The visible form follows operations, safety, circulation, and growth.
The central spine carries command, utilities, vertical transport, structural transfer, and protected service routes. Inhabited rings distribute civic, residential, medical, agricultural, research, hospitality, and public functions so that no single district must carry the whole city.
Docking arms and industrial sectors remain physically and operationally separated from quiet habitat zones. Expansion interfaces allow new districts to be added without dismantling the station’s core circulation and utility networks.