Why sand bags are stacked inside single walled cofferdam?

Related MCQs

• Guide piles used in single walled cofferdam are made of which material?
• Steel Sheet type double walled cofferdam is suitable at _________
• Which cofferdam uses frame made of wooden logs to provide desired shape to cofferdam ?
• When the depth of water is from 4.5 to 6 m, the type of cofferdam used is
• Which of the following is type of cofferdam?
• Which cofferdam is suitable at place where velocity of flow is slow & depth of water is 1.5m?
• Rockfill cofferdam can be construction up to _________ m water depth.
• Which cofferdam can be used at a place where working space is limited and depth of water is about 4m?
• When large area consisting water depth up to 21m which cofferdam is suitable?
• Why sand island method of sinking of caisson is used?