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Chances for collapse of modern houses in earthquake?

Tue Nov 03, 2015Total posts : 2
Techman
Techman
Join date: Nov 2015
Topic: Chances for collapse of modern houses in earthquake?

I'm curious to know the chances of complete collapse of single storey houses constructed following the modern engineering practices ie. Dry pack rubble foundation+RCC belt+Clay/Concrete brick wall+RCC lintel+RCC roof. 

How strong earthquakes ie. Richter scale those houses can withstand? 

Any idea about how many such houses collapsed in recent earthquakes in India? 

Tue Nov 03, 2015Post  #1
S L Gupta (Civil Engg)
S L Gupta (Civil Engg)

Join date: Mar 2008
Dear Tack man
Earthquake can strike suddenly with very little warning. One minute you may be enjoying the company of your friends and family and the next minute the floor beneath you begins to shake. You cannot stop nature, but you can learn how to react during an earthquake. Single story building have very very little impact of earth quack and negligible chance of complete demolition after RCC belt, lintel etc..
       
  • The outer shell of the earth called lithosphere is broken into plates which are in constant motion, moving at about the same speed that fingernail grows. 

  • Sometimes when the plates rub each other, they stick a little and do not slide smoothly. When the plates push against each other without moving, the pressure is built up.

  • When the pressure becomes more than the edge of the plates can stand, a small part of the plates breaks or readjusts by moving up, down, or sideways. 

  • This fracturing, crumbling, or readjustment of the plates releases huge amount of energy and causes earthquake. 

  • Earthquakes are due to the sudden release of the tremendous amount of the energy within the earth by the sudden movement at a point called focus. 

  • The resulting shock sends out longitudinal and transverse vibrations in all directions in the form of the energy waves which are called Seismic waves recorded on Seismographs. 

  • Thus the earthquake affects the buildings by destroying or dislocating of the walls, pillars or roofs 


 
 
 

 
Tue Nov 03, 2015Post  #2
JAI PRAKASH
JAI PRAKASH

Join date: May 2014
Modern construction is using columns to avoid the same.

 

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