If we apply prestressing and anchor the tendons firmly to the foundation ground, then... If the tendons exert compressive stresses forces greater than those caused by tension and are strongly anchored to the ground, this means that the bending moment is reduced or even eliminated by both the prestressing and the anchoring.

For compression to occur on the opposite side, there must be an overturning moment and a bending moment. However, the tendon on the tensioned side resists deformation caused by the bending moment and the overturning moment.

How can compression occur on the opposite side when there is no rotation or bending?