Determine the maximum hauling production given the following conditions. as many scrapers as required can be used, but only one push tractor will be available. the material is a sandy clay (dry earth), 3,200 lb/bcy. the expected haul-road rolling resistance is 80 lb/ton. the average scraper load will be 28.2 lcy. the haul route has three segments: 700 ft at a grade of + 5%; 2,500 ft at + 2% grade; and 500 ft at - 2% grade (moving from the cut to the fill). to account for acceleration and deceleration, use an average speed of 5 mph for 200 ft at each end of the haul and