GGU-UNDERPIN: Soil properties

Up to 50 soil layers can be taken into consideration. For each layer the following parameters must be given:

• depth in metres below top of the wall, or absolute depth;

• unit weight [kN/m³] of moist soil ;

• unit weight [kN/m³] of buoyant soil ' ;

• friction angle [°];

• cohesion (active and passive) [kN/m²];

• active angle of wall friction as the ratio

• passive angle of wall friction

• permeability to the left and right of the wall [m/s];

• constrained modulus E_s.

Permeability is taken into consideration in a calculation of subsurface hydraulic conditions via flow conduits parallel to the wall.

If you activate the "Differentiate active + passive soil properties" check box in the dialog box in "File/New" or "Editor 1/Analysis options", you can enter differing friction angles and unit weights for the active and the passive sides.

The program provides an expandable database with soil properties for common soils. The
database can be opened via the "Common soils" button in the "Editor 1/Soils" editor box
.