Darcyâs Law hence states that the flow rate in the horizontal depends on (1) the ability of. the soil to âconductâ water; (2) the magnitude and direction of the slope, which is the. gravitational potential energy gradient per unit weight of flowing water (soil water wants to.
Upheaval means the slab has risen above the original foundation elevation. This happens most often due to the introduction of moisture under the foundation. The most frequent cause of this moisture is a plumbing leak under the slab. The most common leak is on the drain side of the plumbing system. Note that some damage is strictly cosmetic damage that does not interfere with the foundation's load bearing capacity. These cosmetic items could be cracks in floor tiles, cracks in sheetrock, etc. A qualified foundation repair contractor or a structural engineer can help you determine if the problems you are faced with are cosmetic or will require foundation repair.
This can affect your home's weight distribution, in turn cracking your foundation walls. Soil that is too dry can pull away from foundation walls, causing them to buckle outward. In addition, be careful about how many services (sewer, electric and gas lines) run through your foundation at or near the same point. The more you core through a concrete wall, the weaker it becomes, resulting in cracks. Getting your foundation right the first time is critical in the longevity of your home. Know what to look for, and you'll avoid common foundation issues. MORE: Angie's List Guide to Foundations. Editor's note: This is an updated version on an article originally published on July 19, 2013.