Twin track uprights installation progress
It was a productive day on the layout. In the morning, we finally figured out what the minimum height should be for the middle level, which was a needed parameter to start installing uprights. Then I proceeded to cut couple of 70″ twin track standards I bought the day before into 3 equal parts, about 23-5/16″ long. I had to drill an additional hole in every two pieces, so they all have 3 holes for screws.