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Re: Is it a Braced Frame or Cantilevered Column?

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I've done similar retrofits using truss moment frames.  Maybe use that, but reduce the R- factor from 7 to ???  good luck.

On Mon, Oct 13, 2008 at 12:41 PM, Joseph R. Grill <jrgrill(--nospam--at)> wrote:

I have a braced frame (residential design) location in a SDC D.  Dead load weights for the structure will allow me to use an ordinary braced frame.  However due to architectural considerations (a hearth opening where the frame is hidden within a framed fireplace) I am trying to raise the lower connection of the braces above the elevation of the hearth opening.  I'm not sure if it can still be considered a braced frame (for R values) of if it should be considered a cantilevered column even though it really isn't cantilevered (no fixed base for moments).


Or is it something all together.  Of course I would rather consider it an ordinary braced frame rather than cantilevered as the lateral loads are much less. 


Thanks again.



Joseph R. Grill, PE

David Topete, SE