Consider the pavement system provided in Figure $1.$ AC layer is divided into $5$

sublayers as given in Table $1.$ The AC moduli used for the sublayers are $570,000$ psi,

$565,000$ psi, $575,000$ psi, $595,000$psi, $585,000$psi in no order. $($You will have to find

the order$)$

a$)$ Please complete Table $1$ by organizing the AC moduli for each layer based on

the frequency each layer is exposed to $($assume temperature is constant through

the depth$).$

b$)$ Assuming a $6000$lb single wheel load applied over a $6-$in radius, using layered

elastic analysis, please calculate the tensile strains at critical locations and

compressive strains at the middle of each layer$/$sublayer and at $12$in below

subgrade interface. Report your findings in a table.

c$)$ If the $6000$lb load is applied $1000$ times a day for $90$ days, using MEPDG

procedure, please calculate the AC bottom$-$up cracking, AC rutting and base

and subgrade rutting. For subgrade, please use a thickness of $24$ in to calculate

rutting. Please do NOT subdivide the base layer and subgrade. Please plot total

rutting and cracking with respect to number of repetitions and describe the

progression of these distresses.

d$)$ What is the total rutting of the system? Which layer contributes to rutting the most?

$($Partial Answer$)$: Total Rut$<mn>0</mn><mn>.</mn><mn>2</mn>$in$,$ Fatigue Cracking

Responses may be slightly different based on tool. Surface responses are

generally unstable. You need to decide on which responses are relevant on what

distress