The two 16×16 roof panels could be done with tilt-wall concrete over a mesh rebar ( think hog panels wired together and jacked into place. Would make a sturdy and fairly bullet proof place with excellent fire resistance.
The two 16×16 roof panels could be done with tilt-wall concrete over a mesh rebar ( think hog panels wired together and jacked into place. Would make a sturdy and fairly bullet proof place with excellent fire resistance.