Planting dead trees in the sand to stabilise the beach Required to compensate people who lose buildings and farmland Natural eroded material encourages the development of beaches and salt marshes. Requires maintenance and can be expensive.Ĭertain areas of the coast are allowed to erode and flood naturally Sand and shingle must be sourced from somewhere else, usually by dredging. Increases the distance a wave has to travel, thus slowing it down and preventing erosion. The beach is made wider by using sand and shingle Improves strength of cliff and prevents rocks from fallingĪnd here are some common types of soft engineering. Metal bars inserted in cliffs to reinforce them Large boulders or rocks piled up on a beach in front of a cliff or sea wall.Ībsorbs energy of waves and helps build up beaches Has a substantial impact on the environment. Partly submerged dam-like structures that control the tidal flowĬreate a more consistent water level that can be used for hydroelectricity Prevents cliff erosion as it absorbs wave energyĮxpensive to implement. Slanted structures made from concrete, wood or rocks along a cliff Inexpensive hard engineering structure, but not very effective or attractive Unattractive and expensive.īundles or rocks in metal mesh located at cliff bases Allows beaches to build up.Ĭan create erosion further down the coast. Prevents longshore drift, flooding, and erosion. Wooden fence-like barriers built at right angles at the beach Waves can erode the wall defeating its purpose and is expensive to implement and maintain Protects cliffs from upland erosion and is a barrier to flooding Large walls constructed from concrete, steel, or stone located along the shoreline of a beach. The table below shows the common types of hard engineering.
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