Yes i export through dwg, one dwg units is one millimeter and use the same when importing to SU, i guess the project is rather complex.

ah yeah i have read it thanks, but im afraid there is no solution to this, or perhaps i can import it as solid

Hi i have this revit model that consists of a lot of ramps and i would like to work on it in SU. Må problem is when i import the revit model (i have followed the tutorial in here) the ramps are missing faces and looks rather odd, any solution to this, i have done something wrong?