Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion


A phreatic line is defined as the line within a dam section below which there are

[A]. positive equipotential lines
[B]. positive hydrostatic pressure
[C]. negative hydrostatic pressure
[D]. negative equipotential lines
[E]. none of these.

Answer: Option B


No answer description available for this question.

Subbrajoyti Saha said: (Nov 9, 2014)  
Pheratic line is the top see page line.

Chintu said: (Feb 27, 2017)  
The top surface of a freely moving groundwater reservoir over an impervious stratum is called the Phreatic line or ground water table. Water pressure is atmosphere pressure at all points on a phreatic line so it is an equipotential line.

Pratik Kumar said: (Mar 18, 2018)  
The top flow line of a saturated soil mass below which seepage takes place, is called the Phreatic line. Hydrostatic pressure acts below the phreatic line whereas atmospheric pressure exists above the phreatic line. This line separates a saturated soil mass from an unsaturated soil mass. It is not an equipotential line, but a flow line.

Goutham said: (Sep 14, 2018)  
Pressure head on the Phreatic line is zero.

Yamini Tandan said: (Feb 1, 2019)  
Shape of the phreatic line is parabola.

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