Rammed earth

Hi everyone

I am planning a rammed earth house. Because my Block is on a hill, I will cut in it, build a bassement with retaining walls and a suspended concrete slab on top. After that, I would like to build the 2 stoty in Rammed earth as well. I need to know more about wall thikness for retaining walls, posebillities to reinforce the rammed earth and general experience with earth walls and concrete slab on top.