What you call fun I call a skill.
Ive never learned CAD, and I have a Landsdcaping program that Ive played with trying to design a shelter. It didnt work too well, and My patience ran
out.
Making food programs is what I would call advanced as well. I hope you using Caloric Intake and Protein, as well as Vitamin intake and allowing for
'Pleasure' foods.
If you were nearby, Heck I'd pay you to dig a trench! I hope you dont mind fixing a broken sewer line as well... lol

I'll even pay you to re-
fill it when I'm done. How about that? Paid to Have "Fun" !
I hate Friggin' Diggin'!
One last suggestion....... Study up on the Structural Rebar requirements for the roof and walls of a shelter. Its my understanding that too Much
steel rebar will make the roof "brittle" and it will fail with overpressures. Too little and it will sag and crack, and fail with
overpressures....
Somewhere there is a magic formula to use for Nuke Shelters, that must be adhered to. More is not necessarialy better in this case.
Best Regards,
Blitzkreigen