{"id":272,"date":"2021-08-13T13:22:25","date_gmt":"2021-08-13T17:22:25","guid":{"rendered":"https:\/\/opentextbc.ca\/patterndevelopment\/part\/radial-line\/"},"modified":"2021-08-13T13:23:29","modified_gmt":"2021-08-13T17:23:29","slug":"radial-line","status":"publish","type":"part","link":"https:\/\/opentextbc.ca\/patterndevelopment\/part\/radial-line\/","title":{"raw":"Radial Line Pattern Development","rendered":"Radial Line Pattern Development"},"content":{"raw":"\nIn Parallel Line Pattern Development, we required parallel element line or bends. Some objects are of a conical shape and parallel line will not work on them. Rather, we will look at using <strong>Radial Line<\/strong> <strong>Pattern Development<\/strong>.\n\nIn radial line, we develop patterns for shapes that have a taper, all element lines (bends) must radiate back to a common point, a radius point. We need two things for this process to work:\n<ul>\n \t<li>A radius point that is on centre (right cone).<\/li>\n \t<li>A radius point that is within a reasonable distance.<\/li>\n<\/ul>\nSo, when we find ourselves determining if radial line will work, we look at those two things. If the cone is a scalene or oblique cone, it will not work. If a radius point is 40 feet away, it is not worth the effort with this process, another should be chosen, but if it will fit in our bench space, then it will work.\n\nBeing one of the simplest forms of layout, it allows us to create these patterns with accuracy and speed. If we can use radial line, it is an effective and efficient choice.\n<div class=\"textbox textbox--learning-objectives\"><header class=\"textbox__header\">\n<p class=\"textbox__title\">Learning Objectives<\/p>\n\n<\/header>\n<div class=\"textbox__content\">\n<ol>\n \t<li>Understand the process of Radial Line Pattern Development and its uses.<\/li>\n \t<li>Understand the language of Radial Line.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<div class=\"textbox textbox--key-takeaways\"><header class=\"textbox__header\">\n<p class=\"textbox__title\">Terms<\/p>\n\n<\/header>\n<div class=\"textbox__content\">\n<ol>\n \t<li><strong>Apex&nbsp;<\/strong>\u2013 the intersection point of a cone, as seen in the elevation view.<\/li>\n \t<li><strong>Slant Height (small or large)&nbsp;<\/strong>\u2013 the hypotenuse of a cone, outside edge. The slant height is always a true length in the elevation view.<\/li>\n \t<li><strong>Stretch-Out Angle\/Arc&nbsp;<\/strong>\u2013 the angle or arc which encompasses a radial line pattern.<\/li>\n \t<li><strong>Frustum&nbsp;<\/strong>\u2013 a cone with the top cut parallel to the base.<\/li>\n \t<li><strong>True length&nbsp;<\/strong>\u2013 a dimension or line that is not distorted by the view.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<h1>Basic Steps<\/h1>\n<ol>\n \t<li>Draw a full <strong>[pb_glossary id=\"499\"]elevation view[\/pb_glossary]<\/strong> and <strong>[pb_glossary id=\"477\"]plan view[\/pb_glossary]<\/strong> complete with all <strong>[pb_glossary id=\"507\"]element lines[\/pb_glossary]<\/strong>.<\/li>\n \t<li>Swing the <strong>[pb_glossary id=\"481\"]slant height[\/pb_glossary]<\/strong> with your compass. Remember, in the elevation view, the slant height&nbsp;is always a <strong>[pb_glossary id=\"476\"]true length[\/pb_glossary]<\/strong>. This arc is also called the <strong>[pb_glossary id=\"482\"]stretch-out arc[\/pb_glossary]<\/strong>.<\/li>\n \t<li>Make the length of the stretch-out arc equal to the distance\/<strong>[pb_glossary id=\"492\"]circumference[\/pb_glossary]<\/strong> of the base. There are many ways to accomplish this, but we will focus on the most common method, using step-offs.<\/li>\n<\/ol>\n<div class=\"textbox\">A step-off can come from calculating the circumference and dividing by 12 or simply set your compass to one of the profile divisions. Keep in mind that either way will have accuracy problems, it depends on how accurate the pattern must be. We will cover the most accurate method, layout by mathematics, in another unit later.<\/div>\n","rendered":"<p>In Parallel Line Pattern Development, we required parallel element line or bends. Some objects are of a conical shape and parallel line will not work on them. Rather, we will look at using <strong>Radial Line<\/strong> <strong>Pattern Development<\/strong>.<\/p>\n<p>In radial line, we develop patterns for shapes that have a taper, all element lines (bends) must radiate back to a common point, a radius point. We need two things for this process to work:<\/p>\n<ul>\n<li>A radius point that is on centre (right cone).<\/li>\n<li>A radius point that is within a reasonable distance.<\/li>\n<\/ul>\n<p>So, when we find ourselves determining if radial line will work, we look at those two things. If the cone is a scalene or oblique cone, it will not work. If a radius point is 40 feet away, it is not worth the effort with this process, another should be chosen, but if it will fit in our bench space, then it will work.<\/p>\n<p>Being one of the simplest forms of layout, it allows us to create these patterns with accuracy and speed. If we can use radial line, it is an effective and efficient choice.<\/p>\n<div class=\"textbox textbox--learning-objectives\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Learning Objectives<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<ol>\n<li>Understand the process of Radial Line Pattern Development and its uses.<\/li>\n<li>Understand the language of Radial Line.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<div class=\"textbox textbox--key-takeaways\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Terms<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<ol>\n<li><strong>Apex&nbsp;<\/strong>\u2013 the intersection point of a cone, as seen in the elevation view.<\/li>\n<li><strong>Slant Height (small or large)&nbsp;<\/strong>\u2013 the hypotenuse of a cone, outside edge. The slant height is always a true length in the elevation view.<\/li>\n<li><strong>Stretch-Out Angle\/Arc&nbsp;<\/strong>\u2013 the angle or arc which encompasses a radial line pattern.<\/li>\n<li><strong>Frustum&nbsp;<\/strong>\u2013 a cone with the top cut parallel to the base.<\/li>\n<li><strong>True length&nbsp;<\/strong>\u2013 a dimension or line that is not distorted by the view.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<h1>Basic Steps<\/h1>\n<ol>\n<li>Draw a full <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_272_499\">elevation view<\/a><\/strong> and <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_272_477\">plan view<\/a><\/strong> complete with all <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_272_507\">element lines<\/a><\/strong>.<\/li>\n<li>Swing the <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_272_481\">slant height<\/a><\/strong> with your compass. Remember, in the elevation view, the slant height&nbsp;is always a <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_272_476\">true length<\/a><\/strong>. This arc is also called the <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_272_482\">stretch-out arc<\/a><\/strong>.<\/li>\n<li>Make the length of the stretch-out arc equal to the distance\/<strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_272_492\">circumference<\/a><\/strong> of the base. There are many ways to accomplish this, but we will focus on the most common method, using step-offs.<\/li>\n<\/ol>\n<div class=\"textbox\">A step-off can come from calculating the circumference and dividing by 12 or simply set your compass to one of the profile divisions. Keep in mind that either way will have accuracy problems, it depends on how accurate the pattern must be. We will cover the most accurate method, layout by mathematics, in another unit later.<\/div>\n<div class=\"glossary\"><span class=\"screen-reader-text\" id=\"definition\">definition<\/span><template id=\"term_272_499\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_272_499\"><div tabindex=\"-1\"><p>looking at the front or side of something, to have elevation (height), 2D<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_272_477\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_272_477\"><div tabindex=\"-1\"><p>looking down at something, a \u201cbirds eye view\u201d, \u201cfloor plan\u201d (2D)<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_272_507\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_272_507\"><div tabindex=\"-1\"><p>a line representing an edge or bend<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_272_481\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_272_481\"><div tabindex=\"-1\"><p>the hypotenuse of a cone, outside edge. The slant height is always a true length in the elevation view<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_272_476\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_272_476\"><div tabindex=\"-1\"><p>a dimension or line that is not distorted by the view<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_272_482\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_272_482\"><div tabindex=\"-1\"><p>the angle or arc which encompasses a radial line pattern<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_272_492\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_272_492\"><div tabindex=\"-1\"><p>the distance around a circle, perimeter of a circle<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><\/div>","protected":false},"parent":0,"menu_order":3,"template":"","meta":{"pb_part_invisible":false,"pb_part_invisible_string":""},"contributor":[],"license":[],"class_list":["post-272","part","type-part","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/opentextbc.ca\/patterndevelopment\/wp-json\/pressbooks\/v2\/parts\/272","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opentextbc.ca\/patterndevelopment\/wp-json\/pressbooks\/v2\/parts"}],"about":[{"href":"https:\/\/opentextbc.ca\/patterndevelopment\/wp-json\/wp\/v2\/types\/part"}],"version-history":[{"count":1,"href":"https:\/\/opentextbc.ca\/patterndevelopment\/wp-json\/pressbooks\/v2\/parts\/272\/revisions"}],"predecessor-version":[{"id":546,"href":"https:\/\/opentextbc.ca\/patterndevelopment\/wp-json\/pressbooks\/v2\/parts\/272\/revisions\/546"}],"wp:attachment":[{"href":"https:\/\/opentextbc.ca\/patterndevelopment\/wp-json\/wp\/v2\/media?parent=272"}],"wp:term":[{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/opentextbc.ca\/patterndevelopment\/wp-json\/wp\/v2\/contributor?post=272"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/opentextbc.ca\/patterndevelopment\/wp-json\/wp\/v2\/license?post=272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}