Drawing transparency

Hi, I am currently doing an Architecture project and require to create drawings of a real location. I am currently creating a section drawing on the side of the building following the complete completion of the model. However, I am having trouble representing the fact that the walls are translucent to some degree. I am hoping for any ideas on how this can be achieved within rhino using a section cut or some linework. All ideas, help and suggestions would be greatly appreciated. Below is the real life photo, my digital model and the current but problematic section cut.



did you try to duplicate edges of the translucent walls and hide the solid wall?