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Empirical Expression for T of Tall Buildings and Minimum Sei
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zubairmeer1
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Joined: 27 Feb 2010
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Location: Hyderabad
PostPosted: Tue Dec 04, 2012 1:04 pm    Post subject: Reply with quote
Dear Sefians

I Agree with yogesh Sir... there should be some minimum limit as we cannot 100% exactly model a structure..yogesh sir has already listed the difficulties in modelling...

Also The Time Period stipulated by code is based upon tests by Dr Chopra ( this i read in IC sir's post in the forum)... Off course not valid for irregular structures...

regards

Meer
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Yogesh.Pisal
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Joined: 18 May 2008
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PostPosted: Wed Dec 05, 2012 4:15 am    Post subject: Reply with quote
Thanks Meer,

Many times I saw the industrial buildings with time period 2 to 3 seconds, hence base shear use to be as low as 2 to 3 % and sometimes even less than this. Same may be the case with tall buildings.

Hence, I feel that code should direct to minimum percentage of base shear which should be considered for design.

Regards,
Yogesh Pisal
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