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Earthquake Resistant Proof Structure
Earthquake Resistant P  
QUESTION: Dear Babak

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 ?.

Awaiting your reply,

Thanks & Regards,
Prashant S Akerkar

ANSWER: Dear Prashant

There is a probability of failure for every human made structure even if it is very small. Then you could never design and construct a structure with 100% of reliability.

Regards
BEH

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

QUESTION: Dear Babak

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: Dear Prashant

For sure, renovation of a structure is quite possible. You can follow the US regulations of the series of FEMA.

Key word: Performance Based Design

Regards
BEH

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

QUESTION: Dear Babak

Thank you.

Are Quality certifications awarded by Civil consulting cos for
Earthquake resistant proofing to Builders ?.

i.e. Quality certification indicating "This Structure
is certified for withstanding earthquake of magnitude 7 by
XYZ Civil Consulting co".

The above is just a example from my end.

Awaiting your reply,

Thanks & Regards,
Prashant S Akerkar

Answer
Dear Prashant

It is quite usual to advertise or reclaim in this way for the earthquake resistance of buildings. The Magnitude cant be at all be a significant parameter because it is related to the earthquake energy in the source of faulting and if it is claimed by a company, then you may have doubt about the level of expertise of the company. Good parameters in this way are PGA ( peak ground acceleration) or intensity which is mentioned in Mercally or even Modified Mercally or the equivalent unit used in Japan. This parameters is related to the response of natural or human made construction under seismic actions.

An appropriate certification would be in these format:

This structure is certified to withstand 0.4g of PGA without any risk to human life

This structure is certified to withstand 0.4g of PGA without any risk to serviceability( without any loss of operation)

This structure is certified to withstand earthquakes of IX in MMI (Modified Mercalli Intensity) without any risk to human life



Regards
BEH

Civil Engineering

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Babak Esmailzadeh Hakimi

Expertise

I can answer questions in Structural Engineering, Earthquake Engineering, Project Management and Project Control topics!

Experience

I am experienced in the area of earthquake engineering in electrical power industry, i.e. Lifeline Earthquake Engineering. My focus has been on structural seismic design of power installations. Recently I have got involved in project management in the category of constructional engineering.

Organizations
Sinam Consulting Engineers Co.

Education/Credentials
Bs degree in Civil Engineering from Ferdowsi University ,1988, Mashhad Iran, Ms degree in Earthquake Engineering, Sharif University of Technology, 1993, Tehran, Iran

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