Eccentric Load on Column Footing

[SCEngr1]

I have a pre-engineered metal building with rigid frames. The manufacturer's engineer has stated that they always place the edge of the column footing flush with the edge of the building's turned-down slab. Since the column is within 8 inches of the edge, this means the column load is eccentric to the centerline of the footing.

Does anyone have a reference or formula(s) that you can share that handles this situation? Also, since this pour will monolithic, do you account for the grade beam action between column footings?

 

[UcfSE]

See Foundation Engineering by Braja Das. He covers eccentrically loaded footings fairly well. Coduto has another good reference.

I don't normally account for the thickened edge helping with the column gravity load.

 

[SCEngr1]

What about the grade beam action (turned-down slab) helping with a moment on a single moment column?