A 120 cy per hr maximum output pump is used to place the concrete for a 200 cy slab. The concrete is supplied by 8 cy transit-mix trucks arriving to the site on 12 min intervals. The concrete batch plant is located 5 miles from the site. Average truck speed is 30 mph. Each transit-mix truck takes, on average, 10 min to discharge. The placement crew size is 7 workers. Average worker output is 5 cy of concrete per hr. (a) How long will the operation take? (b) How can the operation be reorganized more effectively?
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