Soil Compaction:

$[10$ marks$]$

$4\mathrm{.}1$ The results for the standard compaction test are shown in the table below:

$=$ water content; $=$ bulk unit weight; ${}_d=$ dry unit weight

a$)$ Determine Maximum dry density and optimum moisture content and draw graph.

b$)$ Determine dry unit weight and moisture content at $95\%RC($Relative compaction$).$

c$)$ What is the degree of saturation at maximum dry density when specific gravity of soil

is $2\mathrm{.}7?$