What are the objective of the dewatering during excavations ?

Some of the main objectives of te dewatering are as follows:-

To provide dry working area for the construction of foundations or buildings, bridges, dams and tunnels
Increase the bearing capacity
To reduce the compressibility of soils
To mitigate or reduce the potential for liquefaction
To maintain the stability of natural or man made slopes
To reduce the potential for piping in dams
To reduce the damage caused by frost heave
To reduce the lateral earth pressure on foundation and retaining structures

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