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Earth Sheltered Technology (Minnesota, USA)

Our homes are constructed of on-site-poured reinforced concrete utilizing our exotic aluminum forming system with a reusable fiber-glass dome form which provides you with a cathedral ceiling. The dome design gives the structure nearly 2O times as much strength as a flat roofed structure. We have never experienced a structural failure due to the fact that we use approximately 2 1/2 tons of grade 60 reinforcing rod (rebar) in each module. Our homes are sealed by 5 different structural engineers. Each module is either 3O'x3O' (28'x28' inside dimensions) or 26'x 26' (24'x 24' inside dimensions). Each 28' module consists of 900 square feet for the first one, and 870’ for each additional one used due to a common wall between modules. Each 24' module, consists of 675 square feet for the first one, and 650 square feet for each additional one used due to a common wall between modules. The apex of the dome on a 28' module is 13'-6" and the apex on a 24' module is 12'. Any wall of a 28' module can have up to a 2O' opening. It can be an arched or rectangular opening, or a single door, double door, or whatever. Any wall of a 24' mod can be opened up to 16'. If required, the entire wall can be opened up by the use of an inverted beam. The cut-away of the dome in our brochure is not a true picture of the cathedral ceiling of our homes, because it looks like a half of a barrel in the brochure. The dome actually curves up the same from all four walls like a square box with 8' sidewalls that has a bubble on top.