Structural pallet rack has three components of prime importance:

1. The Upright Columns. Loads placed on the beams are transferred through the connector to the upright posts. The total weight within the rack is ultimately carried by the uprights. Structural applications are superior where abuse might be anticipated.
2. The Connector. Joins the beam to the upright to form the storage rack. A well designed connector is critical because load-carrying capacity of a rack is dependent upon safe transfer of the load from the beams to the upright. The type of connector you choose should be done carefully.
3. The Beams. There are basically two types of beams available: Structural and Step. Structural are most used when heavy load carrying capacity or abuse resistance is needed. Structural beams provide the highest load bearing capacity available. Step beams provide selectivity in conjunction with wood decking.