SO like this - sorry the horizontals are 2 dimensional, one thing I never bothered to figure out was how to make my own 3D objects in 3rd PlanIt. It's not terribly obvious how to go about it, compared to other CAD programs I've used. Terrain is pretty easy - making my own custom 'wood' is another thing altogether.
Vertical 2x4 (I would use a 2x3 - sorry, I spent too much time trying to make the brackets look like 3/4" thick wood I just used the 2x4 as given instead of setting up a 2x3), with little chunks of 2x4 to back up the attachment point of the brackets cut from 3/4" plywood. 3" tall at the aisle end, with a taper at the attachment end to 5" tall to give more screw area. Block glued and screwed to vertical, bracket glued and screwed into the vertical and the block.
I have a scrap piece of 2x4 AND a scrap block left over from making my workbench, and still a few pieces of plywood, though it's cut straight, not with the angle on it. I will try to mock this up this weekend, if I can find my wood glue. And drill bits - having everything stacked in the garage is not making experimentation easy, most of my stuff is buried.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
I would probably put a horizontal on both sides of the 2x3 with another 2x3 block in the front that you could use an attachment point for the fascia.
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One thing you can do if you do use a shelving bracket build out a board around it. In this case I used 1x4's. No Cutting the backdrop and still have strength of a bracket. The only down fall is that you lose about 1.5" of depth. you only lose 3/4" if you put bracket straight into wall. I used a 1x4 behind it because I wanted limit the number of holes I put in the wall and the 1x4 also distributes the weight better against the sheetrock in my trainroom. I did shelving brackets directly against the sheet rock on my last layout and it deformed the sheetrock in the 3 years I had the layout. I had to patch all the walls and retexture where the brackets had been because of the impressions they left in drywall.
Here is a section view
and last showing it with your choice of backdrop material
Colorado Front Range Railroad: http://www.coloradofrontrangerr.com/