{"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\/sw\/jib-crane-deflection-calculator\/","title":{"rendered":"Kikokotoo cha Kupotoka kwa Jib Crane"},"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\">Kipengele cha usalama, k<\/label>\n        <select id=\"calculator-safetyFactor\">\n          <option value=\"1.0\" selected>1.00 - Uendeshaji wa kawaida tuli<\/option>\n          <option value=\"1.1\">1.10 - Operesheni ya Anza\/Simamisha au VFD<\/option>\n          <option value=\"1.15\">1.15 - Operesheni ya Anza\/Simamisha au VFD<\/option>\n          <option value=\"1.2\">1.20 - Mwendo wa haraka au athari inayoonekana<\/option>\n          <option value=\"1.3\">1.30 - Mwendo wa haraka au athari inayoonekana<\/option>\n        <\/select>\n        <div class=\"error-msg\" id=\"calculator-safetyFactor-error\"><\/div>\n      <\/div>\n      <div class=\"calc-row\"><label for=\"calculator-ratedLoad\">Uwezo uliokadiriwa, 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\">Uzito wa kiinua umeme, 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\">Radius ya kushona yenye ufanisi wa boriti ya cantilever, 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\">Urefu unaofaa wa safu wima, 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\">Moduli ya elastic ya chuma, 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\">Vipimo vya boriti ya I<\/label>\n        <select id=\"calculator-beamSpecification\">\n          <option value=\"\" selected>\u2014 Chagua vipimo vya boriti ya 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\">Usumbufu wa sehemu ya boriti ya Cantilever, J1 (cm\u2074)<\/label>\n        <select id=\"calculator-beamInertia\">\n          <option value=\"\" selected>\u2014 Chagua thamani ya 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\">Kipenyo cha nje cha bomba la chuma la safu wima, 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\">Kipenyo cha ndani cha bomba la chuma la safu wima, 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\">Hesabu Mpotovu<\/button><button id=\"calculator-reset\" type=\"button\">Weka upya<\/button><\/div>\n  <\/div>\n\n  <div class=\"result-wrap\" aria-live=\"polite\" aria-atomic=\"true\">\n    <div class=\"result-title\">Jumla ya kupotoka iliyohesabiwa, \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\">Fomula ya Kikokotoo cha Kupotoka kwa Jib Crane<\/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\">pa<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\">pa<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: Kipengele cha usalama \u00d7 uwezo + uzito wa kiinua umeme<\/li>\n\n\n\n<li>a: Radius ya kushona yenye ufanisi wa boriti ya Cantilever<\/li>\n\n\n\n<li>L: Urefu unaofaa kwa safu wima<\/li>\n\n\n\n<li>E: Moduli ya elastic ya chuma (kawaida huchukuliwa kama 2.06 \u00d7 10\u00b9\u00b9 Pa)<\/li>\n\n\n\n<li>J<sub>1<\/sub>: Inertia ya sehemu ya boriti ya Cantilever (I-boriti)<\/li>\n\n\n\n<li>J<sub>2<\/sub>: Inertia ya sehemu ya safu wima (bomba la chuma)<\/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: Kipenyo cha nje cha bomba la chuma la safu<\/li>\n\n\n\n<li>d: Kipenyo cha ndani cha bomba la chuma la safu<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Vidokezo<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Moduli ya elastic ya chuma kwa kawaida huchukuliwa kama 2.06 \u00d7 10\u00b9\u00b9 Pa<\/li>\n\n\n\n<li>Uteuzi wa vipengele vya usalama: 1.00 kwa hesabu ya kawaida tuli. 1.10-1.15 kwa ajili ya kuanza\/kusimamisha au uendeshaji wa VFD. 1.20-1.30 kwa mwendo wa haraka au athari inayoonekana. Tumia kwa makadirio ya awali pekee.<\/li>\n\n\n\n<li>Kikokotoo hiki cha kupotosha kreni ya jib tayari kinajumuisha vipimo vya kawaida vya boriti ya I na nyakati zake za hali ya chini J<sub>1<\/sub>, ambayo hurejelea thamani za chuma za kimuundo zilizoainishwa katika Kiambatisho A cha <a href=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/09\/hot-rolled-section-steel-GBT-706-2016.pdf\">GB\/T 706-2016<\/a> au ISO 657-1:2026 (viwango hivi viwili kimsingi vinaendana) na vinatumika kwa mihimili ya I iliyoviringishwa kwa moto. <\/li>\n\n\n\n<li>Jedwali lililo hapa chini linaorodhesha vipimo vingine vya I-boriti na thamani zinazolingana kwa uteuzi wako.<\/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>Vipimo Vingine vya I-boriti na Sehemu ya Wakati wa Inertia<\/caption>\n      <thead>\n        <tr>\n          <th scope=\"col\">Mwangaza wa I<\/th>\n          <th scope=\"col\">Ix \/ cm<sup>4<\/sup><\/th>\n          <th scope=\"col\">Mwangaza wa 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\">Chanzo: GB\/T 706-2016, Kiambatisho A, Jedwali A.1. Ix ni wakati wa hali ya kutofanya kazi kuhusu mhimili wa x.<\/p>\n<\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\">Kreni ya Jib Inayotumika<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Jib Crane ya Bila Malipo<\/li>\n\n\n\n<li>Kreni ya Jib ya Kawaida ya FEM<\/li>\n\n\n\n<li>Kreni ya Jib ya Kituo cha Kazi<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"Kikokotoo cha kupotoka kwa kreni ya jib kinakadiria kuinama kwa jib chini ya mizigo iliyoinuliwa ili kuangalia usalama wa uendeshaji. Kwa vigezo vya msingi ikiwa ni pamoja na radius ya kushona yenye ufanisi wa boriti ya jib cantilever na urefu unaofaa wa safu, inathibitisha kufuata ISO, GB na mipaka ya kawaida inayohusiana. Kupotoka kupita kiasi husababisha makosa ya kutikisika kwa mzigo na kuweka nafasi, na kunaweza kusababisha mabadiliko ya kudumu, kutokuwa na utulivu au kuvunjika. Pengo kubwa kati ya kupotoka halisi na iliyohesabiwa inaonyesha mzigo kupita kiasi, viungo vilivyolegea au hitilafu. Kikokotoo cha kupotoka kwa kreni ya jib husaidia kutatua matatizo na uendeshaji wa kuaminika wa kreni ya jib.","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\/sw\/wp-json\/wp\/v2\/posts\/17345"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/comments?post=17345"}],"version-history":[{"count":17,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/posts\/17345\/revisions"}],"predecessor-version":[{"id":17366,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/posts\/17345\/revisions\/17366"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/media\/17361"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/media?parent=17345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/categories?post=17345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/sw\/wp-json\/wp\/v2\/tags?post=17345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}