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Earthquake Resistant Proof Structure
Earthquake Resistant P  
QUESTION: Dear Manoharan

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 Mr. Prashant S Akerkar
Thanks for your question
100 % resistant buildings from earth quake would be impossible. However failures or damages can be avoided,if not at least the damages and loss of lives can be minimized.
Some of the doís and dontís that we can follow
Doís
a)Simple planning.
b) Involve structural engineer.
c) Convex shapes.
d) Less slenderness ratio.
e) Aspect ratio near unity.
f) Proper placement of core shaft.
Doníts
a)Irregular shapes L,T and H .
b) Long cantilevers, overhangs.
c) Concave shapes.
d) Abrupt change in plan/elevation.
e) Plaza type planning.
f) Heavy malls at roof.
Structural design stage-
Doís
a)Conduct soil investigations.
b) Moment resisting frame.
(Combination of MRF with wall/bearing/ shear walls).
c) Strong column and weak beam.
d) Minimum column size.(230 mm).
e)Ductile detailing is essential.
Doníts-
Simply supported beams.
a) Parking floor without any shear
Wall/bracing.
b) Floating columns.
c) Neglect effect of infill walls.
d) Lift shaft with masonry.
Construction stage-
Doís
a)Proper testing of all materials.
b) Vibrated concrete for column. near column Ėbeam junction.
c) Grade of concrete in column Ė beam junction has to be that of column.
Donítsa)
Lapping of column/beam bars
b) Never hide any construction defect.
The detailed information can be obtained from
Design Principles for Earthquake Resistant Buildings and Post Earthquake Study by Structural
Engineering Perspectives, by N.K. Dhapekar, S.M. Awatade, N.N. Bhaiswar, K.S. Shelke, M.D. Mehere.
Thanks,
Kothandapani Manoharan


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

QUESTION: Dear Manoharan

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 Mr. Prashant S Akerkar
Thanks for your question.
Yes it Is  possible to renovate/redevelop already built structures viz buildings,bridges etc for earthquake resistant proofing ?.
Where the addition is not independent, the addition and existing structure acting together must meet the new building code requirements for earthquake loads.
For further details you may please refer to http://ncsea.com/downloads/groups/advocacy_code/Structural_Code_Requirements_wit
And their codes and requirements.
Thanks,
Kothandapani Manoharan

Geology

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Manoharan Kothandapani alias Manoharan

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questions fron hydrogeology, Coal Bed Methane and petroleum geology

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M.Sc.,(Geology), M.Tech(Petroleum Exploration)

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