Reply to "Layout expansion help requested"

Done with Atlas track.  20+ Years ago, Atlas had a track software.  Each block, faint lines, is 1 ft square.  Done in a small bedroom, 13 1/2 foot X 10 foot. Note: The closet, bottom of picture.  Room door is lower right.  O54 outer loop, (required 5 ft table width), O45 inner loop.  There were two major additions to this original layout.  One bottom left.  The other, via an Atlas double track bridge, to a remote, (Coal tipple section), of the layout.