{"id":12831,"date":"2026-01-21T08:58:00","date_gmt":"2026-01-21T00:58:00","guid":{"rendered":"https:\/\/www.wedospace.com\/?p=12831"},"modified":"2026-03-05T17:49:24","modified_gmt":"2026-03-05T09:49:24","slug":"how-to-add-onto-a-steel-building","status":"publish","type":"post","link":"https:\/\/www.wedospace.com\/fr\/how-to-add-onto-a-steel-building\/","title":{"rendered":"Comment ajouter un b\u00e2timent en acier"},"content":{"rendered":"<div class=\"wp-block-themepark-block-themepark-wright content-super-p  blog-jiange\" style=\"font-size:17px;line-height:28px;color:#211c1c;padding:10px 20px;\">\n<div class=\"wp-block-column\">\n<p>Pour ajouter un b\u00e2timent en acier, il existe principalement deux types de sch\u00e9mas structurels sur le bureau : soit une \"extension du mur d'extr\u00e9mit\u00e9\", c'est-\u00e0-dire un allongement de la maison dans le sens de la longueur ; soit un \"ajout en appentis\", qui utilise la colonne d'origine pour s'\u00e9largir vers l'ext\u00e9rieur.<\/p>\n\n\n\n<p>De nombreux propri\u00e9taires ont tendance \u00e0 choisir de construire des maisons suppl\u00e9mentaires pour la simple raison qu'elles sont rentables et qu'elles interf\u00e8rent le moins possible avec la production existante. Cependant, si vous avez besoin d'un grand espace avec un int\u00e9rieur compl\u00e8tement transparent et sans ligne de vue, la maison ne r\u00e9soudra pas le probl\u00e8me et le mur sup\u00e9rieur devra \u00eatre prolong\u00e9. Toutefois, cette solution n\u00e9cessite g\u00e9n\u00e9ralement le renforcement de l'ossature d'origine pour faire face \u00e0 la nouvelle charge structurelle.<\/p>\n\n\n\n<p>Mais quelle que soit l'option choisie, les nouvelles fondations doivent \u00eatre coul\u00e9es ind\u00e9pendamment. Cela permet de faire face aux tassements irr\u00e9guliers et d'\u00e9viter les fissures structurelles.<\/p>\n\n\n\n<p>Lors de la planification de l'expansion, il est indispensable, pour garantir la s\u00e9curit\u00e9 et la durabilit\u00e9 du projet, de comprendre les principes m\u00e9caniques sp\u00e9cifiques de ces deux sch\u00e9mas et les exigences rigoureuses en mati\u00e8re de fondations. Permettez-moi de vous pr\u00e9senter les d\u00e9tails de ces deux syst\u00e8mes et de vous expliquer pourquoi le traitement des fondations est si important.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"435\" src=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-80-1024x435.jpg\" alt=\"Photos of steel structure factory buildings\" class=\"wp-image-12832\" srcset=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-80-1024x435.jpg 1024w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-80-300x127.jpg 300w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-80-768x326.jpg 768w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-80-18x8.jpg 18w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-80.jpg 1166w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Scheme_1_The_Lean-To_Addition-horizontal_Widening\"><\/span>Sch\u00e9ma 1 : L'ajout d'un appentis - l'\u00e9largissement horizontal<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Pour les propri\u00e9taires qui accordent de l'importance au contr\u00f4le des co\u00fbts et qui ne veulent pas que la construction interf\u00e8re avec les activit\u00e9s quotidiennes, les rideaux sont g\u00e9n\u00e9ralement le premier choix. L'essentiel de cette m\u00e9thode consiste \u00e0 \"\u00e9largir\" le b\u00e2timent, et non \u00e0 le \"rallonger\".<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Using_The_Existing_Column\"><\/span>Utilisation de la colonne existante<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Pourquoi est-ce la solution la plus \u00e9conomique ? Parce qu'elle \"mange\" l'ancien capital - en utilisant directement la colonne lat\u00e9rale d'origine du b\u00e2timent. Les poutres du toit de la nouvelle maison drap\u00e9e sont directement pos\u00e9es sur le corbeau ou la colonne de la structure d'origine. Comme elle est accroch\u00e9e \u00e0 un cadre d\u00e9j\u00e0 \u00e9tabli, vous \u00e9conomisez naturellement le co\u00fbt \u00e9lev\u00e9 des mat\u00e9riaux n\u00e9cessaires \u00e0 la construction d'un nouveau mur lat\u00e9ral ind\u00e9pendant.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Single_Slope_Design\"><\/span>Conception \u00e0 pente unique<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Ce type d'ajout forme g\u00e9n\u00e9ralement un toit \u00e0 pente unique, \"s'appuyant\" sur le b\u00e2timent d'origine. La pente est g\u00e9n\u00e9ralement orient\u00e9e \u00e0 l'oppos\u00e9 du b\u00e2timent principal afin d'assurer un bon drainage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Extremely_Low_Interference\"><\/span>Interf\u00e9rence extr\u00eamement faible<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Comme il est ajout\u00e9 sur le c\u00f4t\u00e9 du b\u00e2timent, il n'est pas n\u00e9cessaire de retirer les panneaux muraux d'origine et ne perturbe pas le fonctionnement interne du b\u00e2timent principal de l'usine. Si vous souhaitez simplement ajouter une zone de stockage abrit\u00e9e, un bureau administratif ou plusieurs salles d'\u00e9quipement suppl\u00e9mentaires, et que vous n'avez pas besoin de rechercher une grande hauteur nette sans colonne, c'est le plan id\u00e9al.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Scheme_2_Headwall_Extension_-Longitudinal_Elongation\"><\/span>Sch\u00e9ma 2 : Extension de la paroi frontale - Allongement longitudinal<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Si votre flux de travail n\u00e9cessite un sol plat, ouvert et continu (comme dans le cas d'une extension de cha\u00eene de montage), la maison n'est certainement pas suffisante. Dans ce cas, l'extension du mur d'extr\u00e9mit\u00e9 est la seule solution. En d'autres termes, le b\u00e2timent est \u00e9tir\u00e9 lin\u00e9airement par l'ajout de nouvelles trav\u00e9es.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Seamless_Space\"><\/span>Espace sans couture<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>L'objectif de ce projet est de faire en sorte que la partie de l'extension et l'int\u00e9rieur de l'ancien b\u00e2timent se fondent en un seul et m\u00eame espace, comme s'il s'agissait d'une grande pi\u00e8ce continue. Mais c'est un peu une op\u00e9ration chirurgicale : il faut enlever les panneaux muraux d'extr\u00e9mit\u00e9 et les ossatures d'origine.<\/p>\n\n\n\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined\" id=\"maxw\" style=\"padding-bottom:100px;padding-top:100px;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in clomnsmal  clomnnone\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined  product-demo1 no-margin-bottom\" id=\"maxw\" style=\"height:320px;box-sizing: border-box;width: 100%;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in clomnsmal  clomnnone\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<div class=\"wp-block-themepark-block-themepark-wright content-super-p\" style=\"font-size:14px;line-height:25px;color:#333333;padding:20px 20px;\">\n<div class=\"wp-block-column\">\n<p class=\"has-medium-font-size\"><strong><strong>Atelier \u00e0 structure m\u00e9tallique<\/strong><\/strong><\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><br>Les ateliers \u00e0 structure m\u00e9tallique sont polyvalents. La port\u00e9e libre garantit un espace sans obstacle, tandis que les colonnes centrales et interm\u00e9diaires offrent des solutions \u00e9conomiques pour les grandes port\u00e9es.<\/p>\n\n\n\n<div style=\"height:16px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-themepark-block-btn themepark-i-btn-out\" style=\"text-align:undefined;\"><div class=\"themepark-i-btn-out_ins\" style=\"\"><div class=\"themepark-i-btn-out_in\"><div class=\"themepark-i-btn\" style=\"background-color:#183884;color:#ffffff;font-size:14px;border:solid 1px #318ec8;padding:6px 43px;\"><a href=\"https:\/\/www.wedospace.com\/fr\/warehouseworkshop\/\" rel=\"noopener noreferrer \">Obtenir un devis<\/a><a class=\"hovers\" data-title=\"Get Quote\" style=\"color:#318ec8;background-color:#ffffff;padding:6px 43px;\" href=\"https:\/\/www.wedospace.com\/fr\/warehouseworkshop\/\" rel=\"noopener noreferrer\" target=\"_self\"><\/a><\/div><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:5%\"><\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:50%\">\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined\" id=\"\" style=\"padding-top:110px;height:320px;box-sizing: border-box;width: 100%;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<h2 class=\"wp-block-heading has-text-align-center hover-only-title has-monte-white-color has-text-color has-link-color wp-elements-56c2aa5e1baf9761b998751b0f644cee\" style=\"font-size:30px\"><span class=\"ez-toc-section\" id=\"Steel_Structure_Workshop\"><\/span><strong><strong><a href=\"https:\/\/www.wedospace.com\/fr\/warehouseworkshop\/\">Atelier \u00e0 structure m\u00e9tallique<\/a><\/strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div><div class=\"layout_badh\"><div class=\"PcOnly themepark-block_layout_ba lazyload swiper-lazy\" style=\"background-repeat:no-repeat;background-size:cover;background-position:center;\" data-background=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/\u672a\u6807\u9898-6.png\"><\/div><div class=\"MovePnly themepark-block_layout_ba lazyload swiper-move-lazy\" style=\"background-repeat:no-repeat;background-size:cover;background-position:center;\" data-background=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/\u672a\u6807\u9898-6.png\"><\/div><\/div><\/section>\n<\/div>\n<\/div>\n<\/div>\n<\/div><div class=\"layout_badh\"><\/div><\/section>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined  product-demo1 no-margin-bottom\" id=\"maxw\" style=\"height:320px;box-sizing: border-box;width: 100%;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in clomnsmal  clomnnone\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<div class=\"wp-block-themepark-block-themepark-wright content-super-p\" style=\"font-size:14px;line-height:25px;color:#333333;padding:20px 20px;\">\n<div class=\"wp-block-column\">\n<p class=\"has-medium-font-size\"><strong> Pont\/Structure en acier Bridgeipsum<\/strong><\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><br>Les ponts \u00e0 structure en acier utilisent des rapports r\u00e9sistance\/poids \u00e9lev\u00e9s pour atteindre de longues port\u00e9es l\u00e0 o\u00f9 les appuis interm\u00e9diaires sont difficiles.<\/p>\n\n\n\n<div style=\"height:16px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-themepark-block-btn themepark-i-btn-out\" style=\"text-align:undefined;\"><div class=\"themepark-i-btn-out_ins\" style=\"\"><div class=\"themepark-i-btn-out_in\"><div class=\"themepark-i-btn\" style=\"background-color:#183884;color:#ffffff;font-size:14px;border:solid 1px #318ec8;padding:6px 43px;\"><a href=\"https:\/\/www.wedospace.com\/fr\/bridge-steel-bridge-steel-structure-bridge\/\" rel=\"noopener noreferrer \">Obtenir un devis<\/a><a class=\"hovers\" data-title=\"Get Quote\" style=\"color:#318ec8;background-color:#ffffff;padding:6px 43px;\" href=\"https:\/\/www.wedospace.com\/fr\/bridge-steel-bridge-steel-structure-bridge\/\" rel=\"noopener noreferrer\" target=\"_self\"><\/a><\/div><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:5%\"><\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:50%\">\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined\" id=\"\" style=\"padding-top:110px;height:320px;box-sizing: border-box;width: 100%;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<h2 class=\"wp-block-heading has-text-align-center hover-only-title has-monte-white-color has-text-color has-link-color wp-elements-6f1fee3dc6d3a0d7b10430e25d71164a\" style=\"font-size:30px\"><span class=\"ez-toc-section\" id=\"Bridgesteel\"><\/span><a href=\"https:\/\/www.wedospace.com\/fr\/bridge-steel-bridge-steel-structure-bridge\/\" data-type=\"link\" data-id=\"https:\/\/www.wedospace.com\/bridge-steel-bridge-steel-structure-bridge\/\">Pont\/acier<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div><div class=\"layout_badh\"><div class=\"PcOnly themepark-block_layout_ba lazyload swiper-lazy\" style=\"background-repeat:no-repeat;background-size:cover;background-position:center;\" data-background=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/\u672a\u6807\u9898-7.jpg\"><\/div><div class=\"MovePnly themepark-block_layout_ba lazyload swiper-move-lazy\" style=\"background-repeat:no-repeat;background-size:cover;background-position:center;\" data-background=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/\u672a\u6807\u9898-7.jpg\"><\/div><\/div><\/section>\n<\/div>\n<\/div>\n<\/div>\n<\/div><div class=\"layout_badh\"><\/div><\/section>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined  product-demo1 no-margin-bottom\" id=\"maxw\" style=\"height:320px;box-sizing: border-box;width: 100%;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in clomnsmal  clomnnone\" style=\"\">\n<div class=\"wp-block-column block_layout_in  no-margin-bottom\">\n<div class=\"wp-block-columns no-margin-bottom\">\n<div class=\"wp-block-column\">\n<div class=\"wp-block-themepark-block-themepark-wright content-super-p\" style=\"font-size:14px;line-height:25px;color:#333333;padding:20px 20px;\">\n<div class=\"wp-block-column\">\n<p class=\"has-medium-font-size\"><strong>B\u00e2timents \u00e0 structure m\u00e9tallique<\/strong><\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><br>Les b\u00e2timents \u00e0 structure m\u00e9tallique pr\u00e9sentent des conceptions polyvalentes pour r\u00e9pondre \u00e0 des besoins divers. La port\u00e9e libre offre un espace ouvert, tandis que les colonnes centrales et interm\u00e9diaires augmentent l'\u00e9conomie pour les grandes port\u00e9es. Le syst\u00e8me Multi Gable permet de r\u00e9pondre \u00e0 des largeurs complexes. <\/p>\n\n\n\n<div style=\"height:16px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-themepark-block-btn themepark-i-btn-out\" style=\"text-align:undefined;\"><div class=\"themepark-i-btn-out_ins\" style=\"\"><div class=\"themepark-i-btn-out_in\"><div class=\"themepark-i-btn\" style=\"background-color:#183884;color:#ffffff;font-size:14px;border:solid 1px #318ec8;padding:6px 43px;\"><a href=\"https:\/\/www.wedospace.com\/fr\/steel-structure-buildings-2\/\" rel=\"noopener noreferrer \">Obtenir un devis<\/a><a class=\"hovers\" data-title=\"Get Quote\" style=\"color:#318ec8;background-color:#ffffff;padding:6px 43px;\" href=\"https:\/\/www.wedospace.com\/fr\/steel-structure-buildings-2\/\" rel=\"noopener noreferrer\" target=\"_self\"><\/a><\/div><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:5%\"><\/div>\n\n\n\n<div class=\"wp-block-column\" style=\"flex-basis:50%\">\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined\" id=\"\" style=\"padding-top:110px;height:320px;box-sizing: border-box;width: 100%;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<h2 class=\"wp-block-heading has-text-align-center hover-only-title has-monte-white-color has-text-color has-link-color wp-elements-d73d4fab64b24bded77f1ce71afb29f3\" style=\"font-size:30px\"><span class=\"ez-toc-section\" id=\"Steel_Structure_Buildings\"><\/span><strong><a href=\"https:\/\/www.wedospace.com\/fr\/steel-structure-buildings-2\/\" data-type=\"link\" data-id=\"https:\/\/www.wedospace.com\/steel-structure-buildings-2\/\">B\u00e2timents \u00e0 structure m\u00e9tallique<\/a><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div><div class=\"layout_badh\"><div class=\"PcOnly themepark-block_layout_ba lazyload swiper-lazy\" style=\"background-repeat:no-repeat;background-size:cover;background-position:center;\" data-background=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2025\/12\/\u672a\u6807\u9898-9.png\"><\/div><div class=\"MovePnly themepark-block_layout_ba lazyload swiper-move-lazy\" style=\"background-repeat:no-repeat;background-size:cover;background-position:center;\" data-background=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2025\/12\/\u672a\u6807\u9898-9.png\"><\/div><\/div><\/section>\n<\/div>\n<\/div>\n<\/div>\n<\/div><div class=\"layout_badh\"><\/div><\/section>\n\n\n\n<style>\n.product-demo1{\n  border:1px solid #D4D4D4;\n}\n\n\/* \u533a\u5757\u6574\u4f53 hover \u80cc\u666f + \u6587\u5b57\u53d8\u767d *\/\n.product-demo1 {\n    transition: background-color 0.45s ease;\n}\n\n.product-demo1:hover {\n    background-color: var(--wp--preset--color--themecolor-1);\n}\n\n\/* \u5de6\u4fa7\u6240\u6709\u6587\u5b57 hover \u540e\u5f3a\u5236\u767d\u8272 *\/\n.product-demo1:hover .content-super-p,\n.product-demo1:hover .content-super-p p,\n.product-demo1:hover .content-super-p strong,\n.product-demo1:hover .content-super-p .has-medium-font-size {\n    color: #ffffff !important;\n}\n\n\/* \u6309\u94ae\uff1a\u521d\u59cb\u4e3b\u9898\u8272\u5e95+\u767d\u5b57 \u2192 hover \u767d\u5e95+\u4e3b\u9898\u8272\u5b57 *\/\n.product-demo1 .themepark-i-btn {\n    background-color: var(--wp--preset--color--themecolor-1) !important;\n    color: #ffffff !important;\n    border-color: var(--wp--preset--color--themecolor-1) !important;\n    transition: all 0.4s ease;\n}\n\n.product-demo1:hover .themepark-i-btn {\n    background-color: #ffffff !important;\n    color: var(--wp--preset--color--themecolor-1) !important;\n    border-color: var(--wp--preset--color--themecolor-1) !important;\n}\n\n\/* \u2500\u2500\u2500 \u53f3\u4fa7\u56fe\u7247\u533a\u57df\uff1a\u906e\u7f69 + hover-only-title \u2500\u2500\u2500 *\/\n\n.PcOnly.themepark-block_layout_ba {\n    position: relative; 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Il faut savoir que le cadre rigide du mur d'extr\u00e9mit\u00e9 d'origine ne supporte g\u00e9n\u00e9ralement que la moiti\u00e9 de la charge de l'ouverture standard (parce qu'il se trouve sur le c\u00f4t\u00e9 le plus \u00e9lev\u00e9) lorsqu'il a \u00e9t\u00e9 con\u00e7u \u00e0 l'origine. Mais lorsque vous agrandissez le b\u00e2timent, la \"bordure\" d'origine devient instantan\u00e9ment le \"cadre rigide principal\" au milieu, qui doit supporter la totalit\u00e9 de la charge. Par cons\u00e9quent, si l'on agrandit directement le cadre d'extr\u00e9mit\u00e9 d'origine sans le renforcer au pr\u00e9alable, le risque de d\u00e9faillance structurelle est extr\u00eamement \u00e9lev\u00e9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Add_A_New_Bay\"><\/span>Ajouter une nouvelle baie<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Une fois que le cadre d'extr\u00e9mit\u00e9 d'origine est renforc\u00e9 et que le mur est enlev\u00e9, le nouveau cadre rigide \u00e0 grande port\u00e9e peut \u00eatre reli\u00e9 par des boulons afin de conserver la forme g\u00e9om\u00e9trique d'origine et de s'\u00e9tendre \u00e0 la longueur souhait\u00e9e.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Step_Foundation_And_Uneven_Settlement\"><\/span>\u00c9tape cl\u00e9 : Fondation et tassement irr\u00e9gulier<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Que vous optiez pour une maison drap\u00e9e bon march\u00e9 ou pour une extension de mur d'extr\u00e9mit\u00e9 complexe, la strat\u00e9gie en mati\u00e8re de fondations fera toujours partie de la \"vie et de la mort\" dans le domaine de la construction.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"452\" src=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-81-1024x452.jpg\" alt=\"Considerations for adding extensions to steel structures\" class=\"wp-image-12833\" srcset=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-81-1024x452.jpg 1024w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-81-300x132.jpg 300w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-81-768x339.jpg 768w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-81-18x8.jpg 18w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-81.jpg 1122w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Independent_Pouring\"><\/span>Coul\u00e9e ind\u00e9pendante<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>N'essayez pas de vous \u00e9pargner des ennuis, coulez la nouvelle fondation directement sur le bord de l'ancienne fondation, ne vous attendez pas \u00e0 ce qu'elles soient rigidement reli\u00e9es entre elles. Le nouveau b\u00e9ton doit \u00eatre coul\u00e9 ind\u00e9pendamment.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Understanding_Uneven_Settlement\"><\/span>Comprendre le r\u00e8glement in\u00e9gal<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Il s'agit ici de la notion de \"tassement irr\u00e9gulier\". L'ancienne maison est l\u00e0 depuis de nombreuses ann\u00e9es et le sol souterrain est depuis longtemps compact\u00e9 et enfonc\u00e9. Cependant, la partie nouvellement construite est plus lourde et le b\u00e9ton qui la suit est neuf. Sa vitesse de tassement est nettement diff\u00e9rente de celle de l'ancienne maison.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"To_Prevent_Cracking\"><\/span>Pour \u00e9viter les fissures<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Si l'ancienne et la nouvelle fondation sont li\u00e9es, ce tassement in\u00e9gal produira un point de contrainte \u00e9norme, qui entra\u00eenera directement la fissuration du sol en b\u00e9ton et m\u00eame la d\u00e9formation de la structure m\u00e9tallique sup\u00e9rieure. Il faut absolument cr\u00e9er un joint de s\u00e9paration (g\u00e9n\u00e9ralement appel\u00e9 joint de dilatation ou joint d'isolation), de sorte que la partie nouvellement ajout\u00e9e puisse se tasser \"librement\", ce qui est la bonne fa\u00e7on de pr\u00e9server l'int\u00e9grit\u00e9 de l'ensemble de la structure m\u00e9tallique du b\u00e2timent.<\/p>\n\n\n\n<p><strong>Auteur : Michael Thorne<\/strong><\/p>\n\n\n\n<p>Bonjour, je suis consultant principal en structures, sp\u00e9cialis\u00e9 dans les b\u00e2timents m\u00e9talliques pr\u00e9fabriqu\u00e9s. Avec plus de 16 ans d'exp\u00e9rience dans l'industrie, j'aide les propri\u00e9taires \u00e0 maximiser leurs structures existantes. Mon expertise consiste \u00e0 calculer les charges structurales pour les agrandissements et \u00e0 concevoir des syst\u00e8mes de fondation qui emp\u00eachent le tassement diff\u00e9rentiel, ce qui garantit que l'ajout de votre b\u00e2timent en acier est aussi durable que 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