I try to explain again.
I imported a DWG drawing to trace external walls. I reproduced the shape of the room using the "rectangle" and I got the 3D room.
As I understand it's not good. I have to draw with thin walls.
I wanted to know if there is a control "thin walls" or if I should draw only the inner profile of the room ...

I hope that is clearer, I attach the image of the plant dwg. (I have to redraw the screened area)

Hi,
I'm an italian student of civil engineering.
I'm starting to use the software for energy analysis, and I use IES VE.
I have to import a model from Revit to IES, but this is not possible for plug-in problems.
So I decided to use Sketch Up for an intermediate step, but I never used until now.
I have some questions:

1. Does anyone know if I import from Revit direttamanta in Sketch Up? The imported model retains the characteristics (stratigraphy - size ....)?
2. I tried to draw a room by importing a .DWG, but when I use the IES plug-in, it does not identify the internal volume of the room as a room but it identifies the polygons I created for the external walls .. how can I do? Searching the internet talking about "thin walls" but do not know how to draw them .. just draw two-dimensional rectangles or is there a specific command?

Thanks in advance to all who help me, and sorry if my English is not perfect.

hello
Anna