{"id":32542,"date":"2026-10-27T15:03:27","date_gmt":"2026-10-27T15:03:27","guid":{"rendered":"https:\/\/support.buildsoft.eu\/docs\/section-utility\/other-functions\/imposed-classes\/"},"modified":"2026-10-29T10:55:01","modified_gmt":"2026-10-29T10:55:01","slug":"imposed-classes","status":"publish","type":"docs","link":"https:\/\/support.buildsoft.eu\/fr\/docs\/section-utility\/other-functions\/imposed-classes\/","title":{"rendered":"Imposed classes"},"content":{"rendered":"\n<p>During an elastic analysis, Diamonds will determine the internal forces, elastic stresses&nbsp;and the elastic deformations&nbsp;in a steel structure. During the <strong>design<\/strong>, it will check if the chosen cross-section (HEA, IPE, \u2026) are capable of resisting those internal forces.<\/p>\n\n\n\n<p>In EN 1993-1-1 this design consists of two parts:<\/p>\n\n\n\n<ul>\n<li>verification of the strength (will the bar break or not?)<\/li>\n\n\n\n<li>verification of the stability (will the bar buckle or not?)<\/li>\n<\/ul>\n\n\n\n<p>To perform these calculations we need additional parameters next to the section properties. EN 1993-1-1 gives rules to calculate these additional parameters for basic shapes (I, H, T, L, O, \u25af). But no rules are provided for non basic shapes (\ud83d\udfa5, double L, \u25b3, or combinations of the basic shapes\u2026 = Section Utility cross-sections).<\/p>\n\n\n\n<p>If you do wish to design cross-sections made in Section Utility, then you should enter the parameters after the button <strong>\u2018Imposed section classes\u2019<\/strong>:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2026\/10\/SU_imposedclasses.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2026\/10\/SU_imposedclasses.png\" alt=\"\" class=\"wp-image-32641\" width=\"355\" height=\"262\"\/><\/a><\/figure>\n\n\n\n<p>An overview of all the required parameters can be found <a href=\"https:\/\/support.buildsoft.eu\/knowledge-base\/no-steel-verification-for-section-utility-profile\/\" data-type=\"ht_kb\" data-id=\"151\" target=\"_blank\" rel=\"noreferrer noopener\">in this article.<\/a><\/p>\n","protected":false},"featured_media":0,"parent":32535,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","doc_tag":[],"comment_count":0,"_links":{"self":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/docs\/32542"}],"collection":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/types\/docs"}],"replies":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/comments?post=32542"}],"version-history":[{"count":2,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/docs\/32542\/revisions"}],"predecessor-version":[{"id":32642,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/docs\/32542\/revisions\/32642"}],"up":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/docs\/32535"}],"next":[{"title":"Interaction diagram","link":"https:\/\/support.buildsoft.eu\/fr\/docs\/section-utility\/other-functions\/interaction-diagram\/","href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/docs\/32543"}],"prev":[{"title":"Layers","link":"https:\/\/support.buildsoft.eu\/fr\/docs\/section-utility\/other-functions\/layers\/","href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/docs\/32541"}],"wp:attachment":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/media?parent=32542"}],"wp:term":[{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/doc_tag?post=32542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}