Question

In terms of earthquake safety, why is it better for a building to be able to bend slightly instead of being built to be perfectly stiff?

Accepted Answer

When an earthquake shakes the ground, it sends waves of energy into a building. If a building is perfectly stiff, it cannot move with those waves. It acts like a dry twig that snaps when you bend it because it has no way to absorb the force. By being able to bend slightly, a building acts more like a piece of rubber. It uses that flexibility to soak up the energy from the ground shaking instead of fighting against it. This movement is called ductility, which is just a fancy way of saying the building can stretch or bend without breaking. If the building stays rigid, all that violent energy stays trapped in the structure, which eventually causes the materials to crack or crumble. A flexible building sways back and forth, turning the dangerous shaking energy into harmless movement, which keeps the structure standing safely.

In terms of earthquake safety, why is it better for a building to be able to bend slightly instead of being built to be perfectly stiff?

When an earthquake shakes the ground, it sends waves of energy into a building. If a building is perfectly stiff, it cannot move with those waves. It acts like a dry twig that snaps when you bend it because it has no way to absorb the force. By bein....

Community Answers

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In terms of earthquake safety, why is it better for a building to be able to bend slightly instead of being built to be perfectly stiff?

When an earthquake shakes the ground, it sends waves of energy into a building. If a building is perfectly stiff, it cannot move with those waves. It acts like a dry twig that snaps when you bend it because it has no way to absorb the force. By bein....

Community Answers