomenon, and they've become more deadly
as our cities have grown, with collapsing buildings posing
one of the largest risks. Why do buildings collapse
in an earthquake, and how can it be prevented? If you've watched a lot of disaster films, you might have the idea that building collapse is caused directly
by the ground beneath them shaking violently,
or even splitting apart. But that's not really how it works. For one thing, most buildings
are not located right on a fault line, and the shifting tectonic plates
go much deeper than building foundations. So what's actually going on? In fact, the reality of earthquakes
and their effect on buildings is a bit more complicated. To make sense of...