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A breakwater structure is designed to absorb the energy of the waves that hit it, either by using mass (e.g. with caissons), or by using a revetment slope (e.g. with rock or concrete armour units). In coastal engineering , a revetment is a land-backed structure whilst a breakwater is a sea-backed structure (i.e. water on both sides).
A wave-dissipating concrete block is a naturally or manually interlocking concrete structure designed and employed to minimize the effects of wave action upon shores and shoreline structures, such as quays and jetties. One of the earliest designs is the Tetrapod, invented in 1950.
A jetty is a man-made structure that protrudes from land out into water. A jetty may serve as a breakwater , as a walkway, or both; or, in pairs, as a means of constricting a channel. The term derives from the French word jetée , "thrown", signifying something thrown out.
The design of the dolos is usually credited to the South African Eric Mowbray Merrifield, one-time East London Harbour Engineer (from 1961–1976). [1]: 10 Eric Merrifield lead a team which included Piet Grobbelaar and Jack Badham-Thornhill who collaborated for many years perfecting the design. These blocks were designed to 22 tonne in later years.
Entrance to the Siuslaw River Siuslaw River, south jetty Siusla River, north jetty Siuslaw jetties at low tide, July 31, 2022.. The Siuslaw jetties (/ s aɪ ˈ j uː s l ɔː / sy-YOO-slaw) [1] at Florence, Oregon, in the United States, are parallel rubble-mound structures at the entrance of the Siuslaw River, bounding the north and south banks and protecting the navigation channel.
A mole is a massive structure, usually of stone, used as a pier, breakwater, or a causeway separating two bodies of water. A mole may have a wooden structure built on top of it that resembles a wooden pier. The defining feature of a mole, however, is that water cannot freely flow underneath it, unlike a true pier.
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Tetrapods used to protect a seawall Large interlocked Xblocs (8.0 m 3 or 280 cu ft) in a trial placement. A wave-dissipating concrete block is a naturally or manually interlocking concrete structure designed and employed to minimize the effects of wave action upon shores and shoreline structures, such as quays and jetties.