The Consolidation equation is:

$\frac{\text{d}\text{e}\text{l}\text{u}}{\text{d}\text{e}\text{l}\text{z}}=c_v\frac{de{l}^{2}u}{del{z}^2}$

It relates:

The variation of pore pressure with time and drainage path.

The variation of the coefficient of consolidation with the isochrones.

The variation of pore pressure with the co$-$efficient of consolidation and the isochen

The variation of the isochrones with the height, $z,$ and the coefficient of consolidation.