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RE: MEHDI BANAZADEH

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I would like to provide a brief response to the last part of the question. 
The choice of a method for siesmic analysis depends upon the nature and 
importance of the structure. Equivalent static force method, response 
spectrum analysis and the time-history analysis are admittedly increasingly 
sophisticated and elaborate techniques (in that order), requiring 
increasingly greater analysis time as also comparably sophisticated data 
input. A simpler method would be a good choice for an ordinary structure 
and also most suited when the designer does not have the benefit of more 
specific information than the seismic zoning classification and information 
about the site geology. Unusual structures and structures having grave 
consequences of failure do merit a more detailed treatment. In such cases, 
the designer would need to choose a more sophisticated analysis technique, 
which would invariably require more specific data such a response spectrum 
or a time history which can be used as the basis of analysis. But it may be 
important to note that a time-history analysis would not be called a better 
or superior technique when the accompanying time-history does not correctly 
reflect the expected ground shaking. I hope this brief comment helps.

Rizwan Mirza
Consulting Structural Engineer
Lahore, Pakistan


----------
From: 	mehdi banazadeh[SMTP:mehdicivil(--nospam--at)hotmail.com]
Sent: 	Monday, November 01, 1999 12:21 AM
To: 	SEAINT(--nospam--at)seaint.org
Subject: 	MEHDI BANAZADEH

dear SIR:
.
  I am studying EARTHQUAKE ENGINEERING in TEHRAN UNIVERSITY -FACULTY OF
ENGINEERING (MS)
I have MS thesis in economic & scientific evaluation of  last IRANIAN
SEISMIC CODE.
please , send me any information aboat :
1- recently changing in , UBC CODE , SEOAC RECOMMENDATION,......
2-the reasons & purposes of this changing.
3-which of these methods -equivalent static analysis  ,pseudodynamic
analysis method,dynamic analysis method-
   are more economical & more reliable

THANK YOU

______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com





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