Why Our Ancestors Built Round Houses – and Why it Still Makes Sense to Build Round Structures Today
The roof structure incorporates a unique architectural design that has its origins in the mountain steppes of Central Asia. Roof trusses meet in a center ring, producing inward and outward pressure which holds the roof in a state of compression. In modern round buildings using the ancient Yurt design, 1-3 airplane grade steel cables circle the outer perimeter where the trusses meet the wall and hold the natural outward thrust. Because of this combination of a central compression ring at the top of the roof and the encircling cables where the roof meets the walls, long roof spans are possible without any internal support system (like beams or posts). The interconnected tension in the building goes all the way to the ground and uses gravity and compression to hold it together with incredible strength.
The natural thermal dynamics of open-at-the-top architecture round space uses no external energy to circulate temperature. It works like this; heated air naturally rises till it reaches the insulated ceiling, it moves up the domed ceiling till it reaches the center skylight, which is cooler, the air reacts by dropping to the floor where it moves across to the walls and rises again till it meets the skylight and drops again. This action constantly circulates the air and temperatures in the home.
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