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RE: Z Factor in UBC94

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Jim,
I should have clarified the code of enforcement as 1997 UBC (1998 California
Building Code).
Thanks,
Bob

> -----Original Message-----
> From:	James Lin [SMTP:se3949(--nospam--at)yahoo.com]
> Sent:	Tuesday, October 26, 1999 11:07 AM
> To:	seaint(--nospam--at)seaint.org
> Subject:	Z Factor in UBC94
> 
> The Z factor (0.4 maximum) in UBC94 is "EFFECTIVE PEAK
> ACCELERATION", which is different from the maximum
> peak acceleration from either soil report or from some
> acceleration contour map (such as 0.6 at certain area
> in California per Algermissen and Perkins, 1976).
> 
> This is the decision by the seismic design
> recommendations committee based in part on scientific
> knowledge and in part on judgment and compromise, as
> discussed in ATC 3-06 (Applied Technology Council,
> 1978, p. 300)
> 
> James Lin
> IDS, Inc.
> 
> 
> 
> 
> =====
> 
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