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Earthquake Resistant Proof Structure
Earthquake Resistant P  
QUESTION: Dear Prof Cleggsan

http://en.wikipedia.org/wiki/Earthquake
http://en.wikipedia.org/wiki/Earthquake_resistant_structures‎
http://www.agiweb.org/education/aapg/invest/invest13.html
http://en.wikipedia.org/wiki/Seismology
http://en.wikipedia.org/wiki/Seismometer
http://www.iris.edu/hq/files/publications/brochures_onepagers/doc/OnePager7.pdf
http://www.youtube.com/watch?v=URC7zHeypWw‎
http://www.youtube.com/watch?v=-N_Q6Q-3o7M‎
http://www.youtube.com/watch?v=9X-js9gXSME
http://www.youtube.com/watch?v=tq9_UAcKq3M‎
http://www.bbc.co.uk/news/world-asia-pacific-15033972‎
http://www.buffalo.edu/news/10380‎
http://www.strongtie.com/about/research/capstone.html
http://www.sciencedaily.com/videos/2007/0112-earthquake_test_building_better_hom
http://www.nkanzai.co.jp/en/building/best/diagnosis2.html
http://www.geo.mtu.edu/UPSeis/waves.html‎
http://www.reidsteel.com/information/earthquake_resistant_building.htm
http://www.iris.edu/hq/files/programs/education_and_outreach/retm/tm_100112_hait

Is it possible to build 100 % Earthquake resistant proof buildings and structures ?.

Thanks & Regards,
Prashant S Akerkar

ANSWER: Here you are sending me another question that does not relate to my field of expertise.

And, in this case the question is hypothetical and subjective in nature (as opposed to objective where in an objective investigation is one that a third party can duplicate an experiment or practice and obtain the same results repeatidly).

Further there would be a wide divergence of opinion about how to define the earthquake test field and how to measure the shaking forces and how to specify the buildings structure.  For example earthquakes come in shaking type and vertical movement type.  Defining the building safety level requires a body of specifications.  For example if the building shakes and all the windows fall out but the rest of the entire structure still stands and meets all other parameters of the test requirement.

So, I want to answer your question this way:  Very earthquake proof building strategies are very effective in maintaining integrity through an earthquake experience but we cannot know for certain how a building will behave exactly and precisely due to the very great variations in earthquake forces and there effect on a wide variety of structures.  

Most building, roads, train tracks or bridges are built to handle the most severe conditions historically witnessed and recorded times some over design loading.  For example, many bridges are designed to meet conditions 5 times greater than the worst case to be expected.  This is a fair preventive method in the design criterion.

See:  https://en.wikipedia.org/wiki/Earthquake_engineering

Hope this helps.



---------- FOLLOW-UP ----------

QUESTION: Dear Prof Cleggsan

Thank you.

Is it possible to renovate/redevelop already built structures viz buildings,
bridges etc for earthquake resistant proofing ?.

i.e. Structures which are more than 3 years old.

Awaiting your reply,

Thanks & Regards,
Prashant S Akerkar

Answer
Once again, this is not my area of expertise. And this is not an engineering or electronics topic and does not fit the purpose of this allexpert column.

However, many cities throughout the world upgrade their building codes requiring older buildings to be upgraded to meet new earthquake specifications.  Some buildings are condemned by authority authorized inspectors and must be torn down if they cannot meet the new requirements.

Wishing you the best in your research.  

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cleggsan

Expertise

All technical areas of Electronics Engineering.

Experience

BSEE, MBA, Design, R&D, University Research.
Senior Life Member of IEEE. Life Fellow of AES.

Organizations
IEEE, Consumer Electronics Society, Audio Engineering Society.
Broad teaching experience; work experience mostly in consumer electronics and conversion from analog to digital technologies. Pioneer in digital audio at all levels.

Education/Credentials
BSEE (Equiv) BYU BSEE University of North Dakota MSBA (MBA) Illinois State University Graduate Studies in Computer Science - Bradley University Graduate Studies - Ohio University Graduate Studies - University of Missouri Kansas City DeVry Tech - Electronics

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