Here I have made a building with 5 ft cente of trusses. The trusses and colum are 2x2x1/4" SQ Tube. 20 ft sidewalls mean you can park large equipment including combines iide. The Gutte, Walls, and roof are simplificatio for viewing and don't represent real metal at all. I am using this for school and to layout how I would position tools and machines, etc. if I can eventually afford to have a large machine shop.