5) A trapezoidal water transport ditch like the following figure and section properties in the table is planned to be excavated: (20 Marks) Soil weight in place Soil weight after excavation Soil weight after compacting Angle of repose 2800Kg/m3 Top Width 5 m. 2240Kg/m3 Bottom Width 3 m. 3350Kg/m3 Full Water Depth 2 m. 22° Length of ditch 25 Km a) What will be the base width and height of the triangular spoil bank created after excavation? b) The number of truck loads if the capacity of the truck is 10 Lm³? c) Find the cycle time for one production cycle based on given information below: Load time of each truck is about 75 seconds. Once the truck starts to haul the excavated material, it goes 16.70 km with an average speed of about 40Km/hour. The time required for dumping is about 0.40 min. Returning distance is 33.4 Km and empty truck can drive back faster to first location with speed of 60 km/hr. There is about 0.02 min. of unavoidable delay in average on each cycle. (1 Km/hr. - 16.70 m/min.), (Job Efficiency = 0.90) d) Can this job be done if we have totally 45 trucks in our company and the time is limited to 60 working days? (Each working day is 10 hours)