If Cv is the Coefficient of consolidation, t is time and d is drainage path of one dimensional consolidation of soil, the Time factor TV is given by,
1
\({{\rm{T}}_{\rm{V}}} = \frac{{{{\rm{d}}^2}}}{{{\rm{t}}{{\rm{C}}_{\rm{v}}}}}\)
2
\({{\rm{T}}_{\rm{V}}} = \frac{{{{\rm{t}}^2}}}{{{{\rm{d}}^2}{{\rm{C}}_{\rm{v}}}}}\)
3
\({{\rm{T}}_{\rm{V}}} = \frac{{{{\left( {{{\rm{C}}_{\rm{V}}}} \right)}^3}}}{{{{\rm{d}}^2}{\rm{t\;}}}}\)
4
\({{\rm{T}}_{\rm{v}}}{\rm{ = }}\frac{{{{\rm{C}}_{\rm{v}}}{\rm{t}}}}{{{{\rm{d}}^{\rm{2}}}}}\)