GGU-SLAB: General note on constrained moduli
The "Constrained mod." menu is only visible if the constrained modulus method is selected in "File/New". This menu serves simple definition of the constrained modulus.
It is necessary to define a triangle mesh for analysis using the constrained modulus method. This mesh is not related to the FEM mesh. The nodes of this triangle mesh are described by the drilling points. The drilling points are then connected to form a triangle mesh, from which the program can interpolate the constrained modulus profile at any point. The constrained modulus profiles are described by a mesh, structured similarly to the interpolation mesh (see the "Subgrade" menu). The difference is that the subgrade reaction moduli are not defined at the nodes of this mesh, but a constrained modulus profile. In the simplest case this mesh can consist of a single triangle comprising three constrained modulus profiles.