{"id":35786,"date":"2024-03-08T12:51:50","date_gmt":"2024-03-08T11:51:50","guid":{"rendered":"https:\/\/desarrollo.ypsossafety.com\/exigences-pour-lessai-de-la-norme-une-en-14122-3\/"},"modified":"2026-10-30T00:04:39","modified_gmt":"2026-10-29T23:04:39","slug":"exigences-pour-lessai-de-la-norme-une-en-14122-3","status":"publish","type":"post","link":"https:\/\/desarrollo.ypsossafety.com\/fr\/exigences-pour-lessai-de-la-norme-une-en-14122-3\/","title":{"rendered":"Exigences pour l&rsquo;essai de la norme UNE EN 14122-3"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Dans la continuit\u00e9 de ce que nous avons abord\u00e9 sur la <a href=\"https:\/\/ypsossafety.com\/escalera-con-plataforma-une-en-iso-14122-3\/\" target=\"_blank\" rel=\"noreferrer noopener\"> norme UNE EN 14122-3<\/a> dans des articles pr\u00e9c\u00e9dents, nous approfondirons aujourd&rsquo;hui les m\u00e9thodes propos\u00e9es par la norme pour v\u00e9rifier le respect des exigences de s\u00e9curit\u00e9 impos\u00e9es aux escaliers et aux marches.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>Obligations de la norme UNE EN 14122-3<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">La norme permet de v\u00e9rifier les exigences \u00e9voqu\u00e9es dans l&rsquo;article pr\u00e9c\u00e9dent, relatives \u00e0 la construction et aux mat\u00e9riaux \u00e0 utiliser dans la fabrication des escaliers, ainsi qu&rsquo;\u00e0 leur structure et \u00e0 leurs marches, au moyen d&rsquo;un essai de mesure de la fl\u00e8che sur les marches individuelles.<\/p>\n\n<p class=\"wp-block-paragraph\">La<a href=\"https:\/\/ypsossafety.com\/escalera-con-plataforma-une-en-iso-14122-3\/\" target=\"_blank\" rel=\"noreferrer noopener\"> norme UNE EN ISO 14122-3 <\/a>exige, pour r\u00e9aliser l&rsquo;essai, que celui-ci soit effectu\u00e9 sur la partie de l&rsquo;escalier comportant au minimum deux marches.<\/p>\n\n<p class=\"wp-block-paragraph\">En outre, <strong>il est n\u00e9cessaire de fixer l&rsquo;\u00e9chantillon au sol et au mur<\/strong> de mani\u00e8re \u00e0 ce que la structure de l&rsquo;\u00e9chantillon ne bouge pas pendant l&rsquo;essai<em> (image 1)<\/em>.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"693\" height=\"416\" src=\"https:\/\/ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-141223-1.png\" alt=\"sch&#xE9;ma de l'essai d'un escalier 14122-3\" class=\"wp-image-12492\" style=\"width:476px;height:auto\" srcset=\"https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-141223-1.png 693w, https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-141223-1-300x180.png 300w, https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-141223-1-600x360.png 600w, https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-141223-1-64x38.png 64w\" sizes=\"(max-width: 693px) 100vw, 693px\" \/><figcaption class=\"wp-element-caption\"><em>Image 1. \u00c9chantillon pour essai<\/em><\/figcaption><\/figure>\n<\/div>\n<p class=\"wp-block-paragraph\">Selon la largeur libre, w, entre limons et structure support, <strong>l&rsquo;essai est r\u00e9alis\u00e9 avec une charge d&rsquo;essai<\/strong> <em>(image 2)<\/em> <strong>ou deux charges d&rsquo;essai<\/strong> <em>(image 3).<\/em><\/p>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"729\" height=\"445\" src=\"https:\/\/ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-escalera-141223.png\" alt=\"sch&#xE9;ma de l'essai d'un escalier 14122-3\" class=\"wp-image-12493\" srcset=\"https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-escalera-141223.png 729w, https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-escalera-141223-300x183.png 300w, https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-escalera-141223-600x366.png 600w, https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-escalera-141223-64x39.png 64w\" sizes=\"(max-width: 729px) 100vw, 729px\" \/><figcaption class=\"wp-element-caption\"><em>Image 2. \u00c9chantillon pour essai pour w &lt; 1200 mm<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"792\" height=\"482\" src=\"https:\/\/ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-escalones-141223.png\" alt=\"sch&#xE9;ma de l'essai d'un escalier 14122-3\" class=\"wp-image-12495\" srcset=\"https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-escalones-141223.png 792w, https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-escalones-141223-300x183.png 300w, https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-escalones-141223-768x467.png 768w, https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-escalones-141223-600x365.png 600w, https:\/\/desarrollo.ypsossafety.com\/wp-content\/uploads\/2024\/03\/ensayo-escalones-141223-64x39.png 64w\" sizes=\"(max-width: 792px) 100vw, 792px\" \/><figcaption class=\"wp-element-caption\"><em>Image 3. \u00c9chantillon pour essai pour w &gt; 1200 mm<\/em><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n<p class=\"wp-block-paragraph\">Les charges doivent \u00eatre appliqu\u00e9es sur un bloc rigide dont les dimensions maximales sont de 100 mm x 100 mm et sans ar\u00eates vives.<\/p>\n\n<p class=\"wp-block-paragraph\">La charge d&rsquo;essai est repr\u00e9sent\u00e9e par la formule suivante\u00a0: F<sub>s<\/sub> =  \u00b5 x F<sub>d<\/sub><\/p>\n\n<p class=\"wp-block-paragraph\">O\u00f9 la charge minimale de calcul, F<sub>d<\/sub>, est de 1,5 kN et le facteur mat\u00e9riau \u00b5 = 1,75 pour l&rsquo;acier et l&rsquo;aluminium.<\/p>\n\n<p class=\"wp-block-paragraph\">Pour \u00e9viter les erreurs de mesure caus\u00e9es par les effets de r\u00e9glage, la partie de l&rsquo;escalier \u00e0 tester devrait d&rsquo;abord \u00eatre charg\u00e9e avec une pr\u00e9charge, F<sub>p<\/sub> = 0,25 x F<sub>s<\/sub><\/p>\n\n<h2 class=\"wp-block-heading\"><strong>Proc\u00e9dure d&rsquo;essai de la norme UNE EN 14122-3<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">La proc\u00e9dure d&rsquo;essai consiste \u00e0 placer le bloc rigide de 100 mm x 100 mm \u00e0 600 mm de distance au(x) point(s) le(s) plus d\u00e9favorable(s) de la marche, conform\u00e9ment aux images 1, 2 et 3.<\/p>\n\n<p class=\"wp-block-paragraph\">Ensuite, la pr\u00e9charge, F<sub>p.<\/sub>, est appliqu\u00e9e sur le ou les blocs rigides et maintenue pendant au moins une minute\u00a0; apr\u00e8s retrait de la charge, le comparateur de d\u00e9placement doit \u00eatre remis \u00e0 z\u00e9ro.<\/p>\n\n<p class=\"wp-block-paragraph\">Les charges d&rsquo;essai, F<sub>s.<\/sub>, doivent alors \u00eatre appliqu\u00e9es lentement et maintenues dans cette position pendant au moins une minute. Apr\u00e8s retrait de la charge, la fl\u00e8che permanente ne doit pas d\u00e9passer 0,3 % de la port\u00e9e ou 6 mm.<\/p>\n\n<p class=\"wp-block-paragraph\">En ce qui concerne l&rsquo;essai des marches, la norme UNE EN ISO 14122 nous renvoie \u00e0 l&rsquo;utilisation d&rsquo;une autre norme tr\u00e8s connue\u00a0: la norme EN 131-2.<em> <a href=\"https:\/\/ypsossafety.com\/escalera-vertical\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u00c9chelles<\/a>. Partie 2\u00a0: Exigences, essais et marquage<\/em>.<\/p>\n\n<p class=\"wp-block-paragraph\">Nous esp\u00e9rons que cet article a permis d&rsquo;expliquer comment est r\u00e9alis\u00e9 l&rsquo;essai de v\u00e9rification du respect des exigences applicables aux escaliers et aux marches, et qu&rsquo;il vous sera utile \u00e0 l&rsquo;avenir.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dans la continuit\u00e9 de ce que nous avons abord\u00e9 sur la norme UNE EN 14122-3 dans des articles pr\u00e9c\u00e9dents, nous approfondirons aujourd&rsquo;hui les m\u00e9thodes propos\u00e9es par la norme pour v\u00e9rifier le respect des exigences de s\u00e9curit\u00e9 impos\u00e9es aux escaliers et aux marches. Obligations de la norme UNE EN 14122-3 La norme permet de v\u00e9rifier les [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":35789,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_breadcrumb_parent_id":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[132,133],"tags":[],"class_list":["post-35786","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-echelles-de-securite","category-prevention-des-risques-professionnels","grve-entry-item","grve-blog-item"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Exigences pour 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