Hi @mitica_iacob
There are 3 options to create them in amodel:
1. Define a vertical panel with two bar elements along its side edges. In such case the results will be displayed independently for each of them and the design of reinforcement will also be done for each of them separately.
2. Define three panels with the outer ones having different thicknesses than the middle one. In such case the results will be displayed independently for each of them and the design of reinforcement will also be done for each of them separately.
3. define a single panel with uniform thickness. In such case you can add the piers after exporting the panel to the RC Wall design module.
If I managed to answer your question(s) press the Accept as Solution button please. This will help other users to find solution(s) much faster. Thank you.

Artur Kosakowski