Tutorial: How to use Propagate Edges
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BimPropagateEdges is one of the five Propagate flavours. It can be used to copy details along edges of planar solids. A common example is a wall cap along the edges of a flat roof. For a more in-depth explanation of the general principles of Propagate, read this article on Propagate.
For more information about this command, visit the Command Reference article BimPropagateEdges.
Procedure: Propagating a wall cap
Consider the following situation of a one-story building with a flat roof.
Let’s create a vertical section plane to cut through our building and take a look at where the wall (1) and the roof slab (2) come together.
We want to create a capping (3) on top of this wall to get the following result:
We can start by creating this locally on top of one wall, either by using direct modelling tools or inserting a block from somewhere else and exploding it. In our section it might look like this:
Now we can use Propagate to copy this detail over to all applicable locations.
Let’s deactivate the section and launch BimPropagateEdges.
You are prompted: Select planar solid to which edge detail is related.
Select the wall on top of which the capping was modelled, and press Enter.
You are prompted: Select detail objects to be included in the edge detail (solids or faces).
Select the objects that make up the capping, and press Enter.
You are prompted: Propagate detail as an extrusion of this 2D Section? [Yes/No/Inflate first] <Yes>:
Inflating the detail is not necessary in this case. For more information on inflating, read this article on Propagate. Choosing ‘No’ will exit the command. Press Enter to accept.
You are prompted: Propagate to edges with similar orientation only? [Yes/No] <Yes>:
Choosing Yes will only apply this detail to edges with a similar orientation, in this case wall edges that point upwards. Press Enter to accept.
BimPropagateEdges now scans the entire drawing for similar locations. When this is done, the view is zoomed out to show all possible locations. Every suggestion is highlighted and a widget is displayed:
You are prompted: Choose next action [Apply all/Cancel] <Apply all>:
A green check mark means that this suggestion will be applied when pressing Enter. A question mark means that it will not be applied due to one of several possible reasons. Hovering over the widget will reveal more information. In this case it says “Location of original detail. Click to replace original detail by adapted extrusion”. Because we modelled the wall cap only locally, we should replace the original detail by an adapted extrusion so that it covers the entire length of the wall. Clicking the widget will turn it into a green check mark.
Press Enter to complete the command.
Now all four walls should have this wall cap. Also the corners should be solved automatically.