Circulation

Clear pathways allowing for the movement of racks, processing, and support equipment shall be provided throughout the space in a direct path.

Circulation pathways shall be a minimum of 1.2 m (4 ft) wide with a minimum clear overhead of 2.4 m (8 ft).

Rows should not exceed 20 cabinets or racks in length. Dead-end aisles should be avoided whenever possible for the safety of personnel. Where dead-end aisles are not avoidable, they should be no longer than 10 cabinets or racks in length