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RE: Response Spectrum Analysis

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Thanks for the suggestions.

> ----------
> From: 	Ali Bakhshi[SMTP:bakhshi(--nospam--at)ipc.hiroshima-u.ac.jp]
> Reply To: 	seaint(--nospam--at)seaint.org
> Sent: 	Friday, April 02, 1999 4:06 AM
> To: 	seaint(--nospam--at)seaint.org
> Subject: 	Re: Response Spectrum Analysis
> 
> 
> Dear Francis,
> 
> The main problem is how to interpret Rw (or any other parameters related
> to
> ductility factor in various codes) in design. There are many invaluable
> resources which can help you to decide your best solution. I may cite a
> few
> of them here:
> 
> 1.Earthquake design criteria / by G.W. Housner and P.C. Jennings. --
> Earthquake Engineering Research Institute, 1982. -- (Engineering
> monographs
> on earthquake criteria, structural design, and strong motion records ; v.
> 4
> 
> 2. The Seismic design handbook / edited by Farzad Naeim. -- Van Nostrand
> Reinhold, 1989. -- (Structural engineering series)
> 
> 3..ATC-2: an evaluation of a response spectrum approach to seismic design
> of buildings / by Applied Technology Council, for National Science
> Foundation, Research Applied to National Needs Program and National Bureau
> of Standards. -- Repr.. -- ATC], 1981
> 
> 4. Manual of seismic design / James L. Stratta. -- Englewood Cliffs, N.J.
> :
> Prentice-Hall, 1987
> 
> 5. Seismic design of buildings / James Ambrose, Dimitry Vergun. --
> Wiley,1985
> 
> Hope that this suggestion is not to complicate your problem excessively!
> 
> 
> 
> At 03:12 p.m. 99/03/31 +0800, you wrote:
> >I'm having a problem with regards to the seismic analysis of structures
> >using response spectrum analysis. We usually use this dynamic analysis
> for
> >multi-storey structures. For 5 storey-high structures and below, we use
> the
> >UBC minimum lateral force procedure which normally gives a conservative
> >value of EQ forces.
> >
> >With regards to response spectrum analysis, using STAAD or ETABS, there
> is a
> >portion there which requires a a value like the SCALE of the forces. I
> know
> >of some who input on this blindly like using a value of 4.445 or
> something.
> >
> >I commonly use the value obtained from the dynamic base shear divided by
> the
> >base shear from the minimum Lateral Force Procedure of UBC. 
> >
> >Am I right on this or have I missed out some things. I tried to read
> other
> >materials but it doesn't mention the scale to be used? 
> >
> >
> >Any reply, comments and suggestions would be greatly appreciated.
> >
> >Thanks,
> >
> >
> >
> >
> >
> >
> >
> ______________________________
> Ali Bakhshi, Dr. of Eng.
> Earthquake Engineering  Lab
> Dept of Structural Eng.
> Hiroshima University
> TEL:  +81-824-24-7862
> FAX:  +81-824-24-7796
> E-mail:  bakhshi(--nospam--at)ipc.hiroshima-u.ac.jp
> ______________________________
> 
> 
>