Cofferdam
What do cofferdam mean?
A cofferdam is a temporary structure used to create a dry surface area in a body of water so that construction or repair work can be done on a bridge, dam, or other water surface structure.
It is typically made of a series of interlocking sheets of steel or other material that are driven into the ground to create a barrier around the work area.
The water is then pumped out of the area, allowing workers to access the structure and perform their work without being in contact with the water.
Types of Cofferdams
- Double walled sheet pile.
- Cellular. Earthen.
- Box type.
- Portadam Systems
- Brace Sidngle walled sheet pile..
Why do we need cofferdam?
"What is cofferdam used in construction?" You might be surprised. A cofferdam is a system used to retain water and allow builders to irrigate construction sites.
Helps maintain a dry work area when erecting structures in waterlogged areas.
Who invented cofferdam?
The first cofferdams are said to have been used by King Cyrus of Persia in 539 BC.
Temporarily divert the waters from the Euphrates River, allowing Babylon to be conquered
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