Question $4$

Marks $25$

Consider the data obtained from the laboratory tests on two soil specimens shown in Table Q$4.$

Table Q$4$

$\backslash$table$[[$GRADATION ANALYSIS,CONSISTANCY LIMIT$],[\backslash$table$[[$Sieve$],[$No$.]],\backslash$table$[[$Particle$],[$Size$]],\backslash$table$[[$Soil X$],[($Passing $\%)]],\backslash$table$[[$Soil Y$],[($Passing $\%)]],$Soil X$,$Soil Y$],[\backslash$table$[[$No$.$ of$],[$bumps$]],\backslash$table$[[$Water$],[$Content$]],\backslash$table$[[$No$.$ of$],[$bumps$]],\backslash$table$[[$Water$],[$Content$]]],[3/8,9\mathrm{.}5,100,100,11,52,11,21],[4,4\mathrm{.}75,90,76,15,44,17,17],[10,2\mathrm{.}00,80,60,20,40,20,15],[20,0\mathrm{.}85,65,45,28,29,28,10],[40,0\mathrm{.}425,35,25,35,19,40,6],[60,0\mathrm{.}25,22,15,\{$

$\backslash$table$[[$Plastic Limit:$],[19\%]]\},\{$

$\backslash$table$[[$Plastic Limit:$],[7\%]]\}],[100,0\mathrm{.}15,19,8],[200,0\mathrm{.}075,11,6]]$

$($i$)$ Plot the grain size distribution curves.

$[5$ marks$]$

$($ii$)$ Determine the liquid limit$.$

$[10$ marks$]$

$($iii$)$ Classify the soils $x$ and $Y$ according to the AASHTO Soil Classification System.

$[10$ marks$]$

$($AASHTO$-$American Association of State Highway and Transportation Officials$)$