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== Earthquake-proofing ==
== Earthquake-proofing ==
{{main|Earthquake engineering}}
{{main|Earthquake engineering}}
Earthquake-proof buildings are constructed to withstand the destructive force of an earthquake. This depends upon its type of construction, shape, [[mass]] distribution, and [[rigid|rigidity]]. Different combinations are used. Square, rectangular, and shell-shaped buildings can withstand earthquakes better than [[skyscraper]]s. To reduce stress, a building's ground floor can be supported by extremely rigid, empty columns, while the rest of the building is supported by flexible columns inside the empty columns. Another method is to use rollers or rubber pads to separate the base columns from the ground, allowing the columns to shake parallel to each other during an earthquake.
Earthquake-proof buildings are constructed to withstand the destructive force of an earthquake. This depends upon its type of construction, shape, [[mass]] distribution, and [[rigid|rigidity]]. Different combinations are used. Square, rectangular, and shell-shaped buildings can withstand earthquakes better than [[skyscraper]]s. To reduce stress, a building's ground floor can be supported by extremely rigid, empty columns, while the rest of the building is supported by flexible columns inside the empty columns. Another method is to use rollers or rubber pads to separate the base columns from the ground, allowing the columns to shake parallel to each other during an earthquake.
To help prevent a roof from collapsing, builders make the roof out of light-weight materials. Outdoor walls are made with stronger and more reinforced materials such as steel or [[reinforced concrete]]. During an earthquake, flexible windows may help hold the windows together so they don't break.
To help prevent a roof from collapsing, builders make the roof out of light-weight materials. Outdoor walls are made with stronger and more reinforced materials such as steel or [[reinforced concrete]]. During an earthquake, flexible windows may help hold the windows together so they don't break.
{{seealso|1976 Tangshan earthquake}}
== EarthquakeEarthquake Clusters Media ==
== Earthquake Media ==
<gallery widths='160px' heights='100%' mode='traditional' caption=''>
<gallery widths='160px' heights='100%' mode='traditional' caption=''>
File:Quake epicenters 1963-98.png|Earthquake [[epicenter]]s occur mostly along tectonic plate boundaries, especially on the Pacific [[Ring of Fire]].
File:Quake epicenters 1963-98.png|Earthquake [[epicenter]]s occur mostly along [[Plate tectonics|tectonic plate]] boundaries, especially on the Pacific [[Ring of Fire]].
File:Global plate motion 2008-04-17.jpg|Global plate tectonic movement
File:Global plate motion 2008-04-17.jpg|Global plate tectonic movement