@MELGAR
I hate to impose on you for more information on your Mianne benchwork but the space you used seems similar to what I have to work with, Could I trouble you for your track plans and Mianne dimensions? Email is in my profile and thanks for the help
Picture shows the Mianne table frame on my 10’-by-5’ layout.
The plywood top consists of two pieces of birch plywood – each piece is 5-feet by 5-feet (a 10’-by-5’ piece cut in half for portability if the layout must be dismantled for moving). Table length 120 inches, table width 60 inches. Track is just an oval with Atlas O-54 on the curved ends connected by 5 feet (60-inches) of straight track on each side. No track cutting required. Width of oval is 56-1/4 inches and length of oval is 116-1/4 inches. This leaves just under 2 inches from the edges of the track to the table edges on the curved and straight parts of the oval.
The Mianne legs are 1-3/4 inches square by 42 inches in height. On my layout, the dimensions across the outer faces of the legs are 106-1/2 inches in length and 50 inches in width. From the picture, you can see that I used three legs along the length and two legs across the width. The two beams along the length are each 50-1/2 inches in length and the single beam along the width is 46-1/2 inches. There are two intermediate (46-1/2 inch) cross-beams to support the middle of each piece of the plywood top. I also included a leg in the center of the table and lengthwise and crosswise beams to make the frame more rigid.
On my layout, the top overhangs the frame by 5-inches on each side and by 6-3/4 inches on each end. I did this to reduce the amount of floor space taken up by the frame.
Tim Foley at Mianne Benchwork will assist you and recommend whatever pieces are needed to make your track plan and table size.
MELGAR