SSC JE Civil Engineering 23-Sep-2019 Shift 2 Solved Paper

Coarse grained soils cannot achieve the plastic state of consistency and their liquid limit and plastic limit may be said to coincide, that is ${\mathit{I}}_{\mathit{p}}$ = 0. When the liquid limit or the plastic limit cannot be determined, the plasticity index is reported as NP (Non-Plastic). When LL = PL, ${\mathit{I}}_{\mathit{p}}$ is reported as Zero.