Here's the layout design I promised
Well to answer a few questions:
QUOTE Neat, very neat indeed. Is all that space we can see for your layout or just a convenient place where you can lay the modules temporarily?
Good to see you posting again mate, I've missed your contribution, you surely haven't completed all your cardboard structures ?.
I actually have 27ft x 17ft but I need another work bench and a place to store my Triton Work centre so I'm not going to fill all the space. I actually was going to build two layouts, but I've abandoned that ideal for now and we'll just see how it goes with On30. One of the reason why I went modular is we are quite mobile, and we may not be permanent in the UK. At least this way I can move my layout or parts of it to a new location.
This was also the attraction of going to a larger scale, is it's less stock to move.
There are no modular standards for On30 so you just get on and do your own thing.
Re the other point on holes for wires and things, I'll drill them once I've finished the basic carpentry, I'll just make a simple drilling jig to make everything interchangeable.
The timber is quite light being only 18mm # by nearly 4" the legs are going to be out of light gauge stock using a modified L girder. I have a basic 140 ft of track in the basic layout sketch, but this should be more than enough to stretch the legs of my 0 gauge stock.
For those just starting with Xtrckcad it took me less than 10 minutes to draft out my track plan, it's well worth the effort getting to know this program.