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Barrier allowing liquid to be pumped out of an enclosed area
A cofferdam is an enclosure built within a body of water to allow the enclosed area to be pumped out or drained. This pumping creates a dry working environment
Cofferdam
Dam in Mpumalanga, South Africa
Kromfonteinlower (Wilge) Cofferdam is a rockfill type dam located on the Steenkool Spruit, near Witbank, Mpumalanga, South Africa. It was established
Kromfonteinlower (Wilge) Cofferdam
Kromfonteinlower_(Wilge)_Cofferdam
Barrier that stops or slows the flow of water
semicircular cofferdam on one side of the valley, which forces the river to the other side. After half the dam is built within the cofferdam, the cofferdam is moved
Dam
Battleship of the United States Navy
of the harbor until 1911, when it was patched and refloated within a cofferdam. The hull was then towed to sea and sunk. Maine now lies on the seabed
USS_Maine_(1890)
Dam in Mpumalanga, South Africa
Kromfontein Middle Cofferdam is an earthfill type dam located on the Steenkool Spruit, near Witbank, Mpumalanga, South Africa. It was established in 1990
Kromfontein_Middle_Cofferdam
Dam in the US state of Washington
east cofferdams. The west cofferdam was 2,000 ft (610 m) long, 50 ft (15 m) thick and was constructed 110 ft (34 m) above the bedrock. The cofferdams allowed
Grand_Coulee_Dam
to Arctic drilling purposes. The likelihood of collecting oil with the cofferdam was uncertain, chief among potential problems was the risk that methane
Containment_dome
Structure built to span physical obstacles
bottom, without pilings or footings. An alternative to a caisson is a cofferdam, which is a temporary dam surrounding the support location, open on top
Bridge
Dam in Nevada and Arizona, US
two cofferdams were constructed. Work on the upper cofferdam began in September 1932, even though the river had not yet been diverted. The cofferdams were
Hoover_Dam
Road tunnel in Hainan, China
the Nandu River. Construction took one year and eight months using a cofferdam system. "Penda China creates trio of sculptural tunnel entrances in Haikou
Wenming_East_Road_Tunnel
1912 maritime disaster
descended almost vertically, probably rotating as it fell. Empty tanks and cofferdams imploded as it descended, tearing open the structure and folding back
Sinking_of_the_Titanic
Oil tanker structure
A cofferdam is a small space left open between two bulkheads, to give protection from heat, fire, or collision. Tankers generally have cofferdams forward
Architecture of the oil tanker
Architecture_of_the_oil_tanker
Heavy equipment
heavy-duty tool used to drive piles into soil to build piers, bridges, cofferdams, and other "pole" supported structures, and patterns of pilings as part
Pile_driver
Submerged island in Egypt
flooding of the area. In anticipation of that, between 1974 and 1976 a cofferdam was built around the temples to facilitate their relocation and rebuilding
Philae_Island
Topics referred to by the same term
Coffer (furniture) or chest, a lockable box for storing valuable items Cofferdam, a temporary enclosure used during dam construction Safe, also called
Coffer_(disambiguation)
Dam in Lesotho
pre-cofferdam. The purpose of the pre-cofferdam is to channel the river through diversion tunnels, ensuring the safe construction of both the cofferdam and
Polihali_Dam
Aircraft carrier of the Imperial Japanese Navy
penetrated the cofferdam and exploded. Therefore, the IJN thought it prudent to fill the empty spaces between the tanks and the cofferdam with 2,400 metric
Japanese aircraft carrier Shinano
Japanese_aircraft_carrier_Shinano
Bridge in Downtown Core, Singapore
respectively. The bridge's steelworks were imported from England and a cofferdam was built to put the abutments in place. An electric crane lifted the
Anderson_Bridge_(Singapore)
Dam in Illinois / Ballard County, Kentucky United States
When a dam is constructed on a small river, engineers usually create a cofferdam (or an enclosure) within a river and drain the water out of it to facilitate
Olmsted_Locks_and_Dam
Water management facilities near Amsterdam, Netherlands
the water was 3 m deep. The cofferdam later proved to be one of the most difficult aspects of the plan. The cofferdam Kistdam was originally a circle
Oranje_Locks
Former proposed dam in California
American River through a tunnel and the construction of a massive earthen cofferdam. Following a nearby earthquake and the discovery of an unrelated seismic
Auburn_Dam
Freshwater lake in the United States
Cutting the cofferdam at Montlake in 1913, draining Lake Washington over the next three months until it was level with Lake Union
Lake_Washington
Water desalination plant in Kattupalli, Chennai, India
which damaged a portion of the completed marine works and destroyed the cofferdam meant for the installation of transition pipes. The trial runs were completed
Minjur Seawater Desalination Plant
Minjur_Seawater_Desalination_Plant
Cofferdam containment dome under construction at Wild Well Control in Port Fourchon, Louisiana on April 26.
Timeline of the Deepwater Horizon oil spill (May 2010)
Timeline_of_the_Deepwater_Horizon_oil_spill_(May_2010)
Dam in Minnesota, U.S.
1970, a cofferdam was built upstream from the construction site to hold back Mississippi River waters. Due to a structural inadequacy, the cofferdam washed
St._Cloud_Dam
Diving work associated with the recovery of vehicles, cargo and structures
the surface. This watertight extension is a cofferdam. Although they are temporary structures, cofferdams have to be strongly built, heavily stiffened
Salvage_diving
Removal of water from solid material or soil
A cofferdam created to allow for dewatering of an area
Dewatering
UNESCO World Heritage Site in southern Egypt
November 1963 to commence constructing an 82 feet (25 m) high temporary cofferdam formed around steel sheets that were filled with earth from both sides
Abu_Simbel
English civil and marine engineer (1806–1859)
once again, Brunel built a substantial caisson rather than the normal cofferdam in the river to build the pier, ensuring that the underwater work was
Isambard_Kingdom_Brunel
1959 coal mining accident in Pennsylvania, United States
sealing the breach. First a cofferdam was built around it in the Susquehanna; then water was pumped out from inside the cofferdam to expose the riverbed;
Knox_Mine_disaster
Recovering a ship or cargo after a maritime casualty
the surface. This watertight extension is a cofferdam. Although they are temporary structures, cofferdams have to be strongly built, heavily stiffened
Marine_salvage
1995 film by John McTiernan
Tunnel No. 3 while Carver continues Simon's challenges. Simon blows up a cofferdam to flood the tunnel, but McClane escapes and reunites with Carver. Surviving
Die_Hard_with_a_Vengeance
Communities submerged by the Saint Lawrence Seaway
on July 1, 1958 (a date locally remembered as Inundation Day), a large cofferdam was demolished, allowing the flooding to begin. Four days later, all of
Lost_Villages
Dam in Gillam, Manitoba
around 8.5 terawatt-hours. Although work at the site began in 1976 with a cofferdam completed in 1978, construction was suspended owing to a slowing of demand
Limestone_Generating_Station
Cantilever bridge in New York City
sources reported in May 1881 that work was to commence shortly, and a cofferdam for one of the bridge's piers was installed that month. By the time the
Queensboro_Bridge
Dam in Sanmenxia
construction ceremoniously began on 13 April 1957. Construction on the left-bank cofferdam began in June 1957 and excavation was completed a year later along with
Sanmenxia_Dam
Port in United Kingdom
Brown and Wright. The initial main work was construction of a large cofferdam surrounding the worksite. The dam was constructed of three rows of wooden
Port_of_Grimsby
French colony near present-day Inez, Texas (1685–1689)
several sections of the hull remaining virtually intact. They constructed a cofferdam, the first to be used in North America to excavate the ship as if in dry
French_colonization_of_Texas
machine Tractor Two-wheel tractor Wheelbarrow Air compressor Cable reel Cofferdam Construction trailer Dehumidifier Generator Extension cord Floodlight
List_of_tools_and_equipment
British civil engineer
Big Ben) as well as the Victoria Tower and Central Tower (1836–1859), cofferdam for the riverside foundations and terrace (1837–49) Walker was also involved
James_Walker_(engineer)
Dam in Kotli Town of AJK, Pakistan
◦ Energy Dissipation Submerged Bucket River Diversion ◦ Type Partial cofferdam(1st) + Sheet File(2nd) ◦ Design Flood 2,517m3/s (25yr frequency) Intake
Gulpur_Hydropower_Plant
Riverine lake in North Island
modified as a result of open cast coal mining, around the early 1940s. A cofferdam was built to allow mining over most of the bed, by reducing the lake from
Lake_Kimihia
Composite construction material
Upon curing, this placement allows the 50,180-square-foot (4,662 m2) cofferdam to be dewatered approximately 26 feet (7.9 m) below sea level to allow
Concrete
Suspension bridge between New Jersey and New York
steel pilings were placed in the riverbed to create a watertight cofferdam. The cofferdams for the bridge were the largest ever built at the time. In early
George_Washington_Bridge
Monument in Arlington National Cemetery, Virginia
water would begin to be drained from inside the cofferdam. Since construction of such a large, deep cofferdam had not been attempted before, the Corps said
USS_Maine_Mast_Memorial
towards the stern of a small-decked vessel that houses the rudder controls. cofferdam An insulating space between two watertight bulkheads or decks within a
Glossary of nautical terms (A–L)
Glossary_of_nautical_terms_(A–L)
Type of naval warship
This was up to 2 inches (51 mm) thick on the slopes, with a cork-filled cofferdam along her sides. It would not defend against fire from heavy guns, but
Protected_cruiser
English Tudor warship (1511–1545)
for raising the ship were discarded, including the construction of a cofferdam around the wreck site, filling the ship with small buoyant objects (such
Mary_Rose
Bridge in New York City
from Greenpoint, Brooklyn. In 1938, he completed his task of building a cofferdam, a box-like structure made of 250 steel sheets. This enabled workmen to
Kosciuszko_Bridge
Building structures in or adjacent to large bodies of water
either removing the water from the building site by dewatering behind a cofferdam or inside a caisson, or prefabrication of structural units off-site with
Marine_construction
November 2020, the Code was amended to include amendments regarding tank cofferdams, fire-extinguishing systems and tensile tests for materials under the
International Code of Safety for Ships Using Gases or Other Low-flashpoint Fuels
International_Code_of_Safety_for_Ships_Using_Gases_or_Other_Low-flashpoint_Fuels
Dam in Eluru district, Andhra Pradesh, India
metres (92 ft) MSL and lowest water level is 10.9 metres (36 ft) MSL. Two cofferdams are planned, one up to 41 metres (135 ft) MSL, to facilitate a faster
Polavaram_Project
Dam in Taichung, Taiwan
caused the collapse of its northern end. Subsequently, an embankment cofferdam was built to prevent water from flowing through the breach, while the
Shigang_Dam
Dam in Colombia
On 19 May, the dam works reached an elevation of 405 m, 5 m below the cofferdam's target level. On 25 May, the Colombian Society of Engineers issued a
Ituango_Dam
Bridge in Quebec
Saint Lawrence Seaway. The pier through the canal, allowed, by means of cofferdams, the storage of piles of construction material. The central jetty served
Samuel-De_Champlain_Bridge
Bridges built by ancient Romans
cofferdams, which are enclosures build to pump water out of an area. The base for the foundation of the bridge would be put in this area. Cofferdams were
Roman_bridge
Area of loose particles at the edge of a body of water
beach accesses to construct requiring use of a quick-drying concrete or a cofferdam to protect them from tidal water during the concrete curing process. Concrete
Beach
Hydropower station in Myanmar
(July 2006), photo Earlier works at Yeywa before completion of integrated cofferdam (April 2007), photo Yeywa RCC dam under construction (January 2008), photo
Yeywa_Dam
Type of cruiser in the late 19th and early 20th centuries
full–length protected deck up to 2 inches (51 mm) thick, and a cork-filled cofferdam along her sides. Esmeralda set the tone for cruiser construction for the
Armored_cruiser
Flood defence system for London, England
During construction of the piers, precast concrete sills were built in a cofferdam on the north side of the river and floated out and sunk between the piers
Thames_Barrier
Protected cruiser of the French Navy
Lalande did not receive an armored conning tower. Above the deck, a cofferdam was intended to control flooding from battle damage. Lalande underwent
French_cruiser_Lalande
Shipyard and industrial complex in Brooklyn, New York
springs, as well as a faulty cofferdam design that twice flooded the excavation site with water from Wallabout Bay. The cofferdam was fixed by installing deep
Brooklyn_Navy_Yard
Route raised up on an embankment
purposes starting in 1774. The modern embankment may be constructed within a cofferdam: two parallel steel sheet pile or concrete retaining walls, anchored to
Causeway
Dam in Lesotho
"reverse filters of 2D and 2E material". A temporary 300 000m3 cofferdam, with a pre-cofferdam, were built in mid-1999. River diversion was effected through
Mohale_Dam
Railway bridge over the Firth of Forth in Scotland
cantilever and two on the small uninhabited island of Inchgarvie acted as cofferdams, while the remaining two on Inchgarvie and those for the south cantilever
Forth_Bridge
Chamber for transporting divers vertically through the water
structure to provide workers with a dry working environment below water level Cofferdam – Barrier allowing liquid to be pumped out of an enclosed area Diving
Diving_bell
One of Robert de La Salle's four ships when he explored the Gulf of Mexico
severely limited visibility for divers, the decision was made to construct a cofferdam around the wreck site. This was a double-walled steel structure, with
La_Belle_(ship)
Mountain range in Abkhazia
eastern continuation of the Bzyb Range, from which it is separated by a low cofferdam pass Amtkeli, in the area of which the river Kelasuri begins, the valley
Abkhaz_Range
Dam in Karnataka, India
in 1947 and masonry construction on 15 April 1949. With the help of a cofferdam constructed earlier, the foundation excavation was continued even during
Tungabhadra_Dam
Space with limited entry and egress and not suitable for human inhabitants
spaces are commonly encountered on ships, for examples spaces such as cofferdams, ballast tanks, fuel tanks and cargo tanks on oil tankers. Confined spaces
Confined_space
Bridge in Denmark
A cofferdam was placed around each pier site, before excavating and then filling with concrete. After the base slab had been laid, the cofferdams could
Masnedsund_Bridge
Dam in Mayes County, Oklahoma, U.S.
(1,200,000 m3) of earth and rock. Workers also constructed the first cofferdam on the east side of the river and left it in place until the arches were
Pensacola_Dam
Submarine of the United States
maintenance purposes. The opening was protected by a cofferdam approximately 3 feet (0.91 m) high. The cofferdam was intended to prevent water from accidentally
USS_Guitarro_(SSN-665)
Waterbody in Tempe, Arizona
section was delivered to Tempe by the middle of August. The city built a cofferdam to allow the lake to be refilled while the northernmost bladder was replaced
Tempe_Town_Lake
Fast battleship of the United States Navy
use the same method used to refurbish the battleship Alabama: erect a cofferdam around the hull and pump it dry. In addition to replacing damaged hull
USS_North_Carolina_(BB-55)
French civil engineer (1781–1870)
port of Flushing in Zeeland. There, he solved a critical problem with a cofferdam that was leaking water faster than it could be removed. He solved the
Charles_Joseph_Minard
Bridge in Zhejiang, China
piles, which had a small influence on hydrology and avoided the risk of cofferdam construction from the tidal bore. For the main six-pylon bridge foundation
Jiaxing-Shaoxing_Sea_Bridge
Dam in near Mangakino, Waikato
first water flowed through the tunnel. Work then started by building cofferdams to block the natural channel of the river and allow dam construction to
Maraetai_Power_Station
Dam in South Canterbury, New Zealand
several cofferdams so that the foundations of the dam could be excavated and concrete subsequently poured. The construction of the first cofferdam was a
Waitaki_Dam
Dam in Khuzestan, Iran
divert the water, two roller-compacted concrete cofferdams will be constructed. The upstream cofferdam will be 51 m (167 ft) high and the downstream 25 m
Bakhtiari_Dam
Destroyer of the Italian Navy
hull is divided into two vulnerability areas by a double bulkhead and a cofferdam to improve anti-fire and anti-flooding characteristics. Each vulnerability
Italian destroyer Andrea Doria
Italian_destroyer_Andrea_Doria
Road and river-walk along the north bank of the River Thames in London
addition, extra time and money were spent experimenting with a new type of cofferdam, a structure used to keep water out of the construction site, which was
Victoria_Embankment
Island in the Detroit River, Michigan
construction in midriver of a cofferdam a mile long and a sixth of a mile wide – was conducted". At the time, the cofferdam was "the largest ever constructed"
Stony_Island_(Michigan)
Climate change project
project plan features include buried flood walls stabilized by steel cofferdam structures, raised parkland built on new landfill, deployable flood gates
Lower Manhattan Coastal Resiliency
Lower_Manhattan_Coastal_Resiliency
Bridge connecting Bandra Basitt and Worli, Mumbai, India
the main tower comprise 2-metre-drilled shafts of 25-metre length each. Cofferdam and tremie seal construction have been used to construct the six-metre
Bandra–Worli_Sea_Link
Dam in Trinity County, California
was bogged down in late 1957 when the river flooded and took out the cofferdam that protected the construction site. However, workers cleared out the
Trinity_Dam
Rigid structure to provide workers with a dry working environment below water level
mobile barge-mounted engineering caisson used in the Port of Gibraltar Cofferdam – Barrier allowing liquid to be pumped out of an enclosed area, a temporary
Caisson_(engineering)
Dam in Manicouagan, Quebec
mountain to divert the river's flow around the construction site. The cofferdam that forced the water to use the diversion tunnels was completed on July
Jean-Lesage generating station
Jean-Lesage_generating_station
Expressway in Singapore
machines and work near residential areas being paused at night. In addition, cofferdams were built in the Singapore River to facilitate construction of the expressway
Central_Expressway,_Singapore
American civil engineer (1882–1953)
Washington Bridge, achieved multiple world records including span length, cofferdam size, and use of deflection; earning the designation "Eighth Wonder of
Montgomery_Case
Under-construction buildings in Chicago, Illinois
tower's concrete frame had reached the 22nd floor. By August 2025, the cofferdam around the Chicago Spire site was nearly filled. In addition, workers
400_Lake_Shore
Indian artist
liner is then applied, following the contours of the pen, to create tiny cofferdams. Using small plastic tubes with fine nozzles, paint is then poured into
Raqib_Shaw
Bucharest metro station
level reached the maximum extent, the engineers decided to demolish a cofferdam further down on the river (located near the Mărășești underpass), in order
Piața_Unirii_metro_station
Office skyscraper in Manhattan, New York
(26 m) below ground level. The foundation is surrounded by a concrete cofferdam which measures 6 feet (1.8 m) wide and is reinforced by steel rods. Within
Equitable Building (Manhattan)
Equitable_Building_(Manhattan)
Port in Germany
the dry from September 2023, the Elstermühlgraben was closed off by a cofferdam in spring 2023. The flooding of the harbour basin took place in November
Leipzig_City_Harbour
City in the United States
the second hurricane. Rapid repairs and extensions to the dikes, new cofferdams, and pumping were used to end the flooding; however, house sales halted
Plantation,_Florida
Bridge in Manchester, England
workers were drowned after an overcrowded boat sank after colliding with a cofferdam being used in the construction of the bridge's central pier. On 15 September
River_Irwell_Railway_Bridge
Ernest Shackleton's ship, 1914–1917
then playing a blowtorch over the intake valve. McNish constructed a cofferdam in the shaft tunnel to seal off the damaged stern area while the crew
Endurance_(1912_ship)
Dam in Quebec, Canada
diversion tunnels. The second cofferdam was downstream and prevented water from flowing back into the construction site. Each cofferdam was built on alluvial
Daniel-Johnson_dam
Dam in California
cofferdam, to protect the construction site from floods. This structure later served as an impervious core for the completed dam. With the cofferdam in
Oroville_Dam
travel, tourism, insurance
COFFERDAM
COFFERDAM
COFFERDAM
COFFERDAM
COFFERDAM
COFFERDAM
COFFERDAM
COFFERDAM
COFFERDAM
n.
A cofferdam.
n.
The planking or boarding of a shaft, cofferdam, etc.
n.
A water-tight inclosure, as of piles packed with clay, from which the water is pumped to expose the bottom (of a river, etc.) and permit the laying of foundations, building of piers, etc.
n.
A large stake, or piece of timber, pointed and driven into the earth, as at the bottom of a river, or in a harbor where the ground is soft, for the support of a building, a pier, or other superstructure, or to form a cofferdam, etc.
n.
The chamber of a canal lock; also, a caisson or a cofferdam.
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