Prob. $2$

$2.$ Classify the following soils, using the grain size distribution and Atterberg limit test data given.

$($a$)$ Soil A: $70\%$ retained on $2\mathrm{.}36mm$ sieve; $10\%$ passed $0\mathrm{.}075mm$ sieve; fines had very low dry strength; $C_u=12$ and $C_c=2\mathrm{.}1$

$($b$)$ Soil B: $74\%$ passed $2\mathrm{.}36mm$ sieve; $33\%$ passed $0\mathrm{.}075mm$ sieve; and fines had high dry strength.

$($c$)$ Soil C: $75\%$ passed $2\mathrm{.}36mm$ sieve; $61\%$ passed $0\mathrm{.}075mm$ sieve; $LL=45$ and $PL=29$

$($d$)$ Soil D: $79\%$ passed $2\mathrm{.}36mm$ sieve; $4\%$ passed $0\mathrm{.}075mm$ sieve; $C_u=45$ and $C_c=0\mathrm{.}8$