Help wanted with FEM solvers on FreeBSD

I’m looking for some help with FEM solvers on FreeBSD and possibly related questions for @phryk aka in email.

phryk’s goal is a foldable tinyhouse that offers around 50m² folded out, is small enough folded in to be legal to transport with a truck on european streets and easy to produce.

Bottom compartment is for things like batteries and tanks and keeps a low center of gravity.

Let’s see of this image is re-usable:

You can also respond here and I’ll pass it on to phryk.