The thick elliptical shell (1) provides much more spatial strength than equivalent in containment rectangular ones consuming the same amount of building material. Having no openings for doors or windows in the upper part the shell becomes capable to float on water. Only the upper part has enforced openings for door and/or windows.
The internal layer (2) of insulation covers the whole shell from inside. It is made during the process of molding the shell and hence excludes the possibility of gaps' generation - sources of condensate.
The floor (3), of the top level is also formed during the radial molding process including it's insulation and has an area of 150 м². This floor gives the shell additional strength in the horizontal direction.
Same applies to the floor of the bottom level (4), has an area of 50 м² under which there is the container space (5) used for storing supplies of water, gas and products.
The central insulated steel shaft (6) with diameter of 2 meters gives the shell additional stength in the vertical direction and provides for the people inside an additional shelter during critical disasters (like bombing or stonefall). Having escape hatches at the top of the shaft and in the bottom of it a man can always leave the house if ever required.
The internal walls (7) forming the rooms do not have to hold any weight of the structure and hence can be made from any light material and laid out in any way. The floor of the top level hasopenings covered with glass (8), exactly under the windows of the top level to provide daylight to the bottom level.
