Social project

Earthquake

Done by : Pavan

12th Jan 2010 : A Case Study of HAITI

Earthquake, Caribbean country.

CANTERBURY EARTHQUAKE

Because this aftershock was centred

very close to Christchurch, it was much

more destructive and resulted in the

death of 185 people

Some damaging aftershocks followed the main

event, the strongest of which was a magnitude

6.3 shock that occurred on 22 February 2011

7.1 magnitude

4:35am on 4th september 2010

Lasted for 40 seconds

Many buildings were damaged

4th sep 2010 : A Case Study

of Canterbury Earthquake

Location of the epicentre

It is the vibration of the ground due to the sudden release of energy by the

breaking and shifting of rock beneath the Earth’s surface and it create

Seismic waves

The Earths crust near tectonic plates edges are forced to bend,compress

and stretch due to the interal forces with in the earth causing earthquakes

pavan

Seismic waves are waves of energy that travel through the

Earth’s layers and are a result of an earthquake

Seismic wave fields are recorded by a seismometer

Pavan

Earth quakes may cause by movement of plate boundaries

In some cases earth quakes may be man made -

Earth quakes are produced when there are bombings such as an atomic

Bomb or some strong-impact bombs

Gas pipes that expand under ground also cause shock waves to be radiated

out

The ground movements caused by earthquakes can have

several types of damaging effects. Some of the major

effects are:

1. Ground shaking, i.e. back-and-forth motion of the

ground, caused by the passing vibratory waves through

the ground.

2. Soil failures, such as liquefaction and landslides, caused by

shaking;

3. Surface fault ruptures, such as cracks, vertical shifts, etc.

4. Tidal waves (tsunamis), i.e. large waves on the surface of bodies

of water that can cause major

The primary objective of earthquake resistant design is

to prevent collapse during earthquakes thus minimising

the risk of death or injury to people in or around the

buildings. There are certain features which if taken into

consideration at the stage of architectural planning and

structural design of buildings ,their performance during

earthquakes will be appreciably improved

Prudvi

★ The building should have a simple rectangular plan.

★ Long walls should be supported by Reinforced Concrete columns

★ Large buildings having plans with shapes like T, L, U and X

should preferably be separated into rectangular blocks by providing

gaps in between.

Vamsi

If Shaking Begins

Drop down; take cover under a desk or table and hold on.

Stay indoors until the shaking stops and be sure it's safe to

exit.

Stay away from bookcases or furniture that can fall on you.

Stay away from windows. In a high-rise building, expect the fire

alarms and sprinklers to go off during a quake.

If you are outdoors, find a clear spot away from buildings,

trees, and power lines. Drop to the ground.

If you are in a car, slow down and drive to a clear place. Stay in

the car until the shaking stops.

Kayhaan