The 3-7-12 Self-Sufficient Building System: A 120‑Year, Lightweight, Multi‑Hazard Resilient High‑Rise for Any Climate & Any Continent

Abstract

The 3-7-12 Self-Sufficient Building System is a fully prefabricated, lightweight, high‑rise construction method (10 to 100 storeys) that operates independently of external electricity, water, gas, and sewage grids. The system is designed for global applicability: from tropical humid zones to arid deserts, from seismic belts to cyclone‑prone coasts, and from developed megacities to remote off‑grid communities. The building integrates three structural layers (LSF frame, precast concrete core, sandwich panels), seven self‑contained MEP subsystems (rainwater harvesting, biogas, smart HVAC, smoke extraction, solar‑wind power, dual‑layer fire suppression, and structural health monitoring), and twelve performance indicators (cost, speed, durability, seismic resilience, typhoon resistance, tsunami protection, acoustic insulation, thermal efficiency, SHM, prefabrication ratio, scalability, upgradability). All components are 100% factory‑made and assembled on‑site with bolted connections, reducing construction time by 80‑90% compared to conventional reinforced concrete. The design service life is 120 years under normal maintenance. Resilience is explicitly addressed for earthquake, typhoon, tsunami, landslide, flood, and lightning. The system is open‑source, patent‑free, and ready for replication anywhere. A 100‑storey building (100,000 m²) can be completed in 9‑12 months at an estimated cost of 800‑1100 USD/m², offering a tangible solution to the global housing, energy, and water crises.