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Sheet Piles Sheet piles, made of wood, steel, or concrete, are equipped or constructed for edge-joining, so they can be driven edge-to-edge to form a continuous wall or bulkhead. A few common uses of sheet piles are as follows: 1. To resist lateral soil pressure as part of a temporary or permanent structure, such as a retaining wall2. To construct cofferdams or structures built to exclude water from a construction area3. To prevent slides and cave-ins in trenches or other excavationsThe edges of steel sheetpiling are called interlocks (fig. 1-11) because they are shaped for locking the piles together edge-to-edge. The part of the pile between the interlocks is called the web.A wood sheet pile might consist of a single, double, or triple layer of planks, as shown in figure 1-12. Concrete sheet piles are cast with tongue-and-groove edges for edge-joining.
Figure 1-13.Rubble-mound breakwater or jetty.
Figure 1-14.Composite breakwater or jetty. |
 
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