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RE: "dynamic analysis" for earthquake ?

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Based on the building codes, I would say that an acceptable dynamic
analysis is a response spectrum analysis or a time history analysis that
accounts for multi-modal effects and distribution of masses and
stiffnesses in a dynamic model of the structure.  

The equivalent lateral force method, which is considered to be a static
force design method, could be called a response spectrum analysis based
on the fundamental mode of vibration of an equivalent single degree of
freedom model of the structure. 

And a pushover analysis is considered to be a nonlinear static analysis

William C. Sherman, PE 
(Bill Sherman) 
CDM, Denver, CO
Phone: 303-298-1311
Fax: 303-293-8236
email: shermanwc(--nospam--at)

> -----Original Message-----
> From: Tom Barsh @ Codeware [mailto:tom(--nospam--at)] 
> Sent: Tuesday, June 07, 2005 10:09 AM
> To: seaint(--nospam--at)
> Subject: "dynamic analysis" for earthquake ?
> What qualifies as a "dynamic analysis" for response of a 
> structure to an earthquake?
> If the question is too elementary I will expand. Thank you!
>    Tom Barsh, P.E.
>    Technical Support Engineer
>    Codeware Inc

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