Aparently, I’ve conflated Level with Plumb, the walls cannot be parallel and plumb. Due to the curve, the center of gravity for the walls would require them to angle in slightly together or not be plumb.
Aparently, I’ve conflated Level with Plumb, the walls cannot be parallel and plumb. Due to the curve, the center of gravity for the walls would require them to angle in slightly together or not be plumb.
You can. The middle of the room just needs to be slightly recessed into the ground. Honestly, building sites are leveled before construction begins and they deal with a lot more variation than you’d see from the curvature of the earth.