Abstract: The present invention relates to prefabricated rooms and the construction thereof. More particularly, the present invention, relates to prefabricated sealed rooms that serve as a room for daily use and protects from weapons of mass destructions such as nuclear fallout, biological or chemical weapons, and natural disasters.

Abstract: The present invention relates to a prefabricated sealed room, which may comprise a plurality of prefabricated sealed rooms to form prefabricated sealed room assembly, stacked one above another or as a stand alone. The prefabricated sealed room is made of reinforced concrete and synchronized corners. The usage of reinforced concrete protects the prefabricated sealed room from shocks caused by blasts or natural calamities. The prefabricated sealed room can also be integrated into the production process of a building. Each prefabricated sealed room can be substantially sealed from the external environment.