This standard specifies minimum requirements for the structural design, testing, and utilization of industrial steel storage racks, including movable-shelf racks, rack-supported systems, and automated storage and retrieval systems (sometimes referred to as “stacker racks”) constructed of cold-formed and/or hot-rolled steel structural members. Such rack types also include push-back rack, pallet-flow rack, case-flow rack, pick modules, and rack-supported platforms. This standard is also intended to be applied to the design of the storage rack portion of any rack structure that provides support to the exterior walls and roof, except as noted. It does not apply to other types of racks, such as drive-in or drive-through racks, cantilever racks, portable racks, or to racks made of material other than steel.