tandrasz

Thanks - broke the right border at the start of the retaining wall and then made the shorter part almost zero length.

That worked great!

Now, I just need to figure out how to convert the elevation region square into a polygon, so I can get rid of the up bump in the bottom right  corner. 

Thanks Scott! I'm getting much better results with the elevation region, but I still must be doing something wrong. Here is the screenshot of mine (lower) vs Mark's (upper):

Mine has these rugged terrain irregularities, while Mark's is smooth.

The plan:

Terrain_good2.plan

@dshall - sorry Scott - I posted the original plan - without the retaining wall. 

@mark3D - thanks Mark, I will break elevation lines. 

It has, but it looks like a U shaped stripe on the surface - like in my screenshot. Try creating one in that plan.

Hi, 

I'm new to this. I'm using Chief Architect Premier X7. I have imported perimeter and elevation data from a DWG file. It looks correct in the Perspective Full Overview, however when I try to draw a retaining wall all I get is something that looks like a stripe of concrete on the ground (attached) - the terrain does not get broken.  In a new plan with perimeter and elevation lines created manually retaining walls work as expected. 

What am I missing?

Tom

Here is my plan:

Terrain_good2.plan