My house suits me well because it was designed and modeled by my sister (it’s awesome to have an AutoCAD pro sister). Plenty of space, even a room for my cat. The were some things I missed during the building: the couplings connection and the amount of concrete for fundament. As the result, the building took additional time. Don’t trust the “concrete calculator online”, better to hire a well experienced professional. And also I figured out that I’m not a such a good welder as I thought. Also took some time for me to understand how to use the generator. Later I figured out that couplings might be connected with mechanical pressuring. Usually, companies selling rods can supply you with equipment also. http://hardman-de.com as an example. But I guess all this experience will help me during the backyard tool house building.