Question $3$

$3\mathrm{.}1$ Given: The cumulative E$80$s over the $15-$year SDP $=4951964$ E$80$s per lane for a $4-$lane, divided road category A$.$ The design CBR is estimated to be $9\%$ and the road is in a relatively dry region. Aggregate materials available include: AG$,$ S$1,$ S$2,$ G$5,$ G$9,$ C$2,$ C$3,$ C$4$ BC$,$ and BS$.$ Use TRH $4$ and provide all possible pavement designs. $($Note: Show all your calculations, all used design tables with indications on$,$ and neat free$-$hand sketches showing pavement layers, materials, and thicknesses$).$ Select one alternative based on material availability in the area.

$(25)$