After a slight mishap when trying to change the mounting height of my (very unfinished) small N scale layout, I decided to rebuild as a triangular 8' corner layout with 24" curves on the double mainline. The old 'L' shaped baseplate/shelf had only room for 13" radius turnaround loops. Here is the first draft of the layout; the bottom of the baseplate is 54" above the floor; trackwork will be code 55 micro engineering flex track and #6 ME turnouts. In the past I have mounted track on a sandwich of camper seal tape and that black slightly sticky roadbed material, but I'm open to suggestions. How is the Woodland Scenics foam track bed? Goals: I want to be able to run eight car passenger trains, as much as that is possible in a small 2nd bedroom/office type space. This means reasonably large curves, and reasonably long sidings (eight 85' cars in 1:160 scale = four feet). A double mainline might make sense, to allow to run two passenger trains at the same time. I want to integrate a turntable and engine house I already have, also as a display area for locomotives and MOW equipment (e.g. a rotary snowplow/BR44 set). It would be nice to leave space for future industries (e.g. I have a steel mill kit that I need to assemble). I'm not sure how much switching etc. I actually want to do, but I don't want to design myself into a corner where I can't add features in the future. So the mainline layout should leave some room for extension. I haven't decided yet whether I want to go vertical at all; for the mainline the emphasis should be on reliable running of long passenger trains, so that probably means staying flat. For now the plan is to get a running layout with some basic landscaping, and then maybe refine and add more landscaping, industry, extensions etc. later on. In the design above, I'm happy with the mainline length (about two times 30 feet) and the radii (mostly 24"), and with the amount of free space left. I'm not 100% happy with the stub end staging/storage tracks at the bottom left - the tracks could be longer, which might mean reducing the mainline radius a bit at the bottom curve -, and with the placement of and access to the turntable and engine house. I'm also just getting started with XtrkCAD, so I'm glad I was able to place turnouts at all. Some of the connections look a bit rough to me. The long diagonal has hinges at the bottom end (at the 2 foot line), which makes it easier to get to my computer desk under the northern/top shelf of the layout. I was thinking that at some point I might want to add a lift bridge at the top right end - Chicago has a prototype just south of the Amtrak facility- , but the tracks for turntable access collide with that idea right now. I would appreciate feedback on the general idea, and on the layout draft. I have built the benchwork/baseplate/shelf including the diagonal.