9.6.1        Cantilever Retaining Walls

Cantilever walls are the taller retaining walls having uniform thickness and are tied to a footing. Properly engineered cantilever walls hold back sufficient amount of soil. These walls cantilever loads to a large, structural footing, converting horizontal pressures from behind the wall to vertical pressures on the ground below (Figure 28). Typical basements in a house are an example of these types of retaining walls. Cantilever walls are manufactured in the form of an inverted 'T'. It means that the walls transform horizontal pressures from behind the wall into vertical pressures on the ground below. The footer of cantilever walls should be wide enough to prevent the wall from tipping. The thickness of not only the footer but also that of the wall is important. The wall is built with steel-reinforcement in both the footing and wall structures.

 

 

Figure 28: Mechanics of cantilever wall in the soil