Plot moisture contents from the liquid limit test on one semi$-$logarithmic chart $($x$-$axis $=$

number of drops $+$ logarithmic scale and y$-$axis $=$ moisture content $(\%)+$ arithmetic scale$)$

for all five groups. For each soil, fit the best line through the data points $($five flow curves

in total$).$ Evaluate the liquid limit value $($report it as a whole number without the $\%$ sign$)$

for each group$$s soil. Include the $\%$ clay and $\%$ sand $($e$.$g$.,55\%$ clay $+45\%$ sand$)$ in the

legend for soils used by Groups $1$ through $4$ and native for soil used by Group $5.$ For the

soils used by Groups $1$ through $4,$ develop one plot with the liquid limit $($y$-$axis$)$ versus the

percent of clay $($x$-$axis$).$

$$ Calculate the plastic limit value $($report it as a whole number without the $\%$ sign$)$ for each

group$$s soil $($five plastic limit values in total$).$ For the soils used by Groups $1$ through $4,$

show the plastic limit $($y$-$axis$)$ versus the percent of clay $($x$-$axis$)$ on one plot.

$$ Calculate the plasticity index $($report it as a whole number without the $\%$ sign$)$ for each

group$$s soil. For the soils used by Groups $1$ through $4,$ develop one plot with the plasticity

index $($y$-$axis$)$ versus the percent of clay $($x$-$axis$).$

$$ Classify each group$$s soil per USCS. For the soil tested by Group $5,$ the additional data

needed for the classification can be found in your Lab $2$ spreadsheet$/$report$.$

$$ Based on the results for the soils of Groups $1$ through $4,$ how does the increase in clay

content affect the plastic limit$,$ liquid limit$,$ and plasticity index? Explain.

$$ Do the results and observed trends agree with your expectations? Explain.

just for this group data