This is the start of my new project. It is going to be a playhouse for my two girls. These are the floor joists. I made the cutouts so that the forks of our Skytrak will be able to slide in and I will be able to move this playhouse around. It also allows me to build it next to the shop where all the tools are and move it when finished. It is 12 feet long and 8 feet wide.