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RE: Seismic loads, Mexican Code vs. UBC

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The conversion is not very straight forward.  It would be easier if you
could state the location of the site.  If you list the state, city, lat /
long, etc. I could be more helpful.

Harold Sprague

> -----Original Message-----
> From:	Gunnar Hafsteinn Isleifsson [SMTP:gunnarhi(--nospam--at)]
> Sent:	Tuesday, April 04, 2000 5:55 PM
> To:	seaint(--nospam--at)
> Subject:	Seismic loads, Mexican Code vs. UBC
> A colleague of mine has been asked to evaluate seismic loads on a
> structure (steel silo, supported by a steel frame) where the design
> criteria is given as follows:
> Design acceleration according to Mexican Code M.O.C-93: Zone A
> Horizontal Vo for "terreno typo III": 7.8 cm/s
> This is the only information we have been able to obtain as of now.
> Does anyone on the list know if this can be converted to an equivalent UBC
> zone classification (UBC94 or UBC97)?
> Thank you
> Gunnar Hafsteinn Isleifsson
> Denmark