9.6.1 Sheet Piling Retaining Walls
Sheet piling retaining walls are utilized for areas having soft soils and tight spaces. Materials such as steel, vinyl or wood planks go into the making of these types of retaining walls. The statistics of the walls include one-third portion above the ground and the rest (two-third) below ground level (Figure 29). A cable or a rod is used as a tie-back anchor to the walls. The rods are placed at a distance and tied to the back of the walls. Proper drainage has to be ensured during construction of such walls to encounter hydrostatic pressure which may cause instability withen the walls.
Figure 29: Sheet piling in the soil