This is not an assignment question and not a graded question. Urgent
Thank you
Extracted text: Using the AASHTO design the procedure, determine the minimum depth of concrete pavement required for the design period of 20 years. (Assume Total ESAL = 31.91*10^6) R=95%, So -0.3, Cd = 1.0 J=3.2, k- 130, Ec = 5*10 lb/in.2 Sic =650 lb/in^2, Pt -2.5 Pi 4.5 Select one: a. Around 12 in b. around 9 in C. around 13in d. around 7 in