{"id":7027,"date":"2022-01-20T08:49:58","date_gmt":"2022-01-20T08:49:58","guid":{"rendered":"https:\/\/buildsoftsupport.com\/?post_type=ht_kb&p=7027"},"modified":"2026-01-12T11:27:30","modified_gmt":"2026-01-12T11:27:30","slug":"can-diamonds-do-the-design-for-cold-formed-steel-cfs-cross-sections","status":"publish","type":"ht_kb","link":"https:\/\/support.buildsoft.eu\/nl\/knowledge-base\/can-diamonds-do-the-design-for-cold-formed-steel-cfs-cross-sections\/","title":{"rendered":"Can Diamonds do the design of cold-formed steel (CFS) cross-sections?"},"content":{"rendered":"\n

Yes, Diamonds can do a design for cold formed cross-sections on the condition the relevant parameters are available. In the article below, we’ll discuss which parameters you need.<\/p>\n\n\n\n

Regular versus thin-walled cross-sections<\/h2>\n\n\n\n

Eurocode makes a distinction between:<\/p>\n\n\n\n

    \n
  1. Regular <\/strong>steel cross-sections who can have the production methods: hot rolled, welded or cold formed<\/strong>
    These cross-sections have a thickness t >= 3mm and are designed using EN 1993-1-1<\/strong>.<\/li>\n\n\n\n
  2. Thin<\/strong> walled<\/strong> steel cross-section who have the production method: cold-formed<\/strong>
    These cross-sections have a thickness t < 3mm and are designed using EN 1993-1-3<\/strong>.<\/li>\n<\/ol>\n\n\n\n

    Diamonds contains a library of common thin walled cross-sections (MRP, Brause, Joris Ide, Sadef). For those sections, Diamonds will automatically apply EN 1993-1-<\/span>3.<\/strong><\/p>\n\n\n\n


    <\/strong>Any other type of cross-section is default calculated according to EN 1993-1-1. However, if the thickness < 3mm and the production method is defined as ‘cold formed’, you can impose Diamonds to use EN 1993-1-<\/span>3 by checking this option. The parameters VzRd, VyRd and fya required for the design, need to be imposed by the user.<\/p>\n\n\n

    \n
    \"\"<\/figure><\/div>\n\n\n

    Effective properties<\/h2>\n\n\n\n

    Eurocode organizes cross-sections into four classes that describe the behaviour of that cross-section.<\/p>\n\n\n\n

      \n
    1. Class 1 & 2 are plastic cross-sections<\/li>\n\n\n\n
    2. Class 3 are elastic cross-sections<\/li>\n\n\n\n
    3. And Class 4 are slender cross-sections.<\/li>\n<\/ol>\n\n\n\n

      For classes 1 to 3, it’s easy to determine the section properties required to do a design according to EN 1993. Class 4<\/strong> on the other hand, requires effectieve properties<\/strong> to do a design according to EN 1993… which are much harder to determine.
      ‘Regular’ steel cross-sections can be of class 1 to 4. Thin walled cross-sections are almost always of class 4.<\/strong><\/p>\n\n\n\n

      The table below gives an overview for which cross-sections Diamonds has these effective properties.<\/p>\n\n\n\n

       <\/th>Parameters for elastic analysis<\/th>Parameters for unity
      check (Eurocode 3)<\/th><\/tr>
      \"\"<\/td>Cross-section procceded by \"\"<\/td>\u2713<\/td>\u2713<\/td><\/tr>
      \"\"<\/td>\"\" \"\" \"\"<\/td>\u2713<\/td>\u2713, until class 3
      For class 4, you should impose the effective properties <\/td><\/tr>
      \"\"\"\" \"\"\"\"
      \"\"\"\"\"\"\"\"  <\/td>      		\u2713<\/td>\u2713<\/td><\/tr>
      \"\"\"\"<\/td>\u2713<\/td>\u2713, until class 3
      For class 4, you should impose the effective properties. Also for class 4, EN 1993-1-6: Strength and stability of shell structures<\/em> applies. Diamonds does not support this part of Eurocode.<\/td><\/tr>
      \"\"\"\"\"\"\"\"\"\"\"\"<\/td>\u2713<\/td>not possible [1]<\/sup><\/td><\/tr>
      \"\" \"\"\"\"\"\"<\/td>\u2713<\/td>not possible [2]<\/sup><\/td><\/tr>
      \"\"
      (for Section Utility manual, click here<\/a>)<\/td>      		\u2713<\/td>you should impose additional properties<\/a>
      For class 4, you should also impose the effective properties.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

      [1]<\/sup> For the cold formed cross-sections in the library, the effective properties have been provided by the manufacturers. If you select one of these cross-section shapes and change its dimensions or impose them from zero, Diamonds is not capable of recalculating these effective properties! Therefor you cannot run a unity check on these cross-sections
      [2]<\/sup> These cross-sections shapes are intended for concrete design.<\/p>\n\n\n\n

      Which commercial thin walled cross-sections are in Diamonds<\/h2>\n\n\n\n

      The table below gives an overview of all commercial thin walled cross-sections in Diamonds:<\/p>\n\n\n\n

      MRP<\/th>Brausa<\/th>Sadef<\/th>Joris Ide<\/th><\/tr>
      • C<\/li>
      • C+<\/li>
      • C+ combi<\/li>
      • Sigma<\/li>
      • Sigma +<\/li>
      • Sigma + combi<\/li>
      • ZED<\/li><\/ul><\/td>
      • CEBRAU<\/li>
      • SIGMABRAU<\/li>
      • ZETABRAU<\/li>
      • ZETAVOR<\/li><\/ul><\/td>
      • CEE<\/li>
      • CEE-plus<\/li>
      • I-plus<\/li>
      • IS-plus<\/li>
      • Sigma<\/li>
      • Sigma plus<\/li>
      • U<\/li>
      • ZED<\/li><\/ul><\/td>
      • \u200bconnect<\/li>
      • \u200bDelta<\/li>
      • Sigma -1<\/li>
      • Sigma -2<\/li>
      • ZED -1<\/li>
      • ZED -2<\/li><\/ul><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

        Yes, Diamonds can do a design for cold formed cross-sections on the condition the relevant parameters are available. In the article below, we’ll discuss which parameters you need. Regular versus thin-walled cross-sections Eurocode makes a distinction between: Diamonds contains a library of common thin walled cross-sections (MRP, Brause, Joris Ide,…<\/p>\n","protected":false},"author":3,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":[],"ht-kb-category":[69],"ht-kb-tag":[274,927,273,928],"_links":{"self":[{"href":"https:\/\/support.buildsoft.eu\/nl\/wp-json\/wp\/v2\/ht-kb\/7027"}],"collection":[{"href":"https:\/\/support.buildsoft.eu\/nl\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/support.buildsoft.eu\/nl\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/nl\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/nl\/wp-json\/wp\/v2\/comments?post=7027"}],"version-history":[{"count":2,"href":"https:\/\/support.buildsoft.eu\/nl\/wp-json\/wp\/v2\/ht-kb\/7027\/revisions"}],"predecessor-version":[{"id":23756,"href":"https:\/\/support.buildsoft.eu\/nl\/wp-json\/wp\/v2\/ht-kb\/7027\/revisions\/23756"}],"wp:attachment":[{"href":"https:\/\/support.buildsoft.eu\/nl\/wp-json\/wp\/v2\/media?parent=7027"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/nl\/wp-json\/wp\/v2\/ht-kb-category?post=7027"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/nl\/wp-json\/wp\/v2\/ht-kb-tag?post=7027"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}