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Naviduct
A naviduct is a special class of navigable aqueduct, in which the waterway also includes a lock. One example of a naviduct has been built at Enkhuizen on the Houtribdijk in the Netherlands on the instructions of the Rijkswaterstaat. This cost over €55 million and was completed in 2003. It is big enough to simultaneously transfer two large Rhine river-barges from the Markermeer to the IJsselmeer or vice versa. The structure was chosen because a busy waterway crosses a dam carrying a busy road, but the space available for separate aqueduct and lock facilities was restricted. Name and definition The term is derived from the words for navigation and aqueduct, which are in turn partly derived from the Latin words ''navis'' meaning ship and ''ducere'' meaning to lead or conduct. It can also be thought of as a lock system with an underpass under the lock for road traffic. The term is introduced and used extensively in the Netherlands for referring to the works near Enkhuizen in Dutch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naviduct
A naviduct is a special class of navigable aqueduct, in which the waterway also includes a lock. One example of a naviduct has been built at Enkhuizen on the Houtribdijk in the Netherlands on the instructions of the Rijkswaterstaat. This cost over €55 million and was completed in 2003. It is big enough to simultaneously transfer two large Rhine river-barges from the Markermeer to the IJsselmeer or vice versa. The structure was chosen because a busy waterway crosses a dam carrying a busy road, but the space available for separate aqueduct and lock facilities was restricted. Name and definition The term is derived from the words for navigation and aqueduct, which are in turn partly derived from the Latin words ''navis'' meaning ship and ''ducere'' meaning to lead or conduct. It can also be thought of as a lock system with an underpass under the lock for road traffic. The term is introduced and used extensively in the Netherlands for referring to the works near Enkhuizen in Dutch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afsluitdijk
The ''Afsluitdijk'' (; fry, Ofslútdyk; nds-nl, Ofsluutdiek; en, "Closure Dyke") is a major dam and causeway in the Netherlands. It was constructed between 1927 and 1932 and runs from Den Oever in North Holland province to the village of Zurich in Friesland province, over a length of and a width of , at an initial height of above sea level. The ''Afsluitdijk'' is a fundamental part of the larger Zuiderzee Works, damming off the Zuiderzee, a salt water inlet of the North Sea, and turning it into the fresh water lake of the IJsselmeer. It is a major landwinning project and a quicker road-connection between the North and West of the Netherlands. The motorway on the ''Afsluitdijk'' was the initial demonstration site for a speed limit in the Netherlands. History Reasons for construction The Afsluitdijk (literally translated: shut-off-dyke) was completed in 1932, thereby shutting off the Zuiderzee (lit: Southern Sea) from the North Sea. Until then, the Zuiderzee had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seneca Aqueduct
Seneca Aqueduct — or Aqueduct No. 1 — is a naviduct that carries the Chesapeake and Ohio Canal (C&O) over Seneca Creek in Montgomery County, Maryland. The C&O built eleven aqueducts along its length. Seneca Aqueduct is a unique structure, not only being the first built, but also the only red sandstone aqueduct on the C&O−and the only aqueduct that is also a lock (Lock 24, or Riley's Lock). It is located at the end of Riley's Lock Road in Seneca, Maryland. History Seneca Aqueduct was built from 1829 to 1832 with three red sandstone arches quarried in the nearby Seneca Quarry, just a few hundred feet to the west. The initial stretch of the C&O Canal opened in 1830 up to Lock 23 and Inlet Lock 2, one lock downstream from the Seneca Aqueduct. The segment from Seneca Aqueduct to Harpers Ferry opened in 1833. This included a sizable turning basin, just west of the aqueduct, where canal boats could anchor or turn around. Next to the aqueduct and lock is the lock keeper's house, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navigable Aqueduct
Navigable aqueducts (sometimes called water bridges) are bridge structures that carry navigable waterway canals over other rivers, valleys, railways or roads. They are primarily distinguished by their size, carrying a larger cross-section of water than most water-supply aqueducts. Roman aqueducts were used to transport water and were created in Ancient Rome. The long steel Briare aqueduct carrying the Canal latéral à la Loire over the River Loire was built in 1896. It was ranked as the longest navigable aqueduct in the world for more than a century, until the Magdeburg Water Bridge in Germany took the title in the early 21st century. Early aqueducts such as the three on the Canal du Midi had stone or brick arches, the longest span being on the Cesse Aqueduct, built in 1690. But, the weight of the construction to support the trough with the clay or other lining to make it waterproof made these structures clumsy. In 1796 Longdon-on-Tern Aqueduct, the first large cast iron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enkhuizen
Enkhuizen () is a municipality and a city in the Netherlands, in the province of North Holland and the region of West-Frisia. History Enkhuizen, like Hoorn and Amsterdam, was one of the harbor-towns of the VOC, from where overseas trade with the East Indies was conducted. It received city rights in 1355. On June 24, 1572 during the Eighty Years' War, in Enkhuizen five Franciscans from Alkmaar were hanged: known as the martyrs of Alkmaar. In the mid-17th century, Enkhuizen was at the peak of its power and was one of the most important harbor cities in the Netherlands. However, due to a variety of reasons, notably the silting up of the harbors, Enkhuizen lost its position to Amsterdam. Tourism Enkhuizen has one of the largest marinas in the Netherlands. Zuiderzeemuseum is located in Enkhuizen. Architecturally, the Drommedaris is the oldest building in Enkhuizen, from 1540. Tourists take boat trips to and from the port to Medemblik. Industry Industrially, Enkhuizen is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Houtribdijk
The Houtribdijk is a dam in the Netherlands, built between 1963 and 1975 as part of the Zuiderzee Works, which connects the cities of Lelystad and Enkhuizen. On the west side of the dike is the Markermeer and on the east is the IJsselmeer. The 27-kilometer-long dike was intended for the Markerwaard, but this polder is now unlikely to be constructed. Although called a ''dike'' (withholding water from land area), the Houtribdijk is actually a '' dam'' (separating water bodies). Parts of the dike are known as the ''Markerwaarddijk'' and the ''Lelydijk''. It is also frequently called the "Enkhuizen–Lelystad dike" in traffic announcements, as if it had no official name. The road that runs on the dike is the N302 and is used by 8,500 vehicles per day with a speed limit of 100 km/h. The road also features a biking path alongside the N302 on the northeastern side. Marine traffic can cross the dike at either the locks or the naviduct A naviduct is a special class of naviga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geotextile Tube
A geotextile tube (also known as a titan tube or geotube) is a large, tube-shaped bag made of porous, weather-resistant geotextile and filled with a sand slurry, to form an artificial coastal structure such as a breakwaters, dune or levee. Geotextile tubes are a component of the living shorelines approach to coastal management. Manufactured by Flint Technical Geosolutions, they are aligned with the shoreline to weaken wave energy and protect against coastal erosion. The tubes facilitate oyster reef development and create areas to dispose of new dredge material. Geotextile tubes are also installed for land reclamation and temporarily installed during the dewatering phase of a dredging operation. If a geotextile tube is exposed to the elements, it can be vulnerable to bursting. Notable installations * Grand Isle, Louisiana ("Burrito Levee") See also * Breakwater (structure) * Cellular confinement * Groyne A groyne (in the U.S. groin) is a rigid hydraulic stru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dewatering
Dewatering is the removal of water from a location. This may be done by wet classification, centrifugation, filtration, or similar solid-liquid separation processes, such as removal of residual liquid from a filter cake by a filter press as part of various industrial processes. Construction dewatering, unwatering, or water control are common terms used to describe removal or draining groundwater or surface water from a riverbed, construction site, caisson, or mine shaft, by pumping or evaporation. On a construction site, this dewatering may be implemented before subsurface excavation for foundations, shoring, or cellar space to lower the water table. This frequently involves the use of submersible "dewatering" pumps, centrifugal ("trash") pumps, eductors, or application of vacuum to well points. The international business research company Visiongain valued the global dewatering pump market at $6.4 billion in 2018. Processes Deep wells A deep well typically consists of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CEMT Class
The Classification of European Inland Waterways is a set of standards for interoperability of large navigable waterways forming part of the Trans-European Inland Waterway network within Continental Europe and Russia. It was created by the European Conference of Ministers of Transport (ECMT; french: Conférence européenne des ministres des Transports, ) in 1992, hence the range of dimensions are also referred to as CEMT Class I–VII. The size for each waterway is limited by the dimensions of the structures including the locks and boat lifts on the route. Classification Class I corresponds to the historical Freycinet gauge decreed in France during 1879. The larger river classification sizes are focused on the carriage of intermodal containers in convoys of barges propelled by a push-tug. Most of the canals of the United Kingdom have smaller locks and would fall below the dimensions in the European classification system. In 2004, the standards were extended with four smaller ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barge
Barge nowadays generally refers to a flat-bottomed inland waterway vessel which does not have its own means of mechanical propulsion. The first modern barges were pulled by tugs, but nowadays most are pushed by pusher boats, or other vessels. The term barge has a rich history, and therefore there are many other types of barges. History of the barge Etymology "Barge" is attested from 1300, from Old French ''barge'', from Vulgar Latin ''barga''. The word originally could refer to any small boat; the modern meaning arose around 1480. ''Bark'' "small ship" is attested from 1420, from Old French ''barque'', from Vulgar Latin ''barca'' (400 AD). The more precise meaning of Barque as "three-masted sailing vessel" arose in the 17th century, and often takes the French spelling for disambiguation. Both are probably derived from the Latin ''barica'', from Greek ''baris'' "Egyptian boat", from Coptic ''bari'' "small boat", hieroglyphic Egyptian D58-G29-M17-M17-D21-P1 and similar '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boat Entering Lock 24 Rileys Lock
A boat is a watercraft of a large range of types and sizes, but generally smaller than a ship, which is distinguished by its larger size, shape, cargo or passenger capacity, or its ability to carry boats. Small boats are typically found on inland waterways such as rivers and lakes, or in protected coastal areas. However, some boats, such as the whaleboat, were intended for use in an offshore environment. In modern naval terms, a boat is a vessel small enough to be carried aboard a ship. Boats vary in proportion and construction methods with their intended purpose, available materials, or local traditions. Canoes have been used since prehistoric times and remain in use throughout the world for transportation, fishing, and sport. Fishing boats vary widely in style partly to match local conditions. Pleasure craft used in recreational boating include ski boats, pontoon boats, and sailboats. House boats may be used for vacationing or long-term residence. Lighters are used to conv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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