Lateral resistance of wedge footing

[canwesteng]

I'm wondering if any geotechs have some insight on this problem - in the hopes of increasing the lateral resistance of slab foundation in one direction, I'm thinking of sloping the base to provide a portion of the normal force acting against the load (the load only acts in one direction).

Now do I need to consider

A) the horizontal projection of the sloped face acting against lateral earth pressures
B) some stress distribution occurring in the soil that increases the effective vertical face resisting lateral loads
C) ignore lateral soil resistance along the wedge completely

See attached sketch

https://files.engineering.com/getfi...-c566-44a6-abd3-9487cf88d1dd&file=Capture.PNG

 

[Mjkkb2]

Not a Geotech but my vote is for A - except why not thicken up the other side of the wedge for more direct passive pressure area instead of relaying on the very sloped area??