Data for Problems $5\mathrm{.}12-5\mathrm{.}15$

You have collected soil samples as part of the investigation for a dam project. The grain$-$size distribution data for the four soil samples are shown in Figure $5\mathrm{.}8$ as curves $H,$I,$J$ and L$.$ From your Atterberg limit tests on the $-40$ portion of theses samples, you have measured the following data.

$\backslash$table$[[\backslash$table$[[$Soil Sample$],[$Identification$]],\backslash$table$[[$Liquid$],[$Limit$]],\backslash$table$[[$Plastic$],[$Limit$]]],[$H$,60,26],[$I$,$Non$-$Plastic$],[$J$,46,34],[$L$,37,18]]$

Figure $5\mathrm{.}8$ Particle size distribution curves for Problems $5\mathrm{.}12$ through $5\mathrm{.}15.$

$5\mathrm{.}13.$ Determine the AASHTO group classification and group index for soils $H$ through $L$ using

the data given above.

$5\mathrm{.}15.$ Determine the USCS group symbol and group name for soils $H$ through $L$ using the data given above$\mathrm{.}4\mathrm{.}17$ Determine $C_u$ and $C_c$ for each of the three soils in Proble

of these soils is

most well$-$graded? Why?