{"id":12357,"date":"2026-01-08T08:45:00","date_gmt":"2026-01-08T00:45:00","guid":{"rendered":"https:\/\/www.wedospace.com\/?p=12357"},"modified":"2026-03-05T17:16:30","modified_gmt":"2026-03-05T09:16:30","slug":"does-structural-steel-need-to-be-fireproofed","status":"publish","type":"post","link":"https:\/\/www.wedospace.com\/fr\/does-structural-steel-need-to-be-fireproofed\/","title":{"rendered":"L'acier de construction doit-il \u00eatre ignifug\u00e9 ?"},"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>Oui, l'acier de construction n\u00e9cessite g\u00e9n\u00e9ralement une protection contre l'incendie pour \u00e9viter l'effondrement de la structure, mais les r\u00e9glementations sp\u00e9cifiques d\u00e9pendent enti\u00e8rement du type de construction d\u00e9fini dans le code international de la construction (IBC).<\/p>\n\n\n\n<p>L'acier est en effet un mat\u00e9riau incombustible, mais cela ne signifie pas qu'il \"ne craint pas le feu\". Les donn\u00e9es montrent que l'acier perd environ 50% de sa capacit\u00e9 (c'est-\u00e0-dire de sa limite d'\u00e9lasticit\u00e9) \u00e0 1 100 \u00b0F (environ 593 \u00b0C). Malheureusement, dans un incendie de b\u00e2timent classique, il ne faut que quelques minutes pour atteindre cette temp\u00e9rature, et non des heures.<\/p>\n\n\n\n<p>Par cons\u00e9quent, pour les projets de construction de type I, de type II-A et de type III-A, les \u00e9l\u00e9ments en acier (colonnes, poutres et fermes) doivent \u00eatre ignifug\u00e9s pour satisfaire \u00e0 des limites de r\u00e9sistance au feu sp\u00e9cifiques (g\u00e9n\u00e9ralement 1, 2 ou 3 heures).<\/p>\n\n\n\n<p>Si votre projet est class\u00e9 dans le type II-B (structure incombustible non prot\u00e9g\u00e9e) ou dans le type V-B, ou si vous pouvez satisfaire \u00e0 des conditions sp\u00e9cifiques de r\u00e9duction du syst\u00e8me de gicleurs et d'espacement des feux, il se peut que l'acier de construction n'ait pas besoin d'une protection active contre l'incendie. En fin de compte, tout d\u00e9pend de l'intersection de la nature de l'utilisation du b\u00e2timent (groupe d'occupation), des restrictions de hauteur\/surface et du type de construction.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"485\" src=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-22-1024x485.jpg\" alt=\"Schematic diagram of a structural steel building\" class=\"wp-image-12358\" srcset=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-22-1024x485.jpg 1024w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-22-300x142.jpg 300w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-22-768x364.jpg 768w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-22-18x9.jpg 18w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-22.jpg 1167w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_Physical_Properties_Of_Steel_In_Fire\"><\/span>Les propri\u00e9t\u00e9s physiques de l'acier au feu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Pour comprendre pourquoi l'acier de construction doit \u00eatre prot\u00e9g\u00e9 contre le feu, il faut d'abord corriger un malentendu conceptuel : faire la distinction entre \"incombustible\" et \"r\u00e9sistant au feu\".<\/p>\n\n\n\n<p>L'acier lui-m\u00eame ne br\u00fble pas. Cependant, ses propri\u00e9t\u00e9s m\u00e9caniques se d\u00e9gradent fortement \u00e0 haute temp\u00e9rature. Pour les ing\u00e9nieurs structurels, 593\u00b0C est un seuil de vie ou de mort. Dans un incendie de b\u00e2timent typique, la temp\u00e9rature ambiante grimpe si vite qu'une fois que l'acier atteint cette temp\u00e9rature, sa limite d'\u00e9lasticit\u00e9 et sa rigidit\u00e9 sont instantan\u00e9ment r\u00e9duites de moiti\u00e9.<\/p>\n\n\n\n<p>\u00c0 ce stade, le risque d'effondrement catastrophique de la structure augmente consid\u00e9rablement. Les mesures de protection contre l'incendie - qu'il s'agisse de la pulv\u00e9risation d'un rev\u00eatement ignifuge ou d'un enduit - ne visent pas essentiellement \u00e0 pr\u00e9server l'acier lui-m\u00eame, mais \u00e0 retarder le moment o\u00f9 l'acier atteint cette temp\u00e9rature critique, afin de gagner du temps pour l'\u00e9vacuation et l'entr\u00e9e des pompiers.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"448\" src=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-23-1024x448.jpg\" alt=\"The physical properties of structural steel buildings in fire.\" class=\"wp-image-12359\" srcset=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-23-1024x448.jpg 1024w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-23-300x131.jpg 300w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-23-768x336.jpg 768w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-23-18x8.jpg 18w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-23.jpg 1169w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Type_Of_Construction_Required_For_Fire_Protection_In_The_IBC_Code\"><\/span>Type de construction requis pour la protection contre l'incendie dans le code IBC<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>L'IBC divise les b\u00e2timents en 5 grandes cat\u00e9gories, chacune d'entre elles sp\u00e9cifiant un degr\u00e9 de r\u00e9sistance au feu diff\u00e9rent. Les cat\u00e9gories suivantes sont les plus touch\u00e9es par la pr\u00e9vention des incendies sur les \u00e9l\u00e9ments en acier :<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Type_I_Construction\"><\/span>Construction de type I :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Il s'agit g\u00e9n\u00e9ralement d'immeubles de grande hauteur ou d'immeubles situ\u00e9s dans des endroits \u00e0 haut risque. Ce type de b\u00e2timent pr\u00e9sente les exigences les plus strictes en mati\u00e8re de protection contre l'incendie. Dans ce type de projet, les colonnes, les poutres et les fermes en acier doivent \u00eatre \u00e9troitement prot\u00e9g\u00e9es, et des limites de r\u00e9sistance au feu de 2 \u00e0 3 heures sont souvent exig\u00e9es. En effet, plus le b\u00e2timent est haut, plus il met de temps \u00e0 s'effondrer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Type_II-A_Protected_Non-Combustibleprotected_Incombustible_Construction\"><\/span>Type II-A (construction incombustible prot\u00e9g\u00e9e\/prot\u00e9g\u00e9e) :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Les mat\u00e9riaux de ce type de construction sont incombustibles (acier et b\u00e9ton). Remarquez le \"A\" ici - dans la langue vernaculaire, le \"A\" signifie g\u00e9n\u00e9ralement \"Prot\u00e9g\u00e9 (protected)\". Cela signifie que la structure principale doit atteindre une limite de r\u00e9sistance au feu de 1 heure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Type_III-A\"><\/span>Type III-A :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Les parois ext\u00e9rieures de ces structures sont g\u00e9n\u00e9ralement incombustibles, mais les parois internes peuvent \u00eatre constitu\u00e9es de n'importe quel mat\u00e9riau autoris\u00e9 par la sp\u00e9cification. Ici encore, le \"A\" met l'accent sur le terme \"prot\u00e9g\u00e9\", ce qui signifie que la structure interne en acier doit \u00eatre ignifug\u00e9e pour r\u00e9pondre \u00e0 l'exigence correspondante en termes d'heures.<\/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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Lorsque nous contr\u00f4lons les co\u00fbts, nous utilisons souvent des sc\u00e9narios sp\u00e9cifiques de l'IBC pour garder l'acier \"sans protection\" :<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Type_II-B_Unprotected_Non-Combustiblenon-protected_Non-Combustible_Structure\"><\/span>Type II-B (structure non combustible non prot\u00e9g\u00e9e\/structure non combustible non prot\u00e9g\u00e9e) :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Si le projet peut \u00eatre class\u00e9 dans le type II-B, ce sera beaucoup plus facile. Le code reconna\u00eet que le risque de ce type de b\u00e2timent (en fonction de son utilisation et de son \u00e9chelle) est suffisamment faible pour que la charpente m\u00e9tallique ne n\u00e9cessite pas d'indice de r\u00e9sistance au feu. Ce type de b\u00e2timent est tr\u00e8s courant dans les b\u00e2timents commerciaux de faible hauteur ou les entrep\u00f4ts, o\u00f9 les poutres en acier sont directement expos\u00e9es.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Type_V-B\"><\/span>Type V-B :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Il s'agit du type le moins restrictif (g\u00e9n\u00e9ralement les constructions en bois l\u00e9ger, mais aussi les constructions en acier). \"B\" signifie \"pas de protection\", c'est-\u00e0-dire que l'\u00e9l\u00e9ment structurel n'a besoin d'aucun degr\u00e9 de r\u00e9sistance au feu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Fire_Separation_Distances\"><\/span>Distances de s\u00e9paration en cas d'incendie :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Si votre b\u00e2timent est suffisamment \u00e9loign\u00e9 des autres b\u00e2timents ou des limites de propri\u00e9t\u00e9, le risque de chaleur rayonnante sera r\u00e9duit. Dans ce cas, l'IBC permet de r\u00e9duire les exigences de classement au feu du mur porteur ext\u00e9rieur en fonction de l'espacement au feu.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"495\" src=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-24-1024x495.jpg\" alt=\"Fire protection systems for structural steel buildings\" class=\"wp-image-12360\" srcset=\"https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-24-1024x495.jpg 1024w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-24-300x145.jpg 300w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-24-768x372.jpg 768w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-24-18x9.jpg 18w, https:\/\/www.wedospace.com\/wp-content\/uploads\/2026\/01\/image-24.jpg 1145w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Automatic_Sprinkler_System_%E2%80%9CDiscount%E2%80%9D_Game\"><\/span>Jeu \"Discount\" sur les syst\u00e8mes d'arrosage automatique<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Le syst\u00e8me d'extinction automatique est une variable cl\u00e9 lorsqu'il s'agit de d\u00e9cider si une structure en acier a besoin d'une protection contre l'incendie.<\/p>\n\n\n\n<p>L'IBC autorise les \"compromis\" apr\u00e8s l'installation d'un syst\u00e8me d'extinction automatique enti\u00e8rement conforme \u00e0 la norme NFPA 13. Ceci est tr\u00e8s courant dans la conception actuelle, et l'installation d'un syst\u00e8me de gicleurs permet souvent \u00e0 l'\u00e9quipe de conception de r\u00e9duire le degr\u00e9 de r\u00e9sistance au feu requis pour l'acier de construction.<\/p>\n\n\n\n<p>Par exemple, un b\u00e2timent qui, \u00e0 l'origine, devait avoir un degr\u00e9 de r\u00e9sistance au feu d'une heure (type II-A) selon le code, peut \u00eatre reclass\u00e9 ou exempt\u00e9 de la construction selon le type II-B (aucune protection) gr\u00e2ce \u00e0 un puissant syst\u00e8me de sprinklers. La logique est simple : un syst\u00e8me actif de suppression des incendies (sprinkler) r\u00e9duit la probabilit\u00e9 que l'acier atteigne le point de rupture fatal de 1 100 \u00b0F.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Nature_Of_Use_Height_And_Area\"><\/span>Nature de l'utilisation, hauteur et superficie<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Enfin, pour r\u00e9sumer, la r\u00e9ponse \u00e0 la question de savoir si l'acier de construction a besoin d'une protection contre l'incendie n'est pas un oui ou un non, mais un processus de calcul bas\u00e9 sur trois facteurs dans la sp\u00e9cification :<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Nature_Of_Use\"><\/span>Nature de l'utilisation :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u00c0 quoi sert la maison ? Une installation \u00e0 haut risque pour le stockage de mat\u00e9riaux inflammables ou un auditorium bond\u00e9 doivent \u00eatre soumis \u00e0 des r\u00e8gles de pr\u00e9vention des incendies beaucoup plus strictes qu'un petit entrep\u00f4t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Height_And_Area\"><\/span>Hauteur et surface :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Plus le b\u00e2timent est grand et haut, plus il est difficile d'\u00e9vacuer et d'\u00e9teindre les incendies. Par cons\u00e9quent, \u00e0 mesure que le volume augmente, l'IBC tend \u00e0 imposer des structures de type I ou II-A, ce qui d\u00e9clenche l'obligation de protection contre l'incendie.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Construction_Type\"><\/span>Type de construction :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Il s'agit d'une analyse compl\u00e8te des deux points susmentionn\u00e9s apr\u00e8s le classement final.<\/p>\n\n\n\n<p>En r\u00e9sum\u00e9, lorsque la combinaison de la nature, de la hauteur et de la zone vous pousse vers un type de construction sp\u00e9cifique (tel que le type I, II-A ou III-A), vous devez prot\u00e9ger la structure en acier contre le feu afin d'\u00e9viter qu'elle ne perde sa r\u00e9sistance en cas d'incendie.<\/p>\n\n\n\n<p>Auteur:Michael Ross<\/p>\n\n\n\n<p>Je suis ing\u00e9nieur structurel principal, sp\u00e9cialis\u00e9 dans les strat\u00e9gies de protection contre l'incendie. Avec plus de 14 ans d'exp\u00e9rience dans la construction commerciale, j'aide les architectes et les promoteurs \u00e0 naviguer dans les r\u00e9glementations complexes de l'IBC afin d'\u00e9quilibrer la s\u00e9curit\u00e9 structurelle avec des solutions d'ignifugation rentables.<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":12358,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"themepark_post_bcolor":"#ffffff","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":false,"themepark_post_main_b":"#ffffff","themepark_post_main_p":100,"themepark_paddingblock":true,"footnotes":""},"categories":[28],"tags":[],"class_list":["post-12357","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"metadata":{"_edit_lock":["1772702339:1"],"rank_math_seo_score":["22"],"rank_math_primary_category":["28"],"_thumbnail_id":["12358"],"themepark_post_bcolor":["#ffffff"],"themepark_post_width":["1022px"],"themepark_post_img":[""],"themepark_post_img_po":["left"],"themepark_post_img_re":[""],"themepark_post_img_cover":[""],"themepark_post_img_fixed":[""],"themepark_post_hide_title":[""],"themepark_post_main_b":["#ffffff"],"themepark_post_main_p":["100"],"themepark_paddingblock":["1"],"footnotes":[""],"_edit_last":["1"],"_ez-toc-disabled":[""],"_ez-toc-insert":[""],"_ez-toc-header-label":[""],"_ez-toc-device-target":[""],"_ez-toc-alignment":["none"],"_ez-toc-heading-levels":["a:0:{}"],"_ez-toc-alttext":[""],"_ez-toc-visibility_hide_by_default":[""],"_ez-toc-hide_counter":[""],"_ez-toc-exclude":[""],"_ez-toc-word_count_limit":["0"],"_ez-toc-position-specific":[""],"themepark_seo_title":["Does Structural Steel Need To Be Fireproofed"],"themepark_seo_description":["Yes. 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