A120-cy/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 at the site in 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 seven workers. average worker output is 5 cy of concrete per hr. if additional trucks are added the time to place the concrete will decrease