When you place a foundation they cannot stack so when you place them on uneven terrain you cannot make a flat surface. Is that how it still is or did they finally fix that? Since the S+ Structures was added to the vanilla game..it should be possible if you use the S+ building parts.
How do you attach a floor to a foundation in Fallout 76?
First, place a foundation where you want to start building. Then, add a staircase to the foundation. You can then attach a half-width upper floor to the top of the staircase, like so. On the other side of the half-width upper floor, add a staircase going down.
Where is the foundation in Fallout 76?
Foundation is a location in the Savage Divide region of Appalachia, and serves as the Settler headquarters. It was built in 2103 on the site of the former Spruce Knob workshop.