{"id":17345,"date":"2026-09-14T06:20:55","date_gmt":"2026-09-14T06:20:55","guid":{"rendered":"https:\/\/www.dgcrane.com\/?p=17345"},"modified":"2026-09-14T06:20:58","modified_gmt":"2026-09-14T06:20:58","slug":"jib-crane-deflection-calculator","status":"publish","type":"post","link":"https:\/\/www.dgcrane.com\/fr\/jib-crane-deflection-calculator\/","title":{"rendered":"Calculateur de d\u00e9flexion de grue \u00e0 fl\u00e8che"},"content":{"rendered":"<!-- WordPress Custom HTML: paste this entire block without adding html or body tags. -->\n<div id=\"calculator\" data-jib-deflection-calculator>\n  <style>\n    #calculator {\n      --primary-color:#0a3487;\n      --primary-hover:#F58423;\n      --error-color:#e53935;\n      --bg-color:#EAEEF7;\n      --text-color:#4a4a4a;\n      --surface-color:#ffffff;\n      --border-color:#cccccc;\n      max-width:545px;\n      padding:30px;\n      background:var(--bg-color);\n      color:var(--text-color);\n      box-sizing:border-box;\n      font-family:Arial,sans-serif;\n    }\n    #calculator * { box-sizing:border-box; }\n    #calculator .calc-title { font-size:18px; font-weight:bold; margin-bottom:6px; }\n    #calculator .calc-row { margin-bottom:18px; }\n    #calculator .calc-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:0 16px; }\n    #calculator label { display:block; font-size:14px; margin-bottom:6px; }\n    #calculator input,\n    #calculator select {\n      width:100%; height:36px; padding:0 10px; border:1px solid var(--border-color);\n      border-radius:0; background:var(--surface-color); color:var(--text-color);\n      font-size:16px; transition:all .2s ease;\n    }\n    #calculator input:focus,\n    #calculator select:focus { outline:none; border:2px solid var(--primary-color); }\n    #calculator input.error,\n    #calculator select.error { border:2px solid var(--error-color); }\n    #calculator .error-msg { display:none; color:var(--error-color); font-size:12px; margin-top:4px; }\n    #calculator .error-msg.show { display:block; }\n    #calculator .help { display:block; font-size:12px; margin-top:4px; }\n    #calculator .safety-note {\n      grid-column:1 \/ -1;\n      margin:-10px 0 18px;\n      font-size:12px;\n      line-height:1.5;\n    }\n    #calculator .btn-group { display:flex; gap:12px; margin-top:24px; }\n    #calculator button {\n      flex:1; height:34px; line-height:34px; padding:0 10px; border:0; border-radius:0;\n      cursor:pointer; font-size:14px; transition:all .2s ease;\n    }\n    #calculator #calculator-submit { background:var(--primary-color); color:var(--surface-color); }\n    #calculator #calculator-submit:hover { background:var(--primary-hover); }\n    #calculator #calculator-reset { background:var(--surface-color); color:var(--primary-color); border:1px solid var(--primary-color); }\n    #calculator .result-wrap { margin-top:24px; padding:16px; border:1px solid var(--border-color); background:var(--surface-color); text-align:center; }\n    #calculator .result-title { font-size:14px; }\n    #calculator .result-value { margin:4px 0 0; color:var(--primary-color); font-size:40px; font-weight:bold; }\n    #calculator .error-summary { display:none; margin-bottom:14px; color:var(--error-color); font-size:13px; }\n    #calculator .error-summary.show { display:block; }\n    @media (max-width:768px) {\n      #calculator .calc-grid { grid-template-columns:1fr; }\n      #calculator .safety-note { grid-column:auto; }\n      #calculator label, #calculator button { font-size:.28rem; }\n      #calculator input, #calculator select { height:.7rem; font-size:.28rem; }\n      #calculator button { height:.7rem; line-height:.7rem; width:100%; }\n      #calculator .btn-group { flex-direction:column; }\n      #calculator .result-value { font-size:.56rem; }\n    }\n  <\/style>\n\n\n  <div id=\"calculator-form\">\n    <div id=\"calculator-error-summary\" class=\"error-summary\" role=\"alert\" tabindex=\"-1\"><\/div>\n    <div class=\"calc-grid\">\n      <div class=\"calc-row\">\n        <label for=\"calculator-safetyFactor\">Coefficient de s\u00e9curit\u00e9, k<\/label>\n        <select id=\"calculator-safetyFactor\">\n          <option value=\"1.0\" selected>1.00 \u2013 Fonctionnement statique normal<\/option>\n          <option value=\"1.1\">1.10 \u2013 Fonctionnement en marche\/arr\u00eat ou avec variateur de fr\u00e9quence<\/option>\n          <option value=\"1.15\">1.15 \u2013 Fonctionnement marche\/arr\u00eat ou variateur de fr\u00e9quence<\/option>\n          <option value=\"1.2\">1.20 \u2013 Mouvement plus rapide ou impact notable<\/option>\n          <option value=\"1.3\">1,30 \u2013 Mouvement plus rapide ou impact notable<\/option>\n        <\/select>\n        <div class=\"error-msg\" id=\"calculator-safetyFactor-error\"><\/div>\n      <\/div>\n      <div class=\"calc-row\"><label for=\"calculator-ratedLoad\">Capacit\u00e9 nominale, Q (N)<\/label><input id=\"calculator-ratedLoad\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-ratedLoad-error\"><\/div><\/div>\n\n      <div class=\"calc-row\"><label for=\"calculator-hoistWeight\">Poids du palan \u00e9lectrique, Gh (N)<\/label><input id=\"calculator-hoistWeight\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-hoistWeight-error\"><\/div><\/div>\n      <div class=\"calc-row\"><label for=\"calculator-radius\">rayon de rotation effectif de la poutre en porte-\u00e0-faux, a (mm)<\/label><input id=\"calculator-radius\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-radius-error\"><\/div><\/div>\n      <div class=\"calc-row\"><label for=\"calculator-columnHeight\">Hauteur effective de la colonne, L (mm)<\/label><input id=\"calculator-columnHeight\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-columnHeight-error\"><\/div><\/div>\n      <div class=\"calc-row\"><label for=\"calculator-elasticModulus\">Module d&#39;\u00e9lasticit\u00e9 de l&#39;acier, E (N\/mm\u00b2)<\/label><input id=\"calculator-elasticModulus\" type=\"number\" step=\"any\" min=\"0\" value=\"206000\" inputmode=\"decimal\" autocomplete=\"off\"><small class=\"help\"><\/small><div class=\"error-msg\" id=\"calculator-elasticModulus-error\"><\/div><\/div>\n      <div class=\"calc-row\">\n        <label for=\"calculator-beamSpecification\">Sp\u00e9cifications des poutres en I<\/label>\n        <select id=\"calculator-beamSpecification\">\n          <option value=\"\" selected>\u2014 S\u00e9lectionner les sp\u00e9cifications des poutres en I \u2014<\/option>\n          <option value=\"16\">16<\/option>\n          <option value=\"18\">18<\/option>\n          <option value=\"20a\">20a<\/option>\n          <option value=\"22a\">22a<\/option>\n          <option value=\"25b\">25b<\/option>\n          <option value=\"28a\">28a<\/option>\n          <option value=\"32a\">32a<\/option>\n        <\/select>\n        <div class=\"error-msg\" id=\"calculator-beamSpecification-error\"><\/div>\n      <\/div>\n      <div class=\"calc-row\">\n        <label for=\"calculator-beamInertia\">inertie de la section de poutre en porte-\u00e0-faux, J1 (cm\u2074)<\/label>\n        <select id=\"calculator-beamInertia\">\n          <option value=\"\" selected>\u2014 S\u00e9lectionner la valeur J1 \u2014<\/option>\n          <option value=\"1130\">1130<\/option>\n          <option value=\"1660\">1660<\/option>\n          <option value=\"2370\">2370<\/option>\n          <option value=\"3400\">3400<\/option>\n          <option value=\"5280\">5280<\/option>\n          <option value=\"7110\">7110<\/option>\n          <option value=\"11100\">11100<\/option>\n        <\/select>\n        <div class=\"error-msg\" id=\"calculator-beamInertia-error\"><\/div>\n      <\/div>\n      <div class=\"calc-row\"><label for=\"calculator-outerDiameter\">Diam\u00e8tre ext\u00e9rieur du tube en acier de la colonne, D (mm)<\/label><input id=\"calculator-outerDiameter\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-outerDiameter-error\"><\/div><\/div>\n      <div class=\"calc-row\"><label for=\"calculator-innerDiameter\">Diam\u00e8tre int\u00e9rieur du tube en acier de la colonne, d (mm)<\/label><input id=\"calculator-innerDiameter\" type=\"number\" step=\"any\" min=\"0\" inputmode=\"decimal\" autocomplete=\"off\"><div class=\"error-msg\" id=\"calculator-innerDiameter-error\"><\/div><\/div>\n    <\/div>\n    <div class=\"btn-group\"><button id=\"calculator-submit\" type=\"button\">Calculer la d\u00e9flexion<\/button><button id=\"calculator-reset\" type=\"button\">R\u00e9initialiser<\/button><\/div>\n  <\/div>\n\n  <div class=\"result-wrap\" aria-live=\"polite\" aria-atomic=\"true\">\n    <div class=\"result-title\">D\u00e9flexion totale calcul\u00e9e, \u03b4<\/div>\n    <div id=\"calculator-result\" class=\"result-value\">&#8212;<\/div>\n  <\/div>\n\n  <script>\n    (function jibCraneDeflectionCalculator() {\n      \"use strict\";\n      const currentScript = document.currentScript;\n      const root = currentScript && currentScript.closest(\"[data-jib-deflection-calculator]\")\n        ? currentScript.closest(\"[data-jib-deflection-calculator]\")\n        : document.querySelector(\"[data-jib-deflection-calculator]\");\n      if (!root) return;\n      const submitButton = root.querySelector(\"#calculator-submit\");\n      const resetButton = root.querySelector(\"#calculator-reset\");\n      const beamSpecification = root.querySelector(\"#calculator-beamSpecification\");\n      const fields = [\"safetyFactor\",\"ratedLoad\",\"hoistWeight\",\"radius\",\"columnHeight\",\"elasticModulus\",\"beamInertia\",\"outerDiameter\",\"innerDiameter\"];\n      const result = root.querySelector(\"#calculator-result\");\n      const errorSummary = root.querySelector(\"#calculator-error-summary\");\n      function getInput(fieldName) { return root.querySelector(\"#calculator-\" + fieldName); }\n      function setError(fieldName, message) {\n        const input = getInput(fieldName);\n        const error = root.querySelector(\"#calculator-\" + fieldName + \"-error\");\n        input.classList.add(\"error\"); error.textContent = message; error.classList.add(\"show\");\n      }\n      function clearError(fieldName) {\n        const input = getInput(fieldName);\n        const error = root.querySelector(\"#calculator-\" + fieldName + \"-error\");\n        input.classList.remove(\"error\"); error.textContent = \"\"; error.classList.remove(\"show\");\n      }\n      function validateInput(fieldName) {\n        const input = getInput(fieldName);\n        const value = Number.parseFloat(input.value);\n        clearError(fieldName);\n        if (input.value.trim() === \"\" || !Number.isFinite(value) || value <= 0) {\n          setError(fieldName, \"Enter a finite value greater than 0.\"); return null;\n        }\n        return value;\n      }\n      function calculateDeflection(values) {\n        const totalLoad = values.safetyFactor * values.ratedLoad + values.hoistWeight;\n        const columnInertia = Math.PI \/ 64 * (Math.pow(values.outerDiameter, 4) - Math.pow(values.innerDiameter, 4));\n        const beamInertiaMm4 = values.beamInertia * 10000;\n        const beamDeflection = totalLoad * Math.pow(values.radius, 3) \/ (3 * values.elasticModulus * beamInertiaMm4);\n        const columnDeflection = totalLoad * Math.pow(values.radius, 2) * values.columnHeight \/ (values.elasticModulus * columnInertia);\n        return { totalLoad:totalLoad, columnInertia:columnInertia, beamDeflection:beamDeflection, columnDeflection:columnDeflection, totalDeflection:beamDeflection + columnDeflection };\n      }\n      function resetResult() { result.textContent = \"--\"; }\n      submitButton.addEventListener(\"click\", function () {\n        errorSummary.textContent = \"\"; errorSummary.classList.remove(\"show\");\n        const values = {};\n        fields.forEach(function (fieldName) { values[fieldName] = validateInput(fieldName); });\n        if (fields.some(function (fieldName) { return values[fieldName] === null; })) {\n          resetResult();\n          errorSummary.textContent = \"Please correct the highlighted input values.\"; errorSummary.classList.add(\"show\"); errorSummary.focus(); return;\n        }\n        if (values.innerDiameter >= values.outerDiameter) {\n          setError(\"innerDiameter\", \"d must be smaller than D.\");\n          resetResult();\n          errorSummary.textContent = \"The inside diameter d must be smaller than the outside diameter D.\"; errorSummary.classList.add(\"show\"); errorSummary.focus(); return;\n        }\n        const calculation = calculateDeflection(values);\n        if (!Number.isFinite(calculation.totalDeflection) || calculation.columnInertia <= 0) {\n          resetResult();\n          errorSummary.textContent = \"The calculation could not produce a finite result. Check the input magnitudes.\"; errorSummary.classList.add(\"show\"); errorSummary.focus(); return;\n        }\n        result.textContent = calculation.totalDeflection.toFixed(2) + \" mm\";\n      });\n      fields.forEach(function (fieldName) {\n        getInput(fieldName).addEventListener(\"input\", function () { clearError(fieldName); errorSummary.textContent = \"\"; errorSummary.classList.remove(\"show\"); });\n      });\n      getInput(\"safetyFactor\").addEventListener(\"change\", function () {\n        clearError(\"safetyFactor\");\n        errorSummary.textContent = \"\";\n        errorSummary.classList.remove(\"show\");\n      });\n      const beamOptions = [\n        { specification:\"16\", inertia:\"1130\" },\n        { specification:\"18\", inertia:\"1660\" },\n        { specification:\"20a\", inertia:\"2370\" },\n        { specification:\"22a\", inertia:\"3400\" },\n        { specification:\"25b\", inertia:\"5280\" },\n        { specification:\"28a\", inertia:\"7110\" },\n        { specification:\"32a\", inertia:\"11100\" }\n      ];\n      beamSpecification.addEventListener(\"change\", function () {\n        const match = beamOptions.find(function (item) { return item.specification === beamSpecification.value; });\n        getInput(\"beamInertia\").value = match ? match.inertia : \"\";\n        clearError(\"beamSpecification\");\n        clearError(\"beamInertia\");\n        errorSummary.textContent = \"\";\n        errorSummary.classList.remove(\"show\");\n      });\n      getInput(\"beamInertia\").addEventListener(\"change\", function () {\n        const match = beamOptions.find(function (item) { return item.inertia === getInput(\"beamInertia\").value; });\n        beamSpecification.value = match ? match.specification : \"\";\n        clearError(\"beamSpecification\");\n        clearError(\"beamInertia\");\n        errorSummary.textContent = \"\";\n        errorSummary.classList.remove(\"show\");\n      });\n      resetButton.addEventListener(\"click\", function () {\n        fields.forEach(function (fieldName) {\n          getInput(fieldName).value = \"\";\n          clearError(fieldName);\n        });\n        getInput(\"safetyFactor\").value = \"1.0\";\n        getInput(\"elasticModulus\").value = \"206000\";\n        beamSpecification.value = \"\";\n        errorSummary.textContent = \"\";\n        errorSummary.classList.remove(\"show\");\n        resetResult();\n      });\n    }());\n  <\/script>\n<\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\">Formule de calcul de la d\u00e9flexion d&#39;une grue \u00e0 fl\u00e8che<\/h2>\n\n\n\n<div id=\"jib-deflection-formula\">\n  <style>\n    #jib-deflection-formula {\n      font-family: \"Cambria Math\", \"Times New Roman\", serif;\n      font-size: 26px !important;\n      line-height: 1.6;\n      color: #000 !important;\n      text-align: left;\n    }\n\n    #jib-deflection-formula * {\n      color: inherit;\n    }\n\n    #jib-deflection-formula .formula-line {\n      display: flex;\n      align-items: center;\n      justify-content: flex-start;\n      flex-wrap: wrap;\n      gap: 6px;\n    }\n\n    #jib-deflection-formula .fraction {\n      display: inline-flex;\n      flex-direction: column;\n      align-items: center;\n      margin: 0 4px;\n      line-height: 1.2;\n      vertical-align: middle;\n    }\n\n    #jib-deflection-formula .numerator {\n      padding: 0 8px 3px;\n      text-align: center;\n    }\n\n    #jib-deflection-formula .denominator {\n      min-width: 100%;\n      padding: 3px 8px 0;\n      border-top: 1.5px solid #000;\n      text-align: center;\n    }\n\n    #jib-deflection-formula sub {\n      font-size: 0.72em;\n      vertical-align: -0.3em;\n    }\n\n    #jib-deflection-formula sup {\n      font-size: 0.72em;\n      vertical-align: 0.45em;\n    }\n\n    @media (max-width: 600px) {\n      #jib-deflection-formula {\n        font-size: 23px !important;\n      }\n    }\n  <\/style>\n\n  <div\n    class=\"formula-line\"\n    role=\"math\"\n    aria-label=\"delta equals p a cubed divided by 3 E J 1, plus p a squared L divided by E J 2\"\n  >\n    <span>\u03b4 =<\/span>\n\n    <span class=\"fraction\">\n      <span class=\"numerator\">Pennsylvanie<sup>3<\/sup><\/span>\n      <span class=\"denominator\">3EJ<sub>1<\/sub><\/span>\n    <\/span>\n\n    <span>+<\/span>\n\n    <span class=\"fraction\">\n      <span class=\"numerator\">Pennsylvanie<sup>2<\/sup>L<\/span>\n      <span class=\"denominator\">EJ<sub>2<\/sub><\/span>\n    <\/span>\n  <\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>p : Coefficient de s\u00e9curit\u00e9 \u00d7 capacit\u00e9 + poids du palan \u00e9lectrique<\/li>\n\n\n\n<li>a : rayon de rotation effectif de la poutre en porte-\u00e0-faux<\/li>\n\n\n\n<li>L : Hauteur effective de la colonne<\/li>\n\n\n\n<li>E : Module d&#39;\u00e9lasticit\u00e9 de l&#39;acier (g\u00e9n\u00e9ralement pris comme 2,06 \u00d7 10\u00b9\u00b9 Pa)<\/li>\n\n\n\n<li>J.<sub>1<\/sub>: Inertie de la section de poutre en porte-\u00e0-faux (poutre en I)<\/li>\n\n\n\n<li>J.<sub>2<\/sub>: Inertie de la section de colonne (tuyau en acier)<\/li>\n<\/ul>\n\n\n\n<div id=\"column-inertia-formula\">\n  <style>\n    #column-inertia-formula {\n      font-family: \"Cambria Math\", \"Times New Roman\", serif;\n      font-size: 26px !important;\n      line-height: 1.6;\n      color: #000 !important;\n      text-align: left;\n    }\n\n    #column-inertia-formula * {\n      color: inherit;\n    }\n\n    #column-inertia-formula .formula-line {\n      display: flex;\n      align-items: center;\n      justify-content: flex-start;\n      flex-wrap: wrap;\n      gap: 6px;\n    }\n\n    #column-inertia-formula .fraction {\n      display: inline-flex;\n      flex-direction: column;\n      align-items: center;\n      margin: 0 4px;\n      line-height: 1.2;\n      vertical-align: middle;\n    }\n\n    #column-inertia-formula .numerator {\n      padding: 0 9px 3px;\n      text-align: center;\n    }\n\n    #column-inertia-formula .denominator {\n      min-width: 100%;\n      padding: 3px 9px 0;\n      border-top: 1.5px solid #000;\n      text-align: center;\n    }\n\n    #column-inertia-formula sub {\n      font-size: 0.72em;\n      vertical-align: -0.3em;\n    }\n\n    #column-inertia-formula sup {\n      font-size: 0.72em;\n      vertical-align: 0.45em;\n    }\n\n    @media (max-width: 600px) {\n      #column-inertia-formula {\n        font-size: 23px !important;\n      }\n    }\n  <\/style>\n\n  <div\n    class=\"formula-line\"\n    role=\"math\"\n    aria-label=\"J 2 equals pi divided by 64 multiplied by D to the fourth minus d to the fourth\"\n  >\n    <span>J.<sub>2<\/sub> =<\/span>\n\n    <span class=\"fraction\">\n      <span class=\"numerator\">\u03c0<\/span>\n      <span class=\"denominator\">64<\/span>\n    <\/span>\n\n    <span>(D<sup>4<\/sup> \u2212 d<sup>4<\/sup>)<\/span>\n  <\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D : Diam\u00e8tre ext\u00e9rieur du tube en acier de la colonne<\/li>\n\n\n\n<li>d : Diam\u00e8tre int\u00e9rieur du tube en acier de la colonne<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Notes<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Le module d&#39;\u00e9lasticit\u00e9 de l&#39;acier est g\u00e9n\u00e9ralement consid\u00e9r\u00e9 comme \u00e9tant de 2,06 \u00d7 10\u00b9\u00b9 Pa<\/li>\n\n\n\n<li>Coefficient de s\u00e9curit\u00e9\u00a0: 1,00 pour un calcul statique normal\u00a0; 1,10 \u00e0 1,15 pour un fonctionnement avec d\u00e9marrage\/arr\u00eat ou variateur de fr\u00e9quence\u00a0; 1,20 \u00e0 1,30 pour des mouvements plus rapides ou des impacts importants. \u00c0 utiliser uniquement pour une estimation pr\u00e9liminaire.<\/li>\n\n\n\n<li>Ce calculateur de fl\u00e8che de grue \u00e0 fl\u00e8che inclut d\u00e9j\u00e0 les sp\u00e9cifications courantes des poutres en I et leurs moments d&#39;inertie J.<sub>1<\/sub>, qui font r\u00e9f\u00e9rence aux valeurs des aciers de construction sp\u00e9cifi\u00e9es dans l&#39;annexe A de <a href=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/09\/hot-rolled-section-steel-GBT-706-2016.pdf\">GB\/T 706-2016<\/a> ou ISO 657-1:2026 (les deux normes sont essentiellement coh\u00e9rentes) et s&#39;appliquent aux poutres en I lamin\u00e9es \u00e0 chaud. <\/li>\n\n\n\n<li>Le tableau ci-dessous r\u00e9pertorie d&#39;autres sp\u00e9cifications de poutres en I et leurs valeurs correspondantes pour votre s\u00e9lection.<\/li>\n<\/ul>\n\n\n\n<!-- Independent GB\/T 706-2016 reference table. -->\n<div id=\"gb706-ibeam-reference-table\">\n  <style>\n    #gb706-ibeam-reference-table {\n      width: 100%;\n      max-width: 760px;\n      margin: 20px auto;\n      color: #333333;\n      font-family: Arial, \"Microsoft YaHei\", sans-serif;\n      font-size: 14px;\n      line-height: 1.35;\n    }\n\n    #gb706-ibeam-reference-table *,\n    #gb706-ibeam-reference-table *::before,\n    #gb706-ibeam-reference-table *::after {\n      box-sizing: border-box;\n    }\n\n    #gb706-ibeam-reference-table .gb706-table-wrap {\n      width: 100%;\n      overflow-x: auto;\n    }\n\n    #gb706-ibeam-reference-table table {\n      width: 100%;\n      min-width: 480px;\n      border-collapse: collapse;\n      table-layout: fixed;\n      background: #ffffff;\n    }\n\n    #gb706-ibeam-reference-table caption {\n      padding: 0 0 10px;\n      color: #222222;\n      font-size: 17px;\n      font-weight: 700;\n      text-align: left;\n    }\n\n    #gb706-ibeam-reference-table th,\n    #gb706-ibeam-reference-table td {\n      width: 25%;\n      padding: 6px 10px;\n      border: 1px solid #777777;\n      text-align: center;\n      vertical-align: middle;\n    }\n\n    #gb706-ibeam-reference-table thead th {\n      background: #f2f2f2;\n      color: #222222;\n      font-weight: 700;\n    }\n\n    #gb706-ibeam-reference-table tbody td:nth-child(1),\n    #gb706-ibeam-reference-table tbody td:nth-child(3) {\n      font-weight: 600;\n    }\n\n    #gb706-ibeam-reference-table tbody td:nth-child(2),\n    #gb706-ibeam-reference-table tbody td:nth-child(4) {\n      font-variant-numeric: tabular-nums;\n    }\n\n    #gb706-ibeam-reference-table .gb706-note {\n      margin: 8px 0 0;\n      color: #555555;\n      font-size: 12px;\n    }\n\n    @media (max-width: 600px) {\n      #gb706-ibeam-reference-table {\n        margin: 12px auto;\n        font-size: 12px;\n      }\n\n      #gb706-ibeam-reference-table caption {\n        font-size: 15px;\n      }\n\n      #gb706-ibeam-reference-table th,\n      #gb706-ibeam-reference-table td {\n        padding: 5px 7px;\n      }\n    }\n  <\/style>\n\n  <div class=\"gb706-table-wrap\">\n    <table>\n      <caption>Autres sp\u00e9cifications des poutres en I et moment d&#39;inertie de la section<\/caption>\n      <thead>\n        <tr>\n          <th scope=\"col\">poutre en I<\/th>\n          <th scope=\"col\">Ix \/ cm<sup>4<\/sup><\/th>\n          <th scope=\"col\">poutre en I<\/th>\n          <th scope=\"col\">Ix \/ cm<sup>4<\/sup><\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr><td>10<\/td><td>245<\/td><td>12<\/td><td>436<\/td><\/tr>\n        <tr><td>12.6<\/td><td>488<\/td><td>14<\/td><td>712<\/td><\/tr>\n        <tr><td>20b<\/td><td>2,500<\/td><td>22b<\/td><td>3,570<\/td><\/tr>\n        <tr><td>24a<\/td><td>4,570<\/td><td>24b<\/td><td>4,800<\/td><\/tr>\n        <tr><td>25a<\/td><td>5,020<\/td><td>27a<\/td><td>6,550<\/td><\/tr>\n        <tr><td>27b<\/td><td>6,870<\/td><td>28b<\/td><td>7,480<\/td><\/tr>\n        <tr><td>30a<\/td><td>8,950<\/td><td>30b<\/td><td>9,400<\/td><\/tr>\n        <tr><td>30c<\/td><td>9,850<\/td><td>32b<\/td><td>11,600<\/td><\/tr>\n        <tr><td>32c<\/td><td>12,200<\/td><td>36a<\/td><td>15,800<\/td><\/tr>\n        <tr><td>36b<\/td><td>16,500<\/td><td>36c<\/td><td>17,300<\/td><\/tr>\n        <tr><td>40a<\/td><td>21,700<\/td><td>40b<\/td><td>22,800<\/td><\/tr>\n        <tr><td>40c<\/td><td>23,900<\/td><td>45a<\/td><td>32,200<\/td><\/tr>\n        <tr><td>45b<\/td><td>33,800<\/td><td>45c<\/td><td>35,300<\/td><\/tr>\n        <tr><td>50a<\/td><td>46,500<\/td><td>50b<\/td><td>48,600<\/td><\/tr>\n        <tr><td>50c<\/td><td>50,600<\/td><td>55a<\/td><td>62,900<\/td><\/tr>\n        <tr><td>55b<\/td><td>65,600<\/td><td>55c<\/td><td>68,400<\/td><\/tr>\n        <tr><td>56a<\/td><td>65,600<\/td><td>56b<\/td><td>68,500<\/td><\/tr>\n        <tr><td>56c<\/td><td>71,400<\/td><td>63a<\/td><td>93,900<\/td><\/tr>\n        <tr><td>63b<\/td><td>98,100<\/td><td>63c<\/td><td>102,000<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <p class=\"gb706-note\">Source : GB\/T 706-2016, Annexe A, Tableau A.1. Ix est le moment d&#39;inertie autour de l&#39;axe x.<\/p>\n<\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\">Grue \u00e0 fl\u00e8che applicable<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Grue \u00e0 fl\u00e8che debout libre<\/li>\n\n\n\n<li>Grue \u00e0 fl\u00e8che standard FEM<\/li>\n\n\n\n<li>Poste de travail Grue \u00e0 fl\u00e8che<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"Le calculateur de fl\u00e8che de grue \u00e0 potence estime la flexion de la potence vers le bas sous les charges lev\u00e9es afin de v\u00e9rifier la s\u00e9curit\u00e9 d&#39;utilisation. \u00c0 partir de param\u00e8tres cl\u00e9s tels que le rayon de rotation effectif de la poutre en porte-\u00e0-faux et la hauteur effective de la colonne, il valide la conformit\u00e9 aux normes ISO, GB et autres normes applicables. Une fl\u00e8che excessive provoque des oscillations de la charge et des erreurs de positionnement, et peut entra\u00eener une d\u00e9formation permanente, une instabilit\u00e9 ou une rupture. Un \u00e9cart important entre la fl\u00e8che r\u00e9elle et la fl\u00e8che calcul\u00e9e indique une surcharge, des articulations desserr\u00e9es ou des d\u00e9fauts. Le calculateur de fl\u00e8che de grue \u00e0 potence facilite le d\u00e9pannage et garantit un fonctionnement fiable de la grue.","protected":false},"author":8,"featured_media":17361,"parent":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"single-onlinetools.php","format":"standard","meta":{"_acf_changed":false,"rank_math_lock_modified_date":false,"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[1059],"tags":[],"class_list":["post-17345","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-online-tools"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/fr\/wp-json\/wp\/v2\/posts\/17345"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/fr\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/fr\/wp-json\/wp\/v2\/comments?post=17345"}],"version-history":[{"count":17,"href":"https:\/\/www.dgcrane.com\/fr\/wp-json\/wp\/v2\/posts\/17345\/revisions"}],"predecessor-version":[{"id":17366,"href":"https:\/\/www.dgcrane.com\/fr\/wp-json\/wp\/v2\/posts\/17345\/revisions\/17366"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/fr\/wp-json\/wp\/v2\/media\/17361"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/fr\/wp-json\/wp\/v2\/media?parent=17345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/fr\/wp-json\/wp\/v2\/categories?post=17345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/fr\/wp-json\/wp\/v2\/tags?post=17345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}