{"id":135,"date":"2025-01-17T13:59:09","date_gmt":"2025-01-17T13:59:09","guid":{"rendered":"https:\/\/tiangjalan.com\/pabrik\/?page_id=135"},"modified":"2025-09-27T20:47:44","modified_gmt":"2025-09-27T20:47:44","slug":"tiang-petir","status":"publish","type":"page","link":"https:\/\/tiangjalan.com\/pabrik\/tiang-petir\/","title":{"rendered":"Tiang Petir"},"content":{"rendered":"\n\n\n

Apa Itu Tiang Penangkal Petir?<\/strong><\/h3>

Tiang penangkal petir adalah struktur yang digunakan untuk menopang head terminal<\/strong> atau ujung penangkal petir<\/strong>, yang berfungsi menangkap sambaran petir dan menyalurkannya ke tanah melalui sistem grounding, sehingga melindungi bangunan, peralatan elektronik, dan manusia dari dampak sambaran petir.<\/p>

Jenis-Jenis Tiang Penangkal Petir<\/strong><\/h3>
    \r\n
  1. \r\n

    Berdasarkan Material:<\/strong><\/p>\r\n

      \r\n
    • Baja Galvanis<\/strong> \u2192 Tahan korosi, umum digunakan di area terbuka.<\/li>\r\n
    • Stainless Steel<\/strong> \u2192 Lebih estetis dan tahan lama, sering dipakai di bangunan tinggi.<\/li>

    • <\/li>\r\n
    • Berdasarkan Bentuk dan Konstruksi:<\/strong><\/span><\/li><\/ul><\/li>
    • \r\n
        \r\n
      • Tiang Tunggal<\/strong> \u2192 Tiang lurus satu batang, biasanya untuk rumah atau bangunan kecil.<\/li>\r\n
      • Tiang Teleskopik<\/strong> \u2192 Bisa disesuaikan tingginya, cocok untuk area yang membutuhkan fleksibilitas.<\/li>\r\n
      • Tiang Tripod<\/strong> \u2192 Memiliki tiga kaki untuk stabilitas lebih baik, cocok untuk daerah berangin kencang.<\/li>\r\n
      • Tiang Tower (Self-Supporting \/ SST\/Monopole\/pipa)<\/strong> \u2192 Digunakan untuk area luas atau infrastruktur besar seperti pabrik dan menara telekomunikasi.<\/li>

      • <\/li>\r\n<\/ul>\r\n<\/li>\r\n
      • \r\n

        Berdasarkan Penggunaan:<\/strong><\/p>\r\n

          \r\n
        • Tiang Penangkal Petir Konvensional<\/strong> \u2192 Menggunakan batang tembaga dengan ujung runcing sebagai penerima petir.<\/li>\r\n
        • Tiang Penangkal Petir Elektrostatis (Radius Protection)<\/strong> \u2192 Menggunakan terminal yang dapat menangkap petir dari radius tertentu, seperti ESE (Early Streamer Emission)<\/strong> dan Franklin Rod<\/strong>.

          <\/li><\/ul><\/li><\/ol>

          Implementasi Tiang Penangkal Petir<\/strong><\/h3>

          1. Pemilihan Lokasi<\/strong><\/h4>
            \r\n
          • Harus ditempatkan di titik tertinggi dari bangunan.<\/li>\r\n
          • Untuk area luas, bisa menggunakan beberapa tiang dengan sistem perlindungan zona.<\/li>\r\n<\/ul>

            2. Ketinggian Tiang<\/strong><\/h4>
              \r\n
            • Disesuaikan dengan luas area yang dilindungi.<\/li>\r\n
            • Rumus umum: H \u2265 (Luas Perlindungan \/ 2)<\/strong>, di mana H adalah tinggi tiang dalam meter.<\/li>\r\n
            • Contoh: Untuk perlindungan area 60 meter, diperlukan tiang sekitar 30 meter.<\/li>\r\n<\/ul>

              3. Sistem Grounding<\/strong><\/h4>
                \r\n
              • Tiang harus dihubungkan ke grounding dengan kabel tembaga minimal 50 mm\u00b2<\/strong>.<\/li>\r\n
              • Grounding bisa berupa elektroda batang<\/strong>, plat tembaga<\/strong>, atau jaringan grid<\/strong>.<\/li>\r\n<\/ul>

                4. Instalasi dan Perawatan<\/strong><\/h4>
                  \r\n
                • Harus dipasang dengan dudukan beton atau struktur yang kokoh.<\/li>\r\n
                • Perawatan berkala dilakukan dengan pengecekan koneksi kabel dan kondisi grounding.<\/li><\/ul>\n\n\n\n\n

                  Tiang Monopole<\/h3>\n\r\n\r\n\r\n \r\n \r\n Monopole Specifications<\/title>\r\n <style>\r\n \/* Menghilangkan ruang kosong di seluruh dokumen *\/\r\n html, body {\r\n margin: 0;\r\n padding: 0;\r\n height: 100%;\r\n width: 100%;\r\n box-sizing: border-box;\r\n }\r\n\r\n .container {\r\n width: 100%;\r\n height: 100%;\r\n padding: 0;\r\n margin: 0;\r\n }\r\n\r\n table {\r\n width: 100%; \/* Tabel memenuhi lebar wadah *\/\r\n height: 100%;\r\n border-collapse: collapse;\r\n }\r\n\r\n th, td {\r\n border: 1px solid #ccc;\r\n padding: 10px;\r\n text-align: left;\r\n }\r\n\r\n th {\r\n background-color: #f4f4f4;\r\n }\r\n\r\n tr:nth-child(even) {\r\n background-color: #f9f9f9;\r\n }\r\n <\/style>\r\n<\/head>\r\n<body>\r\n <div class=\"container\">\r\n <table>\r\n <thead>\r\n <tr>\r\n <th>Monopole<\/th>\r\n <th>Details<\/th>\r\n <th>Contact<\/th>\r\n <\/tr>\r\n <\/thead>\r\n <tbody>\r\n <tr>\r\n <td>10 Meter<\/td>\r\n <td>\r\n Pipa 4, 3, & 2 inc. Baseplate 12mm, 30 x 30mm.<br>\r\n Plange 10 mm. Tangga 16 mm\r\n <\/td>\r\n <td>CALL ME<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>15 Meter<\/td>\r\n <td>\r\n Pipa 5, 4, 3, & 2 inc. Baseplate 12 mm, 400 x 400mm.<br>\r\n Plange 10 mm. Tangga 16 mm\r\n <\/td>\r\n <td>CALL ME<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>20 Meter<\/td>\r\n <td>\r\n Pipa 6, 5, 4, 3 & 2 inc. Baseplate 15 mm, 500 x 500mm.<br>\r\n Plange 10 mm. Tangga 16 mm\r\n <\/td>\r\n <td>CALL ME<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>25 Meter<\/td>\r\n <td>\r\n Pipa 8, 6, 5, 4, 3 & 2 inc. Baseplate 15 mm, 500 x 500mm.<br>\r\n Plange 10-12 mm. Tangga 16 mm\r\n <\/td>\r\n <td>CALL ME<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>30 Meter<\/td>\r\n <td>\r\n Pipa 10, 8, 6, 5, 4, 3 & 2 inc. Baseplate 20 mm, 600 x 600mm.<br>\r\n Plange 12 mm. Tangga 16 mm\r\n <\/td>\r\n <td>CALL ME<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n <\/table>\r\n <\/div>\r\n<\/body>\r\n<\/html>\n<h3>Tower Triangle<\/h3>\n<table border=\"1\">\r\n <thead>\r\n <tr>\r\n <th>Jenis Tower<\/th>\r\n <th>Spesifikasi<\/th>\r\n <th>Harga – Rp<\/th>\r\n <\/tr>\r\n <\/thead>\r\n <tbody>\r\n <tr>\r\n <td>Tower Triangle Cat 20 \u2013 5M<\/td>\r\n <td>Besi utama behel 12 mm, tangga 8 mm<\/td>\r\n <td>945.000\/stage<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Triangle Galvaniz 20 \u2013 5M<\/td>\r\n <td>Besi utama behel 12 mm, tangga 8 mm<\/td>\r\n <td>1.350.000\/stage<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Triangle Cat 25 \u2013 5M<\/td>\r\n <td>Besi 12\/8\/8<\/td>\r\n <td>1.012.500\/stage<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Triangle Galvaniz 25 \u2013 5M<\/td>\r\n <td>Besi 12\/8\/8<\/td>\r\n <td>1.485.000\/stage<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Triangle Cat 30 \u2013 5M<\/td>\r\n <td>Besi 16\/10\/10<\/td>\r\n <td>1.282.500\/stage<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Triangle Galvaniz 30 \u2013 5M<\/td>\r\n <td>Besi 16\/10\/10<\/td>\r\n <td>1.957.500\/stage<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Triangle Cat 30 \u2013 2,5M<\/td>\r\n <td>Besi 16\/10\/10<\/td>\r\n <td>742.500\/stage<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Triangle Galvaniz 30 \u2013 2,55M<\/td>\r\n <td>Besi 16\/10\/10<\/td>\r\n <td>1.147.500<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Triangle Cat 40 \u2013 2M<\/td>\r\n <td>Besi 16\/10\/10<\/td>\r\n <td>877.500<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Triangle Galvaniz 40 \u2013 2M<\/td>\r\n <td>Besi 16\/10\/10<\/td>\r\n <td>1.417.500\/stage<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Fourangle Cat 30 \u2013 5M<\/td>\r\n <td>Besi 16\/10\/10<\/td>\r\n <td>2.025.000\/stage<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Fourangle Galvaniz 30 \u2013 5M<\/td>\r\n <td>Besi 16\/10\/10<\/td>\r\n <td>2.902.500\/stage<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Fourangle Cat 30 \u2013 2M<\/td>\r\n <td>Besi 16\/10\/10<\/td>\r\n <td>945.000<\/td>\r\n <\/tr>\r\n <tr>\r\n <td>Tower Fourangle Galvaniz 30 \u2013 2M<\/td>\r\n <td>Besi 16\/10\/10<\/td>\r\n <td>1.417.500<\/td>\r\n <\/tr>\r\n <\/tbody>\r\n<\/table>\n\n\n\n\n\n<p style=\"cursor: text;\"><span style=\"font-size: 14.4px;\">#TiangPenangkalPetir   #JualTiangPenangkalPetir   #TiangLightningRod   #TiangGrounding   #TiangMonopolePetir   #TiangAntiPetir   #TiangGalvanisPetir   #TiangPetirGalvanis   #TiangPetirBangunan   #TiangPetirRumah   #TiangPetirPabrik   #TiangPenangkalPetirMurah   #TiangPetirBerkualitas   #ProdusenTiangPetir   #PabrikTiangPetir   #TiangPetirOutdoor   #TiangPenangkalPetirGalvanis   #TiangPenangkalPetirIndonesia   #TiangPetirResmi   #SupplierTiangPetir #TowerTriangleCAT   #TowerTriangleGalvanis   #TowerFourAngle20cm   #TowerFourAngle30cm   #HargaPabrikTower   #TowerTriangleMurah   #TowerFourAngleMurah   #TowerGalvanisHargaPabrik   #TowerCATHargaPabrik   #TowerTriangleBerkualitas   #TowerSegitigaGalvanis   #TowerSegitigaCAT   #TowerFourAngleGalvanis   #JualTowerTriangle   #PabrikTowerSegitiga   #SupplierTowerFourAngle   #ProdusenTowerSegitiga   #TowerInternetMurah   #TowerRadioHargaPabrik   #TowerKomunikasiMurah<\/span><\/p>\n\n\n\n\n\n\n<!DOCTYPE html>\n<html lang=\"id\">\n<head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n <title>Kalkulator Berat dan Beban Tower Fourangle & Triangle<\/title>\n <style>\n * {\n box-sizing: border-box;\n font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\n }\n body {\n max-width: 900px;\n margin: 0 auto;\n padding: 20px;\n background-color: #f0f2f5;\n color: #333;\n }\n .container {\n background-color: white;\n padding: 25px;\n border-radius: 10px;\n box-shadow: 0 4px 15px rgba(0,0,0,0.1);\n }\n h1 {\n color: #2c3e50;\n text-align: center;\n margin-bottom: 10px;\n font-size: 24px;\n }\n .subtitle {\n text-align: center;\n color: #7f8c8d;\n margin-bottom: 30px;\n font-size: 16px;\n }\n .form-group {\n margin-bottom: 15px;\n display: flex;\n flex-direction: column;\n height: 100%;\n }\n label {\n display: block;\n margin-bottom: 5px;\n font-weight: 600;\n color: #2c3e50;\n }\n select, input {\n width: 100%;\n padding: 10px;\n border: 1px solid #ddd;\n border-radius: 5px;\n font-size: 14px;\n transition: border 0.3s;\n flex-grow: 1;\n }\n select:focus, input:focus {\n border-color: #3498db;\n outline: none;\n }\n .error {\n border-color: #e74c3c !important;\n }\n .error-message {\n color: #e74c3c;\n font-size: 12px;\n margin-top: 5px;\n display: none;\n }\n .form-row {\n display: flex;\n flex-wrap: wrap;\n margin: 0 -10px;\n margin-bottom: 15px;\n }\n .form-col {\n flex: 1;\n padding: 0 10px;\n min-width: 200px;\n display: flex;\n flex-direction: column;\n }\n .result {\n background-color: #f8f9fa;\n padding: 20px;\n border-radius: 8px;\n margin-top: 25px;\n border-left: 4px solid #3498db;\n display: none;\n }\n .result h3 {\n margin-top: 0;\n color: #2c3e50;\n border-bottom: 1px solid #e0e0e0;\n padding-bottom: 10px;\n }\n .result-item {\n margin-bottom: 10px;\n display: flex;\n justify-content: space-between;\n padding: 5px 0;\n }\n .result-label {\n font-weight: 600;\n color: #2c3e50;\n min-width: 200px;\n }\n .result-value {\n font-weight: bold;\n color: #2c3e50;\n text-align: right;\n flex: 1;\n }\n .button-group {\n display: flex;\n gap: 10px;\n margin-top: 20px;\n }\n button {\n flex: 1;\n padding: 12px 15px;\n border: none;\n border-radius: 5px;\n cursor: pointer;\n font-size: 16px;\n font-weight: 600;\n transition: all 0.3s;\n }\n #calculateBtn {\n background-color: #3498db;\n color: white;\n }\n #calculateBtn:hover {\n background-color: #2980b9;\n }\n #printBtn {\n background-color: #2ecc71;\n color: white;\n }\n #printBtn:hover {\n background-color: #27ae60;\n }\n #whatsappBtn {\n background-color: #25D366;\n color: white;\n }\n #whatsappBtn:hover {\n background-color: #128C7E;\n }\n .hidden {\n display: none;\n }\n .whatsapp-input {\n margin-top: 15px;\n }\n .whatsapp-input input {\n border: 1px solid #ddd;\n padding: 10px;\n border-radius: 5px;\n width: 100%;\n }\n footer {\n text-align: center;\n margin-top: 20px;\n color: #7f8c8d;\n font-size: 14px;\n }\n .website-link {\n color: #3498db;\n text-decoration: none;\n font-weight: bold;\n }\n .website-link:hover {\n text-decoration: underline;\n }\n \n \/* CSS untuk Print A4 *\/\n @media print {\n body {\n margin: 0;\n padding: 0;\n background: white;\n width: 210mm;\n height: 297mm;\n font-size: 12pt;\n }\n .container {\n width: 100%;\n max-width: 100%;\n margin: 0;\n padding: 15mm;\n box-shadow: none;\n border-radius: 0;\n page-break-after: always;\n }\n h1 {\n font-size: 18pt;\n text-align: center;\n margin-bottom: 10mm;\n }\n .subtitle {\n font-size: 12pt;\n margin-bottom: 15mm;\n }\n .form-section, .button-group, .whatsapp-input, footer {\n display: none;\n }\n .result {\n border: 1px solid #ccc;\n padding: 10mm;\n margin-top: 10mm;\n page-break-inside: avoid;\n display: block !important;\n }\n .result h3 {\n font-size: 14pt;\n }\n .result-item {\n font-size: 11pt;\n }\n .print-header {\n display: block;\n text-align: center;\n margin-bottom: 10mm;\n border-bottom: 1px solid #ccc;\n padding-bottom: 5mm;\n }\n .print-header h2 {\n margin: 0;\n font-size: 16pt;\n color: #2c3e50;\n }\n .print-date {\n font-size: 10pt;\n color: #7f8c8d;\n }\n }\n <\/style>\n<\/head>\n<body>\n <div class=\"container\">\n <div class=\"print-header\">\n <h2>LAPORAN PERHITUNGAN BERAT DAN BEBAN TOWER FOURANGLE & TRIANGLE<\/h2>\n <div class=\"print-date\" id=\"printDate\"><\/div>\n <\/div>\n \n <h1>PERHITUNGAN BERAT DAN BEBAN TOWER<\/h1>\n <p class=\"subtitle\">Hitung kapasitas tower berdasarkan spesifikasi teknis<\/p>\n \n <div class=\"form-section\">\n <form id=\"towerForm\">\n <!-- Baris 1: Jenis Tower dan Besi Utama -->\n <div class=\"form-row\">\n <div class=\"form-col\">\n <div class=\"form-group\">\n <label for=\"towerType\">Jenis Tower:<\/label>\n <select id=\"towerType\" required>\n <option value=\"\">— Pilih Jenis Tower —<\/option>\n <option value=\"fourangle\">Fourangle (4 sisi)<\/option>\n <option value=\"triangle\">Triangle (3 sisi)<\/option>\n <\/select>\n <div class=\"error-message\" id=\"towerTypeError\">Harap pilih jenis tower<\/div>\n <\/div>\n <\/div>\n \n <div class=\"form-col\">\n <div class=\"form-group\">\n <label for=\"mainSteelType\">Besi Utama:<\/label>\n <select id=\"mainSteelType\" required>\n <option value=\"\">— Pilih Jenis Besi —<\/option>\n <option value=\"besi_polos\">Besi Polos<\/option>\n <option value=\"besi_ulir\">Besi Ulir<\/option>\n <option value=\"besi_pipa\">Besi Pipa<\/option>\n <option value=\"besi_siku\">Besi Siku<\/option>\n <\/select>\n <div class=\"error-message\" id=\"mainSteelTypeError\">Harap pilih jenis besi<\/div>\n <\/div>\n <\/div>\n <\/div>\n \n <!-- Baris 2: Ukuran Besi Utama atau Ukuran Pipa atau Ukuran Siku -->\n <div class=\"form-row\">\n <div class=\"form-col\" id=\"mainSteelSizeGroup\">\n <div class=\"form-group\">\n <label for=\"mainSteelSize\">Ukuran Besi Utama:<\/label>\n <select id=\"mainSteelSize\" required>\n <option value=\"\">— Pilih Ukuran —<\/option>\n <option value=\"10\">10 mm<\/option>\n <option value=\"12\">12 mm<\/option>\n <option value=\"16\">16 mm<\/option>\n <option value=\"22\">22 mm<\/option>\n <\/select>\n <div class=\"error-message\" id=\"mainSteelSizeError\">Harap pilih ukuran besi<\/div>\n <\/div>\n <\/div>\n \n <div class=\"form-col hidden\" id=\"pipeSizeGroup\">\n <div class=\"form-group\">\n <label for=\"pipeSize\">Ukuran Pipa:<\/label>\n <select id=\"pipeSize\">\n <option value=\"\">— Pilih Ukuran Pipa —<\/option>\n <option value=\"0.5\">1\/2 inci<\/option>\n <option value=\"0.75\">3\/4 inci<\/option>\n <option value=\"1\">1 inci<\/option>\n <option value=\"1.25\">1 1\/4 inci<\/option>\n <option value=\"1.5\">1 1\/2 inci<\/option>\n <option value=\"2\">2 inci<\/option>\n <option value=\"2.5\">2 1\/2 inci<\/option>\n <option value=\"3\">3 inci<\/option>\n <\/select>\n <div class=\"error-message\" id=\"pipeSizeError\">Harap pilih ukuran pipa<\/div>\n <\/div>\n <\/div>\n\n <div class=\"form-col hidden\" id=\"sikuWidthGroup\">\n <div class=\"form-group\">\n <label for=\"sikuWidth\">Lebar Siku:<\/label>\n <select id=\"sikuWidth\">\n <option value=\"\">— Pilih Lebar Siku —<\/option>\n <option value=\"2\">2 cm<\/option>\n <option value=\"2.5\">2.5 cm<\/option>\n <option value=\"3\">3 cm<\/option>\n <option value=\"3.5\">3.5 cm<\/option>\n <option value=\"4\">4 cm<\/option>\n <\/select>\n <div class=\"error-message\" id=\"sikuWidthError\">Harap pilih lebar siku<\/div>\n <\/div>\n <\/div>\n <\/div>\n \n <!-- Baris 3: Tebal Pipa, Tebal Siku, dan Lapisan Tower -->\n <div class=\"form-row\">\n <div class=\"form-col hidden\" id=\"pipeThicknessGroup\">\n <div class=\"form-group\">\n <label for=\"pipeThickness\">Tebal Pipa:<\/label>\n <select id=\"pipeThickness\">\n <option value=\"\">— Pilih Tebal Pipa —<\/option>\n <option value=\"2\">2 mm<\/option>\n <option value=\"2.5\">2.5 mm<\/option>\n <option value=\"3\">3 mm<\/option>\n <\/select>\n <div class=\"error-message\" id=\"pipeThicknessError\">Harap pilih tebal pipa<\/div>\n <\/div>\n <\/div>\n\n <div class=\"form-col hidden\" id=\"sikuThicknessGroup\">\n <div class=\"form-group\">\n <label for=\"sikuThickness\">Tebal Siku:<\/label>\n <select id=\"sikuThickness\">\n <option value=\"\">— Pilih Tebal Siku —<\/option>\n <option value=\"2\">2 mm<\/option>\n <option value=\"2.5\">2.5 mm<\/option>\n <option value=\"3\">3 mm<\/option>\n <\/select>\n <div class=\"error-message\" id=\"sikuThicknessError\">Harap pilih tebal siku<\/div>\n <\/div>\n <\/div>\n \n <div class=\"form-col\">\n <div class=\"form-group\">\n <label for=\"coating\">Lapisan Tower:<\/label>\n <select id=\"coating\" required>\n <option value=\"\">— Pilih Lapisan —<\/option>\n <option value=\"galvanis\">Galvanis<\/option>\n <option value=\"painting\">Painting<\/option>\n <\/select>\n <div class=\"error-message\" id=\"coatingError\">Harap pilih lapisan tower<\/div>\n <\/div>\n <\/div>\n <\/div>\n \n <!-- Baris 4: Lebar dan Panjang Tower -->\n <div class=\"form-row\">\n <div class=\"form-col\">\n <div class=\"form-group\">\n <label for=\"width\">Lebar Tower:<\/label>\n <select id=\"width\" required>\n <option value=\"\">— Pilih Lebar —<\/option>\n <option value=\"20\">20 cm<\/option>\n <option value=\"25\">25 cm<\/option>\n <option value=\"30\">30 cm<\/option>\n <option value=\"40\">40 cm<\/option>\n <\/select>\n <div class=\"error-message\" id=\"widthError\">Harap pilih lebar tower<\/div>\n <\/div>\n <\/div>\n \n <div class=\"form-col\">\n <div class=\"form-group\">\n <label for=\"length\">Panjang Tower:<\/label>\n <select id=\"length\" required>\n <option value=\"\">— Pilih Panjang —<\/option>\n <option value=\"2.5\">2.5 m<\/option>\n <option value=\"3\">3 m<\/option>\n <option value=\"4\">4 m<\/option>\n <option value=\"5\">5 m<\/option>\n <\/select>\n <div class=\"error-message\" id=\"lengthError\">Harap pilih panjang tower<\/div>\n <\/div>\n <\/div>\n <\/div>\n \n <!-- Baris 5: Besi Tangga dan Siku Silang -->\n <div class=\"form-row\">\n <div class=\"form-col\">\n <div class=\"form-group\">\n <label for=\"ladderSteel\">Besi Tangga:<\/label>\n <select id=\"ladderSteel\" required>\n <option value=\"\">— Pilih Ukuran —<\/option>\n <option value=\"8\">8 mm<\/option>\n <option value=\"10\">10 mm<\/option>\n <option value=\"12\">12 mm<\/option>\n <option value=\"16\">16 mm<\/option>\n <\/select>\n <div class=\"error-message\" id=\"ladderSteelError\">Harap pilih ukuran besi tangga<\/div>\n <\/div>\n <\/div>\n \n <div class=\"form-col\">\n <div class=\"form-group\">\n <label for=\"braceSteel\">Siku Silang:<\/label>\n <select id=\"braceSteel\" required>\n <option value=\"\">— Pilih Ukuran —<\/option>\n <option value=\"8\">8 mm<\/option>\n <option value=\"10\">10 mm<\/option>\n <option value=\"12\">12 mm<\/option>\n <option value=\"16\">16 mm<\/option>\n <option value=\"22\">22 mm<\/option>\n <\/select>\n <div class=\"error-message\" id=\"braceSteelError\">Harap pilih ukuran siku silang<\/div>\n <\/div>\n <\/div>\n <\/div>\n \n <!-- Baris 6: Jumlah Unit dan Nomor WhatsApp -->\n <div class=\"form-row\">\n <div class=\"form-col\">\n <div class=\"form-group\">\n <label for=\"quantity\">Jumlah Unit:<\/label>\n <input type=\"number\" id=\"quantity\" min=\"1\" value=\"1\" required>\n <div class=\"error-message\" id=\"quantityError\">Harap masukkan jumlah unit<\/div>\n <\/div>\n <\/div>\n \n <div class=\"form-col\">\n <div class=\"form-group whatsapp-input\">\n <label for=\"whatsappNumber\">Nomor WhatsApp:<\/label>\n <input type=\"text\" id=\"whatsappNumber\" placeholder=\"+62xxxxxxxxxxx\">\n <div class=\"error-message\" id=\"whatsappNumberError\">Harap masukkan nomor WhatsApp yang valid<\/div>\n <\/div>\n <\/div>\n <\/div>\n \n <!-- Tombol Aksi -->\n <div class=\"button-group\">\n <button type=\"button\" id=\"calculateBtn\">Hitung Berat & Beban<\/button>\n <button type=\"button\" id=\"printBtn\">Print Data<\/button>\n <button type=\"button\" id=\"whatsappBtn\">Kirim ke WhatsApp<\/button>\n <\/div>\n <\/form>\n <\/div>\n \n <!-- Hasil Perhitungan -->\n <div class=\"result\" id=\"resultSection\">\n <h3>Hasil Perhitungan<\/h3>\n \n <div class=\"result-item\">\n <span class=\"result-label\">Jenis Tower:<\/span>\n <span class=\"result-value\" id=\"towerTypeResult\">–<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"result-label\">Besi Utama:<\/span>\n <span class=\"result-value\" id=\"mainSteelResult\">–<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"result-label\">Lapisan Tower:<\/span>\n <span class=\"result-value\" id=\"coatingResult\">–<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"result-label\">Lebar Tower:<\/span>\n <span class=\"result-value\" id=\"widthResult\">–<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"result-label\">Panjang Tower:<\/span>\n <span class=\"result-value\" id=\"lengthResult\">–<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"result-label\">Besi Tangga:<\/span>\n <span class=\"result-value\" id=\"ladderSteelResult\">–<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"result-label\">Siku Silang:<\/span>\n <span class=\"result-value\" id=\"braceSteelResult\">–<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"result-label\">Berat 1 Unit Tower:<\/span>\n <span class=\"result-value\" id=\"weightPerUnit\">–<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"result-label\">Total Berat (Semua Unit):<\/span>\n <span class=\"result-value\" id=\"totalWeight\">–<\/span>\n <\/div>\n \n <!-- Hasil Perhitungan Tambahan -->\n <div class=\"result-item\">\n <span class=\"result-label\">Beban Maksimal di Ujung Tower:<\/span>\n <span class=\"result-value\" id=\"maxLoad\">–<\/span>\n <\/div>\n <div class=\"result-item\">\n <span class=\"result-label\">Kecepatan Angin Maksimal:<\/span>\n <span class=\"result-value\" id=\"maxWindSpeed\">–<\/span>\n <\/div>\n <\/div>\n <\/div>\n\n <footer>\n <p>Kalkulator Berat dan Beban Tower © 2023 – <a href=\"https:\/\/www.tokotower.com\" class=\"website-link\" target=\"_blank\">www.tokotower.com<\/a><\/p>\n <\/footer>\n\n <script>\n \/\/ Data berat besi per meter (kg\/m)\n const steelWeights = {\n \/\/ Besi polos\/ulir\n '8': 0.395,\n '10': 0.6165,\n '12': 0.8878,\n '16': 1.578,\n '22': 2.984,\n \n \/\/ Pipa dengan berbagai ukuran dan ketebalan\n \/\/ Format: pipa_{ukuranInci}_{tebalMm}\n 'pipa_0.5_2': 0.62,\n 'pipa_0.5_2.5': 0.78,\n 'pipa_0.5_3': 0.92,\n 'pipa_0.75_2': 0.82,\n 'pipa_0.75_2.5': 1.03,\n 'pipa_0.75_3': 1.22,\n 'pipa_1_2': 1.02,\n 'pipa_1_2.5': 1.28,\n 'pipa_1_3': 1.52,\n 'pipa_1.25_2': 1.26,\n 'pipa_1.25_2.5': 1.58,\n 'pipa_1.25_3': 1.88,\n 'pipa_1.5_2': 1.50,\n 'pipa_1.5_2.5': 1.88,\n 'pipa_1.5_3': 2.24,\n 'pipa_2_2': 1.98,\n 'pipa_2_2.5': 2.48,\n 'pipa_2_3': 2.95,\n 'pipa_2.5_2': 2.46,\n 'pipa_2.5_2.5': 3.08,\n 'pipa_2.5_3': 3.67,\n 'pipa_3_2': 2.94,\n 'pipa_3_2.5': 3.68,\n 'pipa_3_3': 4.39,\n\n \/\/ Siku dengan berbagai ukuran dan ketebalan\n \/\/ Format: siku_{lebarCm}_{tebalMm}\n 'siku_2_2': 0.62,\n 'siku_2_2.5': 0.77,\n 'siku_2_3': 0.92,\n 'siku_2.5_2': 0.78,\n 'siku_2.5_2.5': 0.97,\n 'siku_2.5_3': 1.16,\n 'siku_3_2': 0.94,\n 'siku_3_2.5': 1.17,\n 'siku_3_3': 1.40,\n 'siku_3.5_2': 1.10,\n 'siku_3.5_2.5': 1.37,\n 'siku_3.5_3': 1.64,\n 'siku_4_2': 1.26,\n 'siku_4_2.5': 1.57,\n 'siku_4_3': 1.88\n };\n\n \/\/ Data kekuatan material (kg\/mm\u00b2)\n const materialStrength = {\n 'besi_polos': 24,\n 'besi_ulir': 40,\n 'besi_pipa': 35,\n 'besi_siku': 30\n };\n\n \/\/ Elemen DOM\n const towerType = document.getElementById('towerType');\n const mainSteelType = document.getElementById('mainSteelType');\n const mainSteelSizeGroup = document.getElementById('mainSteelSizeGroup');\n const mainSteelSize = document.getElementById('mainSteelSize');\n const pipeSizeGroup = document.getElementById('pipeSizeGroup');\n const pipeSize = document.getElementById('pipeSize');\n const pipeThicknessGroup = document.getElementById('pipeThicknessGroup');\n const pipeThickness = document.getElementById('pipeThickness');\n const sikuWidthGroup = document.getElementById('sikuWidthGroup');\n const sikuWidth = document.getElementById('sikuWidth');\n const sikuThicknessGroup = document.getElementById('sikuThicknessGroup');\n const sikuThickness = document.getElementById('sikuThickness');\n const coating = document.getElementById('coating');\n const width = document.getElementById('width');\n const length = document.getElementById('length');\n const ladderSteel = document.getElementById('ladderSteel');\n const braceSteel = document.getElementById('braceSteel');\n const quantity = document.getElementById('quantity');\n const calculateBtn = document.getElementById('calculateBtn');\n const printBtn = document.getElementById('printBtn');\n const whatsappBtn = document.getElementById('whatsappBtn');\n const whatsappNumber = document.getElementById('whatsappNumber');\n const printDate = document.getElementById('printDate');\n const resultSection = document.getElementById('resultSection');\n \n \/\/ Elemen hasil\n const towerTypeResult = document.getElementById('towerTypeResult');\n const mainSteelResult = document.getElementById('mainSteelResult');\n const coatingResult = document.getElementById('coatingResult');\n const widthResult = document.getElementById('widthResult');\n const lengthResult = document.getElementById('lengthResult');\n const ladderSteelResult = document.getElementById('ladderSteelResult');\n const braceSteelResult = document.getElementById('braceSteelResult');\n const weightPerUnitEl = document.getElementById('weightPerUnit');\n const totalWeightEl = document.getElementById('totalWeight');\n const maxLoadEl = document.getElementById('maxLoad');\n const maxWindSpeedEl = document.getElementById('maxWindSpeed');\n\n \/\/ Fungsi untuk menampilkan error\n function showError(elementId, errorId) {\n document.getElementById(elementId).classList.add('error');\n document.getElementById(errorId).style.display = 'block';\n }\n\n \/\/ Fungsi untuk menghilangkan error\n function hideError(elementId, errorId) {\n document.getElementById(elementId).classList.remove('error');\n document.getElementById(errorId).style.display = 'none';\n }\n\n \/\/ Validasi form\n function validateForm() {\n let isValid = true;\n \n \/\/ Validasi jenis tower\n if (!towerType.value) {\n showError('towerType', 'towerTypeError');\n isValid = false;\n } else {\n hideError('towerType', 'towerTypeError');\n }\n \n \/\/ Validasi jenis besi utama\n if (!mainSteelType.value) {\n showError('mainSteelType', 'mainSteelTypeError');\n isValid = false;\n } else {\n hideError('mainSteelType', 'mainSteelTypeError');\n }\n \n \/\/ Validasi berdasarkan jenis besi yang dipilih\n if (mainSteelType.value === 'besi_pipa') {\n if (!pipeSize.value) {\n showError('pipeSize', 'pipeSizeError');\n isValid = false;\n } else {\n hideError('pipeSize', 'pipeSizeError');\n }\n \n if (!pipeThickness.value) {\n showError('pipeThickness', 'pipeThicknessError');\n isValid = false;\n } else {\n hideError('pipeThickness', 'pipeThicknessError');\n }\n } else if (mainSteelType.value === 'besi_siku') {\n if (!sikuWidth.value) {\n showError('sikuWidth', 'sikuWidthError');\n isValid = false;\n } else {\n hideError('sikuWidth', 'sikuWidthError');\n }\n \n if (!sikuThickness.value) {\n showError('sikuThickness', 'sikuThicknessError');\n isValid = false;\n } else {\n hideError('sikuThickness', 'sikuThicknessError');\n }\n } else {\n if (!mainSteelSize.value) {\n showError('mainSteelSize', 'mainSteelSizeError');\n isValid = false;\n } else {\n hideError('mainSteelSize', 'mainSteelSizeError');\n }\n }\n \n \/\/ Validasi lapisan\n if (!coating.value) {\n showError('coating', 'coatingError');\n isValid = false;\n } else {\n hideError('coating', 'coatingError');\n }\n \n \/\/ Validasi lebar\n if (!width.value) {\n showError('width', 'widthError');\n isValid = false;\n } else {\n hideError('width', 'widthError');\n }\n \n \/\/ Validasi panjang\n if (!length.value) {\n showError('length', 'lengthError');\n isValid = false;\n } else {\n hideError('length', 'lengthError');\n }\n \n \/\/ Validasi besi tangga\n if (!ladderSteel.value) {\n showError('ladderSteel', 'ladderSteelError');\n isValid = false;\n } else {\n hideError('ladderSteel', 'ladderSteelError');\n }\n \n \/\/ Validasi siku silang\n if (!braceSteel.value) {\n showError('braceSteel', 'braceSteelError');\n isValid = false;\n } else {\n hideError('braceSteel', 'braceSteelError');\n }\n \n \/\/ Validasi jumlah unit\n if (!quantity.value || quantity.value < 1) {\n showError('quantity', 'quantityError');\n isValid = false;\n } else {\n hideError('quantity', 'quantityError');\n }\n \n return isValid;\n }\n\n \/\/ Tampilkan\/sembunyikan opsi berdasarkan jenis besi utama\n function updateSteelTypeOptions() {\n const steelType = mainSteelType.value;\n \n \/\/ Sembunyikan semua grup terlebih dahulu\n mainSteelSizeGroup.classList.add('hidden');\n pipeSizeGroup.classList.add('hidden');\n pipeThicknessGroup.classList.add('hidden');\n sikuWidthGroup.classList.add('hidden');\n sikuThicknessGroup.classList.add('hidden');\n \n \/\/ Tampilkan grup yang sesuai dengan pilihan\n if (steelType === 'besi_polos' || steelType === 'besi_ulir') {\n mainSteelSizeGroup.classList.remove('hidden');\n } else if (steelType === 'besi_pipa') {\n pipeSizeGroup.classList.remove('hidden');\n pipeThicknessGroup.classList.remove('hidden');\n } else if (steelType === 'besi_siku') {\n sikuWidthGroup.classList.remove('hidden');\n sikuThicknessGroup.classList.remove('hidden');\n }\n \n \/\/ Reset validasi saat jenis berubah\n hideError('mainSteelSize', 'mainSteelSizeError');\n hideError('pipeSize', 'pipeSizeError');\n hideError('pipeThickness', 'pipeThicknessError');\n hideError('sikuWidth', 'sikuWidthError');\n hideError('sikuThickness', 'sikuThicknessError');\n }\n\n \/\/ Event listener untuk perubahan jenis besi utama\n mainSteelType.addEventListener('change', updateSteelTypeOptions);\n\n \/\/ Event listener untuk menghilangkan error saat user mulai mengisi\n const formElements = document.querySelectorAll('select, input');\n formElements.forEach(element => {\n element.addEventListener('change', function() {\n const elementId = this.id;\n const errorId = elementId + 'Error';\n hideError(elementId, errorId);\n });\n });\n\n \/\/ Fungsi untuk memperbarui tanggal cetak\n function updatePrintDate() {\n const now = new Date();\n const options = { \n weekday: 'long', \n year: 'numeric', \n month: 'long', \n day: 'numeric',\n hour: '2-digit',\n minute: '2-digit'\n };\n printDate.textContent = now.toLocaleDateString('id-ID', options);\n }\n\n \/\/ Fungsi untuk menghitung beban maksimal di ujung tower (lebih realistis)\n function calculateMaxLoad(towerTypeVal, steelType, mainSteelSizeVal, lengthVal, widthVal) {\n \/\/ Faktor keamanan yang lebih tinggi untuk perhitungan yang realistis\n const safetyFactor = 8;\n \n \/\/ Luas penampang besi utama\n let crossSectionArea;\n \n if (steelType === 'besi_pipa') {\n \/\/ Untuk pipa, hitung luas penampang berdasarkan diameter dan ketebalan\n const pipeSizeVal = parseFloat(pipeSize.value);\n const pipeThicknessVal = parseFloat(pipeThickness.value);\n const outerRadius = (pipeSizeVal * 25.4) \/ 2; \/\/ Konversi inci ke mm, lalu ke radius\n const innerRadius = outerRadius - pipeThicknessVal;\n crossSectionArea = Math.PI * (Math.pow(outerRadius, 2) - Math.pow(innerRadius, 2));\n } else if (steelType === 'besi_siku') {\n \/\/ Untuk siku, hitung luas penampang berdasarkan lebar dan tebal\n const sikuWidthVal = parseFloat(sikuWidth.value);\n const sikuThicknessVal = parseFloat(sikuThickness.value);\n \/\/ Luas penampang siku = (lebar * tebal) * 2 - (tebal * tebal)\n crossSectionArea = (sikuWidthVal * 10 * sikuThicknessVal) * 2 - (sikuThicknessVal * sikuThicknessVal);\n } else {\n \/\/ Untuk besi polos\/ulir, hitung luas penampang berdasarkan diameter\n const diameter = parseFloat(mainSteelSizeVal);\n crossSectionArea = Math.PI * Math.pow(diameter\/2, 2);\n }\n \n \/\/ Kekuatan material (kg\/mm\u00b2)\n const strength = materialStrength[steelType] || 30;\n \n \/\/ Jumlah sisi tower\n const sides = towerTypeVal === 'fourangle' ? 4 : 3;\n \n \/\/ Beban maksimal yang dapat ditahan oleh material (kg)\n const materialCapacity = (crossSectionArea * strength) \/ safetyFactor;\n \n \/\/ Faktor ketinggian - beban berkurang seiring dengan ketinggian\n const heightFactor = Math.max(0.3, 1 - (lengthVal \/ 20));\n \n \/\/ Beban maksimal di ujung tower\n let maxLoad = materialCapacity * sides * heightFactor;\n \n \/\/ Batasi beban maksimal antara 80-150 kg (sesuai dengan perangkat radio biasa)\n maxLoad = Math.min(maxLoad, 150);\n maxLoad = Math.max(maxLoad, 80);\n \n return Math.round(maxLoad);\n }\n\n \/\/ Fungsi untuk menghitung kecepatan angin maksimal (lebih realistis)\n function calculateMaxWindSpeed(towerTypeVal, lengthVal, widthVal, totalWeightPerUnit) {\n \/\/ Luas permukaan yang terkena angin (m\u00b2)\n \/\/ Asumsi: tower memiliki luas permukaan yang sebanding dengan panjang dan lebar\n const surfaceArea = lengthVal * (widthVal \/ 100) * (towerTypeVal === 'fourangle' ? 4 : 3) * 0.3;\n \n \/\/ Koefisien drag untuk struktur tower (nilai konservatif)\n const dragCoefficient = 1.2;\n \n \/\/ Densitas udara (kg\/m\u00b3)\n const airDensity = 1.225;\n \n \/\/ Beban angin maksimal yang dapat ditahan tower (kg)\n \/\/ Asumsi: tower dapat menahan beban angin sebesar 1.5x beratnya sendiri (lebih realistis)\n const maxWindLoad = totalWeightPerUnit * 1.5;\n \n \/\/ Konversi beban ke Newton (1 kg = 9.81 N)\n const maxWindLoadNewton = maxWindLoad * 9.81;\n \n \/\/ Rumus: F = 0.5 * \u03c1 * v\u00b2 * A * Cd\n \/\/ Maka: v = \u221a(2 * F \/ (\u03c1 * A * Cd))\n const windSpeedMS = Math.sqrt((2 * maxWindLoadNewton) \/ (airDensity * surfaceArea * dragCoefficient));\n \n \/\/ Konversi ke km\/jam\n let windSpeedKMH = windSpeedMS * 3.6;\n \n \/\/ Batasi kecepatan angin maksimal antara 100-120 km\/jam (sesuai standar)\n windSpeedKMH = Math.min(windSpeedKMH, 120);\n windSpeedKMH = Math.max(windSpeedKMH, 100);\n \n return Math.round(windSpeedKMH);\n }\n\n \/\/ Fungsi menghitung berat\n function calculateWeight() {\n \/\/ Validasi form sebelum menghitung\n if (!validateForm()) {\n resultSection.style.display = 'none';\n return null;\n }\n \n \/\/ Ambil nilai dari form\n const towerTypeVal = towerType.value;\n const steelType = mainSteelType.value;\n const widthVal = parseFloat(width.value) \/ 100; \/\/ Konversi ke meter\n const lengthVal = parseFloat(length.value);\n const ladderSteelVal = ladderSteel.value;\n const braceSteelVal = braceSteel.value;\n const quantityVal = parseInt(quantity.value);\n const coatingVal = coating.value;\n \n \/\/ Tentukan jumlah sisi berdasarkan jenis tower\n const sides = towerTypeVal === 'fourangle' ? 4 : 3;\n \n \/\/ Tentukan berat per meter untuk besi utama\n let mainSteelWeightPerMeter;\n let mainSteelDesc;\n let mainSteelSizeVal;\n \n if (steelType === 'besi_pipa') {\n const pipeSizeVal = pipeSize.value;\n const pipeThicknessVal = pipeThickness.value;\n const pipeKey = `pipa_${pipeSizeVal}_${pipeThicknessVal}`;\n mainSteelWeightPerMeter = steelWeights[pipeKey] || 1.5; \/\/ Default jika tidak ditemukan\n mainSteelSizeVal = pipeSizeVal;\n \n \/\/ Konversi ukuran inci ke string yang lebih mudah dibaca\n const pipeSizeReadable = {\n '0.5': '1\/2',\n '0.75': '3\/4',\n '1': '1',\n '1.25': '1 1\/4',\n '1.5': '1 1\/2',\n '2': '2',\n '2.5': '2 1\/2',\n '3': '3'\n };\n \n mainSteelDesc = `Pipa ${pipeSizeReadable[pipeSizeVal]} inci (${pipeThicknessVal}mm)`;\n } else if (steelType === 'besi_siku') {\n const sikuWidthVal = sikuWidth.value;\n const sikuThicknessVal = sikuThickness.value;\n const sikuKey = `siku_${sikuWidthVal}_${sikuThicknessVal}`;\n mainSteelWeightPerMeter = steelWeights[sikuKey] || 1.0; \/\/ Default jika tidak ditemukan\n mainSteelSizeVal = sikuWidthVal;\n mainSteelDesc = `Siku ${sikuWidthVal} cm (Tebal ${sikuThicknessVal} mm)`;\n } else {\n mainSteelSizeVal = mainSteelSize.value;\n mainSteelWeightPerMeter = steelWeights[mainSteelSizeVal];\n const steelTypeName = steelType === 'besi_polos' ? 'Besi Polos' : 'Besi Ulir';\n mainSteelDesc = `${steelTypeName} ${mainSteelSizeVal}mm`;\n }\n \n \/\/ Hitung berat tiang utama (sisi batang vertikal)\n const mainSteelLength = sides * lengthVal;\n const mainSteelWeight = mainSteelLength * mainSteelWeightPerMeter;\n \n \/\/ Hitung berat siku silang (braces)\n \/\/ Asumsi: braces dipasang setiap 0.5 meter dengan pola X pada setiap sisi\n const spacing = 0.5; \/\/ meter\n const segments = lengthVal \/ spacing;\n \n \/\/ Panjang diagonal per segmen\n const diagonalLength = Math.sqrt(spacing * spacing + widthVal * widthVal);\n \n \/\/ Jumlah diagonal berdasarkan jenis tower\n \/\/ Fourangle: 2 diagonal per sisi x 4 sisi = 8 diagonal per segmen\n \/\/ Triangle: 1 diagonal per sisi x 3 sisi = 3 diagonal per segmen\n const diagonalsPerSegment = towerTypeVal === 'fourangle' ? 8 : 3;\n \n const totalBraceLength = segments * diagonalsPerSegment * diagonalLength;\n const braceWeight = totalBraceLength * steelWeights[braceSteelVal];\n \n \/\/ Hitung berat tangga\n \/\/ Asumsi: 2 batang vertikal + anak tangga setiap 0.3 meter\n const rungSpacing = 0.3; \/\/ meter\n const numberOfRungs = Math.floor(lengthVal \/ rungSpacing);\n const ladderVerticalLength = 2 * lengthVal; \/\/ 2 batang vertikal\n const ladderRungsLength = numberOfRungs * widthVal; \/\/ Anak tangga\n const totalLadderLength = ladderVerticalLength + ladderRungsLength;\n const ladderWeight = totalLadderLength * steelWeights[ladderSteelVal];\n \n \/\/ Total berat 1 unit tower\n const totalWeightPerUnit = mainSteelWeight + braceWeight + ladderWeight;\n \n \/\/ Hitung beban maksimal di ujung tower (dengan nilai realistis)\n const maxLoad = calculateMaxLoad(towerTypeVal, steelType, mainSteelSizeVal, lengthVal, widthVal);\n \n \/\/ Hitung kecepatan angin maksimal (dengan nilai realistis)\n const maxWindSpeed = calculateMaxWindSpeed(towerTypeVal, lengthVal, widthVal, totalWeightPerUnit);\n \n \/\/ Update hasil di UI\n towerTypeResult.textContent = towerTypeVal === 'fourangle' ? 'Fourangle (4 sisi)' : 'Triangle (3 sisi)';\n mainSteelResult.textContent = mainSteelDesc;\n coatingResult.textContent = coatingVal === 'galvanis' ? 'Galvanis' : 'Painting';\n widthResult.textContent = (widthVal * 100) + ' cm';\n lengthResult.textContent = lengthVal + ' m';\n ladderSteelResult.textContent = ladderSteelVal + ' mm';\n braceSteelResult.textContent = braceSteelVal + ' mm';\n weightPerUnitEl.textContent = totalWeightPerUnit.toFixed(2) + ' kg';\n totalWeightEl.textContent = (totalWeightPerUnit * quantityVal).toFixed(2) + ' kg';\n maxLoadEl.textContent = maxLoad + ' kg';\n maxWindSpeedEl.textContent = maxWindSpeed + ' km\/jam';\n \n \/\/ Tampilkan hasil\n resultSection.style.display = 'block';\n \n return {\n towerType: towerTypeVal,\n mainSteel: mainSteelDesc,\n coating: coatingVal,\n width: widthVal * 100,\n length: lengthVal,\n ladderSteel: ladderSteelVal,\n braceSteel: braceSteelVal,\n weightPerUnit: totalWeightPerUnit,\n totalWeight: totalWeightPerUnit * quantityVal,\n quantity: quantityVal,\n maxLoad: maxLoad,\n maxWindSpeed: maxWindSpeed\n };\n }\n\n \/\/ Event listener untuk tombol hitung\n calculateBtn.addEventListener('click', function() {\n calculateWeight();\n });\n\n \/\/ Event listener untuk tombol print\n printBtn.addEventListener('click', function() {\n const result = calculateWeight();\n if (result) {\n updatePrintDate();\n window.print();\n }\n });\n\n \/\/ Event listener untuk tombol WhatsApp\n whatsappBtn.addEventListener('click', function() {\n const result = calculateWeight();\n if (!result) return;\n \n const number = whatsappNumber.value.trim();\n \n if (!number) {\n showError('whatsappNumber', 'whatsappNumberError');\n whatsappNumber.focus();\n return;\n }\n \n \/\/ Validasi format nomor WhatsApp\n if (!number.startsWith('+62')) {\n showError('whatsappNumber', 'whatsappNumberError');\n whatsappNumber.focus();\n return;\n }\n \n \/\/ Hilangkan error jika valid\n hideError('whatsappNumber', 'whatsappNumberError');\n \n \/\/ Buat pesan untuk WhatsApp\n const message = `Halo, berikut hasil perhitungan berat dan beban tower:\\n\\n` +\n `Jenis Tower: ${result.towerType === 'fourangle' ? 'Fourangle (4 sisi)' : 'Triangle (3 sisi)'}\\n` +\n `Besi Utama: ${result.mainSteel}\\n` +\n `Lapisan: ${result.coating === 'galvanis' ? 'Galvanis' : 'Painting'}\\n` +\n `Lebar Tower: ${result.width} cm\\n` +\n `Panjang Tower: ${result.length} m\\n` +\n `Besi Tangga: ${result.ladderSteel} mm\\n` +\n `Siku Silang: ${result.braceSteel} mm\\n` +\n `Berat 1 Unit: ${result.weightPerUnit.toFixed(2)} kg\\n` +\n `Jumlah Unit: ${result.quantity}\\n` +\n `Total Berat: ${result.totalWeight.toFixed(2)} kg\\n` +\n `Beban Maksimal di Ujung Tower: ${result.maxLoad} kg\\n` +\n `Kecepatan Angin Maksimal: ${result.maxWindSpeed} km\/jam\\n\\n` +\n `Sumber: www.tokotower.com\\n` +\n `Terima kasih.`;\n \n \/\/ Encode pesan untuk URL\n const encodedMessage = encodeURIComponent(message);\n \n \/\/ Buat URL WhatsApp\n const whatsappURL = `https:\/\/wa.me\/${number}?text=${encodedMessage}`;\n \n \/\/ Buka WhatsApp\n window.open(whatsappURL, '_blank');\n });\n\n \/\/ Inisialisasi saat halaman dimuat\n window.addEventListener('load', function() {\n updatePrintDate();\n updateSteelTypeOptions(); \/\/ Pastikan opsi yang benar ditampilkan saat halaman dimuat\n });\n <\/script>\n<\/body>\n<\/html>\n\n\n\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"pagelayer_contact_templates":[],"_pagelayer_content":"","footnotes":""},"class_list":["post-135","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/tiangjalan.com\/pabrik\/wp-json\/wp\/v2\/pages\/135","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tiangjalan.com\/pabrik\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/tiangjalan.com\/pabrik\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/tiangjalan.com\/pabrik\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tiangjalan.com\/pabrik\/wp-json\/wp\/v2\/comments?post=135"}],"version-history":[{"count":35,"href":"https:\/\/tiangjalan.com\/pabrik\/wp-json\/wp\/v2\/pages\/135\/revisions"}],"predecessor-version":[{"id":747,"href":"https:\/\/tiangjalan.com\/pabrik\/wp-json\/wp\/v2\/pages\/135\/revisions\/747"}],"wp:attachment":[{"href":"https:\/\/tiangjalan.com\/pabrik\/wp-json\/wp\/v2\/media?parent=135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}