Causes & Problems of Settled Concrete
Causes of Settled Concrete
Settling due to poorly compacted ground also occurs when concrete sits on land that was previously landscaped to a different form. Excavating ground to put in water and sewer pipes will create the same effect.
Settling may also occur if plugged gutters or inadequate downspouts allow for the washing away of soil underneath concrete.
One last reason that you see settling, especially here in Wisconsin, is the freezing and thawing of ground. This can cause the concrete to heave. On occasion, the concrete will stay settled after Spring arrives.