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46) Step beam

A beam that provides two horizontal surfaces on which the rack decking can be placed.  Usually the top surface supports the deck and the lower surface supports the reinforcing members.

47) Unit Load AS/RS

Machines that store large loads (usually 1,000+ pounds), typically on pallets with storage rack structure, reaching 100 feet or more tall.

48) Nonstep beam

A beam that offers only one horizontal surface on which the rack decking can be placed.  Examples of nonstep beams are: "Box" sections, tubing channels, and I-beams.

49) Stack only container

A container that possesses self-supporting and straight walls.  This feature means that the container walls are straight and can support the total weight of several stacked containers.  Stackability reduces the required floor or rack storage space for empty containers.

50) R- Mark

In 1998, the members of the Rack Manufacturers Institute (RMI) voluntarily chose to cause conformance to RMI 97 and any successor documents(s) to be a condition of membership in the Association. In 1999, the members of RMI agreed to a certification process administered through a panel of independent Registered Professional Engineers.  Certification requires the submitter to demonstrate a working knowledge of RMI 97 including delivering evidence of various physical tests needed to compute frame and beam load tables. Upon satisfactory completion of the Certification Process, the submitter is awarded a license to apply a unique registered R-Mark to designs.  The R-Mark is only applied by a Licensed Professional Engineer along side of his/her PE seal. The process is open to all rack manufacturers.  RMI encourages specifiers and users of Industrial Steel Storage Rack to consider the value of R-Mark certification when applying racking solutions.

51) Case pick from pallet

This is a selection activity performed within a specific type of storage area (often pallet rack).  Merchandise movement into these locations is in pallet load quantities from receiving or reserve storage locations.  Merchandise movement out of these locations is in case quantities.

52) Small parts storage

The system of storing small parts/items usually utilizing bin shelving and rack and storing the parts in plastic or metal bins and containers.  Carousels can be used for storing and retrieving these smaller parts.

53) Reach truck

Industrial trucks equipped with a telescoping fork arrangement that permits the stacking of loads double deep. For storage depths greater than two, there is at least one example in Europe where the fork unit mechanically disengages from the mast allowing it to run into the rack on narrow rails under its own power which is derived from the truck via an umbilical cord. Applications like this can be considered a very special case of a drive-in type storage rack.

54) Waterfall

Descriptive term for the flanged portion of the wire mesh rack decking.  Most commonly the waterfall extends downwards over the outside face of the beam. The waterfall should extend past the radius of the beam a sufficient distance to minimize the potential for accidental displacement of the decking.

55) Decking

The material, generally made from welded wire, that is placed on shelves, rack load beams or walks to support loads of variable sizes. The decks or flooring of a mezzanine can be made of several different types of materials depending upon the requirements, features and capacity of the mezzanine. These flooring/decking options may include bar grating, plank grating, wood planking, plywood, composite materials and cement.

56) Robotic Storage Retrieval system (RSR)

A Robotic Storage Retrieval solution (RSR) storage and retrieval system consists of automated equipment that stores and retrieves products automatically to/from various styles of racking systems. The robotic retrieval system stores the product in a compact manner when compared to more traditional forms of storage. The automated equipment that stores and retrieves product can be in many forms/configurations and is typically under some type of computer direction. Heights for these systems can vary from low to in excess of 100+ feet.

57) Side loader truck

An industrial truck with lifting capabilities and able to accommodate the narrowest of aisles, depending upon the model and type, all the way down to the 5 foot range. Trucks operating in this range are sometimes called very narrow aisle (VNA) trucks. With the exception of the platform type sideloader, the fork and/or the entire mast on a VNA style truck is capable of rotating or swiveling 90 degrees left or right within the aisle from the down aisle orientation. Some manufacturers have models that can stack in storage racks 10-12 pallets high.

58) Order picking

Order picking or order selection is the process of retrieving individual items (from storage locations) for the purpose of fulfilling an order for a customer. Schemes by which to achieve efficient order picking will vary widely. However, in all cases it involves locating the items in storage; creating a plan for retrieving the items; physically picking the items (either automatically or manually); sorting and/or assembling them into discrete orders; and in the end even packaging the orders for delivery. Although defined as a process, order picking cannot be achieved without the appropriate computer software and mechanical equipment, including the storage medium, such as pallet racks, shelving, AS/RS (including carousels) and flow delivery racks, and a means for transporting items from receiving to storage and from storage to packaging and shipment. A variety of industrial trucks and conveyors will be found in most order picking applications. Order picking may also involve robotic like devices for physically picking discrete items from their storage location. See also Warehouse Management Systems or WMS .

59) Horizontal Carousels

As a storage device, a horizontal carousel consists of a fixed number of adjacent storage columns or bays that are mechanically linked to either an overhead or floor mounted drive mechanism to form a complete loop. Each column is divided into a fixed number of storage location or bins which in most applications are constructed of a welded wire frame. Loads consisting of containers or totes may be inserted and retrieved either manually or by an automatic inserter/extractor mechanism. However, rotation of the carousel, whereby a specific storage location is brought to the picking location, is almost always controlled automatically. See also Vertical Carousel , Vertical Lift Module , Rotary Rack , and/or AS/RS .