Coupure

Structural feature

For the prehistoric biological event, see Grande Coupure.

Not to be confused with Flood gate.

A coupure where the A2 motorway crosses the Diefdijk (Hollandic Water Line) in the Netherlands. A coupure with a shed for storing the materials used to close the coupure in Het Hogeland

A coupure is a means of closing an opening in a wall, floodwall or levee (dike). The word comes from the French verb couper which means "to cut". In historic times a coupure was a location where a breach in the city walls or the walls of a fortress was closed. In more modern times a coupure is a way of allowing traffic to pass a flood protection structure.

## Military

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During a siege, a coupure is a ditch or an earthwork or wooden palisade built behind a breach made by the attacker's guns in the walls of a fortress or a city. Its purpose is to hinder and frustrate an attack made by the forlorn hope.

This was a strategy used many times by defenders of fortifications, for example, by the Irish defenders during the Siege of Clonmel (April - May 1650).

It can also be a passage through a glacis to create a sally port, so that the defenders can launch a sortie against the attackers.

## Civil engineering

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When a road or railway crosses a floodwall or levee the road or railway can either be laid on a grade or through a cut in the floodwall or levee. In case of expected flooding the cut can temporarily be closed. This type of coupure is also known as vehicle gate, floodwall gate or similar names. The closure can be accomplished by various means.

The most basic means of closing a coupure is with soil or sandbags. More sophisticated means of closing a coupure consist of wooden or metal beams or doors. Older coupures are usually brick structures with provisions for placing two stacks of beams between them. Between the stacks of beams, which form two walls, horse manure or other animal faeces mixed with straw is dumped and compacted. This type of material swells when wet, thus providing additional waterproofing. Modern coupures can consist of only one wall and can be made watertight with the help of rubber flaps or other materials.

* A coupure

* The opening

* With a floodwall installed

* The wall from above

## References

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Stephen Francis Wyley A Dictionary of Military Architecture Fortification and Fieldworks from the Iron Age to the Eighteenth Century, Drawings by Steven Lowe

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Fortifications

Ancient|

* Abatis
* Acropolis
* Agger
* Broch
* Burgus
* Caltrop
* Castellum
* Castra
* Castros
* Chengqiang
* Circular rampart
* City gate
* Crannog
* Ditch
* Defensive wall
* Dun
* Faussebraye
* Gatehouse
* Gord
* Hillfort
* Landwehr
* Limes
* Nuraghe
* Oppidum
* Palisade
* Pincer gate
* Promontory fort
* Rampart
* Ringfort (Rath)
* Refuge castle
* Schwedenschanze
* Stockade
* Sudis
* Trou de loup
* Vallum
* Wagon fort (Laager)
* Vitrified fort

Post-classical|

* Advanced work
* Albarrana tower
* Alcazaba
* Alcázar
* Amba
* Arrowslit
* Barbican
* Bartizan
* Bastion
* Battery tower
* Battlement
* Bawn
* Bent entrance
* Bergfried
* Berm
* Boom
* Bretèche
* Bridge castle
* Bridge tower
* Burh
* Butter-churn tower
* Caer
* Castle
* Chamber gate
* Chartaque
* Chashi
* Chemin de ronde
* Chemise
* Cheval de frise
* Citadel
* Coercion castle
* Concentric castle
* Corner tower
* Counter-castle
* Curtain
* Drawbridge
* Enceinte
* Embrasure
* Flanking tower
* Fortified buildings (church, house, Dzong)
* Fujian tulou
* Ganerbenburg
* Gate tower
* Gabion
* Glacis
* Guard tower
* Gulyay-gorod
* Gusuku
* Half tower
* Hoarding
* Inner bailey
* Kasbah
* Keep
* Kremlin (Detinets)
* Ksar
* Landesburg
* Loophole
* L-plan castle
* Machicolation
* Merlon
* Moat
* Motte-and-bailey
* Murder hole
* Neck ditch
* Outer bailey
* Outwork
* Parapet
* Peel tower
* Portcullis
* Postern
* Powder tower
* Qalat
* Reduit
* Ribat
* Ricetto
* Ringwork
* Roundel
* Quadrangular castle
* Shell keep
* Shield wall
* Shiro
* Toll castle
* Tower castle
* Tower house
* Turret
* Viking ring fortress
* Wall tower
* Bailey (or ward)
* Watchtower
* Witch tower
* Yagura
* Yett
* Zwinger

Modern|

| Early modern|

* Abwurfdach
* Arsenal
* Barricade
* Bastion
* Blockhouse
* Breastwork
* Canal
* Caponier
* Casemate
* Cavalier
* Counterguard
* Couvreface
* Coupure
* Covertway
* Crownwork
* Device Forts
* Entrenchment
* Flèche
* Gorge
* Gunpowder magazine
* Hornwork
* Kotta mara
* Lunette
* Magazine
* Orillon
* Ostrog
* Palanka
* Place-of-arms
* Polygonal fort
* Presidio (Spanish America)
* Punji sticks
* Ravelin
* Redan
* Redoubt
* Retrenchment
* Sally port
* Sandbag
* Scarp and Counterscarp
* Sconce
* Schanze
* Sea fort
* Station
* Star fort
* Tenaille

|

19th century|

* Barbed wire
* Barbette
* Border outpost
* Bunker
* Coastal artillery
* Disappearing gun
* Fire control tower
* Gun turret
* Land mine
* Martello tower
* Outpost
* Polygonal fort
* Sangar
* Wire obstacles

20th century|

* Admiralty scaffolding
* Air raid shelter
* Anti-tank trench
* Barbed tape
* Belgian gate
* Blast shelter
* Blast wall
* Border security
* Bomb shelter
* Buoy
* Bremer wall
* Concertina wire
* Defensive fighting position
* British "hedgehog" road block
* Czech hedgehog
* Dragon's teeth
* Entry control point (ECP)
* Electric fence
* Fallout shelter
* Fire support base
* Flak tower
* Hardened aircraft shelter
* Hesco bastion
* Kabal
* Loophole
* Main line of resistance
* Missile launch facility
* Pillbox
* Revetment
* Sentry gun
* Spider hole
* Submarine pen
* Underground hangar
* Weapon storage area
* Weapons Storage and Security System

By topography|

* Cave castle
* Hill castle
* Hillfort
* Hillside castle
* Hilltop castle
* Island castle
* Lowland castle
* Marsh castle
* Moated castle
* Promontory fort
* Ridge castle
* Rocca
* Rock castle
* Spur castle
* Water castle
* Floating water castle

By role|

* Border barrier
* Coastal defence
* Coercion castle
* Counter-castle
* Fence
* Ganerbenburg
* Hunting lodge
* Imperial castle
* Kaiserpfalz
* Landesburg
* Lustschloss
* Military base
* Obstacle
* Ordensburg
* Refuge castle
* Toll castle
* Urban castle

By design|

* Bastion fort
* Bridge castle
* Circular rampart
* Concentric castle
* L-plan castle
* Motte-and-bailey castle
* Quadrangular castle
* Ringfort
* Ringwork
* Tower castle
* Z-plan castle

Lists|

* Bastion forts
* Castles
* Cities with defensive walls
* Defense line
* Fortified estate
* Fortifications
* Forts
* Military installations
* Walls

Related word|

* Castle town
* Château
* Dungeon
* Festung
* Fortified gateway
* Gatekeeper
* Loophole
* National redoubt
* Palas
* Picket
* Schloss
* Trench
* Vedette

Other topics|

* Civil defense
* Continuity of government
* Military urbanism
* Subterranean warfare
* Siege
* Siege engine
* list
* Tunnel warfare
* Trench warfare
* Urban warfare
* Guerrilla

* See also:  Category

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