Civil Engineering Calculator<\/title>\n <script src=\"https:\/\/cdn.tailwindcss.com\"><\/script>\n <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Sarabun:wght@300;400;600;700&display=swap\" rel=\"stylesheet\">\n <style>\n \n <\/style>\n<\/head>\n<body class=\"flex items-center justify-center min-h-screen px-4 bg-slate-100\">\n <div class=\"w-full max-w-md bg-white shadow-2xl rounded-3xl overflow-hidden border border-slate-200\">\n \n <div class=\"bg-slate-800 p-5 text-center border-b-4 border-amber-500\">\n <span class=\"text-amber-500 text-xs font-bold uppercase tracking-widest\">Constant Remark<\/span>\n <h2 class=\"text-white text-xl font-bold mt-1\">Es = 2,040,000 ksc<\/h2>\n <p class=\"text-slate-400 text-[10px] mt-1 italic\">* \u0e04\u0e48\u0e32\u0e04\u0e07\u0e17\u0e35\u0e48\u0e42\u0e21\u0e14\u0e39\u0e25\u0e31\u0e2a\u0e22\u0e37\u0e14\u0e2b\u0e22\u0e38\u0e48\u0e19\u0e02\u0e2d\u0e07\u0e40\u0e2b\u0e25\u0e47\u0e01\u0e17\u0e35\u0e48\u0e43\u0e0a\u0e49\u0e43\u0e19\u0e2a\u0e39\u0e15\u0e23\u0e19\u0e35\u0e49<\/p>\n <\/div>\n\n <div class=\"p-8\">\n <div class=\"mb-8\">\n <label class=\"block text-slate-500 text-xs font-bold mb-3 uppercase tracking-wider text-center\">\n \u0e23\u0e30\u0e1a\u0e38\u0e01\u0e33\u0e25\u0e31\u0e07\u0e2d\u0e31\u0e14\u0e04\u0e2d\u0e19\u0e01\u0e23\u0e35\u0e15 (f’c)\n <\/label>\n <div class=\"relative\">\n <input type=\"number\" id=\"fc\" value=\"240\" oninput=\"calculate()\" \n class=\"w-full text-4xl font-black text-center py-5 bg-slate-50 border-2 border-slate-200 rounded-2xl focus:border-blue-500 focus:bg-white transition-all outline-none text-slate-800\">\n <div class=\"absolute bottom-2 right-4 text-slate-300 font-bold text-sm\">ksc<\/div>\n <\/div>\n <\/div>\n\n <div class=\"space-y-3\">\n <div class=\"p-4 bg-white border border-slate-100 rounded-xl shadow-sm\">\n <div class=\"flex justify-between items-center mb-1\">\n <span class=\"text-slate-500 text-xs font-bold uppercase\">1. \u0e04\u0e48\u0e32\u0e19\u0e27\u0e13 Ec<\/span>\n <span class=\"text-[10px] text-blue-500 font-mono\">15,100 \u00d7 \u221af’c<\/span>\n <\/div>\n <div class=\"flex justify-between items-baseline\">\n <span class=\"text-slate-400 text-sm italic\">Modulus of Concrete<\/span>\n <span class=\"text-xl font-bold text-slate-700\" id=\"ec_val\">–<\/span>\n <\/div>\n <\/div>\n\n <div class=\"p-6 bg-gradient-to-br from-blue-600 to-indigo-700 rounded-2xl text-white shadow-xl shadow-blue-100\">\n <div class=\"flex justify-between items-center mb-2\">\n <span class=\"text-blue-100 text-xs font-bold uppercase tracking-widest\">2. Modular Ratio (n)<\/span>\n <span class=\"text-[10px] bg-blue-500 px-2 py-0.5 rounded text-white font-mono\">Es \/ Ec<\/span>\n <\/div>\n <div class=\"text-center py-2\">\n <span class=\"text-6xl font-black tracking-tighter\" id=\"n_val\">–<\/span>\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"mt-8 pt-6 border-t border-slate-100\">\n <h4 class=\"text-[10px] font-bold text-slate-400 uppercase mb-2 tracking-widest\">\u0e2a\u0e23\u0e38\u0e1b\u0e2a\u0e39\u0e15\u0e23\u0e04\u0e33\u0e19\u0e27\u0e13<\/h4>\n <div class=\"space-y-1 text-xs text-slate-500 leading-relaxed\">\n <div class=\"flex justify-between\">\n <span>Steel Modulus (Es):<\/span>\n <span class=\"font-mono font-bold\">2,040,000 ksc<\/span>\n <\/div>\n <div class=\"flex justify-between\">\n <span>Concrete Modulus (Ec):<\/span>\n <span class=\"font-mono\">15,100 \u00d7 \u221af’c<\/span>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"bg-slate-50 p-4 text-center\">\n <p class=\"text-[9px] text-slate-400 uppercase tracking-tighter\">Generated by Gemini for Civil Engineering Utility<\/p>\n <\/div>\n <\/div>\n\n <script>\n function calculate() {\n \/\/ \u0e14\u0e36\u0e07\u0e04\u0e48\u0e32 fc'\n const fc = parseFloat(document.getElementById('fc').value) || 0;\n\n \/\/ \u0e04\u0e48\u0e32\u0e04\u0e07\u0e17\u0e35\u0e48 Es \u0e17\u0e35\u0e48\u0e23\u0e30\u0e1a\u0e38\u0e43\u0e2b\u0e49\u0e42\u0e0a\u0e27\u0e4c\u0e40\u0e1b\u0e47\u0e19 Remark\n const es = 2040000;\n \n \/\/ \u0e2a\u0e39\u0e15\u0e23: Ec = 15100 * sqrt(fc)\n const ec = 15100 * Math.sqrt(fc);\n \n \/\/ \u0e2a\u0e39\u0e15\u0e23: n = Es \/ Ec\n const n = ec > 0 ? es \/ ec : 0;\n\n \/\/ \u0e41\u0e2a\u0e14\u0e07\u0e1c\u0e25 Ec\n document.getElementById('ec_val').innerText = ec.toLocaleString(undefined, {\n maximumFractionDigits: 0\n }) + \" ksc\";\n \n \/\/ \u0e41\u0e2a\u0e14\u0e07\u0e1c\u0e25 n (\u0e1b\u0e31\u0e14\u0e40\u0e28\u0e29 3 \u0e15\u0e33\u0e41\u0e2b\u0e19\u0e48\u0e07)\n document.getElementById('n_val').innerText = n.toFixed(3);\n }\n\n \/\/ \u0e40\u0e23\u0e34\u0e48\u0e21\u0e15\u0e49\u0e19\u0e04\u0e33\u0e19\u0e27\u0e13\u0e40\u0e21\u0e37\u0e48\u0e2d\u0e42\u0e2b\u0e25\u0e14\u0e2b\u0e19\u0e49\u0e32\n calculate();\n <\/script>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>Civil Engineering Calculator Constant Remark Es = 2,040,000 ksc * \u0e04\u0e48\u0e32\u0e04\u0e07\u0e17\u0e35\u0e48\u0e42\u0e21\u0e14\u0e39\u0e25\u0e31\u0e2a\u0e22\u0e37\u0e14\u0e2b\u0e22\u0e38\u0e48\u0e19\u0e02\u0e2d\u0e07\u0e40\u0e2b\u0e25\u0e47\u0e01\u0e17\u0e35\u0e48\u0e43\u0e0a\u0e49\u0e43\u0e19\u0e2a\u0e39\u0e15\u0e23\u0e19\u0e35\u0e49 \u0e23\u0e30\u0e1a\u0e38\u0e01\u0e33\u0e25\u0e31\u0e07\u0e2d\u0e31\u0e14\u0e04\u0e2d\u0e19\u0e01\u0e23\u0e35\u0e15 (f’c) ksc 1. \u0e04\u0e48\u0e32\u0e19\u0e27\u0e13 Ec 15,100 \u00d7 \u221af’c Modulus of Concrete – 2. Modular Ratio (n) Es \/ Ec – \u0e2a\u0e23\u0e38\u0e1b\u0e2a\u0e39\u0e15\u0e23\u0e04\u0e33\u0e19\u0e27\u0e13 Steel Modulus (Es): 2,040,000 ksc Concrete Modulus (Ec): 15,100 \u00d7 \u221af’c Generated by Gemini for Civil Engineering Utility<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-basic","meta":{"footnotes":""},"class_list":["post-198","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/pages\/198","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.e2connection.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=198"}],"version-history":[{"count":2,"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/pages\/198\/revisions"}],"predecessor-version":[{"id":238,"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/pages\/198\/revisions\/238"}],"wp:attachment":[{"href":"https:\/\/www.e2connection.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":198,"date":"2026-02-11T17:23:17","date_gmt":"2026-02-11T10:23:17","guid":{"rendered":"https:\/\/www.e2connection.com\/?page_id=198"},"modified":"2026-02-11T18:04:20","modified_gmt":"2026-02-11T11:04:20","slug":"es-ec-calculator","status":"publish","type":"page","link":"https:\/\/www.e2connection.com\/?page_id=198","title":{"rendered":"Es Ec calculator"},"content":{"rendered":"\n\n\n\n \n \n Civil Engineering Calculator<\/title>\n <script src=\"https:\/\/cdn.tailwindcss.com\"><\/script>\n <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Sarabun:wght@300;400;600;700&display=swap\" rel=\"stylesheet\">\n <style>\n \n <\/style>\n<\/head>\n<body class=\"flex items-center justify-center min-h-screen px-4 bg-slate-100\">\n <div class=\"w-full max-w-md bg-white shadow-2xl rounded-3xl overflow-hidden border border-slate-200\">\n \n <div class=\"bg-slate-800 p-5 text-center border-b-4 border-amber-500\">\n <span class=\"text-amber-500 text-xs font-bold uppercase tracking-widest\">Constant Remark<\/span>\n <h2 class=\"text-white text-xl font-bold mt-1\">Es = 2,040,000 ksc<\/h2>\n <p class=\"text-slate-400 text-[10px] mt-1 italic\">* \u0e04\u0e48\u0e32\u0e04\u0e07\u0e17\u0e35\u0e48\u0e42\u0e21\u0e14\u0e39\u0e25\u0e31\u0e2a\u0e22\u0e37\u0e14\u0e2b\u0e22\u0e38\u0e48\u0e19\u0e02\u0e2d\u0e07\u0e40\u0e2b\u0e25\u0e47\u0e01\u0e17\u0e35\u0e48\u0e43\u0e0a\u0e49\u0e43\u0e19\u0e2a\u0e39\u0e15\u0e23\u0e19\u0e35\u0e49<\/p>\n <\/div>\n\n <div class=\"p-8\">\n <div class=\"mb-8\">\n <label class=\"block text-slate-500 text-xs font-bold mb-3 uppercase tracking-wider text-center\">\n \u0e23\u0e30\u0e1a\u0e38\u0e01\u0e33\u0e25\u0e31\u0e07\u0e2d\u0e31\u0e14\u0e04\u0e2d\u0e19\u0e01\u0e23\u0e35\u0e15 (f’c)\n <\/label>\n <div class=\"relative\">\n <input type=\"number\" id=\"fc\" value=\"240\" oninput=\"calculate()\" \n class=\"w-full text-4xl font-black text-center py-5 bg-slate-50 border-2 border-slate-200 rounded-2xl focus:border-blue-500 focus:bg-white transition-all outline-none text-slate-800\">\n <div class=\"absolute bottom-2 right-4 text-slate-300 font-bold text-sm\">ksc<\/div>\n <\/div>\n <\/div>\n\n <div class=\"space-y-3\">\n <div class=\"p-4 bg-white border border-slate-100 rounded-xl shadow-sm\">\n <div class=\"flex justify-between items-center mb-1\">\n <span class=\"text-slate-500 text-xs font-bold uppercase\">1. \u0e04\u0e48\u0e32\u0e19\u0e27\u0e13 Ec<\/span>\n <span class=\"text-[10px] text-blue-500 font-mono\">15,100 \u00d7 \u221af’c<\/span>\n <\/div>\n <div class=\"flex justify-between items-baseline\">\n <span class=\"text-slate-400 text-sm italic\">Modulus of Concrete<\/span>\n <span class=\"text-xl font-bold text-slate-700\" id=\"ec_val\">–<\/span>\n <\/div>\n <\/div>\n\n <div class=\"p-6 bg-gradient-to-br from-blue-600 to-indigo-700 rounded-2xl text-white shadow-xl shadow-blue-100\">\n <div class=\"flex justify-between items-center mb-2\">\n <span class=\"text-blue-100 text-xs font-bold uppercase tracking-widest\">2. Modular Ratio (n)<\/span>\n <span class=\"text-[10px] bg-blue-500 px-2 py-0.5 rounded text-white font-mono\">Es \/ Ec<\/span>\n <\/div>\n <div class=\"text-center py-2\">\n <span class=\"text-6xl font-black tracking-tighter\" id=\"n_val\">–<\/span>\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"mt-8 pt-6 border-t border-slate-100\">\n <h4 class=\"text-[10px] font-bold text-slate-400 uppercase mb-2 tracking-widest\">\u0e2a\u0e23\u0e38\u0e1b\u0e2a\u0e39\u0e15\u0e23\u0e04\u0e33\u0e19\u0e27\u0e13<\/h4>\n <div class=\"space-y-1 text-xs text-slate-500 leading-relaxed\">\n <div class=\"flex justify-between\">\n <span>Steel Modulus (Es):<\/span>\n <span class=\"font-mono font-bold\">2,040,000 ksc<\/span>\n <\/div>\n <div class=\"flex justify-between\">\n <span>Concrete Modulus (Ec):<\/span>\n <span class=\"font-mono\">15,100 \u00d7 \u221af’c<\/span>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"bg-slate-50 p-4 text-center\">\n <p class=\"text-[9px] text-slate-400 uppercase tracking-tighter\">Generated by Gemini for Civil Engineering Utility<\/p>\n <\/div>\n <\/div>\n\n <script>\n function calculate() {\n \/\/ \u0e14\u0e36\u0e07\u0e04\u0e48\u0e32 fc'\n const fc = parseFloat(document.getElementById('fc').value) || 0;\n\n \/\/ \u0e04\u0e48\u0e32\u0e04\u0e07\u0e17\u0e35\u0e48 Es \u0e17\u0e35\u0e48\u0e23\u0e30\u0e1a\u0e38\u0e43\u0e2b\u0e49\u0e42\u0e0a\u0e27\u0e4c\u0e40\u0e1b\u0e47\u0e19 Remark\n const es = 2040000;\n \n \/\/ \u0e2a\u0e39\u0e15\u0e23: Ec = 15100 * sqrt(fc)\n const ec = 15100 * Math.sqrt(fc);\n \n \/\/ \u0e2a\u0e39\u0e15\u0e23: n = Es \/ Ec\n const n = ec > 0 ? es \/ ec : 0;\n\n \/\/ \u0e41\u0e2a\u0e14\u0e07\u0e1c\u0e25 Ec\n document.getElementById('ec_val').innerText = ec.toLocaleString(undefined, {\n maximumFractionDigits: 0\n }) + \" ksc\";\n \n \/\/ \u0e41\u0e2a\u0e14\u0e07\u0e1c\u0e25 n (\u0e1b\u0e31\u0e14\u0e40\u0e28\u0e29 3 \u0e15\u0e33\u0e41\u0e2b\u0e19\u0e48\u0e07)\n document.getElementById('n_val').innerText = n.toFixed(3);\n }\n\n \/\/ \u0e40\u0e23\u0e34\u0e48\u0e21\u0e15\u0e49\u0e19\u0e04\u0e33\u0e19\u0e27\u0e13\u0e40\u0e21\u0e37\u0e48\u0e2d\u0e42\u0e2b\u0e25\u0e14\u0e2b\u0e19\u0e49\u0e32\n calculate();\n <\/script>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>Civil Engineering Calculator Constant Remark Es = 2,040,000 ksc * \u0e04\u0e48\u0e32\u0e04\u0e07\u0e17\u0e35\u0e48\u0e42\u0e21\u0e14\u0e39\u0e25\u0e31\u0e2a\u0e22\u0e37\u0e14\u0e2b\u0e22\u0e38\u0e48\u0e19\u0e02\u0e2d\u0e07\u0e40\u0e2b\u0e25\u0e47\u0e01\u0e17\u0e35\u0e48\u0e43\u0e0a\u0e49\u0e43\u0e19\u0e2a\u0e39\u0e15\u0e23\u0e19\u0e35\u0e49 \u0e23\u0e30\u0e1a\u0e38\u0e01\u0e33\u0e25\u0e31\u0e07\u0e2d\u0e31\u0e14\u0e04\u0e2d\u0e19\u0e01\u0e23\u0e35\u0e15 (f’c) ksc 1. \u0e04\u0e48\u0e32\u0e19\u0e27\u0e13 Ec 15,100 \u00d7 \u221af’c Modulus of Concrete – 2. Modular Ratio (n) Es \/ Ec – \u0e2a\u0e23\u0e38\u0e1b\u0e2a\u0e39\u0e15\u0e23\u0e04\u0e33\u0e19\u0e27\u0e13 Steel Modulus (Es): 2,040,000 ksc Concrete Modulus (Ec): 15,100 \u00d7 \u221af’c Generated by Gemini for Civil Engineering Utility<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-basic","meta":{"footnotes":""},"class_list":["post-198","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/pages\/198","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.e2connection.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=198"}],"version-history":[{"count":2,"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/pages\/198\/revisions"}],"predecessor-version":[{"id":238,"href":"https:\/\/www.e2connection.com\/index.php?rest_route=\/wp\/v2\/pages\/198\/revisions\/238"}],"wp:attachment":[{"href":"https:\/\/www.e2connection.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}