Hello,
We live in West Plains, MO and are building a EarthShip. When we excavated the area to build our home we found the dirt to be clay and rock. This is perfect building material for a EarthShip. You use the material of the area of where you are building. We are on our 3rd row of tires. When the compacted tires sit for a day they become hard as a rock. Nothing wrong with using the natural clay from the earth for making a EarthShip of any kind. We like to use lots of rocks as well. Helps to hold in the clay, sand, or any kind of soil that you would have on site. You have to remember you are compacting the tire. Putting in 3 to 4 wheel barrow loads of dirt into one tire. Nothing wrong with using the natural clay from the ground. When using it though make sure it is dry. Otherwise the clay sticks to you sledge hammer. Have fun. We do have a website and facebook page that you can go to for more information. www.severinearthship.weebly.com or severin earthship in the ozarks for Facebook.
