My glass is not transparent after I upload to vCAD
If your using default glass materials in Revit, SketchUp, or another 3D CAD package, then your transparent properties assigned to the object will automatically transfer into vCAD. However, if you are using a custom material, then the vCAD system does not know to make that material transparent.
Simply name your custom material "glass" or place the word "glass" somewhere in the material name. When uploaded the vCAD system will recognize the property and apply transparency to the object.