{"id":13065,"date":"2024-07-10T12:50:32","date_gmt":"2024-07-10T12:50:32","guid":{"rendered":"https:\/\/support.buildsoft.eu\/?post_type=ht_kb&#038;p=13065"},"modified":"2025-04-15T15:04:06","modified_gmt":"2025-04-15T15:04:06","slug":"dc-ec-05-longitudonal-reinforcement-in-column-under-compression-and-bending","status":"publish","type":"ht_kb","link":"https:\/\/support.buildsoft.eu\/es\/knowledge-base\/dc-ec-05-longitudonal-reinforcement-in-column-under-compression-and-bending\/","title":{"rendered":"DC EC 05: longitudinal reinforcement in column under compression and bending"},"content":{"rendered":"<h2>Description<\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13085\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2024\/07\/DC-EC-05a.png\" alt=\"\" width=\"143\" height=\"400\" \/><\/p>\n<div class=\"su-table\">\n<table>\n<tbody>\n<tr>\n<th rowspan=\"4\">Geometry<\/th>\n<td style=\"text-align: right\">Cross-section:<\/td>\n<td><img loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-d082c1d7d2d4a058fc597f3896f2ac89_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#098;&#061;&#050;&#053;&#048;&#109;&#109;\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"89\" style=\"vertical-align: 0px\" \/><br \/>\n<img loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-041aa2d772dcd1ce8317c0835bc6ad14_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#104;&#061;&#052;&#048;&#048;&#109;&#109;\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"92\" style=\"vertical-align: 0px\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: right\">Material:<\/td>\n<td>C25\/30<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: right\">Concrete cover:<\/td>\n<td><img loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-f1363dca8310fc6315c53676aa55b345_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#100;&#061;&#052;&#048;&#109;&#109;\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"82\" style=\"vertical-align: 0px\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: right\">Reinforcement distribution:<\/td>\n<td>Identical<br \/>\nOnly upper and lower<\/td>\n<\/tr>\n<tr>\n<th>Load<\/th>\n<td style=\"text-align: right\">Design forces:<\/td>\n<td><img loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-9b533b4442a3bbb8ec3995eabc25f4a5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#078;&#095;&#123;&#069;&#100;&#046;&#085;&#076;&#083;&#125;&#061;&#051;&#048;&#048;&#092;&#116;&#101;&#120;&#116;&#123;&#107;&#078;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"139\" style=\"vertical-align: -3px\" \/><br \/>\n<img loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-39cf51dcbe01c5804f3dbf665c9ec6ae_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#077;&#095;&#123;&#069;&#100;&#046;&#085;&#076;&#083;&#125;&#061;&#049;&#050;&#048;&#092;&#116;&#101;&#120;&#116;&#123;&#107;&#078;&#109;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"157\" style=\"vertical-align: -3px\" \/><\/td>\n<\/tr>\n<tr>\n<th>Standard<\/th>\n<td><\/td>\n<td>EN 1992-1-1 [- -]<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"su-accordion su-u-trim\"><div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-plus su-spoiler-closed\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>How to model a column in Diamonds that can be compared with handcalculations<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">\n<ul>\n<li>Diamonds always looks for the most economical reinforcement ratio. This is not always neat according to the local axes of the rod, but often according to the main axes of inertia. While in hand calculations the load is placed along a local axis and the calculation is also performed in that direction. To impose that behavior in Diamonds, you must choose only top and bottom reinforcement.<br \/>\nBy choosing an &#8216;identical&#8217; reinforcement distribution, you ask him to choose the top and bottom reinforcement equally. This is a reinforcement distribution for which graphs\/tables are suitable for manual calculations.<br \/>\n<img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13086\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2024\/07\/DC-EC-05a2.png\" alt=\"\" width=\"500\" height=\"643\" \/><\/li>\n<li>Eurocode 2 offers simplified methods (EN 1992-1-1 \u00a75.8.7 and \u00a75.8.8) to include 2nd order effects and imperfections into the results. The <a href=\"https:\/\/support.buildsoft.eu\/knowledge-base\/how-to-do-the-elastic-analysis-for-concrete\/\" target=\"_blank\" rel=\"noopener\">method based on nominal curvature<\/a> (EN 1992-1-1 \u00a75.8.8) is implemented in Diamonds. This method results in an increased bending moment.<br \/>\nIn Diamonds the method for nominal curvature is selected by default. Because we neglected these effects in this example, the method must be deselected.<br \/>\n<img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13087\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2024\/07\/DC-EC-05a3.png\" alt=\"\" width=\"500\" height=\"427\" \/><\/li>\n<li>According to Eurocode 2, reinforcement is required for the forces in ULS, possibly increased with additional reinforcement to limit the stresses in SLS. It is not known in advance whether additional reinforcement will be required for SLS. Since we are only doing a ULS calculation in this example, we turn off the stress limits in SLS in Diamonds (by making a copy of C25\/30 and editing the copy).<br \/>\n<img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13094\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2024\/07\/DC-EC-05a4.png\" alt=\"\" width=\"500\" height=\"325\" \/> <img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-13095\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2024\/07\/DC-EC-05a5.png\" alt=\"\" width=\"500\" height=\"325\" \/><\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<h2>Independent reference results<\/h2>\n<div class=\"su-accordion su-u-trim\"><div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-plus su-spoiler-closed\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>Open handcalculations<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">\n<p class=\"ql-center-displayed-equation\" style=\"line-height: 36px;\"><span class=\"ql-right-eqno\"> &nbsp; <\/span><span class=\"ql-left-eqno\"> &nbsp; <\/span><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-caf86c40b2421af78c1fd7ee767eb323_l3.png\" height=\"36\" width=\"241\" class=\"ql-img-displayed-equation quicklatex-auto-format\" alt=\"&#92;&#091;&#92;&#100;&#101;&#108;&#116;&#97;&#95;&#49;&#61;&#92;&#100;&#101;&#108;&#116;&#97;&#95;&#50;&#61;&#92;&#102;&#114;&#97;&#99;&#123;&#100;&#95;&#49;&#125;&#123;&#100;&#125;&#61;&#92;&#102;&#114;&#97;&#99;&#123;&#52;&#48;&#109;&#109;&#125;&#123;&#51;&#54;&#48;&#109;&#109;&#125;&#61;&#48;&#44;&#49;&#49;&#92;&#093;\" title=\"Rendered by QuickLaTeX.com\"\/><\/p>\n<p class=\"ql-center-displayed-equation\" style=\"line-height: 40px;\"><span class=\"ql-right-eqno\"> &nbsp; <\/span><span class=\"ql-left-eqno\"> &nbsp; <\/span><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-e572f8b3740691d644b5fd0be0be2c59_l3.png\" height=\"40\" width=\"398\" class=\"ql-img-displayed-equation quicklatex-auto-format\" alt=\"&#92;&#091;&#118;&#95;&#100;&#61;&#92;&#102;&#114;&#97;&#99;&#123;&#78;&#95;&#123;&#69;&#100;&#46;&#85;&#76;&#83;&#125;&#125;&#123;&#98;&#92;&#99;&#100;&#111;&#116;&#32;&#100;&#92;&#99;&#100;&#111;&#116;&#32;&#102;&#95;&#123;&#99;&#100;&#125;&#125;&#61;&#92;&#102;&#114;&#97;&#99;&#123;&#51;&#48;&#48;&#92;&#116;&#101;&#120;&#116;&#123;&#107;&#78;&#125;&#125;&#123;&#50;&#53;&#48;&#109;&#109;&#92;&#99;&#100;&#111;&#116;&#32;&#51;&#54;&#48;&#109;&#109;&#92;&#99;&#100;&#111;&#116;&#32;&#49;&#54;&#44;&#54;&#92;&#116;&#101;&#120;&#116;&#123;&#77;&#80;&#97;&#125;&#125;&#61;&#48;&#44;&#50;&#92;&#093;\" title=\"Rendered by QuickLaTeX.com\"\/><\/p>\n<p class=\"ql-center-displayed-equation\" style=\"line-height: 41px;\"><span class=\"ql-right-eqno\"> &nbsp; <\/span><span class=\"ql-left-eqno\"> &nbsp; <\/span><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-963673cdc1ede425167e1c443a4d5e9a_l3.png\" height=\"41\" width=\"447\" class=\"ql-img-displayed-equation quicklatex-auto-format\" alt=\"&#92;&#091;&#92;&#109;&#117;&#95;&#100;&#61;&#92;&#102;&#114;&#97;&#99;&#123;&#77;&#95;&#123;&#69;&#100;&#46;&#85;&#76;&#83;&#125;&#125;&#123;&#98;&#92;&#99;&#100;&#111;&#116;&#32;&#100;&#94;&#50;&#32;&#92;&#99;&#100;&#111;&#116;&#32;&#102;&#95;&#123;&#99;&#100;&#125;&#125;&#61;&#92;&#102;&#114;&#97;&#99;&#123;&#49;&#50;&#48;&#92;&#116;&#101;&#120;&#116;&#123;&#107;&#78;&#109;&#125;&#125;&#123;&#50;&#53;&#48;&#109;&#109;&#92;&#99;&#100;&#111;&#116;&#32;&#40;&#51;&#54;&#48;&#109;&#109;&#41;&#94;&#50;&#92;&#99;&#100;&#111;&#116;&#32;&#49;&#54;&#44;&#54;&#92;&#116;&#101;&#120;&#116;&#123;&#77;&#80;&#97;&#125;&#125;&#61;&#48;&#44;&#50;&#50;&#50;&#32;&#92;&#093;\" title=\"Rendered by QuickLaTeX.com\"\/><\/p>\n<p>Graph 10.2a from <em>Gewapend beton: numeri<\/em> (<a href=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2024\/07\/DC-EC-05c-Graph10.2a.png\" target=\"_blank\" rel=\"noopener\">click here to open<\/a> the graph) shows <img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-021c3246e1782ded5f86f0c60945b050_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#111;&#109;&#101;&#103;&#97;&#32;&#95;&#49;&#61;&#92;&#111;&#109;&#101;&#103;&#97;&#32;&#95;&#50;\" title=\"Rendered by QuickLaTeX.com\" height=\"11\" width=\"60\" style=\"vertical-align: -3px;\"\/> as a function of <img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-ae5c35d7154d6b3b5694d02b588c122a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#109;&#117;&#95;&#100;&#44;&#32;&#118;&#95;&#100;\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"43\" style=\"vertical-align: -4px;\"\/> and <img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-da77597c281dfa79c04e1cf7fd984666_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#101;&#108;&#116;&#97;&#95;&#49;\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"14\" style=\"vertical-align: -3px;\"\/>. Using this graph and the results above, we can deduct:<\/p>\n<p class=\"ql-center-displayed-equation\" style=\"line-height: 15px;\"><span class=\"ql-right-eqno\"> &nbsp; <\/span><span class=\"ql-left-eqno\"> &nbsp; <\/span><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-4cb970b9c73eebae66f35065d4e1c469_l3.png\" height=\"15\" width=\"115\" class=\"ql-img-displayed-equation quicklatex-auto-format\" alt=\"&#92;&#091;&#92;&#111;&#109;&#101;&#103;&#97;&#32;&#95;&#49;&#61;&#92;&#111;&#109;&#101;&#103;&#97;&#32;&#95;&#50;&#61;&#48;&#46;&#49;&#53;&#92;&#093;\" title=\"Rendered by QuickLaTeX.com\"\/><\/p>\n<p class=\"ql-center-displayed-equation\" style=\"line-height: 1px;\"><span class=\"ql-right-eqno\"> &nbsp; <\/span><span class=\"ql-left-eqno\"> &nbsp; <\/span><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-0a6c31ab5392380fcb53d537a7fae0e1_l3.png\" height=\"1\" width=\"1\" class=\"ql-img-displayed-equation quicklatex-auto-format\" alt=\"&#92;&#091;&#92;&#093;\" title=\"Rendered by QuickLaTeX.com\"\/><\/p>\n<p class=\"ql-center-displayed-equation\" style=\"line-height: 42px;\"><span class=\"ql-right-eqno\"> &nbsp; <\/span><span class=\"ql-left-eqno\"> &nbsp; <\/span><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/ql-cache\/quicklatex.com-3960d92cc9ea997c302a668c1ed87138_l3.png\" height=\"42\" width=\"584\" class=\"ql-img-displayed-equation quicklatex-auto-format\" alt=\"&#92;&#091;&#65;&#95;&#123;&#115;&#49;&#125;&#61;&#65;&#95;&#123;&#115;&#50;&#125;&#61;&#61;&#92;&#111;&#109;&#101;&#103;&#97;&#95;&#49;&#32;&#92;&#99;&#100;&#111;&#116;&#32;&#98;&#32;&#92;&#99;&#100;&#111;&#116;&#32;&#100;&#92;&#99;&#100;&#111;&#116;&#32;&#92;&#102;&#114;&#97;&#99;&#123;&#102;&#95;&#123;&#99;&#100;&#125;&#125;&#123;&#102;&#95;&#123;&#121;&#100;&#125;&#125;&#61;&#32;&#48;&#44;&#49;&#53;&#32;&#92;&#99;&#100;&#111;&#116;&#32;&#50;&#53;&#48;&#109;&#109;&#32;&#92;&#99;&#100;&#111;&#116;&#32;&#51;&#54;&#48;&#109;&#109;&#32;&#92;&#99;&#100;&#111;&#116;&#32;&#92;&#102;&#114;&#97;&#99;&#123;&#49;&#54;&#46;&#54;&#92;&#116;&#101;&#120;&#116;&#123;&#77;&#80;&#97;&#125;&#125;&#123;&#52;&#51;&#52;&#44;&#56;&#92;&#116;&#101;&#120;&#116;&#123;&#77;&#80;&#97;&#125;&#125;&#32;&#61;&#32;&#53;&#49;&#56;&#109;&#109;&#94;&#50;&#92;&#093;\" title=\"Rendered by QuickLaTeX.com\"\/><\/p>\n<\/div><\/div><\/div>\n<h2>Diamonds results and comparison<\/h2>\n<p style=\"text-align: center;\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-13089 aligncenter\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2024\/07\/DC-EC-05c.png\" alt=\"\" width=\"200\" height=\"442\" \/><\/p>\n<p style=\"text-align: center;\"><strong>Longitudinal reinforcement calculated by Diamonds (EN 1992-1-1 [- -])<\/strong><\/p>\n<div class=\"su-table\">\n<table>\n<tbody>\n<tr>\n<th>Results<\/th>\n<th>Independent reference<\/th>\n<th>Diamonds<\/th>\n<th>Difference<\/th>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Longitudinal reinforcement<\/td>\n<td style=\"text-align: center\">518mm\u00b2<\/td>\n<td style=\"text-align: center\">514mm\u00b2<\/td>\n<td style=\"text-align: center\">\u2248 0%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>References<\/h2>\n<ul>\n<li>EN 1992-1-1: 2005 + AC: 2010<\/li>\n<li><a href=\"https:\/\/www.lannoocampus.be\/nl\/producten\/technische-wetenschappen-algem\/gewapend-beton\" target=\"_blank\" rel=\"noopener\">Van Hooymissen, L., Spegelaere, M., Van Gysel, A., &amp; De Vylder, W. (2002).\u00a0<i>Gewapend beton<\/i>. Academia Press<\/a><br \/>\nKeep in mind that the calculations in this book are made done using the NBN B15-002\/ ENV 1992-1. Both old standards. However, this book still remains a good reference if you want to understand how reinforcement calculations work.<\/li>\n<li><a href=\"https:\/\/opac.kbr.be\/Library\/doc\/SYRACUSE\/20753137\/gewapend-beton?_lg=nl-BE\" target=\"_blank\" rel=\"noopener\">Gruyaert, E., &amp; Minne, P. (2019). Gewapend beton: numeri<\/a>.<br \/>\nThis reference is a summary of <i>Gewapend beton (2002) <\/i>but with updated formula and principles according to EN 1992-1-1. This document contains multiple graphs and tables helping the design of reinforced concrete.<\/li>\n<\/ul>\n<ul>\n<li>Tested in Diamonds 2026.<\/li>\n<\/ul>\n\n","protected":false},"excerpt":{"rendered":"<p>Description Independent reference results Diamonds results and comparison Longitudinal reinforcement calculated by Diamonds (EN 1992-1-1 [- -]) References EN 1992-1-1: 2005 + AC: 2010 Van Hooymissen, L., Spegelaere, M., Van Gysel, A., &amp; De Vylder, W. (2002).\u00a0Gewapend beton. Academia Press Keep in mind that the calculations in this book are&#8230;<\/p>\n","protected":false},"author":3,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":[],"ht-kb-category":[1213],"ht-kb-tag":[],"_links":{"self":[{"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb\/13065"}],"collection":[{"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/comments?post=13065"}],"version-history":[{"count":3,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb\/13065\/revisions"}],"predecessor-version":[{"id":15125,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb\/13065\/revisions\/15125"}],"wp:attachment":[{"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/media?parent=13065"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb-category?post=13065"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb-tag?post=13065"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}