Sentence examples for cofferdam from inspiring English sources
noun
A temporary watertight structure that is pumped dry to enclose an area underwater and allow construction work on a ship, bridge, or rig to be carried out; a caisson.
The hydrates did not just clog the pipes, they also buoyed up the 125-tonne cofferdam that had been lowered over the leak, lifting it right off the sea bed.On May 16th, though, oil did start to be collected, thanks to a subtler intervention.
The relief wells will cost $150m apiece, and the cofferdam experiment will cost millions, too.
The next intervention will use a new, smaller cofferdam which by dint of its smaller size and the use of some chemical additives may not clog up with an icy slurry of methane hydrates, as the previous one did.
Xingu Vivo claims the cofferdam at Pimental has turned the river below it into stagnant pools of dead fish; it says neither the boat hoist nor the fish ladder will work.More heat than lightMost of the Indian protesters live in villages several days upstream by voadeira (fast launch), and will not be directly affected by Belo Monte.
A similar process across the floor at the entrance incorporated a cofferdam of interlocking steel sheetpiling, which allowed the sill and gate hinge to be constructed in the dry.
The gate, of the flap variety already mentioned, was floated and stepped into place by divers after the removal of the cofferdam.
The basic design used piles driven into the riverbed and old boats filled with stones sunk between them to make cofferdam-like foundations.
BP is also building a pair of cofferdams that could sit over the leaks like inverted funnels, with piping allowing the oil up to a drilling ship at the surface.The first of these cofferdams is already built and due to be sunk by May 7th.
There were obstructions encountered in building the cofferdams, however, so that the arch spans eventually varied from 4.5 to 10.2 metres (15 to 34 feet).
Within the upstream and downstream cofferdams, partly of rockfill, much of the filling is of compacted sand.
The Eads bridge was given added strength by its firm foundations, for which pneumatic caissons, instead of cofferdams, were used for the first time in the United States.
