write neatly and solve On the graph below, $($a$)$ plot the gradation curve for a soil with these results from a sieve analysis: For this soil, $($b$)$ determine the percentage of gravel, sand, and fines in the soil by the Unified Soil Classification System $($USCS$)$ and provide the USCS designation for this soil; and $($c$)$ sketch on the graph the gradation curves for this soil, a well$-$graded sandy gravel, and a non$-$plastic silty sand.For this soil, $LL=32$ and $PL=22.$

Plot the gradation curve using software $($no hand drawing$)(5$ pts$)$

Classify the soil by using USCS soil classification system. Given group

symbol and group name $(5$ pts$)$

The site engineer also wants to know the classification by the AASHTO

method. Classify the soil by using AASHTO soil classification system.

Given group symbol and group index $(5$ pts$).$ What conclusion can you

draw from the group index? $($hint: group index and performance$).(1$

pts$).$