All residential buildings inside of the country built after 1978 are mandated by law to contain a nuclear shelter capable of surviving a 12 megaton blast from a distance of 700 meters away.

根据法律规定，瑞士境内1978年以后建造的所有住宅建筑，都必须包含一个核庇护所，确保即使距它七百米之外发生12兆吨级爆炸，核掩体也能安然无恙。