Structural Design
Ridg-U-Rak... the name to Trust for structural integrity for more than 60 years.
When a steel section is cold-formed from flat sheet or strip the yield strength, and to a lesser extent the ultimate strength, is increased as a result of this cold working, particularly in the bends of the section.1
Ridg-U-Rak set the standard for durability with its patented six-bend, roll formed column and high capacity beam designs. These designs have helped position Ridg-U-Rak as the most trusted named in storage rack solutions for 
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ore than 60 years.
Roll formed columns and beams offer a high weight to capacity ratio. Roll formed columns and beams are lighter weight than structural columns and provide excellent overall capacity. Columns are assembled into uprights with formed spaced and welded in place to create upright.
Benefits to cold formed steel structures include:
* Lightness in weight
* High strength and stiffness
* Ease of prefabrication and mass production
* Fast and easy erection and installation
* Substantial elimination of delays due to weather
* More accurate detailing
* No shrinking and no creeping at ambient temperatures
* No formwork needed
* Uniform quality
* Economy in transportation and handling
* Recyclable material
Ridg-U-Rak’s columns are available in a variety of sizes and beam connection configurations. A wide range of sizes and profiles are offered to meet virtually any capacity requirement and come in both teardrop and original slotted beam connection designs. This versatility makes Ridg-U-Rak the ideal choice for new installations as well as any type of storage system expansion. For detail on sizes and profiles, go to slotted pallet rack or teardrop compatible.
Cold-formed steel structural
In building construction there are basically two types of structural steel: hot rolled steel shapes and cold-formed steel shapes. The hot rolled steel shapes are formed at elevated temperatures while the cold-formed steel shapes are formed at room temperature. Cold-formed steel structural members are shapes commonly manufactured from sheet metal or strip material. The manufacturing process involves forming the material by either press-braking or cold roll forming to achieve the desired shape.
When steel is formed by press-braking or cold rolled forming, there is a change in the mechanical properties of the material by virtue of the cold working of the metal. When a steel section is cold-formed from flat sheet or strip the yield strength, and to a lesser extent the ultimate strength, is increased as a result of this cold working, particularly in the bends of the section.
For more information on cold formed steel structures and ANSI specifications, go to
https://en.wikipedia.org/wiki/Cold_formed_steel
Cold-formed steel (CFS) members have been used in buildings, bridges, storage racks, grain bins, car bodies, railway coaches, highway products, transmission towers, transmission poles, drainage facilities, various types of equipment and others. These types of sections are cold-formed from steel sheet, strip, plate, or flat bar in roll forming machines or by press brake (machine press) or bending operations. The material thicknesses for such thin-walled steel members usually range from 0.0147 in. (0.373 mm) to about ¼ in. (6.35 mm). Steel plates and bars as thick as 1 in. (25.4 mm) can also be cold-formed successfully into structural shapes (AISI, 2007b).