Bowing Basement Walls
Bowing walls are caused by hydrostatic pressure. Hydrostatic pressure is a pressure created by excessive amounts of water in the soil.
Are you noticing bowing in your basement walls?
You can actually see when your basement wall is bowing inward (or deflecting and shearing in severe circumstances). Bowing block walls in basements are usually accompanied by a horizontal crack running about 4 feet above the floor, and ending about 6 feet from the corners. From there, the crack dissipates into the corners in the form of stair step cracking, both diagonally toward the ceiling and toward the floor.
Repairing Bowing Walls
Bowing walls can repaired be one of several ways. Carbon fiber strips can be used if the deflection doesn’t exceed 2 inches. Other repairs can include I-beams or C-channel beams with helical tie-backs, sometimes called wall anchors.