Why do buildings fall in earthquakes? - Vicki V. May
1,788,777 Views
22,230 Questions Answered
TEDEd Animation
Let’s Begin…
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. But why do buildings collapse in an earthquake? And how can it be prevented? Vicki V. May explains the physics of why it is not the sturdiest buildings, but the smartest, that will remain standing.
Structural engineers consult with geologists to help predict the expected frequency of earthquake motions at a given site. They use this information to then make sure that buildings on that site do not have the same natural frequency as the expected earthquake input motions to avoid setting up resonance, in which the displacements of the building are amplified. What are some different strategies you might use to change the frequency of a building? Is it better to design buildings that are stiffer or more flexible?
Sign in to answer questionAbout TED-Ed Animations
TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »
Meet The Creators
- Educator Vicki V. May
- Director Adam Comiskey
- Animator Ashleigh Campbell
- Artist Adam Southey
- Script Editor Alex Gendler
- Narrator Addison Anderson
