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Cantilever Wall 

GEO5

Geotechnical software

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Verification – limit states

After computing forces acting on the structure the program determines the overall vertical and horizontal forces Fv and Fh, computes the forces acting on the footing bottom (normal force N and tangent force T):

Forces acting on the footing bottom

Next the program performs verification for overturning stability and slip. For walls with a flat footing bottom and specified jump it is possible to account for the wall jump either in the form of pressure acting on the front face or by considering a wall with an inclined footing bottom.

Check for overturning stability (the moment rotates around the point B of the wall - see picture):

where: Movr - overturning moment
γs - coefficient of overall stability of structure
Mres - resisting moment

Check for slip:

where: N - normal force acting on the footing bottom
φd - design angle of friction structure-soil
cd - design cohesion structure-soil
d - width of wall heel
e - eccentricity
γs - coefficient of overall stability of structure
T - tangent force acting on the footing bottom

where eccentricity e:

where: Movr - overturning moment
Mres - resisting moment
N - normal force acting in the footing bottom
d - width of wall heel
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