Question: 1. A 4CY hydraulic hoe is loading poorly shot limestone rock into haul trucks that have a 17 LCY capacity. Use the tables below to


1. A 4CY hydraulic hoe is loading poorly shot limestone rock into haul trucks that have a 17 LCY capacity. Use the tables below to find the bucket fill factor and cycle time. If a range is given, sue the middle of the range. The exchange time is 0.80min. The rock is being hauled to a crusher located 3 miles away. The trucks average 15MPH on the way to the dump site and 20MPH on the return. It takes one minute to dump and one minute to maneuver into the loading area. Find the optimum number of trucks for this haul by minimizing the cost per BCY. Hourly costs are as follows: a. Hoe $300 b. Loader $80 (removes product from the crusher) c. Rock crusher $150 d. Trucks $65 Assume the bunching efficiency is average. Bunching Efficlency (\%) 1. A 4CY hydraulic hoe is loading poorly shot limestone rock into haul trucks that have a 17 LCY capacity. Use the tables below to find the bucket fill factor and cycle time. If a range is given, sue the middle of the range. The exchange time is 0.80min. The rock is being hauled to a crusher located 3 miles away. The trucks average 15MPH on the way to the dump site and 20MPH on the return. It takes one minute to dump and one minute to maneuver into the loading area. Find the optimum number of trucks for this haul by minimizing the cost per BCY. Hourly costs are as follows: a. Hoe $300 b. Loader $80 (removes product from the crusher) c. Rock crusher $150 d. Trucks $65 Assume the bunching efficiency is average. Bunching Efficlency (\%)
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