Foliation
Soils can be introduced with foliation. It means that at a certain angle the soil has significantly different (usually worse) parameters (c a φ). In the program, the foliation angle and its dispersion are defined, so the modified parameters will be used within +- value of the dispersion from the specified foliation angle. The foliation angle is always entered between 0 and 180°.
If the slope of a slip surface segment or the slope of the interface between blocks is assumed within this range, the analysis proceeds with the modified parameters of cf and φf.
The foliation angle can be displayed as a hatching of the soil - e.g. the grey soil in the image below has a defined foliation angle of 150°. The display is switched on in the drawing settings.
Foliation display