Midas Civil has boundary conditions, in form of spring stiffness, namely Elastic Link and Point Spring Supports each with six degrees of freedom. Therefore, the boundary conditions of the soil must be in the form of spring having a stiffness rather than full constraints (Supports).

The structure may sink depending on the size and shape of the ground support and the load applied. Ground structure are those which rests on the ground. You can automatically enter a number of boundary conditions representing the ground at once.

Surface Spring Supports function of midas Civil is a feature to enter the Soil boundary conditions that is automatically calculated based on the area section shared.