MonolithicDome.com presents a building system where a “Monolithic Dome” is a one-piece, thin-shell concrete structure that is insulated and reinforced. The shell’s curved shape and continuous concrete make it resistant to extreme weather and fire, while the insulated envelope helps cut energy use.
The construction follows five simple steps. Builders pour a circular reinforced foundation called a ring beam, inflate a fabric “airform” to set the shape, spray polyurethane foam inside, tie steel rebar to the foam, then spray shotcrete concrete over the steel. Once the concrete sets, the fans stop and the finished shell remains, with the airform acting as the roof membrane. Terms: airform is a tough PVC-coated fabric that is inflated to create the dome shape, shotcrete is concrete sprayed under pressure.
Because the shell is continuous and curved, loads move smoothly through the structure. The Institute documents domes that have stayed intact during tornadoes, hurricanes and earthquakes. Communities also use the same shell method for safe rooms that follow FEMA’s guidance for near-absolute wind protection.
Energy performance comes from thick, closed-cell foam insulation, airtightness, and interior concrete that acts as thermal mass, which helps keep indoor temperature steady. Airtight buildings need planned ventilation. The Institute recommends energy-recovery ventilation and careful humidity control to keep indoor air healthy.
Monolithic domes serve many uses, including homes, schools, churches, sports halls, storage and community safe rooms. The site offers how-to guides, technical notes and case stories that show the range of sizes and designs now in use.
Wikipedia, “Monolithic dome” – 2024
Neutral overview of monolithic domes, current construction method using airforms, foam, rebar and shotcrete, plus durability and energy rationale.
ASME, “Thermal Performance of a Monolithic Thin-Shell Concrete Dome Residence” – 2007
Conference paper discussing energy behavior of a thin-shell concrete dome home, highlighting thermal mass and envelope effects on indoor temperature stability.
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