Verification - factor of safety

Program evaluates normal and shear force in the footing bottom and then verifies the wall against overturning and sliding. 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:

where:	Movr	-	overturning moment
	Mres	-	resisting moment
	FS	-	factor of safety against overturning

Check for slip:

where:	N	-	normal force acting on the footing bottom
	φ	-	angle of friction structure of soil
	c	-	cohesion structure-soil
	d	-	width of wall heel
	e	-	eccentricity
	Η	-	shear force acting in the footing bottom
	Fres	-	resisting force (from georeinforcement and mesh overlap)
	FS	-	factor of safety against translation

where eccentricity e:

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

The "Settings" frame serves to assign the factors of safety FS (standard values are set to 1,5).

Horizontal components of forces are included in the shear force and overturning moment, vertical components of forces are included in the normal force and resisting moment. The resisting forces and moments also include horizontal forces from georeinforcements and overlapping meshes.