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Re: Cantilever System (Help!)

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It seems to me that you need to satisfy the Drift limits and have to
account for the discontinuity as described in Table 16M of the code.  Note,
Section 1630.8.2.1 would penalize you by ( Omega factor) for seismic load
combination.  I am not sure how are you dealing with the moment connection
at the lower diaphragm level to force the shear and moment to the lower
diaphragm. May you elaborate more. 

Samir Ghosn, P.E.
Harris & Associates
At 10:28 AM 11/7/2000 -0800, you wrote:
>           I used R=2.2 to get the seismic load at the higher roof.      My
>argument is that the support at the diaphragm level and at the foundation
>level created a couple moment to serve as a moment base.         Thanks in
>  Alfonso S. Quilala Jr. , P.E.