A new base was cut from the 36" x 36" x 0.060" styrene sheet I sell. This was great, as it let me make one continuous base plate for the 54 door battery and the door repair shop (not yet built) and the extension where the spare coke guide and door machine/coke guide engine sit when not in service.
Extension for the spare coke guide and door machine/coke guide engine, and brick foundation sheathing applied. This is the "south" end of the battery.
The door repair shop will extend right to the end of the platform that butts up against the end of the battery proper, and the upper deck of the battery will extend over it. They were able to pull the larry car right over the repair shop, and thus off of the top of the last oven. There are stairs at the end of this portion of the platform that go from round level up to the shop, and then up to the top of the battery as well. The smoke stack will to next to the "siding" for the extra coke guide.
You can see the layout of the battery facility in this image. I'm working on the section that is in the lower left corner.
You can see in this image the door machine and a coke guide car. You can also see the door repair shop at the right. There's a brick division between the end of the battery ovens and the repair shop. You might also notice that the door machine isn't sitting on concrete, but steel. There was storage under this part of the track. As there are no doors or windows on this side of that section, I decided not to put any in on the other side. That side of the battery will face the back drop on the layout, and once placed, never be seen from any vantage point. I did however, brick the foundation on that side, as we have a camera train on the layout, and if we run a train behind the battery, you'll be able to see the entire side of that battery. So a lack of brick on the foundation would be an obvious indiscretion on the model in a video.
As an aside, the below image is a .TIF file. When you download images from HAER, be sure to download the .TIF option. You can zoom in extremely close on this type of image, and it remains clear. Often revealing detail you'd not see in a .JPG.