{"id":430,"date":"2021-07-24T00:55:25","date_gmt":"2021-07-24T04:55:25","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/pressbookbccampussmlt1\/chapter\/on-centre-round-to-taper-print\/"},"modified":"2023-03-17T13:20:21","modified_gmt":"2023-03-17T17:20:21","slug":"on-centre-round-to-taper-print","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/pressbookbccampussmlt1\/chapter\/on-centre-round-to-taper-print\/","title":{"raw":"On-Centre Round to Taper","rendered":"On-Centre Round to Taper"},"content":{"raw":"
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  1. Draw a full [pb_glossary id=\"532\"]plan view[\/pb_glossary]<\/strong> complete with all [pb_glossary id=\"528\"]element lines[\/pb_glossary] <\/strong>and labeling. Label one half of the plan view, travel from large end to small end, zig-zagging back and forth with the numbering 1-14. Notice the lines of symmetry in the plan view. Every round to round will be on centre one way, but it is always worth drawing the whole thing.\"\"<\/strong><\/li>\r\n \t
  2. Create a\u00a0[pb_glossary id=\"540\"]TLD[\/pb_glossary]<\/strong>\u00a0and label all the\u00a0element lines.\u00a0Remember, any element line which travels from one end of the fitting to the other, will need to be put into a true length diagram.\r\n\"\"<\/strong><\/li>\r\n \t
  3. Draw a vertical line equal to the [pb_glossary id=\"539\"]true length[\/pb_glossary]<\/strong> of line 1-2. Square to rounds always start with a horizontal line and round tapers always start with a vertical line. <\/strong>We are now ready to triangulate.\r\n\"\"<\/strong><\/li>\r\n \t
  4. From the\u00a0TLD, pick up the true length of line 2-3 and swing it from point 2, back towards point 1. Remember to work both sides at the same time.\"\"<\/strong><\/li>\r\n \t
  5. Next, pick up\u00a0step-off\u00a01-3 and swing it from point 1, to complete point 3.\u00a0When we look at our plan view, we have labeled it in a way that odd numbers are at one end and even on the other. So, when we go from one end to the other (odd to even), we need to find the true length, but when we go from even to even or odd to odd we don\u2019t have any elevation change involved. We are just going horizontally along the end, which means it is a true length in the plan view.\"\"<\/strong><\/li>\r\n \t
  6. Pick up line 3-4 from the\u00a0TLD and swing it from point 3 back towards point 2.\"\"<\/code><\/li>\r\n \t
  7. Pick up the\u00a0step-off and swing it from point 2, to complete point 4.\"\"<\/code><\/li>\r\n \t
  8. Follow this same procedures, swing a true length of an\u00a0element line\u00a0and a\u00a0step-off to create the next point until you reach point 14.\"\"<\/li>\r\n \t
  9. Draw in the all the\u00a0element lines\u00a0and outside edges, use a flexible curve for the round ends.\u00a0Because this is a fitting that could be done in radial line, although maybe not practical, the pattern will follow the same shape, having a common radius point and parallel arcs.\"\"<\/strong><\/li>\r\n<\/ol>\r\nhttps:\/\/www.youtube.com\/watch?v=3kSzB35O3VI&list=PL0YcC46LnT8di2DsnBZrMgeEtso_LWIHL&index=13","rendered":"
      \n
    1. Draw a full plan view<\/a><\/strong> complete with all element lines<\/a> <\/strong>and labeling. Label one half of the plan view, travel from large end to small end, zig-zagging back and forth with the numbering 1-14. Notice the lines of symmetry in the plan view. Every round to round will be on centre one way, but it is always worth drawing the whole thing.\"\"<\/strong><\/li>\n
    2. Create a\u00a0TLD<\/a><\/strong>\u00a0and label all the\u00a0element lines.\u00a0Remember, any element line which travels from one end of the fitting to the other, will need to be put into a true length diagram.
      \n\"\"<\/strong><\/li>\n
    3. Draw a vertical line equal to the true length<\/a><\/strong> of line 1-2. Square to rounds always start with a horizontal line and round tapers always start with a vertical line. <\/strong>We are now ready to triangulate.
      \n\"\"<\/strong><\/li>\n
    4. From the\u00a0TLD, pick up the true length of line 2-3 and swing it from point 2, back towards point 1. Remember to work both sides at the same time.\"\"<\/strong><\/li>\n
    5. Next, pick up\u00a0step-off\u00a01-3 and swing it from point 1, to complete point 3.\u00a0When we look at our plan view, we have labeled it in a way that odd numbers are at one end and even on the other. So, when we go from one end to the other (odd to even), we need to find the true length, but when we go from even to even or odd to odd we don\u2019t have any elevation change involved. We are just going horizontally along the end, which means it is a true length in the plan view.\"\"<\/strong><\/li>\n
    6. Pick up line 3-4 from the\u00a0TLD and swing it from point 3 back towards point 2.\"\"<\/code><\/li>\n
    7. Pick up the\u00a0step-off and swing it from point 2, to complete point 4.\"\"<\/code><\/li>\n
    8. Follow this same procedures, swing a true length of an\u00a0element line\u00a0and a\u00a0step-off to create the next point until you reach point 14.\"\"<\/li>\n
    9. Draw in the all the\u00a0element lines\u00a0and outside edges, use a flexible curve for the round ends.\u00a0Because this is a fitting that could be done in radial line, although maybe not practical, the pattern will follow the same shape, having a common radius point and parallel arcs.\"\"<\/strong><\/li>\n<\/ol>\n