Classifies soil using the Unified Soil Classification System (USCS) using the coarse-grained symbol. 1 December 2015
USCS.coarse.symbol(pg, ps, pf, Cc, Cu, PI = NA, LL, PL)A soil's USCS coarse-grained symbol
= percent gravel (%)
= percent sand (%)
= percent fines (%)
= coefficient of curvature
= coefficient of uniformity
= plasticity index
= liquid limit
= plastic limit
Kyle Elmy and Jim Kaklamanos