Retaining walls are designed to keep soil surface moisture, which is crucial for weed control and to reduce erosion and water transfer. Based on the kind of material utilized, walls may be impermeable or absorbent. Non-impermeable walls are commonly manufactured from concrete blocks, whereas impermeable walls are manufactured from plastics, composites, metal alloys, thermoplastics and plastics with assorted chemical coatings. Retaining walls acceptable for use on steep slopes need to be made from substances that are capable of withstanding hydrostatic …