Create grading

Total video time: 8:56

Exercise files: fl-grdg-creat-grdg-data-begin-c3d18.zip

Begin with Grading example.dwg

fl-grdg-creat-grdg-01.mp4 3:15

  1. Home tab > Create Design panel > Grading > Grading Creation Tools
    1. Create Group button
      1. Name: Ditch East
      2. Automatic surface creation: checked
      3. Use the Group Name: checked
      4. Surface style: _No Display
      5. OK
    2. OK
    3. Surface button: The surface is currently set to Exist. The surface button will allow you to switch surfaces if need be.
    4. Layers button: This button will allow you to change default layers.
    5. Grading Criteria set button: WisDOT only has the Basic set with the standard grading options and allows for changing the values of the grading criteria.
    6. Create Grading
      1. Select the feature: Click the blue feature line. The feature line is not in the correct site.
  2. Select feature line > right-click > Move to Site...
    1. Destination Site: Field Survey
    2. OK
  3. Grading toolbar > Create Grading
    1. Select the feature: Click the blue feature line
    2. Continue Grading without the weeding
    3. CREATEGRADING Select the grading side: Click to the left of the blue feature line
    4. CREATEGRADING Apply to entire length? [Yes No]: Enter to accept the default Yes
    5. CREATEGRADING Grade to Relative Elevation: -.5 Enter
    6. CREATEGRADING Format [Grade Slope]: G Enter

    7. CREATEGRADING Grade: 2 Enter for 2% slope

fl-grdg-creat-grdg-02.mp4 2:57

  1. Grading toolbar > Grading criteria dropdownGrade to Distance
    1. CREATEGRADING Select the feature: Click blue feature line
    2. CREATEGRADING Select the grading side: Click to the right of the blue feature line
    3. CREATEGRADING Apply to entire length? [Yes No]: Enter to accept the default Yes
    4. CREATEGRADING Specify distance: 15 Enter

    5. CREATEGRADING Slope: -2Enter

      The gratings create feature lines at the extent of the grading. These feature lines cannot be edited with the regular feature line edit commands. They can be used as the start for a new grading.

  2. Grading toolbar > Grading criteria dropdownGrade to Surface
    1. CREATEGRADING Select the feature: Click left yellow-dashed line
    2. CREATEGRADING Apply to entire length? [Yes No]: Enter to accept the default Yes
    3. CREATEGRADING Cut Format [Grade Slope]: Enter to accept the default Slope
    4. CREATEGRADING Cut Slope: 4 Enter
    5. CREATEGRADING Fill Format [Grade Slope]: Enter to accept the default Slope

    6. CREATEGRADING Fill Slope: 3 Enter

  3. Grading toolbar > Grading criteria dropdownGrade to Distance

    1. CREATEGRADING Select the feature: Click right yellow-dashed line
    2. CREATEGRADING Apply to entire length? [Yes No]: N Enter to change to the No option
    3. CREATEGRADING Select the start point: 0 Enter to start the beginning of the feature line
    4. Station <0+00.0'>: Enter to accept the station
    5. CREATEGRADING Specify point or [Length]: Click point about 50FT along feature line
    6. Station <0+49.90'>: Enter to accept the station
    7. CREATEGRADING Specify distance: 7 Enter

    8. CREATEGRADING Slope: -2 Enter

    9. CREATEGRADING Select the feature: Click right full-length, yellow-dashed line
    10. CREATEGRADING Select the start point: Click in the middle of the feature line
    11. Station <1+00.24'>: Enter
    12. CREATEGRADING Specify point or [Length]: Click just shy of the end of the feature line
    13. Station <1+60.08'>: Enter
    14. CREATEGRADING Specify distance: 10 Enter
    15. CREATEGRADING Format [Grade Slope]: Enter to accept the default of Slope

    16. CREATEGRADING Slope: -3 Enter

      The gradings need a transition between them.

  4. Grading toolbar > Grading criteria dropdownCreate Transition
  5. CREATEGRADINGTRANSITION Select the feature: Select the feature line from which the 2 different ratings start.

  6. CREATEGRADINGTRANSITION Select a location between two gradings or [Points]: Click somewhere between the 2 gradings to transition.

  7. Esc to exit the command. Close the Grading toolbar.

fl-grdg-creat-grdg-03.mp4 2:43

Infills are area gradings that need to be created within a closed feature line.

  1. Select magenta feature line
  2. Right-click > Move to Site...
    1. Destination Site: Field Survey
    2. OK

  3. Home tab > Create design panel > Feature Line dropdown > Create Feature Line

    1. Site: Field Survey
    2. Leave all other defaults
    3. OK
  4. DRAWFEATURELINE Specify a start point: Shift+right-click > Endpoint > Snap to south end of magenta feature line
  5. DRAWFEATURELINE Specify elevation or [Surface]: Enter to accept elevation
  6. DRAWFEATURELINE Specify the next point or [Arc]: Shift+right-click > Endpoint > Snap to south end of closest dashed-yellow feature line

  7. DRAWFEATURELINE Specify elevation or [Surface]: Enter to accept elevation

  8. Enter to stop the command

  9. Home tab > Create design panel > Feature Line dropdown > Create Feature Line
    1. Leave all defaults
    2. OK

  10. DRAWFEATURELINE Specify a start point: Click in the area shown below

  11. DRAWFEATURELINE Specify elevation or [Surface]: 1609 Enter

  12. DRAWFEATURELINE Specify the next point: Click in the area shown below

  13. DRAWFEATURELINE Specify elevation or [Surface]: 1609 Enter

  14. Enter to stop the command

    This creates a closed shape with 4 feature lines. The last one created overlaps, but Civil 3D can resolve this.

  15. Home tab > Create Design panel > Grading > Create Grading Infill
    1. CREATEGRADINGINFILL Select an area to infill: Click inside the area outlined by the 4 feature lines. As you hover over this area, the feature lines will highlight.
    2. Esc to exit the command
  16. Toolspace > Prospector > Surfaces > Select Ditch East > Right-click > Properties...
    1. Information tab > Surface style: P Countours 2' Major: 0.5' Minor

    2. OK

Exercise files: fl-grdg-creat-grdg-data-end-c3d18.zip