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RE: UBC 97

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Dear Alberto,
Please note that the calculation for base shear differs greatly from UBC '94 to UBC '97, not only in the soil type coefficient but also in the R and the T, and the calculation of the ultimate load E.  Perhaps you should review chapter 16 of the ´97 code before preparing your input for the program. 
I only have a well-worn and scribbled photocopy of the '97 code but if you wish I can fax you the relevant bits.
Maria I. Falconi
Guayaquil, Ecuador
-----Mensaje original-----
De: Alberto Guida <GRUPOCG(--nospam--at)>
Para: SEAINT <seaint(--nospam--at)>
Fecha: Viernes 8 de Enero de 1999 09:51 AM
Asunto: UBC 97

I am working with Robot 97 and it uses the UBC 97's seismic analysis. I have UBC 94.
Please, I need to know the definition of the new types of soils.
I live in Venezuela and it is not easy to get that information fast.
Thank you very much. 
Alberto Guida