A retaining wall is a constructed wall that restrains soil or other material at locations having an abrupt change in elevation. There are many types of structures used to retain soil and other materials.
Steel sheet piling (SSP) is a hot-rolled structural shape with interlocks on the flange tips. The interlocks permit individual sections to be connected to form a continuous steel wall which is earth-tight and water resistant.
Sheet pile is used to build continuous walls for waterfront structures and for temporary construction wall heights > 6 m if used with anchors. Can be made of steel, plastics, wood, pre-cast concrete. These are generally waterfront structures such as at docks and wharves, but steel sheet piling is also used for temporary shoring on construction sites.
Fig.1: Schematic diagram and example of clearances between sheet piling and buildings, without groundwater (temporary construction wall)
Fig. 2: Schematic diagram and example of clearances between sheet piling and buildings, with groundwater (water front structure) (right)