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Fwd: Re: Pre & Postprocessor for SHAKE91

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I thought there was no advertising on this list service.

Bill Allen

> From: Gustavo Ordonez <shakedit(--nospam--at)>
> To: Structural Engineers Association <seaoc(--nospam--at)>
> Subject: Pre & Postprocessor for SHAKE91
> Date: Monday, March 17, 1997 11:34 AM
> Dear Structural/Geotechnical Engineer:
> SHAKE91 is the most commonly used computer program for the 1-D
> analysis of dynamic soil response.  However, one of the limitations
> of SHAKE91 is the lack of a user-friendly interface for creation of
> the input files, and for the processing of the output data.  To this
> end, we have developed ShakEdit, a Windows 3.1 based editor for
> SHAKE91.  In a typical application, ShakEdit is used to create an
> input file for SHAKE91.  User-friendly screens are provided to input
> the data for the different SHAKE91 options, and then to create an
> input file.  After running SHAKE91 in a DOS window, ShakEdit is 
> used to process the output files generated, resulting in the 
> creation of a series of files containing acceleration and/or
> stress/strain time history data, response and amplification spectrum
> data, strain-compatible soil properties, peak acceleration, maximum
> shear stress, etc..  The results can also be viewed graphically in
> ShakEdit, and the graphics created can be saved/printed for 
> inclusion in documents.
> Additional features of ShakEdit include:
> - A number of Attenuation Relationships for peak horizontal
>   acceleration and velocity with distance; and, for the pseudo
>   acceleration or pseudo velocity response spectrum.
> - Design spectra such as NEHRP and AASHTO.  These spectra and
>   those from attenuation relationships can be plotted
>   simultaneously with the spectra computed with SHAKE91.
> - Computation of cyclic stress ratio (CSR) based on equivalent uniform
>   shear stress using the shear stresses computed with SHAKE91;and,
>   estimation of the cyclic stress ratio required to initiate
>   liquefaction using standard penetration test results and the
>   CSR vs (N1)60 chart developed by Seed et al. (1985).
> - On-line help for most editing and graphing operations.
> A trial version of the program can be downloaded from:
> The cost of ShakEdit is $65.00, plus $10.00 for shipping and handling,
> for the first copy.  Additional copies are $25.00.  SHAKE91 is not
> included with ShakEdit.  If you would like more information, please
> send an e-mail to shakedit(--nospam--at) with your name and mailing
> address.
> Gus Ordonez
> ShakEdit Software

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From: "Bill Allen, S.E." <ballense(--nospam--at)>
To: <seaoc(--nospam--at)>
Subject: Re: Pre & Postprocessor for SHAKE91
Date: Mon, 17 Mar 1997 13:59:08 -0800
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