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Re: FOS forOvtg clarification

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Charles Greenlaw wrote:

. > Here, you can put your axis of rotation under the applied vertical load if
. > you want and get rid of that load as an "overturning force".

Actually, you'll never get rid of the applied vertical load, because you have 
to take into account the *reactions* which were eliminated when overturning 
about the toe was considered.  With tipping impending, the reactions of all 
of the vertical forces are considered concentrated at the toe.  By taking 
moments about the toe, *that* value is eliminated.

A. Roger Turk, P.E.(Structural)
Tucson, Arizona