The Assign – Foundation Springs – At Wall Base command is used for assigning or deleting foundation springs at wall bases. This command works in a similar way as the one used for columns and braces.

The linear spring assignments made to the wall bases are effective only in the global z-direction. Furthermore, the value entered for the wall’s major axis stiffness is defined as stiffness per unit length. The program assumes that the wall sits on continuum spring media (like an elastic foundation) and it concentrates the spring stiffness value to nodes at wall bases.