{"id":3368,"date":"2026-09-07T15:02:55","date_gmt":"2026-09-07T15:02:55","guid":{"rendered":"https:\/\/ultrasuonindt.it\/len-1090-et-les-assemblages-structurels\/"},"modified":"2026-09-12T20:37:40","modified_gmt":"2026-09-12T20:37:40","slug":"len-1090-et-les-assemblages-structurels","status":"publish","type":"page","link":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/normes-pour-le-serrage-boulonne\/len-1090-et-les-assemblages-structurels\/","title":{"rendered":"L&rsquo;EN 1090 et les assemblages structurels"},"content":{"rendered":"\n<div class=\"wp-block-columns are-vertically-aligned-top is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:36%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"1200\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-web-1200x1200-1.webp?resize=1200%2C1200&#038;ssl=1\" alt=\"Mesure sur des &#xE9;l&#xE9;ments de charpente m&#xE9;tallique\" class=\"wp-image-1014\" style=\"border-color:#000000;border-width:1px;border-radius:15px\" srcset=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-web-1200x1200-1.webp?w=1200&amp;ssl=1 1200w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-web-1200x1200-1.webp?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-web-1200x1200-1.webp?resize=1024%2C1024&amp;ssl=1 1024w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-web-1200x1200-1.webp?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-web-1200x1200-1.webp?resize=768%2C768&amp;ssl=1 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:4%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<div class=\"wp-block-group has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-top-right-radius:6px;border-bottom-right-radius:6px;border-left-color:#225f78;border-left-width:6px;background-color:#ebf1f4;padding-top:24px;padding-right:28px;padding-bottom:24px;padding-left:28px\">\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#225f78;font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.408), 18px);font-style:italic;font-weight:400;line-height:1.6\">Dans les structures en acier, la pr\u00e9contrainte des boulons n&rsquo;est pas un d\u00e9tail de montage : c&rsquo;est une exigence d&rsquo;ex\u00e9cution, et la norme indique par quelles m\u00e9thodes on peut l&rsquo;obtenir.<\/p>\n<\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\" style=\"list-style:none;padding-left:0px;line-height:1.6\">\n<li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> EN 1090-2:2018 (+A1:2024), exigences techniques pour les structures en acier<\/li>\n\n\n\n<li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> La section 8 traite des assemblages boulonn\u00e9s<\/li>\n\n\n\n<li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> Quatre m\u00e9thodes de pr\u00e9contrainte confirm\u00e9es par les sources consult\u00e9es<\/li>\n\n\n\n<li style=\"list-style:none\"><strong style=\"color:#225f78\">\u2713<\/strong> Aucune m\u00e9thode par allongement cit\u00e9e par les sources que nous avons v\u00e9rifi\u00e9es<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n<p class=\"wp-block-paragraph\">L&rsquo;EN 1090-2 est la norme d&rsquo;ex\u00e9cution des structures m\u00e9talliques. Le titre complet de la partie 2 est <em>\u201cExecution of steel structures and aluminium structures \u2014 Part 2: Technical requirements for steel structures\u201d<\/em>, c&rsquo;est-\u00e0-dire \u00ab Ex\u00e9cution des structures en acier et des structures en aluminium \u2014 Partie 2 : Exigences techniques pour les structures en acier \u00bb. L&rsquo;\u00e9dition de r\u00e9f\u00e9rence est celle de 2018, compl\u00e9t\u00e9e par l&rsquo;amendement A1 de 2024.  <\/p>\n\n<p class=\"wp-block-paragraph\">Si votre int\u00e9r\u00eat porte sur les assemblages boulonn\u00e9s, la section \u00e0 lire est la section 8, consacr\u00e9e aux assemblages boulonn\u00e9s. C&rsquo;est l\u00e0 que la norme aborde la question de la pr\u00e9contrainte : cet effort de traction que l&rsquo;on veut introduire dans la tige du boulon au moment du serrage, et qui d\u00e9termine le comportement de l&rsquo;assemblage sous charge de service, en particulier pour les assemblages au cisaillement r\u00e9sistant au glissement. <\/p>\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-cover is-light popmake-4066 popmake-739\" style=\"border-width:1px;min-height:250px;aspect-ratio:unset;\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"250\" class=\"wp-block-cover__image-background wp-image-727 size-full\" alt=\"\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=1200%2C250&#038;ssl=1\" data-object-fit=\"cover\" srcset=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?w=1200&amp;ssl=1 1200w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=300%2C63&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=1024%2C213&amp;ssl=1 1024w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/banner_technical_support_choose_products.png?resize=768%2C160&amp;ssl=1 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-30 has-background-dim\" style=\"background-color:#d3d6dc\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-15701bb7 wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-right has-ti-fg-color is-style-default has-luminous-vivid-amber-color has-text-color has-link-color wp-elements-1 wp-block-paragraph\" style=\"font-size:clamp(21.536px, 1.346rem + ((1vw - 3.2px) * 1.374), 35px);\"><strong>Besoin d&rsquo;aide pour choisir le produit adapt\u00e9 ?<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-right is-layout-flex wp-container-core-buttons-is-layout-b507c051 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button popmake-4066 popmake-739\"><a class=\"wp-block-button__link has-ti-accent-color has-cyan-bluish-gray-background-color has-text-color has-background has-link-color wp-element-button\">Contactez-nous<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">La distinction op\u00e9rationnelle qui compte est celle entre boulons simplement serr\u00e9s et boulons pr\u00e9contraints. Dans le second cas, la valeur de la pr\u00e9contrainte est une donn\u00e9e de calcul, et le monteur doit pouvoir d\u00e9montrer l&rsquo;avoir atteinte : d&rsquo;o\u00f9 le besoin de m\u00e9thodes d\u00e9finies et v\u00e9rifiables, que la norme \u00e9num\u00e8re. <\/p>\n\n<h2 class=\"wp-block-heading\">Les quatre m\u00e9thodes de pr\u00e9contrainte<\/h2>\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th style=\"background-color:#225f78;color:#ffffff;padding:10px\">M\u00e9thode<\/th><th style=\"background-color:#225f78;color:#ffffff;padding:10px\">Principe<\/th><\/tr><\/thead><tbody><tr><td>M\u00e9thode du couple<\/td><td>La pr\u00e9contrainte est obtenue en appliquant un couple de serrage d\u00e9fini<\/td><\/tr><tr><td>M\u00e9thode combin\u00e9e<\/td><td>Couple initial suivi d&rsquo;une rotation suppl\u00e9mentaire contr\u00f4l\u00e9e<\/td><\/tr><tr><td>M\u00e9thode HRC<\/td><td>Emploi de boulons \u00e0 contr\u00f4le de serrage dont l&rsquo;extr\u00e9mit\u00e9 se cisaille<\/td><\/tr><tr><td>M\u00e9thode \u00e0 indicateur direct de tension (DTI)<\/td><td>Rondelles indicatrices qui signalent l&rsquo;atteinte de la pr\u00e9contrainte<\/td><\/tr><tr><td>R\u00e9f\u00e9rence normative<\/td><td>EN 1090-2:2018 (+A1:2024), section 8, assemblages boulonn\u00e9s<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\">Ce que disent et ne disent pas les sources consult\u00e9es<\/h2>\n\n<div class=\"wp-block-columns are-vertically-aligned-top is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:36%\">\n<figure class=\"wp-block-image size-large has-custom-border\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"700\" src=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?resize=700%2C700&#038;ssl=1\" alt=\"Instrument pour la mesure de l'allongement des boulons\" class=\"wp-image-997\" style=\"border-color:#000000;border-width:1px;border-radius:15px\" srcset=\"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?resize=150%2C150&amp;ssl=1 150w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:4%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<p class=\"wp-block-paragraph\">Les sources que nous avons v\u00e9rifi\u00e9es \u2014 le sommaire officiel de la norme et la documentation technique du secteur \u2014 confirment les quatre m\u00e9thodes de pr\u00e9contrainte \u00e9num\u00e9r\u00e9es ci-dessus : couple, combin\u00e9e, HRC et indicateur direct de tension.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nous pr\u00e9f\u00e9rons vous dire avec la m\u00eame clart\u00e9 ce que ces m\u00eames sources ne rapportent <strong>pas<\/strong> : aucune des deux ne cite de m\u00e9thodes de pr\u00e9contrainte fond\u00e9es sur la mesure de l&rsquo;allongement du boulon, ni de m\u00e9thodes ultrasonores. Nous n&rsquo;affirmons donc pas que l&rsquo;EN 1090-2 les pr\u00e9voie. Celui qui doit \u00e9valuer l&#8217;emploi d&rsquo;une telle technique sur une structure soumise \u00e0 la norme doit en v\u00e9rifier l&rsquo;admissibilit\u00e9 sur le texte en vigueur et la convenir dans la documentation d&rsquo;ex\u00e9cution.  <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La mesure ultrasonore de l&rsquo;allongement reste en tout cas une technique de contr\u00f4le ind\u00e9pendante et largement employ\u00e9e dans d&rsquo;autres contextes industriels, o\u00f9 il faut conna\u00eetre la charge r\u00e9ellement pr\u00e9sente dans un boulon plut\u00f4t que le couple appliqu\u00e9.<\/p>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\">Instruments conseill\u00e9s<\/h2>\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th style=\"background-color:#225f78;color:#ffffff;padding:10px\">Instrument<\/th><th style=\"background-color:#225f78;color:#ffffff;padding:10px\">Emploi<\/th><\/tr><\/thead><tbody><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/moniteurs-de-tension-de-boulons\/dakota-bt1-dl-moniteur-de-tension-de-boulons-portable\/\">Dakota BT1-DL<\/a><\/td><td>Moniteur de tension des boulons portatif, pour l&#8217;emploi sur chantier<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/fr\/produits\/moniteurs-de-tension-de-boulons\/dakota-bt2-dl-moniteur-de-tension-de-boulons-de-table\/\">Dakota BT2-DL<\/a><\/td><td>Version de paillasse pour essais et caract\u00e9risation en atelier<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/prodotti\/monitor-tensione-bulloni\/dakota-multimax-monitoraggio-remoto-4-canali\/\">Dakota MultiMax<\/a><\/td><td>Surveillance \u00e0 distance sur quatre voies<\/td><\/tr><tr><td><a href=\"https:\/\/ultrasuonindt.it\/prodotti\/software-e-app\/multiui-configurazione-e-monitoraggio-multimax\/\">MultiUI<\/a><\/td><td>Configuration et surveillance du syst\u00e8me MultiMax<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\">Questions fr\u00e9quentes<\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1757402201\"><strong class=\"schema-faq-question\">Quelle partie de l&rsquo;EN 1090 concerne les structures en acier ?<\/strong><p class=\"schema-faq-answer\">La partie 2, intitul\u00e9e Execution of steel structures and aluminium structures \u2014 Part 2: Technical requirements for steel structures. L&rsquo;\u00e9dition de r\u00e9f\u00e9rence est celle de 2018, compl\u00e9t\u00e9e par l&rsquo;amendement A1 de 2024. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757402202\"><strong class=\"schema-faq-question\">Quelles sont les m\u00e9thodes de pr\u00e9contrainte pr\u00e9vues ?<\/strong><p class=\"schema-faq-answer\">Les sources consult\u00e9es confirment quatre m\u00e9thodes : la m\u00e9thode du couple, la m\u00e9thode combin\u00e9e, la m\u00e9thode HRC et la m\u00e9thode \u00e0 indicateur direct de tension (DTI). Le sujet est trait\u00e9 dans la section 8 de la norme. <\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1757402203\"><strong class=\"schema-faq-question\">L&rsquo;EN 1090-2 admet-elle la mesure ultrasonore de l&rsquo;allongement ?<\/strong><p class=\"schema-faq-answer\">Les sources que nous avons consult\u00e9es ne citent pas de m\u00e9thodes de pr\u00e9contrainte par allongement ou ultrasonores, et nous pr\u00e9f\u00e9rons le dire ouvertement plut\u00f4t que de le supposer. Un tel emploi doit \u00eatre v\u00e9rifi\u00e9 sur le texte en vigueur de la norme et convenu dans la documentation d&rsquo;ex\u00e9cution. <\/p><\/div><\/div>\n\n<p class=\"wp-block-paragraph\">Retour \u00e0 <a href=\"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/normes-pour-le-serrage-boulonne\/\">Normes pour le serrage boulonn\u00e9<\/a> ou \u00e9crivez-nous depuis la page <a href=\"https:\/\/ultrasuonindt.it\/fr\/contacts\/\">Contact<\/a>.<\/p>\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading\">Informations compl\u00e9mentaires et contacts <\/h5>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Partenaire division syst\u00e8mes et int\u00e9gration de capteurs : <a href=\"http:\/\/www.roder.it\">www.roder.it<\/a><br\/>Plus d&rsquo;informations sur RODER SRL : <a href=\"https:\/\/ultrasuonindt.it\/chi-siamo\/\">qui sommes-nous<\/a><br\/>Contact pour informations g\u00e9n\u00e9rales : <a href=\"mailto:info@roder.it\">info@roder.it<\/a><br\/>Contact pour informations sur ces produits : <a href=\"mailto:info@roder.it\">info@roder.it<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><br\/>Les informations contenues dans cette page web sont fournies \u00e0 titre purement informatif. Bien qu&rsquo;elles aient \u00e9t\u00e9 \u00e9labor\u00e9es avec le plus grand soin, elles ne constituent ni une offre contractuelle ni un engagement contraignant de fourniture. Elles peuvent contenir des erreurs de transcription, de traduction ou des coquilles. Pour des informations pr\u00e9cises et \u00e0 jour, nous vous invitons \u00e0 contacter directement notre soci\u00e9t\u00e9.    <\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Certaines images pr\u00e9sentes sur ce site web ont \u00e9t\u00e9 intentionnellement g\u00e9n\u00e9r\u00e9es \u00e0 l&rsquo;aide de l&rsquo;Intelligence Artificielle (IA). Cela tient au fait que, pour de nombreuses applications et projets, il n&rsquo;est pas possible de divulguer des photographies de l&rsquo;installation ou du syst\u00e8me r\u00e9el en raison d&rsquo;accords de confidentialit\u00e9, de clauses de confidentialit\u00e9 et d&rsquo;accords de non-divulgation (NDA). <\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Dans les structures en acier, la pr\u00e9contrainte des boulons n&rsquo;est pas un d\u00e9tail de montage : c&rsquo;est une exigence d&rsquo;ex\u00e9cution, et la norme indique par quelles m\u00e9thodes on peut l&rsquo;obtenir. L&rsquo;EN 1090-2 est la norme d&rsquo;ex\u00e9cution des structures m\u00e9talliques. Le titre complet de la partie 2 est \u201cExecution of steel structures and aluminium structures \u2014 [&hellip;]<\/p>\n","protected":false},"author":157040980,"featured_media":3278,"parent":4659,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"La section 8 de l'EN 1090-2:2018 et les assemblages boulonn\u00e9s : quelles m\u00e9thodes de pr\u00e9contrainte sont admises dans l'ex\u00e9cution des structures porteuses en acier.","_wpcom_ai_launchpad_about_page":false,"_wpcom_ai_launchpad_gallery_page":false,"_wpcom_ai_launchpad_contact_page":false,"_wpcom_ai_launchpad_events_page":false,"_wpcom_ai_launchpad_video_page":false,"_wpcom_ai_launchpad_portfolio_piece":false,"footnotes":""},"class_list":["post-3368","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - 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L'\u00e9dition de r\u00e9f\u00e9rence est celle de 2018, compl\u00e9t\u00e9e par l'amendement A1 de 2024. ","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/normes-pour-le-serrage-boulonne\/len-1090-et-les-assemblages-structurels\/#faq-question-1757402202","position":2,"url":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/normes-pour-le-serrage-boulonne\/len-1090-et-les-assemblages-structurels\/#faq-question-1757402202","name":"Quelles sont les m\u00e9thodes de pr\u00e9contrainte pr\u00e9vues ?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Les sources consult\u00e9es confirment quatre m\u00e9thodes : la m\u00e9thode du couple, la m\u00e9thode combin\u00e9e, la m\u00e9thode HRC et la m\u00e9thode \u00e0 indicateur direct de tension (DTI). Le sujet est trait\u00e9 dans la section 8 de la norme. ","inLanguage":"fr-FR"},"inLanguage":"fr-FR"},{"@type":"Question","@id":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/normes-pour-le-serrage-boulonne\/len-1090-et-les-assemblages-structurels\/#faq-question-1757402203","position":3,"url":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/normes-pour-le-serrage-boulonne\/len-1090-et-les-assemblages-structurels\/#faq-question-1757402203","name":"L'EN 1090-2 admet-elle la mesure ultrasonore de l'allongement ?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Les sources que nous avons consult\u00e9es ne citent pas de m\u00e9thodes de pr\u00e9contrainte par allongement ou ultrasonores, et nous pr\u00e9f\u00e9rons le dire ouvertement plut\u00f4t que de le supposer. Un tel emploi doit \u00eatre v\u00e9rifi\u00e9 sur le texte en vigueur de la norme et convenu dans la documentation d'ex\u00e9cution. ","inLanguage":"fr-FR"},"inLanguage":"fr-FR"}]}},"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/PeHTL3-Sk","jetpack-related-posts":[{"id":4659,"url":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/normes-pour-le-serrage-boulonne\/","url_meta":{"origin":3368,"position":0},"title":"Normes pour le serrage boulonn\u00e9","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Deux mondes aux exigences diff\u00e9rentes : l'\u00e9tanch\u00e9it\u00e9 d'une bride sous pression et la r\u00e9sistance d'un assemblage structural. Tous deux d\u00e9pendent de la charge effective des boulons, mais la r\u00e9gissent par des r\u00e8gles distinctes. \u2713 ASME PCC-1 : lignes directrices pour les assemblages \u00e0 brides sous pression \u2713 EN 1090-2 :\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT BT Bolt Tension Monitor application de mesure par ultrasons de l'allongement des boulons","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_bt_bolt_tension_monitor_per-applicazioni_di_misura_elongazione_bulloni-web-700x700-1.webp?fit=700%2C700&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":3277,"url":"https:\/\/ultrasuonindt.it\/fr\/applications\/construction-et-infrastructures\/","url_meta":{"origin":3368,"position":1},"title":"Construction et Infrastructures","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Sur les ponts, b\u00e2timents industriels et r\u00e9seaux d'eau, le patrimoine en acier vieillit sous des couches de peinture et de terre. La mesure par ultrasons quantifie l'\u00e9paisseur r\u00e9siduelle sans rien d\u00e9molir, et transforme une inspection visuelle en une donn\u00e9e avec laquelle on peut calculer. \u2713 \u00c9paisseur r\u00e9siduelle des profil\u00e9s et\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT CX application de mesure d'\u00e9paisseur par ultrasons sur pi\u00e8ces de charpente","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_CX_applicazione_misura_spessore_su_parti_di_carpenteria-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":3343,"url":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/normes-pour-linspection-des-soudures\/en-iso-17640-le-controle-ultrasonore-manuel-des-assemblages-soudes\/","url_meta":{"origin":3368,"position":2},"title":"EN ISO 17640 : le contr\u00f4le ultrasonore manuel des assemblages soud\u00e9s","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"L'EN ISO 17640 est la norme de technique : elle d\u00e9crit comment s'effectue le contr\u00f4le ultrasonore manuel d'un assemblage soud\u00e9 par fusion et d\u00e9finit quatre niveaux de contr\u00f4le \u00e0 probabilit\u00e9 de d\u00e9tection croissante. \u2713 \u00c9dition de r\u00e9f\u00e9rence : EN ISO 17640:2018 \u2713 Assemblages soud\u00e9s par fusion en mat\u00e9riaux m\u00e9talliques \u2713\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Dakota NDT FX70 Flaw Detector Powerful pour mesures de d\u00e9fauts et fissures \u00e0 ultrasons","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_FX70-Flaw-Detector-Powerful_per_misure_di_difetti_e_cricche-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_FX70-Flaw-Detector-Powerful_per_misure_di_difetti_e_cricche-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_FX70-Flaw-Detector-Powerful_per_misure_di_difetti_e_cricche-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_FX70-Flaw-Detector-Powerful_per_misure_di_difetti_e_cricche-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-strumento_FX70-Flaw-Detector-Powerful_per_misure_di_difetti_e_cricche-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":4621,"url":"https:\/\/ultrasuonindt.it\/fr\/technologies-et-normes-end\/normes-pour-linspection-des-soudures\/","url_meta":{"origin":3368,"position":3},"title":"Normes pour l&rsquo;inspection des soudures","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Dans le contr\u00f4le des soudures coexistent deux traditions normatives, l'europ\u00e9enne ISO et l'am\u00e9ricaine AWS et ASME. Savoir laquelle s'applique \u00e0 la commande passe avant toute consid\u00e9ration technique. \u2713 EN ISO 17640 : techniques et niveaux d'essai pour les assemblages soud\u00e9s par fusion \u2713 AWS D1.1 : le code am\u00e9ricain des\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"D\u00e9tecteur de d\u00e9fauts \u00e0 ultrasons Dakota NDT famille FX en application sur le terrain","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?fit=1200%2C837&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?fit=1200%2C837&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?fit=1200%2C837&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?fit=1200%2C837&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-FX71-DL_rilevatore_di_difetti_ad_ultrasuoni.jpeg?fit=1200%2C837&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":3164,"url":"https:\/\/ultrasuonindt.it\/fr\/applications\/energie-et-energies-renouvelables\/","url_meta":{"origin":3368,"position":4},"title":"\u00c9nergie et \u00c9nergies renouvelables","author":"GSM","date":"7 septembre 2026","format":false,"excerpt":"Dans le secteur de l'\u00e9nergie, deux contr\u00f4les d\u00e9terminent la disponibilit\u00e9 de l'installation : la charge r\u00e9elle des boulons dans les assemblages structuraux et l'\u00e9paisseur r\u00e9siduelle des tuyauteries et des g\u00e9n\u00e9rateurs de vapeur. 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Cette section explique comment fonctionne le contr\u00f4le par ultrasons, ce qui distingue un mode de l'autre et quelles normes r\u00e9gissent la mati\u00e8re. \u2713 Les modes de mesure expliqu\u00e9s un par un, avec leur emploi \u2713 D\u00e9tection de d\u00e9fauts : A-Scan, B-Scan,\u2026","rel":"","context":"Article similaire","block_context":{"text":"Article similaire","link":""},"img":{"alt_text":"Main tenant un palpeur \u00e0 ultrasons Dakota NDT pendant l'inspection","src":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/ultrasuonindt.it\/wp-content\/uploads\/2026\/04\/dakota_ndt-strumenti_di_misura_ad_ultrasuoni-immagine_con_mano_che_tiene_in_posizione_sonda_ad-ultrasuoni-web-1200x1200-1.webp?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/3368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/users\/157040980"}],"replies":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/comments?post=3368"}],"version-history":[{"count":6,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/3368\/revisions"}],"predecessor-version":[{"id":4381,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/3368\/revisions\/4381"}],"up":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/pages\/4659"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/media\/3278"}],"wp:attachment":[{"href":"https:\/\/ultrasuonindt.it\/fr\/wp-json\/wp\/v2\/media?parent=3368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}