3. For a dual carriageway new road scheme, the average annualdaily flow (AADT) of one way traffic is 24,000; 2% are commercialvehicles. No channelisation is expected to occur. Design afoundation and bound layers of a pavement. The subgrade surfacemodulus = 40mpa = 4%CBR. State any assumptions made, including thechoice of design method and sketch a cross section of the finalpavement design.
(N.B. there are hundreds of potentially correct designsdepending on the choices of design methods and materials. Anysubmissions that include identical designs may be investigate forpotential collusion).
