The temporary all round enclosure which keeps the water away from the working area by using vertical barriers is called-
Coffer dam
A structure specifically designed for this purpose—creating a dry working environment by excluding water temporarily—is known as a coffer dam (sometimes spelled cofferdam). Therefore, the only structure among the options that fits the description of a temporary all-round enclosure to keep water away from a working area by using vertical barriers is a coffer dam.
Important Questions from Dams and Spillways
Among the following Which of the following dam is partly earthen and partly rockfill?
- Which of the following is a rigid dam ?
The major resisting force for a gravity dam is
If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor down stream of the crest wall, is given by the question-
- The major resisting force in a gravity dam is -
