How Base Isolation Reduces Shaking
Softening the shaking between building and ground
0:57 · 720p · With AI narration and captions. This sample was made with the same system as this service.
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How Base Isolation Works
Base isolation is one way buildings reduce the shaking from earthquakes.
Resistant vs. Isolated
An ordinary quake-resistant building is built strong to withstand shaking, but it sways hard along with the ground. A base-isolated building sways slowly and only a little.
Under the Building
A base-isolated building has rubber bearings and dampers between the building and its foundation.
Inside a Rubber Bearing
A rubber bearing is made of rubber and steel plates, stacked alternately. It firmly supports the building's weight, but flexes softly sideways.
Less Shaking Gets In
Even when the ground shakes quickly, the rubber flexes sideways and the building moves slowly and only a little, so there is less shaking inside.
What the Damper Does
Dampers absorb the energy of the shaking, keeping the building from moving too much.
Keeping the Shaking Out
Base isolation protects the people and things inside by separating the building from the ground's shaking.
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