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Ditch (fortification)
In military engineering, a ditch is an obstacle designed to slow down or break up an attacking force, while a Trench warfare, trench is intended to provide cover to the defenders. In military fortifications, the side of a ditch furthest from the enemy and closest to the next line of defence is known as the scarp (fortification), scarp while the side of a ditch closest to the enemy is known as the counterscarp. Uses In early fortifications, ditches were often used in combination with rampart (fortification), ramparts to slow down the enemy whilst defensive fire could be brought to bear from the relative protection afforded by the rampart and possibly the palisade. In medieval fortifications, a ditch was often constructed in front of a defensive wall to hinder Mining (military), mining and escalade activities from an attacker. When filled with water, such a defensive ditch is called a moat. However, moats may also be dry. Star forts designed by military engineers like Vauban, co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OLD SARUM Ditch
Old or OLD may refer to: Places *Old, Baranya, Hungary *Old, Northamptonshire, England *Old Street station, a railway and tube station in London (station code OLD) *OLD, IATA code for Old Town Municipal Airport and Seaplane Base, Old Town, Maine, United States People *Old (surname) Music *OLD (band), a grindcore/industrial metal group * ''Old'' (Danny Brown album), a 2013 album by Danny Brown * ''Old'' (Starflyer 59 album), a 2003 album by Starflyer 59 * "Old" (song), a 1995 song by Machine Head *"Old", a 1982 song by Dexys Midnight Runners from ''Too-Rye-Ay'' Other uses * ''Old'' (film), a 2021 American thriller film *''Oxford Latin Dictionary'' *Online dating *Over-Locknut Distance (or Dimension), a measurement of a bicycle wheel and frame See also *Old age *List of people known as the Old *''Old LP'', a 2019 album by That Dog * * *Olde, a list of people with the surname *Olds (other) Olds may refer to: People * The olds, a jocular and irreverent online nick ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthworks (engineering)
Earthworks are engineering works created through the processing of parts of the earth's surface involving quantities of soil or unformed rock (geology), rock. Shoring structures An incomplete list of possible temporary or permanent geotechnical engineering, geotechnical shoring structures that may be designed and utilised as part of earthworks: *Mechanically stabilized earth *Earth anchor *Cliff stabilization *Grout curtain *Retaining wall *Slurry wall *Soil nailing *Tieback (geotechnical) *Trench shoring *Caisson (engineering), Caisson *Dam *Gabion *Ground freezing Gallery File:Mechanically stabilized earth diagram.gif, Mechanically stabilized earth File:GroutCurtain.gif, Grout curtain File:Retaining Wall Type Function.jpg, Retaining wall types File:Soil Nail.jpg, Soil nailing File:FEMA - 6044 - Photograph by Larry Lerner taken on 03-15-2002 in New York.jpg, Tieback (geotechnical), Tieback File:Sbh s600.JPG, Trench shoring File:Caisson Schematic.svg, Caisson (engineering), Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caponier
A caponier is a type of defensive structure in a fortification. Fire from this point could cover the ditch beyond the curtain wall (fortification), curtain wall to deter any attempt to storm the wall. The word originates from the French ', meaning "chicken coop" (a ''capon'' is a castrated male chicken). In some types of bastioned fortifications, the caponier served as a means of access to the outworks, protecting troops from direct fire; they were often roofless. Although they could be used for firing along the ditch, the flanks of the bastions were the main defence of the ditch by fire. In later polygonal forts, caponiers were often roofed and were not intended as a type of ''covered way'', but as the main way of keeping the ditch clear of a besieger. History Originally the term referred to a covered passageway that traversed the ditch (fortification), ditch outside the curtain of a fortress. Fire from this point could cover the ditch beyond the curtain wall (fortification), cu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sally Port
A sallyport is a secure, controlled entry way to an enclosure, e.g., a fortification or prison. The entrance is usually protected by some means, such as a fixed wall on the outside, parallel to the door, which must be circumvented to enter and prevents direct enemy fire from a distance. It may include two sets of doors that can be barred independently to further delay enemy penetration. From around 1600 to 1900, a sallyport was a sort of dock where boats picked up or dropped off ship crews from vessels anchored offshore. That meaning occasionally still occurs, especially in coastal Great Britain. Etymology and historical usage The word ''port'' is ultimately from Latin for door. Often the term postern is used synonymously. It can also mean a tunnel, or passage (i.e., a secret exit for those besieged). A ''sally'', ultimately derived from Latin (to jump), or "salle" sortie, is a military maneuver, typically during a siege, made by a defending force to harass isolated or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemin De Ronde
A ''chemin de ronde'' ( French, "round path"' or "patrol path"; ), also called an allure, alure or, more prosaically, a wall-walk, is a raised protected walkway behind a castle battlement. In early fortifications, high castle walls were difficult to defend from the ground. The ''chemin de ronde'' was devised as a walkway allowing defenders to patrol the tops of ramparts, protected from the outside by the battlements or a parapet A parapet is a barrier that is an upward extension of a wall at the edge of a roof, terrace, balcony, walkway or other structure. The word comes ultimately from the Italian ''parapetto'' (''parare'' 'to cover/defend' and ''petto'' 'chest/brea ..., placing them in an advantageous position for shooting or dropping. References External links * Castle architecture {{castle-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loophole
A loophole is an ambiguity or inadequacy in a system, such as a law or security, which can be used to circumvent or otherwise avoid the purpose, implied or explicitly stated, of the system. Originally, the word meant an arrowslit, a narrow vertical window in a wall through which an archer (or, later, gunman) could shoot. Loopholes were commonly used in U.S. forts built during the 1800s. Located in the sally port, a loophole was considered a last ditch defense, where guards could close off the inner and outer doors trapping enemy soldiers and using small arms fire through the slits. Legal loopholes are distinct from lacunae, although the two terms are often used interchangeably. In a loophole, a law addressing a certain issue exists, but can be legally circumvented due to a technical defect in the law, such as a situation where the details are under-specified. A lacuna, on the other hand, is a situation in which no law exists in the first place to address that particular issue. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnot Wall
A Carnot wall is a type of Loophole (firearm), loop-holed wall built in the ditch of a fort or redoubt. It takes its name from the French mathematician, politician, and military engineer Lazare Carnot. Such walls were introduced into the design of fortifications from the early nineteenth century. As conceived by Carnot, they formed part of an innovative but controversial system of fortification intended to defend against artillery and infantry attack. Carnot walls were employed, together with other elements of Carnot's system, in continental Europe in the years after the Battle of Waterloo, final defeat of Napoleon in 1815, especially by the Prussia, Prussians, other German Confederation, Germans and Austrian Empire, Austrians. Their adoption was initially resisted by the Bourbon Restoration in France, French themselves and by the United Kingdom of Great Britain and Ireland, British. Lazare Carnot and his system of fortification Carnot was born in 1753. He became a military engin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Faussebraye
A faussebraye () is a defensive wall located outside the main walls of a fortification. It is of a lower height than the main walls, and is preceded by a ditch. In Greek and Byzantine The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived the events that caused the fall of the Western Roman E ... fortifications, the faussebraye was known as a proteichisma. References Fortification (architectural elements) {{fort-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berm
A berm is a level space, shelf, or raised barrier (usually made of Soil compaction, compacted soil) separating areas in a vertical way, especially partway up a long slope. It can serve as a terrace road, track, path, a fortification line, a border wall, border/separation barrier for navigation, good drainage, industry, or other purposes. Etymology The word is from Middle Dutch and came into usage in English via French. Military use History In medieval military engineering, a berm (or berme) was a level space between a parapet or defensive wall and an adjacent steep-walled ditch (fortification), ditch or moat. It was intended to reduce soil pressure on the walls of the excavated part to prevent its collapse. It also meant that debris dislodged from fortifications would not fall into (and fill) a ditch or moat. In the trench warfare of World War I, the name was applied to a similar feature at the lip of a trench, which served mainly as an elbow-rest for riflemen. Modern u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rampart (fortification)
In fortification architecture, a rampart is a length of Embankment (earthworks), embankment or wall forming part of the defensive boundary of a castle, hillfort, Human settlement, settlement or other fortified site. It is usually broad-topped and made of excavated earth and/or masonry.Friar, Stephen (2003). ''The Sutton Companion to Castles'', Sutton Publishing, Stroud, 2003, p. 241. Darvill, Timothy (2008). ''Oxford Concise Dictionary of Archaeology'', 2nd ed., Oxford University Press, Oxford and New York, p. 376. . Types The composition and design of ramparts varied from the simple mounds of earth and stone, known as dump ramparts, to more complex earth and timber defences (box ramparts and timberlaced ramparts), as well as ramparts with stone revetments. One particular type, common in Central Europe, used earth, stone and timber posts to form a ''Pfostenschlitzmauer'' or "post-slot wall". Vitrified ramparts were composed of stone that was subsequently fired, possibly to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Revetment
A revetment in stream restoration, river engineering or coastal engineering is a facing of impact-resistant material (such as stone, concrete, sandbags, or wooden piles) applied to a bank or wall in order to absorb the energy of incoming water and protect it from erosion. River or coastal revetments are usually built to preserve the existing uses of the shoreline and to protect the slope. In architecture generally, it means a retaining wall. In military engineering it is a structure formed to secure an area from artillery, bombing, or stored explosives. Freshwater revetments Many revetments are used to line the banks of freshwater rivers, lakes, and man-made reservoirs, especially to prevent damage during periods of floods or heavy seasonal rains (see riprap). Many materials may be used: wooden piles, loose-piled boulders or concrete shapes, or more solid banks. Concrete revetments are the most common type of infrastructure used to control the Mississippi River. More than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fortification - Ditch And Rampart
A fortification (also called a fort, fortress, fastness, or stronghold) is a military construction designed for the defense of territories in warfare, and is used to establish rule in a region during peacetime. The term is derived from Latin ("strong") and ("to make"). From very early history to modern times, defensive walls have often been necessary for cities to survive in an ever-changing world of invasion and conquest. Some settlements in the Indus Valley Civilization were the first small cities to be fortified. In ancient Greece, large cyclopean stone walls fitted without mortar had been built in Mycenaean Greece, such as the ancient site of Mycenae. A Greek '' phrourion'' was a fortified collection of buildings used as a military garrison, and is the equivalent of the Roman castellum or fortress. These constructions mainly served the purpose of a watch tower, to guard certain roads, passes, and borders. Though smaller than a real fortress, they acted as a border gu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
