{"id":32,"date":"2023-02-06T11:44:46","date_gmt":"2023-02-06T16:44:46","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/level2layout\/?post_type=chapter&p=32"},"modified":"2023-03-30T11:37:29","modified_gmt":"2023-03-30T15:37:29","slug":"drop-elbow","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/level2layout\/chapter\/drop-elbow\/","title":{"raw":"Drop Elbow","rendered":"Drop Elbow"},"content":{"raw":"https:\/\/www.youtube.com\/watch?v=ORXkm2EpmXM\r\n
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  1. Draw an elevation view<\/strong> of the flat radius throat radius heel (RTRH) cheek.<\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n\r\n \r\n
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    1. Bisect the heel and throat.<\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n\r\n \r\n
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      1. Label the elevation view<\/strong>, starting from A-B and ending with E-F.<\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n
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        1. Draw in element lines<\/strong> connecting 4 triangles as shown.<\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n
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          1. At each point, we want to sub-label with the amount of drop at that point. So both A and B are 0%, C and D are 50% of the drop and E and F are the 100% of the drop. Label these points as the actual number (inches) of drop at each point.<\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n
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            1. Create a True Length Diagram (TLD<\/strong>) with a horizontal leg of arbitrary length and the vertical equal to the 50% drop measurement. The true length<\/strong> of lines will come from the hypotenuse of the triangle created between the half (2\") drop and the line length put on the horizontal leg of the TLD<\/strong><\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n
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              1. Start the pattern with baseline A-B, which is a true length in the elevation view<\/strong>.<\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n
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                1. Pick up line A-C and put it on the horizontal leg of the TLD<\/strong>. Pick up the TL and swing it from point A.<\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n
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                  1. Place line B-C into the TLD<\/strong>. Pick up the TL and swing it from point B. This has completed point C.<\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n
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                    1. Take line B-D and put it into the TLD<\/strong>. Pick up the true length and swing it from point B.<\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n
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                      1. Take line C-D from the elevation view<\/strong>, (it is a true length) and swing it from point C. Notice our labeling, when we go from the same sub-labeling number, it is a true length, when we go from 0%-50% or 50% to 100% we must put that line into the TLD. Having the same number tells us that line is flat and different numbers tell us that line is sloping.<\/strong><\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n
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                        1. Continue to develop triangles, following the labeling.<\/li>\r\n<\/ol>\r\n\"\"\r\n\r\n \r\n
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                          1. Once all 4 triangles have been developed, we need to now create arcs for the heel and throat. We do this by using a geometric technique from level 1, an arc through 3 points. Refer to that chapter if you need a refresher. https:\/\/opentextbc.ca\/patterndevelopment\/chapter\/draw-an-arc-through-3-points\/<\/a><\/li>\r\n<\/ol>\r\n \r\n
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                            1. Add on any seams or allowances like Pittsburgh and S &D.<\/li>\r\n<\/ol>","rendered":"