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• Dashed Line in Composite Wall

Winner of the TechTip Contest of the month of August, 2002

An excellent example of lateral thinking by Adam Witczak of A R C H i m p u l s S C, Poland

>Anyone know how to create a composite wall that includes a dashed
>line down the center of it (in plan)?
>Can't be done as far as I know.

Create or use an existing fill (something like zebra crossing or chessboard with the desired distance between black and white fields) and use it as a part of your new composite (add thin layer in the middle of wall)
-- Adam Witczak

In ArchiCAD, composites are built of Fills. Therefore, the solution is to create a Fill that'll look like a dashed line in the center of the Composite Wall.

Follow these simple steps:

Suppose you want to draw a 0.3 mm thick dashed line with gaps of 1.5 mm and dashes of 2 mm long at the scale of 1:100.

1. Before getting started, adjust your display options according to the following screenshot:
   

2. Draw a rectangle of Solid fill that's 30 mm thick and 200 mm long. Use whatever color you like, it isn't important.
3. Then copy it to the Clipboard (Cmd+C (Mac) or Ctrl+C (Win))

4. Open the Options/Fill Types... dialog.

5. Click on "New" to create a new Symbol Fill, and name it. (i.e. "Dashes 2/1.5 1:100")

6. The following dialog box will appear:
   

7. Click on the Paste button. The dialog box will look like this:
   

8. The key to achieving the desired zebra crossing fill is to adjust the Spacing values in this dialog box:
   • x1 controls the horizontal alignment of the pattern. Set it to 350 [mm], which is the sum of the dash and the gap (200 mm + 150 mm). This way you will get 1.5 millimeters as spacing on paper print.
   • y1 controls the vertical alignment of the pattern. You can leave it as it is.
   • x2 controls the horizontal shift of pattern rows; there is no need to change it from 0.
   • y2 controls the vertical distance between the pattern rows. This is the actual height of our original motif and does not need to be changed.

   Note that the preview might not show our pattern well at a certain zoom factors.

9. Don't forget to change the Bitmap Pattern so that it looks like the sample of the Vectorial Pattern. This way in Bitmap display mode, it will have the same pattern as in Vectorial display mode.

10. The fill should now look like this:
    

11. Check the "scale with plan" box in order to always have the same sized dashes and gaps at any scale.

12. Now that you've created the necessary fill pattern open the Options/Composite Materials dialog box.

13. Select a Composite Structure, Duplicate it, then rename it to your liking.

14. Insert a new skin into your composite using the Insert button, and select the previously created fill ("Dashes 1.5/2 1:100" in our example).

15. Choose a pen for the outline, the background and the motif of your fill.
16. Adjust the width of your new skin to the width of the "line" you desire. (30mm in our example)

17. Don't forget to choose the "Follow the wall angle with the hatch angle" option next to the Fillchooser popup in the Edit selected skin dialog box!
    

18. Click on Ok and start to draw a wall with the new Composite Structure - enjoy!
    

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