{"id":801,"date":"2024-07-05T13:01:45","date_gmt":"2024-07-05T07:31:45","guid":{"rendered":"https:\/\/study.madeeasy.in\/?p=801"},"modified":"2025-07-16T14:58:32","modified_gmt":"2025-07-16T09:28:32","slug":"use-of-triangulation","status":"publish","type":"post","link":"https:\/\/www.madeeasy.in\/study\/ce\/surveying\/use-of-triangulation","title":{"rendered":"USE OF TRIANGULATION"},"content":{"rendered":"<p style=\"text-align: justify;\">Triangulation survey is conducted for one or more of following purposes:<\/p>\r\n<ul style=\"text-align: justify;\">\r\n<li>For establishing accurate ground control points for photogrammetric survey of large area.<\/li>\r\n<li>For determining the size and shape of earth by making observations for latitude, longitudinal gravity etc.<\/li>\r\n<li>To establish accurate horizontal control of various engineering projects.<\/li>\r\n<\/ul>\r\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_1 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.madeeasy.in\/study\/ce\/surveying\/use-of-triangulation\/#Steps-followed-in-Triangulation\" >Steps followed in Triangulation<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.madeeasy.in\/study\/ce\/surveying\/use-of-triangulation\/#TRIANGULATION-SYSTEM\" >TRIANGULATION SYSTEM<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Steps-followed-in-Triangulation\"><\/span>Steps followed in Triangulation<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p style=\"text-align: justify;\"><strong>Field work<\/strong><\/p>\r\n<ul style=\"text-align: justify;\">\r\n<li>Reconnaissance<\/li>\r\n<li>Establishment and preparation of triangulation stations<\/li>\r\n<li>Measurement of base line and check base<\/li>\r\n<li>Measurement of horizontal angles<\/li>\r\n<\/ul>\r\n<p style=\"text-align: justify;\"><strong>Office work<\/strong><\/p>\r\n<ul style=\"text-align: justify;\">\r\n<li>Specifications of stations and signals<\/li>\r\n<li>Necessary adjustments in observations<\/li>\r\n<li>Computations of lengths of sides<\/li>\r\n<li>Computations of bearings, latitudes and departures<\/li>\r\n<li>Computation of independent co-ordinates<\/li>\r\n<\/ul>\r\n<h4 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"TRIANGULATION-SYSTEM\"><\/span>TRIANGULATION SYSTEM<span class=\"ez-toc-section-end\"><\/span><\/h4>\r\n<ul style=\"text-align: justify;\">\r\n<li>A system consisting of triangulation stations connected by a chain of triangles is called as triangulation system or triangulation figure.<\/li>\r\n<li>Most commonly used figures in triangulation system are:<\/li>\r\n<\/ul>\r\n<p style=\"text-align: center;\">(a)\u00a0\u00a0\u00a0\u00a0 Triangles\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (b) Quadrilaterals\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (c) Polygons<\/p>\r\n<p style=\"text-align: justify;\">All these triangulation figures must satisfy the required geometrical conditions.<\/p>\r\n<ul>\r\n<li style=\"text-align: justify;\">But it is not possible to satisfy all the geometrical conditions due to errors involved in observations and calculations until the field measurements have been adjusted.<\/li>\r\n<\/ul>\r\n\r\n<p style=\"text-align: center;\"><a class=\"btn btn-danger\" role=\"button\" href=\"https:\/\/study.madeeasy.in\/ce\/surveying\/principle-of-triangulation\/\" target=\"_blank\" rel=\"noopener\">&lt;&lt; Previous<\/a> | <a class=\"btn btn-success\" role=\"button\" href=\"https:\/\/study.madeeasy.in\/ce\/surveying\/aerial-photograph\/\" target=\"_blank\" rel=\"noopener\"> Next &gt;&gt;<\/a> <br \/><strong> Must Read: <\/strong> <a href=\"https:\/\/study.madeeasy.in\/subjects\/what-is-surveying\/\" target=\"_blank\" rel=\"noopener\"><strong>What is Surveying?<\/strong><\/a><\/p>\r\n<p>&nbsp;<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>Triangulation survey is conducted for one or more of following purposes: For establishing accurate ground control points for photogrammetric survey<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[203,2],"tags":[275,276,277],"class_list":["post-801","post","type-post","status-publish","format-standard","hentry","category-surveying","category-ce","tag-field-work","tag-office-work","tag-triangulation-system"],"_links":{"self":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/801","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/comments?post=801"}],"version-history":[{"count":0,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/801\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/media?parent=801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/categories?post=801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/tags?post=801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}