JBTC2.3

toc

Back to home page

Notes2.3

 * liquefaction**- when the earthquakes shaking turns soft soil loose into mud
 * aftershock**- a small earthquake that occurs after a big earthquake
 * tsunami**- when earthquakes happen underwater it causes big waves
 * base- isolated building**- a building designed to reduce the energy that reaches the building during an earthquake

How Earthquake Cause Damage

 * local soil condition
 * lose soil shakes more vilently than solid rock
 * liquefactition
 * liquefaction turns moist soil into watery mud and cracks
 * buildings may sink into the liquid mud
 * aftershocks
 * aftershocks is are small earthquakes caused by a mager earthquake
 * tunamis
 * tunamis are caused by underwater earthquakes
 * some tunamis are the hight of six-story building

Making Buildings Safer

 * new buildings must be more stonger and flexible
 * choice of location
 * **do nots build buildings on:**
 * steep slopes
 * steep slopes may cause landslides
 * filled land
 * filled land shakes more violently
 * near faults
 * earthquakes may occur at any time
 * **safe to build buildings on** **:**
 * away from faults
 * earthquakes may be less violent
 * construction method

Protecting Yourself During an Earthquake

 * the main danger is falling objects and flying glass
 * if there are table or desks, get under it quickly, and hold it steady
 * if you don't have a desk, go to a inner wall and hold your head