Coupled Walls Modeling Criteria (4.5.4.6)
The arms of the shear wall with reinforced concrete tie beams are always modeled automatically according to 4.5.3.7 within the framework of shell finite element rules , as is the case with a hollow wall .
See for details.Finite Element Meshes of Polygonal Cross-section Shear Wall (Shell Elements) (4.5.3.7)