The thickness of the shear wall significantly affects the location of the neutral axis of in-plane axial force in the plate. If the shear wall is thicker, the interaction effect becomes more significant. The neutral axis of the in-plane axial force then moves up, as shown in Figure 11. As an extreme case, when a thicker wall is located at the edge of the transfer plate, the plate under the shear wall may be in full tension (Figure 11).