Based on a peak rate of 100 storages per hour and 100 retrievals per hour, determine the

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Based on a peak rate of 100 storages per hour and 100 retrievals per hour, determine the minimum number of S/R machines required without having greater than 75% utilization of the equipment. Assume 60% of the operations are performed on a dualcommand basis. The shuttle on the S/R requires 15 seconds to perform a P/D operation. The average horizontal speed of the S/R is 400 fpm; the average vertical speed of the S/R is 80 fpm; horizontal and vertical movement is simultaneous. Each aisle is 300 long and 60 high.

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Facilities Planning

ISBN: 9780470444047

4th Edition

Authors: James A. Tompkins, John A. White, Yavuz A. Bozer, J. M. A. Tanchoco

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