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1. What is a "thin element"?
As the term "thin element" is being used more and more frequently, it is essential to clarify this notion before going any further. Depending on the context, or the interlocutor, in good faith and out of habit, it can take on a variety of meanings, leading to what is often a misuse of language.
In the sense of strength of materials, a "thin" element is one whose dimensions in plan are "greater" than its thickness; this definition is particularly valid for so-called "flat" elements such as ribbed sheet, used mainly in roofing or cladding applications.
As soon as the element becomes "long", as in the case of purlin, beam or joist profiles, it is more appropriate to consider it as thin when its length and the width of its constituent walls are greater than its thickness; the order of magnitude of 10...
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- Continuous hot-dip coated steel flat products for cold forming – Technical delivery conditions - NF EN 10346 AFNOR - 2015
- Hot-rolled flat products in high-strength steel for cold forming – Part 1: General technical delivery conditions - NF EN 10149-1 AFNOR - 2013
- Hot-rolled flat products in high-strength steel for cold forming – Part 2: Technical delivery conditions for thermomechanically rolled steels...
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