Masonry concrete block walls are designed to support the load of the house on them and also to withstand the force of normal soil pressure pushing against the wall. In Northeast Ohio, the walls are designed to withstand around 40 pounds of soil pressure per square inch. Generally, with a designed in safety factor, the walls will withstand up to 60 pounds per square inch (psi ) without cracking or bowing. Once soil pressure exceeds 60 psi the wall is often subject to mechanical failure. Wet, saturated clay soils in our region will often reach 90 psi. Once this pressure is reached the wall can usually no longer resist these forces and will start to give way, by cracking, then bowing, and eventually shearing at the bottom if not stabilized. Fortress carbon fiber grid straps are designed to withstand 10 times this much pressure, far more than can ever be generated by swelling soil. Once your wall is properly reinforced, stabilized and anchored, it will no longer move and can be warranted for the life of your structure.