Hello
The coupling of these elements with springs is possible. Ideally, the elements (BRIC, ) are extruded with the same element width so that the springs can be easily attached.
One of my colleagues made a simple video tutorial about the optimal workflow. Maybe this is what you are looking for:
A useful example of your problem can be found in the TEDDY.
TEDDY > File > Examples > sofimsha > english > 3d_modelling > elastic_interface_01.dat
A similar problem can be found in this post:
Best regards
Frederik Höller
Your SOFiSTiK Support Team