There is really only one hard political constraint with regards to the layout: it must fit entirely in this single room. This includes all mainline, branchline and staging areas. While future expansion may reach into adjoining rooms, I have decided that setting the political boundary to the confines of this single room is the best way to get started and will discourage me from biting off more than I can chew (as if I haven't done this already!). This also means that there will be no carpentry involved with the room itself other than attaching benchwork to the walls as needed. Most importantly, none of my beautiful drywall will need to be punched through!
PhotosHere is a diagram of the room that will house the CSX Dixie Line layout (click any picture for larger version):
Here is a view looking away from the entrance. The helix will be in the distance at the end of the peninsula that runs down the middle of the long axis of the room:
Here is a view looking back the other way towards the entrance. The peninsula will attach to the middle of the short wall, or just behind where my current test layout is:
Here is my current test layout and a small 2' x 4' layout: