I have a very strong car port right outside my detached garage. Its the same same size of the garage. I want to put walls on the sides. The place where the walls would set on the floor does not have concrect. I really want to stay away from pouring concrect. The walls will be made from 2X4 siding on the out side to look just like the garage. What would be the best way to attach the walls to the floor? that Like I said it does not have concrect. Its just dirt and grass.