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RE: FW: 97 UBC

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Yes.  You calculate the diaphragm forces (or any other earthquake 
forces), including maximum and minimum limits (which are ALL at the 
strength-level).  Then, if you are using an Allowable Stress Design 
approach, these forces are divided by 1.4.

************
> From:          Al Grathwol 
> Subject:       RE: FW: 97 UBC
> Date:          Wed, 29 Sep 1999 13:49:13 -0400

> What I mean is that the base shear equation is intended to be used for
> strength design.  If you want to use allowable stress design, you divide the
> base shear by 1.4.
> In turn, it seems you should divide the prescribed minimum and maximum
> diaphragm forces by 1.4

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Michael Valley                                   E-mail: mtv(--nospam--at)skilling.com
Skilling Ward Magnusson Barkshire Inc.                  Tel:(206)292-1200
1301 Fifth Ave, #3200,  Seattle  WA 98101-2699          Fax:        -1201