The last time we left the model, the walls had been constructed, the windows had been given some properties so the impending sunlight would react to it in a physically accurate manner, but the painters and plasterers have not yet been called in. Well, now it's time to break out the Dulux colour charts (or the munsell colour charts, if you're more used to those)!
However, it turns out that my previous creation was very complex to map (more on that below), and it left too many gaps between the areas where the walls meet (for all that AutoCAD and 3DS Max share a lot of features, they are still two very different creatures) so it had to be completely rebuilt! This involved creating a box, splitting it into multiple segments and then model each individual window pane based on this box. Additionally it also turns out that the boolean functions (adding and subtracting surfaces and solids from each other to create new shapes) doesn't work very well in 3DS, in contrast to AutoCAD. I wasted 2 days trying to think of a workaround to this!! on top of the the box was too space intensive so I ignored the thickness of the walls and worked on a plane instead. This meant that I had to create a single shape (i.e. the planes) and effectively have ready-made holes in the shape.
This was repetitive, tedious and dull but it can at least be copied around the building, because the glass is a reasonably uniform shape. The other advantage is that I could import images of the building in question to create the glass panes and iron bars accurately, along with the rest of the model.