Lecture 13 - Purposes for Dewatering Notes | EduRev

: Lecture 13 - Purposes for Dewatering Notes | EduRev

 Page 1


Dewatering
Page 2


Dewatering
In 12
th
lecture, we have studied the principles of 
dewatering,  hydrogeology of the area in terms 
of types of aquifers, permeability and design 
issues. 
Page 3


Dewatering
In 12
th
lecture, we have studied the principles of 
dewatering,  hydrogeology of the area in terms 
of types of aquifers, permeability and design 
issues. 
Purposes for Dewatering
? For construction excavations or permanent 
structures that are below the water table and
are not waterproof or are waterproof but are
not designed to resist the hydrostatic pressure
? Permanent dewatering systems are far less
commonly used than temporary or construction
dewatering systems
Page 4


Dewatering
In 12
th
lecture, we have studied the principles of 
dewatering,  hydrogeology of the area in terms 
of types of aquifers, permeability and design 
issues. 
Purposes for Dewatering
? For construction excavations or permanent 
structures that are below the water table and
are not waterproof or are waterproof but are
not designed to resist the hydrostatic pressure
? Permanent dewatering systems are far less
commonly used than temporary or construction
dewatering systems
Common Dewatering Methods
? Sumps, trenches, and pumps
? Well points
? Deep wells with submersible pumps
Page 5


Dewatering
In 12
th
lecture, we have studied the principles of 
dewatering,  hydrogeology of the area in terms 
of types of aquifers, permeability and design 
issues. 
Purposes for Dewatering
? For construction excavations or permanent 
structures that are below the water table and
are not waterproof or are waterproof but are
not designed to resist the hydrostatic pressure
? Permanent dewatering systems are far less
commonly used than temporary or construction
dewatering systems
Common Dewatering Methods
? Sumps, trenches, and pumps
? Well points
? Deep wells with submersible pumps
Dewatering Open Excavation by 
Ditch and Sump
Army TM 5-818-5
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