Assume a unit-load warehouse has a storage area that can be classified as Layout B, with the cross-aisle exactly in the middle. The warehouse has 16 picking aisles of length 170 feet. The center-to-center picking aisle width (a) is 14 feet, and half the cross-aisle width (v) is 7 feet.

If 40 storage operations and 60 retrieval operations are performed per hour during the day shift, and 50% of the storages are performed using dual-command cycles, what is the expected distance traveled per hour?