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Schematic cross section of a pressurized caisson. In geotechnical engineering, a caisson (/ ˈ k eɪ s ən,-s ɒ n /; borrowed from French caisson 'box', from Italian cassone 'large box', an augmentative of cassa) is a watertight retaining structure [1] used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, [2] or for the repair of ships.
Caisson (French for "box") may refer to: Caisson (engineering), a sealed underwater structure; Caisson (vehicle), a two-wheeled cart for carrying ammunition, also used in certain state and military funerals; Caisson (Asian architecture), a spider web ceiling; Caisson (lock gate), a gate for a dock or lock, constructed as a floating caisson
A 100-ton open caisson that was lowered more than a mile to the sea floor in attempts to stop the flow of oil in the Deepwater Horizon oil spill has been called a cofferdam. [citation needed] A cofferdam over 1 mile long was built to permit the construction of the Livingstone Channel in the Detroit River. [8] See main article at Stony Island.
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Rolling caissons are a development of sliding caissons fitted with rollers beneath. These do not rely solely on buoyancy to make them portable and so are easier to operate. [7] The caisson may only need to be lifted a few inches to make it movable on its track, which significantly reduces the ballast pumping time compared to a ship caisson.
A round caisson in the imperial garden at the Forbidden City. The caisson (Chinese: 藻井; pinyin: zǎojǐng; lit. 'algae well'), also referred to as a caisson ceiling, or spider web ceiling, [1] in Chinese architecture is an architectural feature typically found in the ceiling of temples and palaces, usually at the centre and directly above the main throne, seat, or religious figure.
The first table lists the 100 most common word forms from the Corpus de Referencia del Español Actual (CREA), a text corpus compiled by the Real Academia Española (RAE). The RAE is Spain's official institution for documenting, planning, and standardising the Spanish language. A word form is any of the grammatical variations of a word.