Sea-steading Prototype

Physical properties:
--- v2.3 ---
Wall thickness - 4"
Cubic meters of concrete - 23.3
Total concrete - 49.7 metric tons
Cubic meters of living space - 360
Tons concrete / m^3 of living space - 0.138
Height - 67 ft
Width max - 23 ft
Width min - 7 ft
Buoyancy (density) - 0.18 g/cm^3
---v2.4---
Wall thickness - 4"
Cubic meters of concrete - 21.4
Total concrete - 45.6 tons
Cubic meters of living space - 306
Tons concrete / m^3 of living space - 0.15
Height - 39 ft