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When a ship is rolling in a sea or is struck by beam waves, the ship’s structure is liable to distort in a transverse direction as shown.

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One of the fundamental tools in material handling industry, racking (rack) is a steel structure composed of two or more upright frames, beams, and connectors for the purpose of supporting materials in storage. Welding, bolting or clipping are the typical methods to assemble them. Steel pallet rack structures are built to enable operators to store the maximum of product while providing accessibility for order picking, protecting the product, as well as organizing the flow of product within a warehouse.