Create best fit alignment from survey points

Last updated: 2023-05-02

Total video time: 7:00

Dataset: ali-creat-best-fit-frm-pnt-c3d22.zip

ali-creat-best-fit-frm-pnt-01.mp4 7:00

Alignment creation by best fit from survey points

  1. Open template
    1. Quick Access > New
    2. Select template dialog box
      1. Look in: ...\Begin-dwg
      2. Select file design-start.dwt
      3. Open
  2. Populate existing roadways points for STH25
    1. Toolspace > Survey tab > right-click Survey Databases > select set working folder...
    2. Set Working Folder dialog box
      1. Browse to: C:\WisDOT\Design\c3d\12345678\base\srvy
      2. Select Folder
    3. Toolspace > Survey tab > expand Survey Databases > right-click SD12345678 > select Open for edit
    4. Toolspace > Survey tab > Survey Databases > SD12345678 > expand Survey Queries > right-click Centerlines > select Insert into drawing
  3. Save drawing
    1. Quick Access > Save As
    2. Save Drawing As dialog box
      1. Save in: ...c3d\12345678\dsgn\aliprof
      2. File Name: type AliProf-25-Best-Fit
      3. Save
  4. Create alignment, starting at south end of project
    1. Ribbon > Home tab > Create Design panel > Alignment dropdown > select Alignment Creation Tools
    2. Create Alignment - Layout dialog box
      1. Name: type STH25-Best-Fit
      2. Accept defaults
      3. OK
    3. Alignment Layout Tools toolbar
      1. Line dropdown > select Fixed Line - Best Fit
    4. Tangent by Best Fit dialog box
      1. Radio selected From COGO points
      2. OK
    5. Select point objects or [Numbers Groups]: Using crossing window select, select the points that include the straight line before the curve.

    6. Enter

    7. Regression Data panorama opens
      1. Select green check mark to accept
    8. New line segment is created
  5. Create alignment, middle section of project
    1. Alignment Layout Tools toolbar
      1. Line dropdown > select Fixed Line - Best Fit
    2. Tangent by Best Fit dialog box
      1. Radio selected From COGO points
      2. OK
    3. Select point objects or [Numbers Groups]: Using crossing window select, select the points that are between the two curves.
    4. Enter
    5. Regression Data panorama opens
      1. Select green check mark to accept
    6. New line segment is created
  6. Create curve, between the two line segments
    1. Alignment Layout Tools toolbar
      1. Curve dropdown > select Free Line - Best Fit
    2. Select first entity: Select first alignment, and using selection cycling, select Alignment
    3. Select next entity: Select second alignment (up station)
    4. Curve by Best Fit dialog box
      1. Radio selected From COGO points
      2. OK
    5. Select point objects or [Numbers Groups]: Using crossing window select, select the points that are between the two curves.
    6. Enter
    7. Regression Data panorama opens
      1. Select green check mark to accept
    8. New curve is created

      Tip: If the curve needs adjusting, use the triangle grip at curve's PI to move the curve. Because it is a free curve, tangency is maintained.