What are the essentials, required to draw a flow net?
In order to draw the flow net, it is first essential to find out the location and shape of phreatic line and top flow line separating the saturated and unsaturated zones.
The phreatic line can be located by which of the following method?
As suggested by casagrande, the phreatic line can be located by graphical, experimental and analytical methods.
Kozney’s top flow lines is called as____________
kozney’s solution for flow of water consists of a family of confocal parabola s representing the flow lines. Hence kozney’s top flow line is called the basic or base parabola.
For the water flowing above an impervious ,infinite ,horizontal plane .the net flow is given by___________
In 1938, kozney analytically derived a flow net for the case of water flowing above an impervious, infinite, horizontal plane which at a certain place becomes permeable.
What is the line within a dam section, below which there are positive hydrostatic pressures?
the phreatic line or seepage line is the line within a dam section below which there are hydrostatic pressures in the dam .the hydrostatic pressure below on the phreatic line itself is atmospheric.