8. (Chapter 6): Estimate the production rate in bf hr of entire process of loading, unloading and hauling lumber in construction site. The lumber will be hauled 5 miles at an average haul speed of 30 miles per hour. The average return speed will be 45 miles per hour. A crew of three laborers and one truck driver will be able to unload and stack the lumber at 1,000 bf per hour per worker. A loader will load the trucks at the stockpile in 15 minutes. The capacity of truck is 2,500 board feet. (10 Points) 8. (Chapter 6): Estimate the production rate in bf hr of entire process of loading, unloading and hauling lumber in construction site. The lumber will be hauled 5 miles at an average haul speed of 30 miles per hour. The average return speed will be 45 miles per hour. A crew of three laborers and one truck driver will be able to unload and stack the lumber at 1,000 bf per hour per worker. A loader will load the trucks at the stockpile in 15 minutes. The capacity of truck is 2,500 board feet. (10 Points)