Give scientific reasons.

The foundation of earthquake-proof building is separated from other land.

As science stands now, predicting the precise location, time and magnitude of earthquakes is not possible. However, the regions that are more vulnerable to quakes are well known. After all, earthquakes do not kill, unsafe buildings do. The extent of damage to buildings depends not only on the magnitude of the earthquake, but also on the type of construction practice followed in a particular area.

There is much we can do to protect our buildings and thus save lives. It is possible today to assess the vulnerability of any building to earthquake, and, wherever possible, to undertake retrofit measures to make it safe.

When an earthquake strikes, the ground shakes violently, depending on several factors like the magnitude, the depth of the focus and the nature of soil. In some rare cases involving sandy soils in the presence of ground water, the soil can suddenly behave like quicksand causing buildings to sink or tilt and collapse. In such regions, buildings should be either supported on pile foundations resting on hard strata or should be constructed after suitable ground improvement measures are undertaken.