The workbench I am using for dominoe assembly is only 6 feet long. Nevertheless, it works very nicely with the corner clamps to assemble the dominoes. Titebond III glue and three 2 inch screws on each side of each cross piece translates into a very stable, sturdy assemblage. I was just test fitting pieces in this photo. Prior to assembly, 3/4 inch holes for the LocoNet and buss line were drilled.