Sure thing. If you’re gonna build a bunker that can take a full assault, start with a thick concrete wall, at least 12 inches, poured over a steel rebar cage. Keep the floor and roof at the same thickness so the load is even. Add a blast‑resistant door, like a steel plate with a reinforced frame. Inside, use a double‑layered design with a ventilation system that can be sealed and scrubbed. Don’t forget a supply vault and a water storage chamber. Measure every joint, keep the tolerances tight, and get a licensed engineer to check the calculations. That’s the only way to make sure it holds up.