What Are Retaining Walls?
A retaining wall is a structure built and erected to withstand the lateral pressure of soil, where there is a desired change in a surface elevation that transcends the angle of repose of the soil. Using retaining walls allows for retaining soil at varying levels on either side of the structure. The soil is supported laterally by the retaining walls.
Structures known as retaining walls are built to keep dirt on a slope that normally would not stay (typically a steep, near-vertical, or vertical slope). They link soils between two distinct elevations, commonly in parts of terrain holding unsuitable slopes or where the landscape needs to be molded forcefully and constructed for more specific reasons like hillside farming or freeway overpasses.