Structure Type & Dimensions
Geodesic dome with reinforced basement and hardened tunnel connection.
| Dome Diameter | 36–40 ft |
| Peak Height | 20–24 ft |
| Basement Height | 10–11 ft |
| Frame | Steel or Laminated Timber |
| Exterior Cladding | Fire-Resistant |
| Foundation | Reinforced Concrete |
| Insulation | Rockwool Mineral Wool |
| Interior Walls | Double-Stud Acoustic |
| Basement Walls | Waterproofed Concrete |
| Tunnel A | Fortress Bunker — hardened underground link |
| Tunnel C | Bath House Basement — direct underground link |
Envelope Protection
- Continuous air barrier throughout structure
- Moisture control layers; drainage plane
- Basement drainage and sump pump
- Sealed penetrations at all service entries