Convert Polyline to Wall

[KitchM]

Can the user change a polyline into a wall?

[Mike53]

I do not believe, so but you could draw your wall over the polyline

[KitchM]

Okay. Thanks. I was afraid of that. I'm trying to build a greenhouse that is buried 4 feet into the ground. There are no walls in the ground so I thought the lines would be good enough. The walls above ground are outside that area. I wanted to see a multilevel design, but I couldn't see the below ground part in the 3D view anyway. Maybe it only shows up if the lines are actual walls.

(I'm wondering if I should do everything in one view instead.)