A retaining wall in civil engineering serves the purpose of supporting soil or other materials at a different level on either side of the wall. These walls are commonly used to prevent soil erosion, manage slopes, and create level surfaces in areas with varying elevations. The primary functions of retaining walls include:

There are different types of retaining walls, including gravity walls, cantilever walls, counterfort walls, and anchored walls. The choice of the retaining wall type depends on factors such as the height of the wall, soil conditions, and the specific engineering requirements of the project. Proper design and construction of retaining walls are crucial to ensure their stability and effectiveness in fulfilling their intended purpose.