It may be that placing a concrete patio along the house caused weight that led to the basement walls flexing inward according to SUPERIOR WALLS.
With SUPERIOR WALLS, you have to block a minimum of a 4 foot by 4 foot section in each corner of the home and the placement of sill plate seams is crucial or the walls can fail. Also, the taller the basement, the more likely a SUPERIOR wall will fail.
Moderated by Glenn Good 
