In my site plan, I would like to show contour lines for the existing site and proposed works. I have set the existing site to demolition phase and it comes up dashed. This is all good, except for where proposed levels are higher than existing (or vice versa), then I don't see all the lines. I've attached the site plan (minus building for clarity).
What I would like to do is to show the site in wireframe and building in hidden line.... suggestions?