A new four-lane undivided freeway with two lanes per direction is currently being designed. The road will open in two years' time. The present traffic is 5 100 vehicles total per day in both directions. Assume 2.2 E80s per heavy vehicle and a growth rate of 6% per annum during the design and construction period, and a growth rate of 4% per annum after opening the road to traffic. Both the structural design and analysis period are 20 years. The road is a class A road, and it is situated in a moderate climatic region. Assume Be = 0.95. The traffic split per direction is as indicated in the following table: Direction % of total vehicles % heavy vehicles East bound 52 8 Westbound 48 9 1. Calculate the cumulative equivalent traffic for the design period in the eastbound direction and state the ES design class. Clearly show all your calculation steps. 2. Calculate the cumulative equivalent traffic for the design period in the westbound direction and state the ES design class. 3. Select and show suitable pavement structures from TRH4 for granular base and hot-mix base pavement structures for the eastbound direction. You may exclude the selected layers from your answer. A new four-lane undivided freeway with two lanes per direction is currently being designed. The road will open in two years' time. The present traffic is 5 100 vehicles total per day in both directions. Assume 2.2 E80s per heavy vehicle and a growth rate of 6% per annum during the design and construction period, and a growth rate of 4% per annum after opening the road to traffic. Both the structural design and analysis period are 20 years. The road is a class A road, and it is situated in a moderate climatic region. Assume Be = 0.95. The traffic split per direction is as indicated in the following table: Direction % of total vehicles % heavy vehicles East bound 52 8 Westbound 48 9 1. Calculate the cumulative equivalent traffic for the design period in the eastbound direction and state the ES design class. Clearly show all your calculation steps. 2. Calculate the cumulative equivalent traffic for the design period in the westbound direction and state the ES design class. 3. Select and show suitable pavement structures from TRH4 for granular base and hot-mix base pavement structures for the eastbound direction. You may exclude the selected layers from your