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Shearwall Foundation (max. flex. bending)

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I'd like to know what would you do in order to find the location of the maximum flexural bending in the footing of a concrete shearwall.

Click her to see the figure: http://h1.ripway.com/SEAINT/Shearwall_FDN.pdf

 

As an approximation, one can assume that this location is under line B (under the edge of the shearwall).

But in reality, depending on the wall and foundation characteristics, this location can be anywhere between lines B and C (under the shearwall) which can be calculated.

In order to calculate this location, you need to check the flexural bending in various sections under the wall and pick the max.

 

What is your experience in this regard?
Do you know a good reference showing this or an alternative procedure to find the location of Max. flexural bending?

 

Thanks in advance

Casey (Khashayar) Hemmatyar, PE

California