Instructions

$3-1$ Solve the $1993$ AASHTO flexible pavement design equation for $SN$ of the entire

pavement system. Then, estimate $D_3($No need to present $D_1$ and $D_2).$ Hand calculates

the thickness $(4$ pts$).$

$3-2$ Using Figure $2($Attached AASHTO Flexible Pavement Design Nomograph$),$ estimate all

layer thicknesses $(4$ pts$)$

$3-3$ Using the MS$-$Excel pavement design program, estimate SN and calculate all layer

thicknesses. You need to submit your Excel file $($with a file name of your first name initial

and last name.xls$)$ to the Test $2$ folder $(3$ pts$)$