(Solved): Figure 5.5 Flow chart for classification of inorganic fine-grained soils ( 50% passing \#200 s ...

Figure 5.5 Flow chart for classification of inorganic fine-grained soils ( $?50\%$ passing \#200 sieve). (Adapted from ASTM D2487.) 4. Figure below shows the grain-size distribution of four soils, $A,B,C$ and D. The plastic limit and liquid limit of the fines as follows. Describe the four soils and give their USCS symbols. Hints: $P_I=LL?PL$ ${\mathrm{C}}_{\mathrm{u}}={\mathrm{D}}_{60}/{\mathrm{D}}_{10}\mathrm{Cc}={\left({\mathrm{D}}_{30}\right)}^2/\left({\mathrm{D}}_{60}\mathrm{X}{\mathrm{D}}_{10}\right)$ Identify $\%$ of gravel, $\%$ of sand, $\%$ of fines for each soil from the graph. Rough estimate will be acceptable due to graphical error. Plasticity Chart