A warehouse consists of 5 aisles of rack (racks on both sides of each aisle) and a loading dock. The rack system is four levels high. Forklift trucks are used to transport loads between the loading docks and the storage compartments of the rack system in each aisle. The trucks move at an average speed of 120m/mim (loaded) and 150m/min (empty). Load handling time (loading plus unloading) per delivery totals 1.0 min per storage/retreival delivery on average, and the anticipated traffic factor = 0.90, worker efficiency = 100% and vehicle availability = 95%. The average distance between the loading docks and the center of aisles 1 through 5 are 150m, 250m, 350m, 450m, 550m respectively. These values are to be used to compute travel times. The required rate of storage/retreival deliveries is 75/hr, distributed evenly among the 5 aisles and the trucks perform either storage or retrieval deliveries but not both in one delivery cycle. Determine the number of forklift trucks required to achieve the 75 deliveries per hr
A warehouse consists of 5 aisles of rack (racks on both sides of each aisle) and a loading dock. The rack system is four levels high. Forklift trucks are used to transport loads between the loading docks and the storage compartments of the rack system in each aisle. The trucks move at an average speed of 120m/mim (loaded) and 150m/min (empty). Load handling time (loading plus unloading) per delivery totals 1.0 min per storage/retreival delivery on average, and the anticipated traffic factor = 0.90, worker efficiency = 100% and vehicle availability = 95%. The average distance between the loading docks and the center of aisles 1 through 5 are 150m, 250m, 350m, 450m, 550m respectively. These values are to be used to compute travel times. The required rate of storage/retreival deliveries is 75/hr, distributed evenly among the 5 aisles and the trucks perform either storage or retrieval deliveries but not both in one delivery cycle. Determine the number of forklift trucks required to achieve the 75 deliveries per hr
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